MPQ70331FS-AEC1

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 (VIN), output rails, and two external channels, along with critical internal voltage signals, including the VCC voltage (VCC) 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.