CN113556028B - Ripple voltage control method, ripple voltage control system, electronic device, and storage medium - Google Patents
Ripple voltage control method, ripple voltage control system, electronic device, and storage medium Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
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Abstract
The invention provides a ripple voltage control method, a ripple voltage control system, electronic equipment and a storage medium, wherein the method comprises the following steps: monitoring the integrated circuit; if the undershoot stop of the output voltage of the integrated circuit is monitored, the load line control is started, the undershoot of the output voltage is caused by the sudden increase of the load current of the integrated circuit, the problem that the circuit cannot have optimal performance by starting the ripple voltage in the output voltage controlled by the constant load line is solved, the ripple voltage in the output voltage is controlled by taking the moment when the undershoot stop of the output voltage as a reference, the output voltage is ensured to have smaller overshoot and undershoot, and the performance of the circuit is optimized.
Description
Technical Field
The present invention relates to the field of electronic circuit technologies, and in particular, to a ripple voltage control method, a ripple voltage control system, an electronic device, and a storage medium.
Background
In the field of electronic circuits, an output voltage of the circuit is often accompanied by ac components, which are ripple voltages. The ripple voltage has many disadvantages, for example, the service life of the electronic device connected to the circuit is shortened or the electronic device generates noise, so that the developer needs to control the ripple voltage in the output voltage within an acceptable range when designing the circuit.
In a conventional scheme, a ripple voltage in an output voltage is usually controlled by turning on a load line, which can reduce an operating voltage in a Circuit, reduce power consumption of the Circuit under the condition of no load current change, and avoid burning out an ASIC (Application Specific Integrated Circuit) under a high-voltage condition. However, this scheme, while having the above-described advantages, also causes a drop in the bottom of the output voltage, and thus fails to achieve optimum performance of the circuit.
Disclosure of Invention
The invention provides a ripple voltage control method, a ripple voltage control system, electronic equipment and a storage medium, which are used for solving the defect that the ripple voltage in the output voltage can not enable a circuit to obtain the optimal performance by starting a constant load line in the prior art.
The invention provides a ripple voltage control method, which comprises the following steps:
monitoring the integrated circuit;
and if the output voltage undershoot of the integrated circuit is monitored to stop, starting load line control, wherein the output voltage undershoot is caused by the load current surge of the integrated circuit.
According to a ripple voltage control method provided by the present invention, the monitoring of an integrated circuit includes:
monitoring the load current of a power supply circuit of the integrated circuit;
and if the load current sudden increase is monitored, determining that the output voltage of the integrated circuit undershoots and stops after waiting for a preset time.
According to a ripple voltage control method provided by the present invention, if it is monitored that the load current suddenly increases, it is determined that the output voltage of the integrated circuit undershoots and stops after waiting for a preset time, including:
and if the load current sudden increase is monitored and the amplitude of the load current sudden increase is larger than a preset amplitude threshold value, determining that the output voltage of the integrated circuit undershoots and stops after waiting for a preset time.
According to a ripple voltage control method provided by the present invention, the monitoring of an integrated circuit includes:
monitoring the output voltage of the integrated circuit;
if the sudden drop of the output voltage is monitored, comparing the output voltage at the previous moment with the output voltage at the current moment, and determining that the undershoot of the output voltage of the integrated circuit stops when the output voltage at the current moment is greater than or equal to the output voltage at the previous moment.
According to the ripple voltage control method provided by the present invention, if it is detected that the output voltage of the integrated circuit undershoots and stops, the load line control is started, and then the method further includes:
and if the output voltage of the integrated circuit is recovered to a preset stable value after being monitored to rise back, closing the load line control.
The present invention also provides a ripple voltage control system, comprising: a ripple voltage control device, the ripple voltage control device comprising:
a monitoring circuit configured to monitor the integrated circuit;
a control circuit configured to initiate load line control if a cessation of an output voltage undershoot of the integrated circuit due to a sudden increase in load current of the integrated circuit is monitored.
According to a ripple voltage control system provided by the present invention, the control circuit is further configured to:
and if the output voltage of the integrated circuit is recovered to a preset stable value after being monitored to rise back, closing the load line control.
