Texas Instruments UCC28C56EVM-066 User Manual
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Texas Instruments UCC28C56EVM-066 User Manual

Texas Instruments UCC28C56EVM-066 User Manual

High-density 40-w auxiliary power supply for 800-v traction inverters
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User's Guide
Using the UCC28C56EVM-066 High-Density 40-W
Auxiliary Power Supply for 800-V Traction Inverters
2 Description..............................................................................................................................................................................
2.1 EVM Electrical Performance Specifications.......................................................................................................................
3 Schematic Diagram................................................................................................................................................................
Operation......................................................................................................................................................6
4.1 Recommended Test Equipment.........................................................................................................................................
4.2 External Connections.........................................................................................................................................................
Points.................................................................................................................................................................8
5 Performance Data...................................................................................................................................................................
5.3 Power Loss Versus Load, 10% to 100% Load.................................................................................................................
5.5 Light Load Regulation, 0-mA to 200-mA Load.................................................................................................................
Waveforms...........................................................................................................................................................12
5.8 Shutdown Waveforms......................................................................................................................................................
5.9 Output Voltage Ripple......................................................................................................................................................
5.10 Steady State Switching Waveforms...............................................................................................................................
Waveforms.............................................................................................................................................20
Measurements..................................................................................................................................................24
5.14 Thermal Measurements.................................................................................................................................................
6 Assembly and Printed Circuit Board (PCB).......................................................................................................................
(BOM)..........................................................................................................................................................32
8 Revision History...................................................................................................................................................................
Trademarks
All trademarks are the property of their respective owners.
SLUUCN1C - JUNE 2022 - REVISED DECEMBER 2022
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Table of Contents

Load.......................................................................................................................9
Load..................................................................................................................................9
Load...............................................................................................................................10
Loads........................................................................................................................................11
Protections....................................................................................................................22
Copyright © 2022 Texas Instruments Incorporated
Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for
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800-V Traction Inverters

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Summary of Contents for Texas Instruments UCC28C56EVM-066

  • Page 1: Table Of Contents

    User’s Guide Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for 800-V Traction Inverters Table of Contents 1 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines..........2 Description....................................2.1 EVM Electrical Performance Specifications........................3 Schematic Diagram................................

  • Page 2: General Texas Instruments High Voltage Evaluation (Ti Hv Evm) User Safety Guidelines

    General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines www.ti.com 1 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.

  • Page 3: Description

    Description 2 Description The UCC28C56EVM-066 is a highly efficient primary-side controlled (using an AUX winding) flyback auxiliary power supply for EV/HEV automotive power trains. The design provides 15.2-V , 40-W output for 800-V battery systems. It will deliver 40 W over the input voltage range from 125 V to 1000 V. The exact output voltage is load dependent.

  • Page 4: Evm Electrical Performance Specifications

    °C T1 at 1000 V = 2.7 A, 40 W 55.3 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 5: Schematic Diagram

    Leading Edge HV_GND Blanking HV_GND HV_GND HV_GND Figure 3-1. UCC28C56EVM-066 Schematic. SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...

  • Page 6: Evm Setup And Operation

    Recommend one differential probe (±140V low range at 1/20, ±1400V high range at 1/200) 6. Thermal camera (optional) or thermocouple to measure T1 case temperature 4.2 External Connections The UCC28C56EVM-066 EVM utilizes screw terminals for quickly connecting to V and V . Connecting the appropriate ammeters and voltmeters, as shown in Figure 4-1, allows accurate EVM efficiency and load regulation measurements.
  • Page 7 VOUT £ for Current Measureme Figure 4-1. UCC28C56EVM-066, Recommended Efficiency and Typical Test Setup SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...

  • Page 8: Evm Test Points

    15.5 V 20 V GND x5 Black ISO_GND x2 Black Isolated GND Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 9: Performance Data

    VIN (V) Figure 5-2. UCC28C56EVM Efficiency Versus VIN at 100% Load SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...

  • Page 10: Power Loss Versus Load, 10% To 100% Load

    2.25 2.75 Load Current (A) Figure 5-4. UCC28C56EVM Load Regulation, 10% to 100% Load Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 11: Light Load Regulation, 0-Ma To 200-Ma Load

    2.7 A Load Input Voltage (V) Figure 5-6. UCC28C56EVM Line regulation, various loads SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...

  • Page 12: Startup Waveforms

    Figure 5-7. Start-Up 1: VIN = 50 V, Load = 0.25 A Figure 5-8. Start-Up 2: VIN = 50 V, Load = 1.3 A Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022...
  • Page 13 Figure 5-9. Start-Up 3: VIN = 1000 V, Load = 0.25 A Figure 5-10. Start-Up 4: VIN = 1000 V, Load = 2.7 A SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters...

