Texas Instruments UCC28782EVM-030 User manual

User’s Guide
Using the UCC28782EVM-030 65-W USB-C PD High-
Density Active-Clamp Flyback Converter
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Table of Contents
1 Using the UCC28782EVM-030 65-W USB-C PD High-Density Active-Clamp Flyback Converter.................................... 2
2 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines............................................ 3
3 Description.............................................................................................................................................................................. 4
4 Electrical Performance Specifications................................................................................................................................. 6
5 Schematic Diagram................................................................................................................................................................ 7
6 Description.............................................................................................................................................................................. 9
6.1 Typical Application............................................................................................................................................................. 9
6.2 Using the EVM on a Load with USB-C PD Communication...............................................................................................9
6.3 Using the EVM on a Load without USB-C PD Communication..........................................................................................9
7 Test Setup..............................................................................................................................................................................10
7.1 Test Setup Requirements.................................................................................................................................................10
7.2 Test Setup Diagram..........................................................................................................................................................11
7.3 Test Points........................................................................................................................................................................11
8 Performance Data and Typical Characteristic Curves...................................................................................................... 12
8.1 Efficiency Result of 4-Point Average on 20-Vout..............................................................................................................12
8.2 Efficiency Result of 4-Point Average at 15-Vout...............................................................................................................13
8.3 Efficiency Result of 4-Point Average at 9-Vout.................................................................................................................14
8.4 Efficiency Result of 4-Point Average at 5-Vout.................................................................................................................15
8.5 Efficiency Typical Results.................................................................................................................................................16
8.6 Output Characteristics......................................................................................................................................................16
8.7 Switching Frequency........................................................................................................................................................17
8.8 Key Switching Waveforms and Operation Mode Load Current........................................................................................17
8.9 Start Up............................................................................................................................................................................ 18
8.10 Output Voltage Adjustment by USB-C PD..................................................................................................................... 19
8.11 Line Transient Response................................................................................................................................................19
8.12 Output Ripple Voltage.................................................................................................................................................... 19
8.13 Boost Function for VDD Bias......................................................................................................................................... 21
8.14 X-Capacitor Discharge................................................................................................................................................... 21
8.15 USB-C PD Over Current Limit........................................................................................................................................21
8.16 Load Transient Response.............................................................................................................................................. 22
8.17 EN55022 Class B Conducted EMI Test Result.............................................................................................................. 23
8.18 Thermal Images at Full Load (20V and 3.25 A)............................................................................................................. 25
9 Transformer Details.............................................................................................................................................................. 27
10 EVM Assembly and Layout................................................................................................................................................28
11 List of Materials...................................................................................................................................................................30
12 Revision History................................................................................................................................................................. 32
Trademarks
All trademarks are the property of their respective owners.
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2 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety
Guidelines
WARNING
Always follow TI’s setup and application instructions, including use of all interface components within their
recommended electrical rated voltage and power limits. Always use electrical safety precautions to help
ensure your personal safety and those working around you. Contact TI's Product Information Center http://
support/ti./com for further information.
Save all warnings and instructions for future reference.
WARNING
Failure to follow warnings and instructions may result in personal injury, property damage or death
due to electrical shock and burn hazards.
The term TI HV EVM refers to an electronic device typically provided as an open framed, unenclosed printed
circuit board assembly. It is intended strictly for use in development laboratory environments, solely for qualified
professional users having training, expertise and knowledge of electrical safety risks in development and
application of high voltage electrical circuits. Any other use and/or application are strictly prohibited by Texas
Instruments. If you are not suitable qualified, you should immediately stop from further use of the HV EVM.
1. Work Area Safety
a. Keep work area clean and orderly.
b. Qualified observer(s) must be present anytime circuits are energized.
c. Effective barriers and signage must be present in the area where the TI HV EVM and its interface
electronics are energized, indicating operation of accessible high voltages may be present, for the
purpose of protecting inadvertent access.
d. All interface circuits, power supplies, evaluation modules, instruments, meters, scopes and other related
apparatus used in a development environment exceeding 50Vrms/75VDC must be electrically located
within a protected Emergency Power Off EPO protected power strip.
e. Use stable and nonconductive work surface.
f. Use adequately insulated clamps and wires to attach measurement probes and instruments. No
freehand testing whenever possible.
