The MPQ70331FS-AEC1 is an ASIL-D compliant power management integrated circuit (PMIC) with advanced safety features for automotive applications. It consists of a high-voltage (HV) primary synchronous buck converter, a low-voltage (LV) secondary synchronous buck converter, and a synchronous boost converter with excellent transient response.

Voltage monitoring is implemented via a voltage supervisor to monitor the battery input voltage (V_IN), output rails, and two external channels, along with critical internal voltage signals, including the VCC voltage (V_CC) and bandgap reference. Clock monitoring, leakage monitoring, and thermal monitoring are also implemented.

Built-in self-testing (BIST) is included for critical analog and logic functions. A failsafe state machine manages fault handling and controls the safety outputs. An integrated, configurable watchdog can be configured in window and Q&A modes. The safety-related blocks have independent voltage regulators, bandgaps, and oscillators, which offer redundancy to achieve failsafe operation.

The serial peripheral interface (SPI) allows for flexibility through configurability. The one-time programmable (OTP) memory allows settings to be permanently stored. SPI transactions and the data in the registers and OTP are protected via cyclic redundancy check (CRC).

The MPQ70331FS-AEC1 is available in a TQFN-34 (6mmx6mm) package, and it is AEC-Q100 qualified.