2021
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Make EVs more affordable with an integrated powertrain architecture. Simplify your design, reduce cost and improve reliability with the advantages of Texas Instruments (TI) technologies and expertise – which you can use to scale across your systems, from a distributed power architecture up to a single powertrain domain controller, power stage and mechanical enclosure. We can enable you to deliver 98% system efficiency and highest power density while streamlining your functional safety certifications.
Control of HEV/EV traction inverter and bi-directional DC-DC converter by a single TMS320F28388D real-time C2000™ MCU.
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
https://www.ti.com/tool/TIDM-02009
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