The ripple voltage control system further comprises a power supply circuit and the integrated circuit;
the power supply circuit is configured to supply power to the integrated circuit and transmit load current monitoring information to the monitoring circuit;
the integrated circuit is configured to transmit output voltage monitoring information to the monitoring circuit.
According to the ripple voltage control system provided by the invention, the monitoring circuit is configured to monitor the output voltage of the integrated circuit to obtain the output voltage monitoring information, or monitor the output voltage of the integrated circuit and the load current of the power supply circuit to obtain the output voltage monitoring information and the load current monitoring information;
the control circuit is configured to acquire the output voltage monitoring information and/or the load current monitoring information, determine whether undershoot of the output voltage of the integrated circuit stops based on the output voltage monitoring information and/or the load current monitoring information, and determine whether the output voltage of the integrated circuit recovers to the preset stable value after rising.
According to the ripple voltage control system provided by the invention, the integrated circuit is in communication connection with the ripple voltage control device;
the integrated circuit is configured to read the output voltage monitoring information and/or the load current monitoring information from the ripple voltage control device to determine whether the output voltage undershoot stops and whether the output voltage recovers to the preset stable value after rising back, and send a control instruction to the control circuit to enable the control circuit to start the load line control based on the control instruction and close the load line control.
The present invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the ripple voltage control method as described in any of the above when executing the program.
The invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the ripple voltage control method as described in any one of the above.
According to the ripple voltage control method, the system, the electronic device and the storage medium, whether the output voltage undershoot of the integrated circuit stops or not is judged according to the monitoring data obtained by monitoring the integrated circuit, if the output voltage undershoot of the integrated circuit stops, the load line control is started, the problem that the ripple voltage in the output voltage cannot enable the circuit to have the optimal performance by starting the constant load line control is solved, the ripple voltage in the output voltage is controlled by taking the moment when the output voltage undershoot stops as a reference, the output voltage is guaranteed to have smaller overshoot and undershoot, and the performance of the circuit is optimized.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a ripple voltage control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a load line provided by an embodiment of the present invention;
FIG. 3 is a waveform diagram of a load current and an output voltage provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of an ideal waveform of an output voltage provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a ripple voltage control system provided by the present invention;
fig. 6 is a second schematic structural diagram of a ripple voltage control system according to an embodiment of the present invention;
fig. 7 is a third schematic structural diagram of a ripple voltage control system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Since the ripple voltage in the output voltage of the circuit has various adverse effects on the circuit, such as affecting the performance of the electronic device or shortening the service life of the electronic device connected in the circuit or causing noise to the electronic device, the ripple voltage in the output voltage needs to be controlled within an acceptable range when the circuit is designed.
At present, the ripple voltage in the output voltage is often controlled by turning on the load line and testing is performed by scanning different load line values to get the optimum performance of the circuit. When a large load line is turned on, the peak value of the output voltage can be reduced, but the valley value of the output voltage is also reduced to be lower; when the small load line is turned on, the degree of drop in the bottom of the output voltage is less than that when the large load line is turned on, but the degree of drop in the peak of the output voltage is also less than that when the large load line is turned on.
Therefore, it can be seen that, in the above method for controlling the ripple voltage in the output voltage by turning on the constant load line, the reduction of the peak value and the bottom value of the output voltage is simultaneous no matter the large load line is turned on or the small load line is turned on, that is, a lower peak value is brought while a lower bottom value is brought. Thus, the circuit cannot achieve optimum performance whether the control is performed by turning on the large load line or the small load line.
In view of the above situation, the present invention provides a ripple voltage control method, and fig. 1 is a schematic flowchart of the ripple voltage control method provided in an embodiment of the present invention, and as shown in fig. 1, the method includes:
in particular, an integrated circuit is a circuit that needs to control the ripple voltage in the output voltage. Before controlling the ripple voltage in the output voltage, the integrated circuit is monitored so as to obtain the monitoring data of the integrated circuit, thereby realizing the control of the ripple voltage in the output voltage of the integrated circuit according to the monitoring data of the integrated circuit. The monitoring data may be an output voltage of the integrated circuit, a load current of the integrated circuit, or an output voltage and a load current of the integrated circuit, which is not specifically limited in this embodiment of the present invention.
