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

Texas Instruments UCC28C56EVM-066 User Manual

Igh-density 40-w auxilary power supply for 800-v traction inverters
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User's Guide
Using the UCC28C56EVM-066 High-Density 40-W Auxilary
Power Supply for 800-V Traction Inverters
Eric Reicher
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...................................................................................................................................................................
5.1 Efficiency versus load, 10% to 100% load.........................................................................................................................
5.3 Load regulation, 10% to 100% load.................................................................................................................................
Waveforms...........................................................................................................................................................12
5.8 Shutdown Waveforms......................................................................................................................................................
5.9 Output voltage ripple........................................................................................................................................................
5.10 Steady state switching waveforms.................................................................................................................................
5.11 Transient load waveforms..............................................................................................................................................
5.12 Over curent / short circuit protections............................................................................................................................
Measurements..................................................................................................................................................24
5.14 Thermal Measurements.................................................................................................................................................
6 Assembly and Printed Circuit Board (PCB).......................................................................................................................
(BOM)..........................................................................................................................................................33
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SLUUCN1 - JUNE 2022
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load.........................................................................................................................9
load...................................................................................................................................10
load......................................................................................................................11
loads...........................................................................................................................................11
Copyright © 2022 Texas Instruments Incorporated
Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for
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800-V Traction Inverters

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  • Page 1: Table Of Contents

    Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for 800-V Traction Inverters Eric Reicher 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 40W over the input voltage range from 125 V to 1000 V. The exact output voltage is load dependent.

  • Page 4: Evm Electrical Performance Specifications

    Max. temp. rise over T °C T1 at 1000 V = 2.7 A, 40 W 55.3 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 5: Schematic Diagram

    15.0k MMBT3904,215 22pF 0.91 0.91 2.00k HV_GND HV_GND HV_GND HV_GND HV_GND Figure 3-1. UCC28C56EVM-066 Schematic. SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary 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 SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...

  • Page 8: Evm Test Points

    Output voltage 14.5 V 15.5 V 20 V GND x5 Black ISO_GND x2 Black Isolated GND Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 9: Performance Data

    1.25 1.5 1.75 2.25 2.5 2.75 Load Current (A) Figure 5-2. UCC28C56EVM Power Loss vs Load SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...

  • Page 10: Load Regulation, 10% To 100% Load

    2.25 2.5 2.7 Load Current (A) Figure 5-4. UCC28C56EVM Output Voltage, 10% to 100% load Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

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

    2.0 A Load 2.7 A Load Input Voltage (V) Figure 5-6. UCC28C56EVM Line regulation, various loads SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary 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 Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright ©...
  • 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 SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary 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 Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright ©...
  • 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 SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary 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 Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright ©...
  • 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 SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary 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 Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright ©...
  • 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 SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary 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 Auxilary Power Supply for SLUUCN1 – JUNE 2022...
  • Page 21 Figure 5-25. Transient Response: VIN = 800 V, Load = 0.25 A to 1.3 A at 25 Hz, 50% duty Figure 5-26. Transient Response: VIN = 800 V, Load = 0.25 A to 2.7 A at 25 Hz, 50% duty SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for Submit Document Feedback 800-V Traction Inverters...

  • Page 22: Over Curent / Short Circuit Protections

    5.12 Over curent / 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 Auxilary Power Supply for SLUUCN1 – JUNE 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 SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...

  • Page 24: Stability Measurements

    5.13 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 Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright ©...
  • 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 SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary 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 Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright ©...
  • Page 27 1.25 1.5 1.75 2.25 2.5 2.75 Load Current (A) Figure 5-38. Transformer temperature vs load SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...
  • Page 28 RISE 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 Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 29 Figure 5-42. Transformer temperature is 86.7°C Figure 5-43. Output diode temperature is 61.5°C Figure 5-44. MOSFET temperature is 79.9°C SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...
  • Page 30 RISE Figure 5-45. Transformer temperature is 96.5°C Figure 5-46. Output diode temperature is 64.0°C Figure 5-47. MOSFET temperature is 101.0°C Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 31: 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 32 Assembly and Printed Circuit Board (PCB) www.ti.com Figure 6-3. UCC28C56EVM-066, Signal Layer 2, Routing for test points only Figure 6-4. UCC28C56EVM-066, PCB Bottom Layer, Assembly (mirrored view) Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for SLUUCN1 – JUNE 2022...

  • Page 33: Bill Of Materials (Bom)

    J1, J2, J3, J4 Terminal Block, 5.08 mm, 2x1, TH 2POS Terminal 1715721 Phoenix Contact Block SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...
  • Page 34 RES, 1.00 k, 1%, 0.125 W, AEC- 0805 CRCW08051K00 Vishay-Dale Q200 Grade 0, 0805 FKEA Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 35 FKEA 10.0 RES, 10.0, 1%, 0.1 W, AEC-Q200 0603 CRCW060310R0 Vishay-Dale Grade 0, 0603 FKEA SLUUCN1 – JUNE 2022 Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for Submit Document Feedback 800-V Traction Inverters Copyright © 2022 Texas Instruments Incorporated...
  • Page 36 Sb/Br) Notes: Unless otherwise noted in the Alternate PartNumber and/or Alternate Manufacturer columns, all parts may be substituted with equivalents. Using the UCC28C56EVM-066 High-Density 40-W Auxilary Power Supply for SLUUCN1 – JUNE 2022 800-V Traction Inverters Submit Document Feedback...
  • Page 37 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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