2. Electrical Safety
As a precautionary measure, it is always a good engineering practice to assume that the entire EVM may
have fully accessible and active high voltages.
a. De-energize the TI HV EVM and all its inputs, outputs and electrical loads before performing any
electrical or other diagnostic measurements. Revalidate that TI HV EVM power has been safely de-
energized.
b. With the EVM confirmed de-energized, proceed with required electrical circuit configurations, wiring,
measurement equipment connection, and other application needs, while still assuming the EVM circuit
and measuring instruments are electrically live.
c. After EVM readiness is complete, energize the EVM as intended.
WARNING
While the EVM is energized, never touch the EVM or its electrical circuits, as they could be at
high voltages capable of causing electrical shock hazard.
3. Personal Safety
a. Wear personal protective equipment (for example, latex gloves or safety glasses with side shields) or
protect EVM in an adequate lucent plastic box with interlocks to protect from accidental touch.
Limitation for safe use:
EVMs are not to be used as all or part of a production unit.
www.ti.com General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
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3 Description
The UCC28782EVM-030 is a 65-W USB-C PD evaluation module (EVM) for evaluating an off-line active-clamp
flyback adapter for notebook charging and other applications. The EVM meets CoC Tier 2 and DoE Level
6 efficiency requirements. It is intended for evaluation purposes and is not intended to be an end product.
The UCC28782EVM-030 converts input voltage of 90-VRMS to 264-VRMS down to USB-C PD selectable output
voltage 20-VDC, with a max 3.25-A, and to 5-VDC, 9-VDC, and 15-VDC, with a max 3.00-A output current rating
and a 160-ms limit for over-power capability. The main devices used in this design are active clamp flyback
controller UCC28782 and GaN MOSFETs. Please read this user's guide thoroughly before applying power to this
board.
Figure 3-1. UCC28782EVM-030 top View
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Figure 3-2. UCC28782EVM-030 bottom View
Figure 3-3. High-Density Configuration
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4 Electrical Performance Specifications
Table 4-1. UCC28782EVM-030 Electrical Performance Specifications(2)
PARAMETER TEST CONDITIONS MIN NOM MAX UNIT
INPUT CHARACTERISTICS
VIN Input line voltage (RMS) 90 115 / 230 264 V
fLINE Input line frequency 47 50 / 60 63 Hz
PSTBY Input power at no-load VIN = 115/230 VRMS, IOUT = 0 A 45 / 55 mW
P0.25W Input power at 0.25W load VIN = 115/230 VRMS, POUT = 250 mW 359 / 399 mW
OUTPUT CHARACTERISTICS
VOUT
Output voltage (USB-C PD) VIN =
90 to 264 VRMS
IOUT = 0 to 3.25 A 19.950 V
IOUT = 0 to 3.00 A
15.060
9.050
5.050
IOUT
Full load rated output current VIN
= 90 to 264 VRMS
VOUT = 20.0 V 3.250 A
VOUT = 5.0, 9.0, or 15.0 V 3.000
VOUT_pp
Output ripple voltage VIN = 115
V / 230 VRMS
VOUT = 20.0 V, IOUT = 0 to 3.25 A 150 mVpp
VOUT = 15.0 V, IOUT = 0 to 3.00 A 150
VOUT = 9.0 V, IOUT = 0 to 3.00 A 150
VOUT = 5.0 V, IOUT = 0 to 3.00 A 150
VOUT_Δ
Output voltage deviation due to
load step Up / Down (IOUT step
change between 0 and 100%
load at 100 Hz rate)
VOUT = 20.0 V -604 / 340 mVpp
VOUT = 15.0 V -584 / 360
VOUT = 9.0 V -404 / 304
VOUT = 5.0 V -404 / 304
POUT_opp Over-power protection threshold VIN = 90 to 264 VRMS 70 W
SYSTEMS CHARACTERISTICS
η
Full-load efficiency (VIN=
115/230VRMS)
VOUT = 20 V, IOUT = 3.25A 94.2 / 94.2 %
VOUT = 15 V, IOUT = 3.00A 94.2 / 93.7
VOUT = 9 V, IOUT = 3.00A 93.5 / 93.0
VOUT = 5 V, IOUT = 3.00A 91.9 / 90.8
η
4-point average efficiency(1) VIN=
115/230 VRMS
VOUT = 20 V (CoC Tier 2, 89.0%) 93.4 / 92.4 %
VOUT = 15 V (CoC Tier 2, 88.9%) 93.1 / 91.7
VOUT = 9 V (CoC Tier 2, 87.3%) 90.9 / 88.6
VOUT = 5 V (CoC Tier 2, 81.8%) 88.0 / 84.1
η
Efficiency at 10% Load
VIN= 115/230 VRMS
VOUT = 20 V (CoC Tier 2, 79.0%) 89.0 / 83.8 %
VOUT = 15 V (CoC Tier 2, 78.9%) 87.9 / 82.6
VOUT = 9 V (CoC Tier 2, 77.3%) 85.8 / 79.8
VOUT = 5 V (CoC Tier 2, 72.5%) 82.0 / 76.8
TAMB Ambient operating temperature
range
VIN = 90 to 264 VRMS, IOUT = 0 to 3.00A (5V/9V/
15V), or 3.25A (20V)
25 °C
(1) Average efficiency of four load points, IOUT = 100%, 75%, 50% and 25% of rated full-load current for each respective output voltage.