And step 120, if the output voltage undershoot of the integrated circuit is monitored to stop, starting load line control, wherein the output voltage undershoot is caused by sudden increase of load current of the integrated circuit.
Considering that when the ripple voltage in the output voltage is controlled by turning on the constant load line, the peak value and the valley value of the output voltage are simultaneously reduced no matter the large load line is turned on or the small load line is turned on, and the situation that the lower peak value is brought and the lower valley value is inevitably brought is also considered, the embodiment of the invention can lead the circuit to obtain the optimal performance by changing the situation that the load line is constant.
Specifically, fig. 2 is a schematic diagram of a load line according to an embodiment of the present invention, as shown in fig. 2, an output voltage of an integrated circuit decreases with a slope along with a rise of a load current, where the slope is a load line value, and a curve representing a relationship between the output voltage and the load current is the load line.
Fig. 3 is a waveform diagram of the load current and the output voltage according to an embodiment of the present invention, and as shown in fig. 3, the opening of the load line reduces the peak value and the valley value of the output voltage, the valley value of the output voltage is maximum when the load line is not opened, and the peak value of the output voltage is minimum when the large load line is opened. The ripple voltage is the difference between the peak value and the valley value of the output voltage, and controlling the ripple voltage in the output voltage can also be understood as making the valley value of the output voltage higher and the peak value smaller, so that the output voltage has smaller undershoot and overshoot. Referring to fig. 3, it can be seen that the output voltage of the un-turned-on load line undershoots less than the output voltage waveform of the turned-on load line when the load current suddenly increases, and the output voltage of the turned-on load line overshoots less than the output voltage waveform of the un-turned-on load line when the load current falls, and the overshoot is smaller for the larger load line.
It should be noted that the load current sudden increase herein refers to a situation that the magnitude of the increase of the load current in a short time exceeds a preset increase threshold, and the preset increase threshold is preset according to actual requirements and is used for judging whether the increase of the load current of the integrated circuit in a short time belongs to the load current sudden increase. Therefore, in the embodiment of the present invention, the ripple voltage in the output voltage can be controlled with reference to the time when the undershoot of the output voltage stops.
Since the time when the output voltage undershoot stops is a key factor for controlling the ripple voltage in the output voltage, in the embodiment of the present invention, before controlling the ripple voltage in the output voltage, the time when the output voltage undershoot stops needs to be determined, that is, whether the output voltage undershoot of the integrated circuit stops is determined, specifically, whether the output voltage undershoot of the integrated circuit stops may be determined according to the monitoring data obtained by monitoring the integrated circuit in step 110.
In the case where the load current is in a relatively stable state and no overshoot occurs, load line control is not performed for the "integrated circuit". In this case, if the load current suddenly increases, the integrated circuit is in a state where the load line is not turned on, the output voltage naturally drops, and a small undershoot is generated.
If the undershoot of the output voltage of the integrated circuit ceases, indicating that the output voltage has reached the valley, and thereafter begins to rise back, the load line control may be turned on at the time the output voltage reaches the valley, or during the time the output voltage begins to rise back after that time. In this case, if the load current falls back, the integrated circuit is in the load line on state, the output voltage naturally rises, and a small overshoot is generated.
It should be noted that after the output voltage recovers to be stable, the load line control needs to be turned off, so as to avoid the situation that the output voltage undershoots greatly when the load current suddenly increases again.
According to the ripple voltage control method provided by the embodiment of the invention, whether the output voltage undershoot of the integrated circuit stops is judged according to the monitoring data obtained by monitoring the integrated circuit, if the output voltage undershoot of the integrated circuit stops, the load line control is started, the problem that the ripple voltage in the output voltage cannot enable the circuit to have the optimal performance by starting the constant load line control is solved, the ripple voltage in the output voltage is controlled by taking the moment when the output voltage undershoot stops as a reference, the output voltage is ensured to have smaller overshoot and undershoot, and the performance of the circuit is optimized.
Based on the above embodiment, step 110 includes:
monitoring the load current of a power supply circuit of the integrated circuit;
and if the sudden increase of the load current is monitored, determining that the output voltage of the integrated circuit undershoots and stops after waiting for a preset time.
