CN201803140U - Light emitting diode (LED) module with transient voltage suppressors - Google Patents
Light emitting diode (LED) module with transient voltage suppressors Download PDFInfo
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- CN201803140U CN201803140U CN2010202235352U CN201020223535U CN201803140U CN 201803140 U CN201803140 U CN 201803140U CN 2010202235352 U CN2010202235352 U CN 2010202235352U CN 201020223535 U CN201020223535 U CN 201020223535U CN 201803140 U CN201803140 U CN 201803140U
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- transient voltage
- voltage suppressor
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- drive circuit
- power supply
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Abstract
The utility model discloses a light emitting diode (LED) module with transient voltage suppressors. The LED module comprises a power supply, a driving circuit, an LED lamp, and at least three transient voltage suppressors, wherein the driving circuit is provided with a power input end and a signal input end, the power input end of the driving circuit is electrically connected with the power supply, and the signal input end of the driving circuit is electrically connected with a control signal source; and the first transient voltage suppressor is electrically connected between the power input end of the driving circuit and the power supply, the second transient voltage suppressor is electrically connected between the power input end of the LED lamp and the power supply, and the third transient voltage suppressor is electrically connected between the signal input end of the driving circuit and the control signal source. The LED module of the utility model has the beneficial effects that because input voltages at the signal input end and the power input end are clamped by the transient voltage suppressors, the production of excessive electrical stresses can be effectively avoided.
Description
Technical field
The utility model relates to a kind of LED module, relates in particular to a kind of LED module with Transient Voltage Suppressor.
Background technology
Excessively electrical stress, English is: Electrical Overstress is abbreviated as: EOS.Concrete implication is that the function of this device can weaken or disappear after having born the electrical situation that surpasses device maximum specific limited.
Generally cause the reason of EOS to have following several:
One, device is in test process, and the surging that plug (hot plug) causes, temporary impulse wave disturb and cause EOS.
Two, power supply supply (interchange, direct current) noise and voltage raise and cause EOS.
Three, bad test environment causes EOS.
Four, from the burst transmissions of other equipment that are electrically connected with described device, cause EOS.
Five, incorrect working procedure operation causes EOS.
The input of existing LED module comprises power supply input and two kinds of electricity inputs of signal input, module power on and powering-off state under the order of power line and holding wire plug in specification or operation manual, have a detailed description, if under the situation of maloperation, will cause EOS.The how generation of the more effective EOS of avoiding and to solve EOS better be the technical problem that LED module field faces.
The utility model content
The technical problem that the utility model mainly solves provides a kind of LED module with Transient Voltage Suppressor, on the module of LED, adopt the transient voltage suppression circuit design, this kind design prevents and avoids EOS, so that be can be applicable to brightening fields such as LED display and LED lamp bar, lamp string, LED spot light.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of LED module with Transient Voltage Suppressor is provided, comprise power supply, drive circuit, the LED lamp, drive circuit has power input and signal input part, the power input of this drive circuit is electrically connected with described power supply, the signal input part of this drive circuit is electrically connected with a control signal source, also comprise at least three Transient Voltage Suppressors, first Transient Voltage Suppressor is connected electrically between the power input and described power supply of described drive circuit, second Transient Voltage Suppressor is connected electrically between the power input and described power supply of described LED lamp, and the 3rd Transient Voltage Suppressor is connected electrically between the signal input part and described control signal source of described drive circuit.
The beneficial effects of the utility model are: the LED module that is different from prior art is under the situation of maloperation, will cause excessively electrically stress, the utility model proposes a kind of LED module with Transient Voltage Suppressor, this module carries out clamper by being with Transient Voltage Suppressor to the input voltage of signal input part and power input, can effectively avoid the excessively electrically generation of stress.
Description of drawings
Fig. 1 is the block diagram of the utility model LED module;
Fig. 2 is the electrical connection schematic diagram of the utility model LED module.
The specific embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1, the LED module of the utility model band Transient Voltage Suppressor, comprise power supply 1, drive circuit 2, LED lamp 3, drive circuit 2 has power input and signal input part, the power input of this drive circuit is electrically connected with described power supply 1, the signal input part of this drive circuit is used for being electrically connected with control signal source 4, also comprise at least three Transient Voltage Suppressors, first Transient Voltage Suppressor 5 is connected electrically between the power input and described power supply of described drive circuit, second Transient Voltage Suppressor 6 is connected electrically between the power input and described power supply of described LED lamp, and the 3rd Transient Voltage Suppressor 7 is connected electrically between the signal input part and described control signal source of described drive circuit.
See also Fig. 2, the signal input of described drive circuit is electrically connected with described control signal source by four signal connecting terminals; Described four signal connecting terminals are respectively: clock signal splicing ear CLK, latch signal splicing ear LATCH, data input signal splicing ear SDI and enable signal splicing ear QE.The power input of described drive circuit is electrically connected with described power supply by two power connector end; Described two power connector end are respectively: the LED module drives chip power splicing ear VCC and the sub-VDD of LED lamp power connector end.
On the circuit design of led module, adopt the transient voltage suppressor (Transient Voltage Suppressor is TVS) that increases the EOS guard assembly to protect.
