Wide VIN Supervised Multi-rail Power Supply with Low Voltage MCU Core Rail Reference Design


Design files


The TIDA-01369 reference design is a power supply designed for providing power to lock-step dual-core microcontrollers (MCUs) with functional safety architectures, regulating down from an automotive battery or industrial DC supply in a single stage. MCUs from multiple vendors are supported by the design. The core and I/O rails for the MCU are supervised; if a fault condition occurs, the MCU is disabled by hardware RESET output signals and the latching fault condition is reported to the MCU after normal operation is resumed. The reference design emphasizes the complementary features of three products from TI: the TPS653850-Q1 power management IC (PMIC), the TPS57160-Q1 asynchronous DC-DC buck converter, and the TPS3700-Q1 overvoltage and undervoltage supervisor.

  • Supports Power and Sequencing Requirements of Various Lock-Step Dual Core MCUs
  • Low-Voltage MCU Core Rail with 3% Voltage Ripple from 5-mA to 1.5-A Load
  • Optimized for Hercules TMS570xxxxx Product Family
  • Supervisor and Reset Signals for MCU with Latching Fault Condition
  • Operates over a Wide VIN from 2.6V to 36V (Ideal for Automotive Battery or Industrial Supplies)
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Important note

For more information on the TI Design TIDA-01369: Request now

Design files & products


Includes TI products in the design and potential alternatives.

Multi-channel ICs (PMICs)

TPS653853-Q1Multi-rail power supply for microcontrollers in safety-relevant applications

Data sheet: PDF
AC/DC & DC/DC converters (integrated FET)

TPS57160-Q1Automotive 3.5V to 60V, 1.5A Buck Converter with Eco-Mode™

Data sheet: PDF | HTML
Supervisor & reset ICs

TPS3700-Q1Automotive high-voltage (18-V) window voltage detector for overvoltage and undervoltage monitoring

Data sheet: PDF | HTML

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