11 System Engineering and Reference Designs

TI’s system engineering teams are dedicated to develop optimized system designs from TI’s broad product portfolio, thereby helping customers to accelerate their system design cycle. Some previously-developed reference designs are detailed the following list:

• TIDM-02009:

  The TIDM-02009 is an ASIL D safety concept-assessed, high-speed traction, bidirectional DC/DC conversion reference design.

  This reference design demonstrates control of the HEV or EV traction inverter and bidirectional DC-DC converter with 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) techniques with a phase-shifted full-bridge (PSFB) topology and synchronous rectification (SR) scheme. The traction inverter stage uses a silicon carbide (SiC) power stage, driven by the UCC5870-Q1 smart gate device. A PCMC waveform is generated using the 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 was assessed with TÜV SÜD to demonstrate system-level safety integrity up to ISO 26262 ASIL D for representative safety goals.

• PMP22817:

  The PMP22817 is an automotive SPI-programmable gate driver and bias supply with integrated transformer reference design.

  This reference design provides isolated-bias supply and isolated-gate driver for power switches in traction inverters. Both the bias power and driver provide the high isolation needed for 800-VDC bus application. The isolated bias provides 24 VDC both the +15-V and –5-V gate-drive biases. The isolated driver provides the high currents needed to rapidly turn on and off these high-power switches and offers advanced protection features. The PMP22817 design also provides a tested DC-DC single-ended primary-inductor converter SEPIC off automotive battery voltage (6 V to 42 V including surge and dips) to provide the regulated 24 V.

• TIDA-01527

  The TIDA-01527 is a discrete resolver front-end reference design with a C2000™ microcontroller and ±0.1° accuracy.

  This reference design is an excitation amplifier and analog front end for resolver sensors. The design implements only discrete components and standard operational amplifiers on a 1-in-2 printed circuit board (PCB). The provided algorithm and code example uses a C2000 microcontroller (MCU) LaunchPad™ Development Kit with the TMS320F28069M MCU for signal processing and angle calculation. The reference design uses a remarkable, scattered-signal processing method. This method improves the system accuracy by 250% while maintaining hardware costs and complexity to a reasonable level.