Introduce the definition that transient voltage suppresses diode below.Transient Voltage Suppressor (TransientVoltage Suppressor) is called for short TVS, is a kind of high-effect protection device of diode form, also is TVP, AJTVS, SAJTVS etc. on the document that has.When the two poles of the earth of TVS diode are subjected to reverse transient state high energy impact events; it can be with the speed of 10-12 second-time; the high impedance of its two interpolar is become Low ESR; the surge power of absorption up to thousands of watts; the voltage clamp that makes two interpolars is in a predetermined value; protect the precision components in the electronic circuit effectively, avoid the damage of various surge pulses.It has fast, advantage such as transient power is big, leakage current is low, the breakdown voltage deviation is little, clamping voltage is more easy to control, do not have to damage the limit, volume is little of response time.
Here we adopt unidirectional TVS.As unidirectional TVS diode D1, D2, D3, D4, D5 and D6 among Fig. 2 can be used for anti-lightning strike, anti-overvoltage, anti-interference, absorb surge power etc., be a kind of desirable protection device.
We are being added in the TVS diode on signal and the power line, can prevent the LED module because of the pulse of moment, as the surge of static discharge effect, AC power and Switching Power Supply that noise caused was malfunctioning.No matter be in charged hot plug or the not right situation of power line when cut-offfing electricity, holding wire plug order under, the LED module has better the excessively electrically protective capacities of stress.This kind design at first is applied in me and takes charge of P20 customization module, does not have because the module condition of poor appears in above-mentioned situation.
Selecting for use of Transient Voltage Suppressor:
1.TVS specified reverse shutoff VRWM should equal the maximum working voltage of protected circuit.If the VRWM that selects for use is too low, device may enter snowslide or because of the too big operate as normal that influences circuit of reverse leakage current.
2.TVS maximum clamp voltage VC should be less than the damage voltage of protected circuit.It can not be greater than the born limiting voltage in protected loop, otherwise element faces the danger that is damaged.
VRWM: keep voltage-at the state of this stage TVS for not conducting.
VC: the voltage that diode provides in cut-off state, the just voltage by TVS when the EOS impact conditions.
The LED module of band Transient Voltage Suppressor of the present utility model carries out clamper by Transient Voltage Suppressor to the input voltage of signal input part and power input, can effectively avoid the excessively electrically generation of stress.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (5)
1. LED module with Transient Voltage Suppressor, comprise power supply, drive circuit, the LED lamp, drive circuit has power input and signal input part, the power input of this drive circuit is electrically connected with described power supply, the signal input part of this drive circuit is electrically connected with a control signal source, it is characterized in that: also comprise at least three Transient Voltage Suppressors, first Transient Voltage Suppressor is connected electrically between the power input and described power supply of described drive circuit, second Transient Voltage Suppressor is connected electrically between described LED lamp and the described power supply, and the 3rd Transient Voltage Suppressor is connected electrically between the signal input part and described control signal source of described drive circuit.
2. the LED module of band Transient Voltage Suppressor according to claim 1 is characterized in that: described Transient Voltage Suppressor is that transient voltage suppresses diode.
3. the LED module of band Transient Voltage Suppressor according to claim 2 is characterized in that: the signal input part of described drive circuit is electrically connected with described control signal source by four signal connecting terminals; Described four signal connecting terminals are respectively: clock signal splicing ear, latch signal splicing ear, data input signal splicing ear and enable signal splicing ear.
4. the LED module of band Transient Voltage Suppressor according to claim 3 is characterized in that: the power input of described drive circuit is electrically connected with described power supply by two power connector end; Described two power connector end are respectively: the LED module drives chip power splicing ear and LED lamp power connector end.
5. the LED module of band Transient Voltage Suppressor according to claim 4 is characterized in that: it is unidirectional Transient Voltage Suppressor that described transient voltage suppresses diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202235352U CN201803140U (en) | 2010-06-11 | 2010-06-11 | Light emitting diode (LED) module with transient voltage suppressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202235352U CN201803140U (en) | 2010-06-11 | 2010-06-11 | Light emitting diode (LED) module with transient voltage suppressors |
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| Publication Number | Publication Date |
|---|---|
| CN201803140U true CN201803140U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202235352U Expired - Lifetime CN201803140U (en) | 2010-06-11 | 2010-06-11 | Light emitting diode (LED) module with transient voltage suppressors |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10248372B2 (en) | 2013-12-31 | 2019-04-02 | Ultravision Technologies, Llc | Modular display panels |
| US10373535B2 (en) | 2013-12-31 | 2019-08-06 | Ultravision Technologies, Llc | Modular display panel |
| US10706770B2 (en) | 2014-07-16 | 2020-07-07 | Ultravision Technologies, Llc | Display system having module display panel with circuitry for bidirectional communication |
-
2010
- 2010-06-11 CN CN2010202235352U patent/CN201803140U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10248372B2 (en) | 2013-12-31 | 2019-04-02 | Ultravision Technologies, Llc | Modular display panels |
| US10373535B2 (en) | 2013-12-31 | 2019-08-06 | Ultravision Technologies, Llc | Modular display panel |
| US10380925B2 (en) | 2013-12-31 | 2019-08-13 | Ultravision Technologies, Llc | Modular display panel |
| US10410552B2 (en) | 2013-12-31 | 2019-09-10 | Ultravision Technologies, Llc | Modular display panel |
| US10540917B2 (en) | 2013-12-31 | 2020-01-21 | Ultravision Technologies, Llc | Modular display panel |
| US10871932B2 (en) | 2013-12-31 | 2020-12-22 | Ultravision Technologies, Llc | Modular display panels |
| US10706770B2 (en) | 2014-07-16 | 2020-07-07 | Ultravision Technologies, Llc | Display system having module display panel with circuitry for bidirectional communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |