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


Design files


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.

  • 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

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUEY6.PDF (4927 K)

Reference design overview and verified performance test data

TIDM817.ZIP (2859 K)

Detailed schematic diagram for design layout and components

TIDM818.PDF (450 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDM819.ZIP (2185 K)

Detailed overview of design layout for component placement

TIDM821.ZIP (93383 K)

Files used for 3D models or 2D drawings of IC components

TIDCFZ8.ZIP (12316 K)

Design file that contains information on physical board layer of design PCB

TIDM820.ZIP (12350 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

C2000 real-time microcontrollers

TMS320F28388DC2000™ 32-bit MCU w/ connectivity manager, 2x C28x+CLA CPU, 1.5-MB flash, FPU64, CLB, ENET, EtherCAT

Data sheet document-pdfAcrobat PDF open-in-new HTML
Arm-based microcontrollers

TMS570LS122716/32 Bit RISC Flash MCU, Cortex R4F, Auto Q100, Flexray, EMAC

Data sheet document-pdfAcrobat PDF
Buck converters (integrated switch)

LM73605-Q1Automotive qualified 3.5-V to 36-V, 5-A synchronous step-down voltage converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
CAN & LIN transceivers & SBCs

TCAN1042-Q1Automotive fault-protected CAN transceiver with flexible data-rate

Data sheet document-pdfAcrobat PDF open-in-new HTML
CAN & LIN transceivers & SBCs

TCAN4550-Q1Automotive system basis chip (SBC) with integrated CAN FD controller & transceiver

Data sheet document-pdfAcrobat PDF
Isolated amplifiers

AMC1302-Q1Automotive ±50-mV-input, high-precision, reinforced isolated amplifier for current sensing

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated amplifiers

AMC1311-Q1Automotive 2-V input, reinforced isolated amplifier with high CMTI for voltage sensing

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated gate drivers

UCC21530-Q1Automotive 5.7kVrms, 4A/6A dual-channel isolated gate driver w/ EN & DT pins in DWK pkg for I

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated gate drivers

UCC5870-Q1Automotive, 3.75kVrms 30A single-channel functional safety isolated gate driver for IGBT/SiC

Data sheet document-pdfAcrobat PDF
Low-side drivers

UCC27524A-Q1Automotive 5-A/5-A dual-channel gate driver with 5-V UVLO and negative input voltage handling

Data sheet document-pdfAcrobat PDF open-in-new HTML
Power op amps

ALM2402F-Q1High output current operational amplifier for automotive, dual channel

Data sheet document-pdfAcrobat PDF open-in-new HTML
Transformer drivers

SN6501-Q1Automotive low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide ASIL D Safety Concept-Assessed High-Speed Traction, Bi-directional DC/DC Convers May 05, 2021
Certificate TIDM-02009 EU Declaration of Conformity (DoC) Mar. 10, 2021

Related design resources

Hardware development

TMDSCNCD28388D F28388D controlCARD evaluation module

Software development

C2000WARE-DIGITALPOWER-SDK DigitalPower software development kit (SDK) for C2000™ MCUs

Reference designs

TIDA-01527 Discrete Resolver Front-End Reference Design With C2000™ Microcontroller and ±0.1° Accuracy

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