Because the output voltage undershoot can be caused by the sudden increase of the load current of the integrated circuit, in the embodiment of the present invention, before the ripple voltage in the output voltage is controlled, the monitoring of the integrated circuit may specifically be monitoring the load current of the integrated circuit, so as to determine whether the undershoot of the output voltage of the integrated circuit stops according to the load current of the integrated circuit, thereby implementing the control of the ripple voltage in the output voltage with the time when the undershoot of the output voltage stops as a reference.
Specifically, the load current of the integrated circuit is monitored, and if the load current of the integrated circuit is monitored to suddenly increase, which indicates that the output voltage of the integrated circuit starts to decrease, the output voltage is determined to reach a valley value after waiting for a preset time, that is, the output voltage undershoots and stops. The preset time is the time period from the output voltage beginning to drop to the output voltage dropping to the valley, i.e. the difference between the time of the load current surge and the time of the output voltage undershoot stop, and the preset time can be measured in advance according to the performance of the integrated circuit.
The length of the preset time is not limited to the difference between the time when the load current suddenly increases and the time when the output voltage undershoot stops, and may be greater than the difference between the time when the load current suddenly increases and the time when the output voltage undershoot stops. Meanwhile, the preset time is less than or equal to the difference between the moment when the load current suddenly increases and the moment when the output voltage tends to be stable when the large load line is turned on, so that the control effect of the ripple voltage in the output voltage can be optimal, namely the waveform of the output voltage is an ideal waveform, fig. 4 is a schematic diagram of the ideal waveform of the output voltage provided by the embodiment of the invention, as shown in fig. 4, compared with other waveforms, the ideal waveform of the output voltage has the minimum overshoot and undershoot, and the circuit can have the optimal performance.
Based on the above embodiment, if the load current sudden increase is monitored, determining that the output voltage undershoot of the integrated circuit stops after waiting for the preset time includes:
and if the load current sudden increase is monitored and the amplitude of the load current sudden increase is larger than a preset amplitude threshold value, determining that the output voltage of the integrated circuit undershoots and stops after waiting for a preset time.
Because the load current of the integrated circuit is not stable and constant and fluctuates occasionally, the fluctuation of the load current is not severe under the condition, and strong undershoot and overshoot of the output voltage of the integrated circuit can not be caused, namely the load line is not required to be started for control. Therefore, in order to avoid the situation, the embodiment of the invention may preset an amplification threshold according to actual requirements, and determine whether the output voltage undershoot is too large due to the sudden increase of the load current of the integrated circuit according to the preset amplification threshold.
Specifically, if it is monitored that the load current of the integrated circuit suddenly increases and the amplitude of the load current suddenly increases is larger than a preset amplification threshold, which indicates that the output voltage of the integrated circuit is excessively undershot due to the sudden increase of the load current at the moment, the undershoot of the output voltage of the integrated circuit is determined to be stopped after waiting for a preset time, and then the load line is started to control the ripple voltage in the output voltage.
Based on the above embodiment, step 110 includes:
monitoring the output voltage of the integrated circuit;
and if the sudden drop of the output voltage is monitored, comparing the output voltage at the previous moment with the output voltage at the current moment, and determining that the undershoot of the output voltage of the integrated circuit stops when the output voltage at the current moment is greater than or equal to the output voltage at the previous moment.
In particular, before controlling the ripple voltage in the output voltage, the output voltage monitoring of the integrated circuit, i.e. monitoring the output voltage of the integrated circuit, may also be performed.
If the sudden drop of the output voltage of the integrated circuit is monitored, the undershoot of the output voltage of the integrated circuit is indicated, at this time, if the ripple voltage in the output voltage is to be controlled, whether the undershoot of the output voltage of the integrated circuit stops or not needs to be determined, specifically, the undershoot of the output voltage of the integrated circuit is determined by comparing the output voltage of the integrated circuit at the current moment with the output voltage of the integrated circuit at the previous moment, and if the output voltage of the integrated circuit at the current moment is greater than or equal to the output voltage of the integrated circuit at the previous moment, the undershoot of the output voltage of the integrated circuit is determined to stop.
It should be noted that the sudden drop of the output voltage refers to a situation where the amplitude of the drop of the output voltage in a short time exceeds a preset drop threshold, and the preset drop threshold is preset according to actual requirements and is used for evaluating whether the drop of the output voltage of the integrated circuit in a short time belongs to the sudden drop of the output voltage.