(2) The performance listed in this table is achieved using secondary resonance and based on the test results from a single board.
Electrical Performance Specifications www.ti.com
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5 Schematic Diagram
Figure 5-1. UCC28782EVM-030 Schematic Diagram (1 of 2)
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Figure 5-2. UCC28782EVM-030 Schematic Diagram (2 of 2)
Schematic Diagram www.ti.com
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6 Description
6.1 Typical Application
• USB-C PD Power Adapters
• USB-C PPS Power Adapters
• AC-to-DC or DC-to-DC auxiliary power supplies
• High-density AC-to-DC converters / Adapters for notebook computers, tablet computers, TV, and set-top box
6.2 Using the EVM on a Load with USB-C PD Communication
UCC28782EVM-030 comes populated with USB-C PD controller (WT6636F) and requires external connection
through an on-board USB-C connector to a USB-C PD load so to adjust the board output to obtain 5-V, 9-V, 15-V
or 20-V. A USB-C PD communicating load is required in order to make the board evaluation. An example of such
a load is PM110, USB Power Delivery Tester, and PassMark Software. Without such a communication load, the
board output USB-C connector (J1) does not provide output voltage. Besides, to get full load current 3.00-A from
5-V, 9-V and 15-V, a USB-C cable without E-mark may be used, but to get 3.25-A at 20-V output, an E-mark
USB-C cable has to be used. In case the EVM is desired to test on a load without USB-C PD communication,
the next section describes how to modify the board to make test.
6.3 Using the EVM on a Load without USB-C PD Communication
Normally, a USB-C PD communicated load is required in order to make evaluation. Without such a USB-C PD
communication-based load, the board does not provide output voltage on USB-C (J1) connector. In such a case,
the board output voltage can be obtained from C37 but only 5-V and up to 3.00-A can be obtained.
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7 Test Setup
7.1 Test Setup Requirements
Safety: This evaluation module is not encapsulated and there are accessible voltages that are greater than 50
VDC.
Isolation Input Transformer: A suitably rated 1:1 isolation transformer shall be used on the input(s) to this EVM
and be constructed in a manner in which the primary winding(s) are separated from the secondary winding(s) by
reinforced insulation, double insulation, or a screen connected to the protective conductor terminal.
WARNING
• If you are not trained in the proper safety of handling and testing power electronics please do not
test this evaluation module.
• While the EVM is energized, never touch the EVM or its electrical circuits, as they could be at
high voltages capable of causing electrical shock hazard.
• Caution Hot surface. Contact may cause burns. Do not touch!
• Read this user's guide thoroughly before making test.
Voltage Source: Isolated AC source or variable AC transformer capable of 264 VRMS and capable of handling
100 W power level. Warning: Do not apply DC voltage to this board when making test, or damage may
happen. If DC voltage source has to be used, the XCD pins need to be grounded by adding R3 = 0 Ω and
removing Q3.
Voltmeter: Digital voltage meter
Power Analyzer: Capable of measuring 1 mW to 100 W of input power and capable of handling 264-VRMS input
voltage. Some power analyzers may require a precision shunt resistor for measuring input current to measure
input power of 5 W or less. Please read the power analyzer’s user manual for proper measurement setups for
full power and for stand-by power.
