ASIL D safety concept-assessed high-speed traction, bi-directional DC/DC conversion reference design
TIDM-02009
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Key Document

Description

This reference design demonstrates control of HEV/EV traction inverter and bi-directional DC-DC converter by a single TMS320F28388D real-time C2000™ MCU. The traction control uses a software-based resolver to digital converter (RDC) driving the motor to a high speed up to 20,000 RPM. The DC-DC converter uses peak current mode control (PCMC) technique with phase-shifted full-bridge (PSFB) topology and synchronous rectification (SR) scheme. The traction inverter stage uses silicon carbide (SiC) power stage, driven by UCC5870-Q1 smart gate driver. PCMC waveform is generated using state-of-the-art PWM module and built-in slope compensation in the comparator sub-system (CMPSS). An ASIL decomposition based functional safety concept for the system has been assessed with TÜV SÜD to demonstrate system level safety integrity level up to ISO 26262 ASIL D for representative safety goals.

Features
  • EV traction inverter with SiC power stage running at high speed (up to 20,000 RPM)
  • Bi-directional HV-LV phase-shifted full bridge (PSFB) DC-DC converter with SiC primary FET
  • Software based resolver to digital conversion (RDC) supporting motor run at high speed
  • Integrated control of traction inverter and DCDC converter using single TMS320F28388D
  • TÜV SÜD assessed ASIL D functional safety concept based on ASIL decomposition
  • Peak current mode control (PCMC) with no external support circuitry for PCMC function with synchronous rectification (SR) switching scheme

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TI Devices (12)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ALM2402F-Q1  High output current operational amplifier for automotive, dual channel  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
AMC1302-Q1  Automotive ±50-mV-input, high-precision, reinforced isolated amplifier for current sensing  Isolation  Sample & Buy View Design Kits & Evaluation Modules
AMC1311-Q1  Automotive 2-V input, reinforced isolated amplifier with high CMTI for voltage sensing  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LM73605-Q1  Automotive Qualified 3.5V to 36V, 5A Synchronous Step-Down Voltage Converter  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
SN6501-Q1  Automotive low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies  Power for signal isolators  Sample & Buy View Design Kits & Evaluation Modules
TCAN1042-Q1  Automotive fault-protected CAN transceiver with flexible data-rate  Interface  Sample & Buy View Design Kits & Evaluation Modules
TCAN4550-Q1  Automotive system basis chip (SBC) with integrated CAN FD controller & transceiver  Interface  Sample & Buy View Design Kits & Evaluation Modules
TMS320F28388D  C2000™ 32-bit MCU w/ connectivity manager, 2x C28x+CLA CPU, 1.5-MB flash, FPU64, CLB, ENET, EtherCAT  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
TMS570LS1227  16/32 Bit RISC Flash MCU, Cortex R4F, Auto Q100, Flexray, EMAC  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
UCC21530-Q1  Automotive, 4-A, 6-A, 5.7-kVrms isolated dual-channel gate driver with enable   Gate drivers  Sample & Buy View Design Kits & Evaluation Modules
UCC27524A-Q1  Automotive 5-A/5-A dual-channel gate driver with 5-V UVLO and negative input voltage handling  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules
UCC5870-Q1  Automotive, functional safety compliant 15-A isolated IGBT/SiC MOSFET gate driver  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ALM2402F-Q1 Download
AMC1302-Q1 Download
AMC1311-Q1 Download
LM73605-Q1 Download Download
SN6501-Q1 Download
TCAN1042-Q1 Download Download
Download Download
TCAN4550-Q1 Download Download
TMS320F28388D Download -
Download Download
TMS570LS1227 Download Download
Download -
UCC21530-Q1 Download
UCC27524A-Q1 Download
Download Download
UCC5870-Q1 Download

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Technical documentation

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Data sheet (1)
Title Type Size (KB) Date
PDF 8819 02 Feb 2021
User guide (1)
Title Type Size (KB) Date
PDF 4927 05 May 2021
Design files (6)
Title Type Size (KB) Date
ZIP 12316 10 Mar 2021
ZIP 93383 10 Mar 2021
ZIP 12350 10 Mar 2021
ZIP 2185 10 Mar 2021
PDF 450 10 Mar 2021
ZIP 2859 10 Mar 2021
More literature (1)
Title Type Size (KB) Date
PDF 130 10 Mar 2021
Related Tools & Software

Reference Designs (1)

Hardware development (1)

Name Part Number Tool Type
F28388D controlCARD evaluation module  TMDSCNCD28388D  Daughter card 

Software development (1)

Name Part Number Software Type
DigitalPower software development kit (SDK) for C2000™ MCUs  C2000WARE-DIGITALPOWER-SDK  Software development kit (SDK) 


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