Correspondingly, if the output voltage at the current moment is smaller than the output voltage at the previous moment, which indicates that the output voltage is still falling, and the output voltage undershoot is not stopped, the monitoring is continued until the output voltage at the current moment is larger than or equal to the output voltage at the previous moment.
Based on the above embodiment, in step 120, if it is detected that the output voltage undershoot of the integrated circuit stops, the load line control is turned on, and then the method further includes:
and if the output voltage of the integrated circuit is recovered to a preset stable value after being monitored to rise back, closing the load line control.
Specifically, after the output voltage naturally rises and generates a small overshoot, the integrated circuit needs to be monitored, and if the situation that the output voltage of the integrated circuit recovers to a preset stable value to a stable set value after the output voltage naturally rises is monitored, the ripple voltage in the output voltage does not need to be controlled by the load line at the moment, the load line control is turned off, so that the situation that the output voltage undershoots a large amount when the load current suddenly increases again is avoided. Here, the predetermined stable value is determined by the output voltage of the integrated circuit when the load line is not turned on.
It should be noted that, the judgment that the output voltage of the integrated circuit is recovered to the preset stable value may be to determine that the output voltage of the integrated circuit is recovered to the preset stable value after a period of time after the load current is recovered to the preset stable value is monitored; the output voltage of the integrated circuit may also be restored to a preset stable value after the overshoot, and it is determined that the output voltage of the integrated circuit is restored to the preset stable value.
Correspondingly, if the output voltage of the integrated circuit is not monitored to return to the preset stable value after rising, which indicates that the ripple voltage in the output voltage still needs to be controlled by the load line at the moment, the current state is kept, namely the state of controlling the load line is started.
According to the ripple voltage control method provided by the embodiment of the invention, when the output voltage undershoot of the integrated circuit stops, the load line control is started to continue monitoring, and if the output voltage of the integrated circuit recovers to the preset stable value after rising back, the load line control is closed, so that the condition that the undershoot of the output voltage is larger due to the fact that the load current suddenly increases again is avoided, the ripple voltage in the output voltage is controlled by taking the time of undershoot stop and overshoot recovery of the output voltage as a reference, the output voltage is ensured to have smaller overshoot and undershoot, and the performance of the circuit is optimized.
The ripple voltage control system provided by the present invention is described below, and the ripple voltage control system described below and the ripple voltage control method described above may be referred to in correspondence.
Fig. 5 is a schematic structural diagram of a ripple voltage control system 500 provided in the present invention, and as shown in fig. 5, the system includes: ripple voltage control device 510, ripple voltage control device 510 includes:
a monitoring circuit 511 configured to monitor the integrated circuit;
a control circuit 512 configured to initiate load line control if it is monitored that an output voltage undershoot of the integrated circuit, which is caused by a sudden increase in load current of the integrated circuit, ceases.
According to the ripple voltage control system provided by the invention, the output voltage of the integrated circuit is judged according to the monitoring data obtained by monitoring the integrated circuit, and if the output voltage undershoot stops, the load line control is started, so that the problem that the ripple voltage in the output voltage cannot have the optimal performance by starting the constant load line control is solved, the ripple voltage in the output voltage is controlled by taking the moments of undershoot stop and overshoot stop of the output voltage as references, the output voltage is ensured to have smaller overshoot and undershoot, and the performance of the circuit is optimized.
Based on the above embodiments, the control circuit 512 is further configured to:
and if the output voltage of the integrated circuit is recovered to a preset stable value after being monitored to rise back, closing the load line control.
Specifically, after the output voltage naturally rises and generates a small overshoot, the control circuit 512 in the ripple voltage control device 510 further needs to monitor the integrated circuit, and if it is monitored that the output voltage of the integrated circuit recovers to a stable set value after rising, which indicates that the ripple voltage in the output voltage does not need to be controlled by the load line at this time, the load line control is turned off, so as to avoid a situation that the output voltage undershoots a large value due to the load current suddenly increasing again. Here, the predetermined stable value is determined by the output voltage of the integrated circuit when the load line is not turned on.
