lm5033 3376660
lm5033 3376660
lm5033 3376660
LM5033
SNVS181C – APRIL 2004 – REVISED AUGUST 2016
VIN VOUT
LM5033
+
VIN OUT1
OUT2
VCC CS
REF
ISOLATED
RT COMP
FEEDBACK
SS GND
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LM5033
SNVS181C – APRIL 2004 – REVISED AUGUST 2016 www.ti.com
Table of Contents
1 Features .................................................................. 1 7.4 Device Functional Modes........................................ 11
2 Applications ........................................................... 1 8 Application and Implementation ........................ 12
3 Description ............................................................. 1 8.1 Application Information............................................ 12
4 Revision History..................................................... 2 8.2 Typical Application .................................................. 12
5 Pin Configuration and Functions ......................... 3 9 Power Supply Recommendations...................... 15
6 Specifications......................................................... 4 10 Layout................................................................... 15
6.1 Absolute Maximum Ratings ...................................... 4 10.1 Layout Guidelines ................................................. 15
6.2 ESD Ratings.............................................................. 4 10.2 Layout Example .................................................... 16
6.3 Recommended Operating Conditions....................... 4 11 Device and Documentation Support ................. 17
6.4 Thermal Information .................................................. 4 11.1 Documentation Support ........................................ 17
6.5 Electrical Characteristics........................................... 5 11.2 Receiving Notification of Documentation Updates 17
6.6 Typical Characteristics .............................................. 6 11.3 Community Resources.......................................... 17
7 Detailed Description .............................................. 8 11.4 Trademarks ........................................................... 17
7.1 Overview ................................................................... 8 11.5 Electrostatic Discharge Caution ............................ 17
7.2 Functional Block Diagram ......................................... 8 11.6 Glossary ................................................................ 17
7.3 Feature Description................................................... 9 12 Mechanical, Packaging, and Orderable
Information ........................................................... 17
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
• Added Device Information table, Pin Configuration and Functions section, Specifications section, ESD Ratings table,
Thermal Information table, Detailed Description section, Application and Implementation section, Power Supply
Recommendations section, Layout section, Device and Documentation Support section, and Mechanical,
Packaging, and Orderable Information section ...................................................................................................................... 1
• Deleted Ordering Information Table; see POA at the end of the datasheet .......................................................................... 1
• Changed values in the Thermal Information table to align with JEDEC standards ............................................................... 4
VIN 1 10 SS
REF 2 9 RT/SYNC
COMP 3 Thermal 8 CS
Pad
VCC 4 7 GND
OUT1 5 6 OUT2
Not to scale
Pin Functions
PIN
I/O DESCRIPTION
NAME NO.
Feedback to the inverting input of the PWM comparator, through a 3:1 divider. The output duty cycle
COMP 3 I
increases as the voltage to this pin increases. Internally there is a 5-kΩ pullup resistor to 5.2 V.
Current sense input for the current limit detection. If voltage to this pin exceeds 0.5 V the outputs are
CS 8 I
disabled and the soft-start (SS) pin is discharged to ground.
Connections to external ground must be done with care for optimum performance. See Feature
GND 7 —
Description and Application and Implementation for more information.
OUT1 5 O Alternating output gate driver, which can source and sink 1.5 A.
OUT2 6 O Alternating output gate driver, which can source and sink 1.5 A.
Sink only, requires an external pullup resistor. This can be used as a 2.5-V precision output reference
REF 2 O
for external circuitry.
Oscillator timing resistor pin and synchronization input. An external resistor to ground sets the oscillator
RT/SYNC 9 I
frequency. This pin also accepts AC-coupled synchronization pulses from an external source.
Soft-start pin. An internal 10-µA current source and an external capacitor set the soft-start timing. This
SS 10 I
pin can be externally pulled to below 0.5 V to disable the output drivers.
9.6-V output from the internal high voltage series pass regulator. An external voltage, 10 V to 15 V, can
VCC 4 I/O be applied to this pin to shutdown the internal regulator, reducing internal dissipation. An internal diode
connects VCC to VIN.
VIN 1 I Input to the start-up regulator. Input range from 15 V to 90 V, with transient capability to 100 V.
(1) The exposed die attach pad on the WSON package must be connected to a PCB thermal pad at ground
Exposed Pad — —
potential. See AN-1187 Leadless Leadframe Package (LLP) (SNOA401).
6 Specifications
6.1 Absolute Maximum Ratings
(1)
see
MIN MAX UNIT
VIN to GND –0.3 100 V
VCC to GND –0.3 16 V
RT/SYNC to GND –0.3 5.5 V
COMP, CS, and SS to GND –0.3 7 V
(2)
Power dissipation Internally Limited
Maximum junction temperature, TJ(MAX) 150 °C
Storage temperature, Tstg –65 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The maximum allowable power dissipation is a function of the maximum allowed junction temperature (TJ(max)), the ambient temperature
(TA), and the junction-to-ambient thermal resistance (θJA). The maximum allowable power dissipation can be calculated from PD =
(TJ(max) – TA) / θJA. Excessive power dissipation causes the thermal shutdown to activate.