Oscilloscope:
• 4-Channel, 500 MHz bandwidth.
• Probes capable of handling 600 V.
Output Load: Resistive or electronic load capable of handling 100 W at 20 V.
Recommended Wire Gauge: Insulated 22 AWG to 18 AWG.
WARNING
Caution: Do not leave EVM powered when unattended.
!! Do not apply DC voltage source to this board or damage may happen !! (See above setup of
Voltage Source)
Test Setup www.ti.com
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7.2 Test Setup Diagram
Figure 7-1. UCC28782EVM-030 Test Setup Diagram
7.3 Test Points
Table 7-1. Input / Output Terminals and Test Point Functions
Terminals and TEST POINTS NAME DESCRIPTION
J1 Location J1 Terminal J1 USB-C
J2-L Location J2 Terminal L AC voltage input - Line
J2-N N AC voltage input - Neutral
TPL Input test points TPL AC input monitor - Line
TPN Input test points TPL AC input monitor -Neutral
TP1 to TP4 Floating test points TP1, TP2, TP3, TP4 Floating, need to solder connections, leave them floating if not used
TP5 to TP8 Floating test points TP5, TP6, TP7, TP8 Floating, need to solder connections, leave them floating if not used
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8 Performance Data and Typical Characteristic Curves
8.1 Efficiency Result of 4-Point Average on 20-Vout
Table 8-1. Efficiency Test Data on 20-Vout
VIN (VRMS) PIN (W) VOUT (V) IOUT (A) POUT(%) EFFICIENCY EFFICIENCY
4pt-AVERAGE
Average
Switching
Frequency @
Full Load
90 69.693 20.010 3.250 100% 93.31% 150 kHz
90 52.107 20.010 2.440 75% 93.70%
90 35.067 20.000 1.630 50% 92.96%
90 17.583 20.000 0.810 25% 92.13%
90 7.269 20.000 0.325 10% 89.42%
115 68.871 19.953 3.250 100% 94.16% 93.4% 160 kHz
115 51.772 19.952 2.440 75% 94.03%
115 34.912 19.945 1.630 50% 93.12%
115 17.535 19.945 0.810 25% 92.13%
115 7.284 19.943 0.325 10% 88.99%
230 69.940 19.944 3.250 100% 94.02% 92.4% 220 kHz
230 52.065 19.946 2.440 75% 93.48%
230 35.343 19.947 1.630 50% 91.99%
230 17.950 19.943 0.810 25% 89.99%
230 7.733 19.942 0.325 10% 83.81%
264 69.440 20.010 3.250 100% 93.65% 230 kHz
264 52.558 20.010 2.440 75% 92.90%
264 35.744 20.000 1.630 50% 91.20%
264 18.252 20.000 0.810 25% 88.76%
264 7.979 20.000 0.325 10% 81.47%
CoC Tier 2, 4pt-average 89.0%
CoC Tier 2, 10%-load 79.0%
Performance Data and Typical Characteristic Curves www.ti.com
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8.2 Efficiency Result of 4-Point Average at 15-Vout
Table 8-2. Efficiency Test Data on 15-Vout
VIN (VRMS) PIN (W) VOUT (V) IOUT (A) POUT(%) EFFICIENCY EFFICIENCY
4pt-AVERAGE
Average
Switching
Frequency @
Full Load
90 48.061 15.019 3.000 100% 93.75% 155 kHz
90 36.039 15.015 2.250 75% 93.74%
90 24.315 15.014 1.500 50% 92.62%
90 12.296 15.013 0.750 25% 91.57%
90 5.071 15.009 0.300 10% 88.79%
115 47.673 14.968 3.000 100% 94.19% 93.1% 176 kHz
115 35.851 14.968 2.250 75% 93.94%
115 24.230 14.969 1.500 50% 92.67%
115 12.274 14.967 0.750 25% 91.46%
115 5.107 14.967 0.300 10% 87.91%
230 47.953 14.976 3.000 100% 93.69% 91.7% 192 kHz
230 36.174 14.972 2.250 75% 93.12%
230 24.534 14.971 1.500 50% 91.553%
230 12.708 14.969 0.750 25% 88.34%
230 5.439 14.969 0.300 10% 82.56%
264 48.242 15.020 3.000 100% 93.40% 190 kHz
264 36.535 15.018 2.250 75% 92.49%
264 24.734 15.016 1.500 50% 91.06%