It should be noted that, the judgment that the output voltage of the integrated circuit is recovered to the preset stable value may be to determine that the output voltage of the integrated circuit is recovered to the preset stable value after a period of time after the load current is recovered to the preset stable value is monitored; the output voltage of the integrated circuit may be restored to a preset stable value after the overshoot, and it is determined that the output voltage of the integrated circuit is restored to the preset stable value.
Correspondingly, if the output voltage of the integrated circuit is not monitored to return to the preset stable value after rising, which indicates that the ripple voltage in the output voltage still needs to be controlled by the load line at the moment, the current state is kept, namely the state of controlling the load line is started.
According to the ripple voltage control system provided by the embodiment of the invention, when the output voltage of the integrated circuit undershoots and stops, the load line control is started to continue monitoring, and if the situation that the output voltage of the integrated circuit recovers to the preset stable value after rising back is monitored, the load line control is closed, so that the situation that the output voltage undershoots are large due to the fact that the load current suddenly increases again is avoided, the ripple voltage in the output voltage is controlled by taking the moments of stopping undershoots and recovering overshoots of the output voltage as references, the output voltage is ensured to have smaller overshoots and undershoots, and the performance of the circuit is optimized.
Based on the above embodiment, the system further includes a power supply circuit 520 and an integrated circuit 530;
the power supply circuit 520 is configured to supply power to the integrated circuit 530 and to transmit load current monitoring information to the monitoring circuit 511;
the integrated circuit 530 is configured to transmit output voltage monitoring information to the monitoring circuit 511.
Specifically, the ripple voltage control system 500 in the embodiment of the present invention includes not only the ripple voltage control device 510 composed of the monitoring circuit 511 and the control circuit 512, but also the power supply circuit 520 and the integrated circuit 530. The Power Circuit 520 (Power Circuit) is connected to the Integrated Circuit 530 (IC) and the ripple voltage control device 510, and configured to supply Power to the Integrated Circuit 530 and transmit the load current monitoring information to the monitoring Circuit 511 in the ripple voltage control device 510.
It should be noted that the ripple Voltage control device 510 may be a power supply Controller (VR Controller); the Integrated Circuit 530 may be an Application Specific Integrated Circuit (ASIC), or may be another type of Integrated Circuit, which is not limited in this embodiment of the present invention.
The integrated circuit 530 is connected to the ripple voltage control device 510, and is configured to transmit its output voltage monitoring information to the monitoring circuit 511 in the ripple voltage control device 510 through a feedback line.
Based on the above embodiment, the monitoring circuit 511 is configured to monitor the output voltage of the integrated circuit 530 to obtain the output voltage monitoring information, or monitor the output voltage of the integrated circuit 530 and the load current of the power supply circuit 520 to obtain the output voltage monitoring information and the load current monitoring information;
the control circuit 512 is configured to obtain the output voltage monitoring information and/or the load current monitoring information, determine whether undershoot of the output voltage of the integrated circuit 530 is stopped based on the output voltage monitoring information and/or the load current monitoring information, and determine whether the output voltage of the integrated circuit 530 recovers to a preset stable value after rising back.
Specifically, fig. 6 is a second schematic structural diagram of the ripple voltage control system according to the embodiment of the present invention, and as shown in fig. 6, the monitoring circuit 511 is configured to monitor the integrated circuit 530 and the power supply circuit 520, monitor the output voltage of the integrated circuit 530, or monitor the output voltage of the integrated circuit 530 and the load current of the power supply circuit 520, so as to obtain the output voltage monitoring information of the integrated circuit 530, or obtain the output voltage monitoring information of the integrated circuit 530 and the load current monitoring information of the power supply circuit 520, and transmit the load current monitoring information to the control circuit 512, or transmit the output voltage monitoring information to the control circuit 512, or transmit both the load current monitoring information and the output voltage monitoring information to the control circuit 512.
The control circuit 512 is configured to obtain the load current monitoring information transmitted by the monitoring circuit 511, determine whether the undershoot of the output voltage of the integrated circuit 530 stops based on the load current monitoring information, and determine whether the output voltage of the integrated circuit 530 recovers to a preset stable value after rising; or configured to obtain the output voltage monitoring information transmitted by the monitoring circuit 511, determine whether the undershoot of the output voltage of the integrated circuit 530 stops based on the output voltage monitoring information, and determine whether the output voltage of the integrated circuit 530 recovers to a preset stable value after rising back; or configured to acquire the load current monitoring information and the output voltage monitoring information transmitted by the monitoring circuit 511, determine whether the undershoot of the output voltage of the integrated circuit 530 stops based on the load current monitoring information and the output voltage monitoring information, and determine whether the output voltage of the integrated circuit 530 recovers to a preset stable value after rising.
