Programmable PMIC saves space in ADAS systems

May 14, 2019 //By Ally Winning
STMicroelectronics’ L5965 is a seven-output automotive power-management IC (PMIC) that enables compact and reliable ECUs for in-vehicle applications.
STMicroelectronics’ L5965 is a seven-output automotive power-management IC (PMIC) that enables compact and reliable ECUs for in-vehicle applications.

The device offers direct operation from battery voltage and has register-programmable output voltages and sequencing and integrated functional-safety mechanisms.

The seven regulated outputs allow the L5965 to power an entire camera- or radar-based driver-assistance system including sensors, memory ICs, processor, and CAN interface circuitry. The device is configured using one-time programmable (OTP) cells for setting the output voltages and sequencing.

The L5965’s ability to operate directly from the vehicle battery allows its use without a pre-regulator. Its register-programmable outputs also eliminate voltage-setting resistors, and the on-chip regulators can be used without external compensation circuitry. The PMIC solution reduces both footprint and BoM, while enhancing system reliability and accuracy.

Integrated functional-safety features are designed in compliance with ISO 26262 and enable systems to fulfil ASIL requirements up to ASIL-D. The mechanisms include a failure status pin, voltage monitors, ground-loss comparators, analogue and digital BIST, and temperature monitors.

More information

https://www.st.com/auto-pmic-L5965

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