  • Page 14: Shutdown Waveforms

    Figure 5-11. Shutdown, VIN Removal: VIN = 50 V, Load = 0.25 A Figure 5-12. Shutdown, VIN Removal: VIN = 50 V, Load = 1.3 A Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022...
  • Page 15 Figure 5-13. Shutdown, VIN Removal: VIN = 1000 V, Load = 0.25 A Figure 5-14. Shutdown, VIN Removal: VIN = 1000 V, Load = 2.7 A SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters...

  • Page 16: Output Voltage Ripple

    Figure 5-15. Output Voltage Ripple: VIN = 50 V, Load = 0.25 A Figure 5-16. Output Voltage Ripple: VIN = 50 V, Load = 1.3 A Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022...
  • Page 17 Figure 5-17. Output Voltage Ripple: VIN = 1000 V, Load = 0.25 A Figure 5-18. Output Voltage Ripple: VIN = 1000 V, Load = 2.7 A SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters...

  • Page 18: Steady State Switching Waveforms

    Figure 5-19. Steady State: VIN = 50 V, Load = 0.25 A Figure 5-20. Steady State: VIN = 50 V, Load = 1.3 A Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022...
  • Page 19 Figure 5-21. Steady State: VIN = 1000 V, Load = 0.25 A Figure 5-22. Steady State: VIN = 1000 V, Load = 2.7 A SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters...

  • Page 20: Transient Load Waveforms

    Figure 5-23. Transient Response: VIN = 50 V, Load = 100 mA to 650 mA at 25 Hz, 50% duty Figure 5-24. Transient Response: VIN = 50 V, Load = 100 mA to 1.3 A at 25 Hz, 50% duty Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022...
  • Page 21 Figure 5-26. Transient Response: VIN = 800 V, Load = 0.25 A to 2.7 A at 25 Hz, 50% duty SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright ©...

  • Page 22: Over Current And Short Circuit Protections

    Figure 5-27. 50 VIN, Startup with output shorted to ground Figure 5-28. 50 VIN, Output shorted to ground during operation Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 800-V Traction Inverters Submit Document Feedback Copyright ©...
  • Page 23 Figure 5-29. 800 VIN, Startup with output shorted to ground Figure 5-30. 800 VIN, Output shorted to ground during operation SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters...

  • Page 24: Stability Measurements

    Figure 5-31. Bode Plot: VIN = 50 V, Load = 0.25A Figure 5-32. Bode Plot: VIN = 50 V, Load = 1.3 A Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022...
  • Page 25 Figure 5-33. Bode Plot: VIN = 800 V, Load = 0.25 A Figure 5-34. Bode Plot: VIN = 800 V, Load = 2.7 A SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters...

  • Page 26: Thermal Measurements

    Figure 5-35. UCC28C56H EVM in plexiglass enclosure for HV safety. Virtually no airflow. Figure 5-36. Thermocouple taped to windings Figure 5-37. Black tape for thermal camera Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 800-V Traction Inverters Submit Document Feedback Copyright ©...
  • Page 27 2.25 2.5 2.75 Load Current (A) Figure 5-38. Transformer temperature vs load SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...
  • Page 28 Figure 5-39. Transformer temperature is 55.7°C Figure 5-40. Output diode temperature is 43.6°C Figure 5-41. MOSFET temperature is 46.3°C Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 800-V Traction Inverters Submit Document Feedback...
  • Page 29 Figure 5-43. Output diode temperature is 61.5°C Figure 5-44. MOSFET temperature is 72.8°C SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...

  • Page 30: Assembly And Printed Circuit Board (Pcb)

    6 Assembly and Printed Circuit Board (PCB) The UCC28C56EVM-066 is designed using a four-layer PCB. Only traces on the top and bottom layers are used for UCC28C56 connections, so the EVM is basically a two-layer PCB. The two middle layers are dedicated to routing only the test points.
  • Page 31 Assembly and Printed Circuit Board (PCB) Figure 6-3. UCC28C56EVM-066, Signal Layer 2, Routing for test points only Figure 6-4. UCC28C56EVM-066, PCB Bottom Layer, Assembly (mirrored view) SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for...

  • Page 32: Bill Of Materials (Bom)

    Mounting Kit, DISCARD the TO_220 4880SG Aavid Thermalloy thermal pad, Use SILPAD1 instead Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 33 RES, 4.02 k, 1%, 0.125 W, AEC- 0805 CRCW08054K02 Vishay-Dale Q200 Grade 0, 0805 FKEA SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...
  • Page 34 RES, 2.00 k, 1%, 0.1 W, AEC-Q200 0603 ERJ3EKF2001V Panasonic Grade 0, 0603 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 35: Revision History

    Updated Schematic diagram..........................• Updated PCB images............................• Updated Bill of Materials...........................32 SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...
  • Page 36 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2022, Texas Instruments Incorporated...

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