Based on the above embodiment, the integrated circuit 530 is communicatively connected to the ripple voltage control device 510;
the integrated circuit 530 is configured to read the output voltage monitoring information and/or the load current monitoring information from the ripple voltage control device 510 to determine whether the output voltage undershoot is stopped and whether the output voltage recovers to a preset stable value after rising back, and send a control instruction to the control circuit 512, so that the control circuit 512 turns on load line control and turns off load line control based on the control instruction.
Specifically, in the ripple voltage control system 500, the integrated circuit 530 is communicatively connected to the control circuit 512 in the ripple voltage control device 510, and communicates via a communication line. Fig. 7 is a third schematic diagram of a ripple voltage control system according to an embodiment of the present invention, as shown in fig. 7, the integrated circuit 530 is configured to determine whether the output voltage undershoot stops according to the output voltage monitoring information, and determine whether the output voltage of the integrated circuit 530 recovers to a preset stable value after rising; or the voltage regulating circuit is configured to judge whether undershoot of the output voltage stops or not according to the load current monitoring information and whether the output voltage recovers to a preset stable value or not after rising; or the voltage undershoot detection circuit is configured to determine whether the output voltage undershoot stops or not according to the load current monitoring information and the output voltage monitoring information, and determine whether the output voltage recovers to a preset stable value or not after rising back.
The integrated circuit 530 is configured to send a control command to the control circuit 512 in the ripple voltage control device 510, so that the control circuit 512 performs corresponding operations according to the control command sent by the integrated circuit 530, where the control command may be a command to turn on the load line control or a command to turn off the load line control.
Fig. 8 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 8: a processor (processor) 810, a communication Interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication Interface 820 and the memory 830 communicate with each other via the communication bus 840. The processor 810 may invoke logic instructions in the memory 830 to perform a ripple voltage control method comprising: monitoring the integrated circuit; and if the output voltage undershoot of the integrated circuit is monitored to stop, starting load line control, wherein the output voltage undershoot is caused by the load current surge of the integrated circuit.
In addition, the logic instructions in the memory 830 can be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the ripple voltage control method provided by the above methods, the method comprising: monitoring the integrated circuit; and if the output voltage undershoot of the integrated circuit is monitored to stop, starting load line control, wherein the output voltage undershoot is caused by sudden increase of load current of the integrated circuit.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, is implemented to perform the above-provided ripple voltage control methods, the method comprising: monitoring the integrated circuit; and if the output voltage undershoot of the integrated circuit is monitored to stop, starting load line control, wherein the output voltage undershoot is caused by the load current surge of the integrated circuit.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A ripple voltage control method, comprising:
monitoring the integrated circuit;
if the output voltage undershoot of the integrated circuit is monitored to stop, starting load line control, wherein the output voltage undershoot is caused by the sudden increase of the load current of the integrated circuit;
the monitoring of the integrated circuit includes:
monitoring the output voltage of the integrated circuit;
and if monitoring the sudden drop of the output voltage, comparing the output voltage at the previous moment with the output voltage at the current moment, and determining that the output voltage of the integrated circuit undershoots and stops when the output voltage at the current moment is greater than or equal to the output voltage at the previous moment.
2. The ripple voltage control method of claim 1, wherein the monitoring the integrated circuit further comprises:
monitoring the load current of a power supply circuit of the integrated circuit;
and if the load current sudden increase is monitored, determining that the output voltage of the integrated circuit undershoots and stops after waiting for a preset time.
3. The ripple voltage control method of claim 2, wherein the determining that the undershoot of the output voltage of the integrated circuit stops after waiting a predetermined time if the sudden increase of the load current is monitored comprises:
and if the load current sudden increase is monitored and the amplitude of the load current sudden increase is larger than a preset amplitude threshold value, determining that the output voltage of the integrated circuit undershoots and stops after waiting for a preset time.