264 13.123 15.013 0.750 25% 85.80%
264 5.553 15.010 0.300 10% 81.10%
CoC Tier 2, 4pt-average 88.9%
CoC Tier 2, 10%-load 78.9%
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8.3 Efficiency Result of 4-Point Average at 9-Vout
Table 8-3. Efficiency Test Data on 9-Vout
VIN (VRMS) PIN (W) VOUT (V) IOUT (A) POUT(%) EFFICIENCY EFFICIENCY
4pt-AVERAGE
Average
Switching
Frequency @
Full Load
90 28.912 8.987 3.000 100% 93.25% 133 kHz
90 21.927 8.985 2.250 75% 92.20%
90 15.573 8.983 1.500 50% 86.52%
90 7.49 8.982 0.750 25% 90.43%
90 3.089 8.981 0.300 10% 87.23%
115 28.836 8.987 3.000 100% 93.50% 90.9% 140 kHz
115 21.937 8.986 2.250 75% 92.17%
115 15.152 8.984 1.500 50% 88.94%
115 7.562 8.982 0.750 25% 89.08%
115 3.141 8.981 0.300 10% 85.78%
230 29.001 8.987 3.000 100% 92.97% 88.62% 132 kHz
230 22.432 8.985 2.250 75% 90.12%
230 15.323 8.985 1.500 50% 87.96%
230 8.074 8.984 0.750 25% 83.45%
230 3.378 8.982 0.300 10% 79.76%
264 29.108 8.987 3.000 100% 92.62% 129 kHz
264 22.677 8.984 2.250 75% 89.14%
264 15.458 8.986 1.500 50% 87.19%
264 8.271 8.982 0.750 25% 81.44%
264 3.391 8.981 0.300 10% 79.45%
CoC Tier 2, 4pt-average 87.3%
CoC Tier 2, 10%-load 77.3%
Performance Data and Typical Characteristic Curves www.ti.com
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8.4 Efficiency Result of 4-Point Average at 5-Vout
Table 8-4. Efficiency Test Data on 5-Vout
VIN (VRMS) PIN (W) VOUT (V) IOUT (A) POUT(%) EFFICIENCY EFFICIENCY
4pt-AVERAGE
Average
Switching
Frequency @
Full Load
90 16.201 4.959 3.000 100% 91.84% 95 kHz
90 12.643 4.952 2.250 75% 88.13%
90 8.512 4.951 1.500 50% 87.25%
90 4.312 4.949 0.750 25% 86.09%
90 1.732 4.948 0.300 10% 85.69%
115 16.174 4.953 3.000 100% 91.87% 88.0% 96 kHz
115 12.614 4.951 2.250 75% 88.31%
115 8.571 4.949 1.500 50% 88.61%
115 4.349 4.948 0.750 25% 85.34%
115 1.810 4.948 0.300 10% 82.02%
230 16.357 4.951 3.000 100% 90.81% 84.1% 82 kHz
230 13.045 4.950 2.250 75% 85.38%
230 9.117 4.949 1.500 50% 81.42%
230 4.702 4.947 0.750 25% 78.91%
230 1.928 4.947 0.300 10% 76.96%
264 16.328 4.953 3.000 100% 91.00% 79 kHz
264 13.148 4.952 2.250 75% 84.74%
264 9.315 4.950 1.500 50% 79.71%
264 4.811 4.948 0.750 25% 77.14%
264 2.003 4.948 0.300 10% 74.11%
CoC Tier 2, 4pt-average 81.8%
CoC Tier 2, 10%-load 72.5%
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8.5 Efficiency Typical Results
Figure 8-1. 4pt-Average Efficiency vs. Input Voltage Figure 8-2. Efficiency of 10%-Load vs. Input
Voltage
Figure 8-3. Full-load Efficiency vs. Input Voltage
Figure 8-4. Efficiency of 50%-load vs. Input Voltage
8.6 Output Characteristics
Figure 8-5. VOUT at Full-Load vs. Input Voltge Figure 8-6. VOUT vs. Output Current
Performance Data and Typical Characteristic Curves www.ti.com
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8.7 Switching Frequency
Figure 8-7. Average Switching Frequency vs. Input
at 20-Vo Full Load Figure 8-8. Maximum switching frequency about
240 kHz (Yellow = PWML, Green = Transformer
Primary Winding Current, Red = Switch Node
Voltage
8.8 Key Switching Waveforms and Operation Mode Load Current
This section shows typical operation modes in Table 8-5 along with typical load currents in this design and with
Vin = 115Vac and Vo = 20V as an example.