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
(1) Minimum and maximum limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through
correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate TI’s Average Outgoing Quality Level (AOQL).
(2) Typical specifications represent the most likely parametric norm at 25°C operation.
16 16
14 14
12 12
10 10
VCC (V)
VCC (V)
8 8
6 6
4 4
2 2
VCC not externally powered
0 0
0 2 4 6 8 10 12 14 16 0 5 10 15 20 25 30 35 40
VIN = 48 V
201
200
199
100 198
1 10 100 -50 0 50 100 150 200
o
RT (k:) TEMPERATURE ( C)
RT = 26.7 kΩ
150
10.2
145
DEADTIME (ns)
10.0
ISS (PA)
140
9.8
135
9.6 130
9.4 125
-50 0 50 100 150 -50 0 50 100 150
o
TEMPERATURE ( C) TEMPERATURE ( C) o
3.0
OUTPUT DUTY CYCLE (%)
40
2.5
30
VREF (V)
2.0
1.5
20
1.0
10
0.5
0 0
0 1.0 2.0 3.0 4.0 5.0 0 5 10 15 20 25
RT = 16.5 kΩ
IIN (mA)
6
4
4 Pin 10 = 0V
SS Pin = 0V
Output Load = 0 2
2 Output Load = 0 pF
0 0
10 11 12 13 14 15 0 20 40 60 80 100
7 Detailed Description
7.1 Overview
The LM5033 high-voltage PWM controller contains all of the features necessary to implement push-pull and
bridge topologies, using voltage-mode control in a small 10-pin package. Features include a start-up regulator,
precision 2.5-V reference output, current limit detection, alternating gate drivers, sync capability, thermal
shutdown, soft start, and remote shutdown. This high-speed IC has total propagation delays less than 100 ns.
These features simplify the design of an open-loop DC-DC converter, or a voltage controlled closed-loop
converter.
9.6V SERIES
(1) VIN REGULATOR VCC (4)
5.2V
REFERENCE 4.9V
GENERATOR 2.5V
START UP 0.5V
CIRCUIT 2.5V REF (2)
Disable
UNDERVOLTAGE
SENSOR
THERMAL
SHUTDOWN VCC
SENSOR
OUT2 (6)
CLK
D Q
C
0.65V Q
0V
5.2V RAMP
GENERATOR S SET Q
R Q
5k PWM CLR
10k +
(3) COMP
-
5k VCC
Offset
+
- OUT1 (5)
SS Current Sense
(8) CS
+ DRIVER
0.5V -
GND (7)
5.0V
SS 10 A
(10) SS
LOGIC
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.2.2.1 VIN
The voltage applied at VIN, normally the same as that applied to the primary of the main transformer, can be
from 15 V to 90 V, with transient capability to 100 V. The current into VIN depends not only on VIN, but also on
the load on the output driver pins, any load on VCC, and whether or not an external voltage is applied to VCC. If
VIN is close to the absolute maximum rating of the LM5033, TI recommends the circuit of Figure 12 be used to
filter transients which may occur at the input supply.
Supply
Voltage
50
VIN
LM5033
0.1 PF
If VCC is not powered externally, requiring all internal bias currents for the LM5033, and output driver currents, to
be supplied at VIN and through the internal regulator, the required input current (IIN) is shown in Figure 10.
If VCC is powered externally, IIN increases with VIN as shown in Figure 9 until the external voltage is applied to
VCC. In most applications, this occurs once the outputs are enabled and load current begins to flow. The current
into VIN then drops to a nominal 150 µA; SS is either open or grounded.
8.2.2.2 VCC
The capacitor at the VCC pin provides not only noise filtering and stability, but also a necessary time delay
during start-up. The time delay allows the internal circuitry of the LM5033, and associated external circuitry, to
stabilize before VCC reaches its final value, at which time the outputs are enabled and the soft-start sequence
begins. Any external circuitry connected to the REF output and SS must be designed to stabilize during the time
delay.
The current limit of the VCC regulator, and the external capacitor, determine the VCC turnon time delay.
Typically, a 1-µF capacitor provides approximately 300 µs of delay, with larger capacitors providing
proportionately longer delays. Experimentation with the final design may be necessary to determine the minimum
value for the VCC capacitor.