4. The ripple voltage control method according to any one of claims 1 to 3, wherein if it is monitored that the undershoot of the output voltage of the integrated circuit stops, then starting load line control, and thereafter further comprising:
and if the output voltage of the integrated circuit is recovered to a preset stable value after being monitored to rise back, closing the load line control.
5. A ripple voltage control system, comprising: a ripple voltage control device, the ripple voltage control device comprising:
a monitoring circuit configured to monitor the integrated circuit;
a control circuit configured to start load line control if it is monitored that an output voltage undershoot of the integrated circuit, which is caused by a load current surge of the integrated circuit, stops;
the monitoring of the integrated circuit comprises:
monitoring the output voltage of the integrated circuit;
and if monitoring the sudden drop of the output voltage, comparing the output voltage at the previous moment with the output voltage at the current moment, and determining that the output voltage of the integrated circuit undershoots and stops when the output voltage at the current moment is greater than or equal to the output voltage at the previous moment.
6. The ripple voltage control system of claim 5, wherein the control circuit is further configured to:
and if the output voltage of the integrated circuit is recovered to a preset stable value after being monitored to rise back, closing the load line control.
7. The ripple voltage control system of claim 6, further comprising a power supply circuit and the integrated circuit;
the power supply circuit is configured to supply power to the integrated circuit and transmit load current monitoring information to the monitoring circuit;
the integrated circuit is configured to transmit output voltage monitoring information to the monitoring circuit.
8. The ripple voltage control system of claim 7, wherein the monitoring circuit is configured to monitor an output voltage of the integrated circuit to obtain the output voltage monitoring information, or monitor an output voltage of the integrated circuit and a load current of the power supply circuit to obtain the output voltage monitoring information and the load current monitoring information;
the control circuit is configured to acquire the output voltage monitoring information and/or the load current monitoring information, determine whether undershoot of the output voltage of the integrated circuit stops based on the output voltage monitoring information and/or the load current monitoring information, and determine whether the output voltage of the integrated circuit recovers to the preset stable value after rising.
9. The ripple voltage control system of claim 7, wherein the integrated circuit is communicatively coupled to the ripple voltage control device;
the integrated circuit is configured to read the output voltage monitoring information and/or the load current monitoring information from the ripple voltage control device to determine whether the output voltage undershoot stops and whether the output voltage recovers to the preset stable value after rising back, and send a control instruction to the control circuit to enable the control circuit to start the load line control based on the control instruction and close the load line control.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the ripple voltage control method according to any one of claims 1 to 4 when executing the program.
11. A non-transitory computer readable storage medium, having stored thereon a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the ripple voltage control method according to any one of claims 1 to 4.
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| CN101282045B (en) * | 2008-04-28 | 2010-08-11 | 炬力集成电路设计有限公司 | Battery charging apparatus as well as control method thereof |
| TWI434502B (en) * | 2011-11-23 | 2014-04-11 | Holtek Semiconductor Inc | Power supply |
| CN105425882B (en) * | 2015-12-17 | 2017-06-27 | 中颖电子股份有限公司 | Improve the method and its voltage-stablizer of voltage-stablizer transient response |
| US10503231B2 (en) * | 2017-08-10 | 2019-12-10 | Microsoft Technology Licensing, Llc | Load line regulation via clamping voltage |
| CN108508951B (en) * | 2018-04-09 | 2020-04-28 | 广东工业大学 | LDO voltage regulator circuit without off-chip capacitor |
| US10935999B2 (en) * | 2019-08-01 | 2021-03-02 | Semiconductor Components Industries, Llc | Load line circuit for voltage regulators |
| CN110752741A (en) * | 2019-09-27 | 2020-02-04 | 深圳市汇川技术股份有限公司 | Method, system, equipment and medium for controlling high-voltage and low-voltage power supply driving circuit to be powered on and powered off |
| US10948934B1 (en) * | 2019-11-08 | 2021-03-16 | Alpha And Omega Semiconductor (Cayman) Limited | Voltage regulator with piecewise linear loadlines |
| CN111446932B (en) * | 2020-04-07 | 2022-08-12 | 思瑞浦微电子科技（苏州）股份有限公司 | Control circuit based on operational amplifier |
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