The EVQ70331FS-QK-00A is an evaluation board designed to demonstrate the capabilities of the MPQ70331FS-AEC1, an ASIL-D compliant power management IC (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, which monitors the battery input voltage (V_IN), output rails, two external channels, and 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 both window and Q&A mode. The safety-related blocks have independent voltage regulators, bandgaps, and oscillators, which offer redundancy to achieve failsafe operation.

The serial peripheral interface (SPI) provides flexibility through configurability. The one-time programmable (OTP) memory permanently stores settings. SPI transactions, as well as the data in the registers and OTP, are protected via cyclic redundancy check (CRC).

The EVQ70331FS-QK-00A is a fully assembled and tested evaluation board. The MPQ70331FS-AEC1 is available in a TQFN-34 (6mmx6mm) package with wettable flanks, and it is AEC-Q100 qualified.