• AAM: Adaptive Amplitude Modulation
• ABM: Adaptive Burst Mode
• LPM: Low Power Mode
• SBP1: First Standby Power Mode
• SBP2: Second Standby Power Mode
Table 8-5. Operation Mode and Load Current at 20-V Output and 115Vac Input
Mode AAM ABM LPM SBP1 SBP2 Survival
Burst Frequency,
fBUR
Not Applicable > 25kHz (2 to 9
pulses)
about 25kHz (2
pulses)
8.5kHz to 25kHz (2
pulses)
< 8.5kHz (2
pulses)
about 8 pulses
Typical Load
Current
1.8 A to 3.25 A 0.5 A to 1.8 A 0.2 A to 0.5 A 0.1 A to 0.2 A < 0.1 A Not Applicable
Figure 8-9. Typcial Waveform in AAM Operation
Yellow = PWML, Red = PWMH, Green =
Transformer Primary Winding Current (0.2 V/A),
Blue = Switch Node Voltage
Figure 8-10. Typical Waveform in ABM Operation
Yellow = PWML, Red = PWMH, Green =
Transformer Primary Winding Current (0.2 V/A),
Blue = Switch Node Voltage
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Figure 8-11. Typical Waveform in ABM Operation
Yellow = PWML, Red = Vgs of SR MOSFET, Green
= Transformer Primary Winding Current (0.2 V/A),
Blue = Switch Node Voltage
Figure 8-12. Typical Waveform in LPM Operation
Yellow = PWML, Red = PWMH, Green =
Transformer Primary Winding Current (0.2 V/A),
Blue = Switch Node Voltage
Figure 8-13. Typical Waveform in SBP1 Operation
Yellow = PWML, Red = PWMH, Green =
Transformer Primary Winding Current (0.2 V/A),
Blue = Switch Node Voltage
Figure 8-14. Typical Waveform in SBP2 Operation
Yellow = PWML, Red = PWMH, Green =
Transformer Primary Winding Current (0.2 V/A),
Blue = Switch Node Voltage
8.9 Start Up
Yellow = PWML, Red = Switch Node Voltage, Blue = Output Voltage, Green = Transformer Primary Winding
Current.
Figure 8-15. 115 VAC and Full Load Startup Figure 8-16. 230 VAC and Full Load Startup
Performance Data and Typical Characteristic Curves www.ti.com
18 Using the UCC28782EVM-030 65-W USB-C PD High-Density Active-Clamp
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8.10 Output Voltage Adjustment by USB-C PD
Figure 8-17. USB-C PD Output Change from 5 V to
20 V
Figure 8-18. USB-C PD Output Change from 20 V to
5 V
Figure 8-19. 5-V Output Power On Figure 8-20. 5-V Output Power Off
8.11 Line Transient Response
Yellow = VOUT, Red = Line voltage.
Figure 8-21. Output Voltage Response to Line
Transient with Full Load.
Figure 8-22. Output Voltage Response to Line
Transient with No Load.
8.12 Output Ripple Voltage
Blue = Output Voltage Ripple, Oscilloscope Channel Bandwidth = 20 MHz, Voltage span between two dashed
lines is 150 mV. The ripples are with the 50% load condition unless specified in the associated figures.
www.ti.com Performance Data and Typical Characteristic Curves
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Figure 8-23. Typical Ripple Voltage of VOUT = 20 V Figure 8-24. Typical Ripple Voltage of VOUT = 15 V
Figure 8-25. Typical Ripple Voltage of VOUT = 9 V Figure 8-26. Typical Ripple Voltage of VOUT = 5 V
Figure 8-27. Typical Ripple Voltage of VOUT = 5 V at
No Load
Figure 8-28. Typical Ripple Voltage of VOUT = 5 V at
Full Load
Performance Data and Typical Characteristic Curves www.ti.com
20 Using the UCC28782EVM-030 65-W USB-C PD High-Density Active-Clamp
Flyback Converter
SLUUBZ3B – MAY 2020 – REVISED AUGUST 2020
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