Reduce Deadtime
Out1 Hi
LM5033 LM5100
Out2 Li
Increase Deadtime
Out1 Hi
LM5033 LM5100
Out2 Li
100 14.0
95 12.0
VIN = 60V
EFFICIENCY (%)
VOUT (V)
90 10.0
VIN = 48V
85 8.0
40V < VIN < 60V
VIN = 40V
80 6.0
0 5 10 15 20 0 5 10 15 20
OUTPUT CURRENT (A) OUTPUT CURRENT (A)
Figure 14. Efficiency vs Output Current Figure 15. VOUT vs Load Current and VIN
10 Layout
CVIN CSS
VIN SS
CREF RT
REF RT
LM5033 CCS
COMP CS
CVCC
VCC GND
To Current Sense Resistor
OUT1 OUT2 To Gate Drive 2
To Gate Drive 1
To Isolated Feedback
Copyright © 2016, Texas Instruments Incorporated
Figure 16. Layout Recommendation
11.4 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
11.5 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
11.6 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
www.ti.com 20-Oct-2023
PACKAGING INFORMATION
Orderable Device Status Package Type Package Pins Package Eco Plan Lead finish/ MSL Peak Temp Op Temp (°C) Device Marking Samples
(1) Drawing Qty (2) Ball material (3) (4/5)
(6)
LM5033MM/NOPB LIFEBUY VSSOP DGS 10 1000 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 SCVB
LM5033MMX/NOPB ACTIVE VSSOP DGS 10 3500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 SCVB Samples
LM5033SD/NOPB LIFEBUY WSON DPR 10 1000 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 5033SD
LM5033SDX/NOPB ACTIVE WSON DPR 10 4500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 5033SD Samples
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com 20-Oct-2023
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com 21-Oct-2021
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com 21-Oct-2021
Pack Materials-Page 2
PACKAGE OUTLINE
DGS0010A SCALE 3.200
VSSOP - 1.1 mm max height
SMALL OUTLINE PACKAGE
C
5.05
TYP SEATING PLANE
4.75
A PIN 1 ID 0.1 C
AREA
8X 0.5
10
1
3.1
2.9 2X
NOTE 3 2
5
6
0.27
10X
0.17
3.1 0.1 C A B 1.1 MAX
B
2.9
NOTE 4
0.23
TYP
SEE DETAIL A 0.13
0.25
GAGE PLANE
0.7 0.15
0 -8 0.05
0.4
DETAIL A
TYPICAL
4221984/A 05/2015
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not
exceed 0.15 mm per side.
4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side.
5. Reference JEDEC registration MO-187, variation BA.
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EXAMPLE BOARD LAYOUT
DGS0010A VSSOP - 1.1 mm max height
SMALL OUTLINE PACKAGE
10X (1.45)
10X (0.3) SYMM (R0.05)
1 TYP
10
SYMM
8X (0.5) 5 6
(4.4)
4221984/A 05/2015
NOTES: (continued)
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EXAMPLE STENCIL DESIGN
DGS0010A VSSOP - 1.1 mm max height
SMALL OUTLINE PACKAGE
10X (1.45)
SYMM (R0.05) TYP
10X (0.3)
1
10
SYMM
8X (0.5)
5 6
(4.4)
4221984/A 05/2015
NOTES: (continued)
8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
9. Board assembly site may have different recommendations for stencil design.
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PACKAGE OUTLINE
DPR0010A SCALE 3.000
WSON - 0.8 mm max height
PLASTIC SMALL OUTLINE - NO LEAD
4.1 A
B
3.9
(0.2)
4.1
PIN 1 INDEX AREA 3.9 FULL R
ALTERNATIVE LEAD
20.000
DETAIL
0.8
0.7
C
SEATING PLANE
0.05
0.00 0.08 C
EXPOSED
THERMAL PAD 2.6 0.1 (0.1) TYP
SEE ALTERNATIVE
LEAD DETAIL
5 6
2X
3.2 11
3 0.1
8X 0.8
1
10
0.35
10X
PIN 1 ID 0.5 0.25
10X
0.3 0.1 C A B
0.05 C
4218856/B 01/2021
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. The package thermal pad must be soldered to the printed circuit board for thermal and mechanical performance.
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EXAMPLE BOARD LAYOUT
DPR0010A WSON - 0.8 mm max height
PLASTIC SMALL OUTLINE - NO LEAD
(2.6)
1 10
10X (0.3)
(1.25)
SYMM 11
(3)
8X (0.8)
6
5
( 0.2) VIA (1.05)
(R0.05) TYP TYP
(3.8)
0.07 MIN
0.07 MAX
ALL AROUND
ALL AROUND
EXPOSED EXPOSED
METAL METAL
4218856/B 01/2021
NOTES: (continued)
4. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature
number SLUA271 (www.ti.com/lit/slua271).
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EXAMPLE STENCIL DESIGN
DPR0010A WSON - 0.8 mm max height
PLASTIC SMALL OUTLINE - NO LEAD
SYMM
10X (0.6)
METAL (0.68)
TYP
1 10
10X (0.3)
(0.76)
11 SYMM
8X (0.8)
4X
(1.31)
5 6
(3.8)
4218856/B 01/2021
NOTES: (continued)
5. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
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