The STPM801-TR from STMicroelectronics is an Automotive Qualified Hot-Swap and Ideal Diode Controller IC that has been designed to enable high redundancy power architectures. It requires an input voltage of 4 - 65 V. This power management IC (PMIC) consists of two pre-driver push-pull stages (one soft-start and one OR-ing stage), voltage comparators, internal/external power MOSFETs, control logic and diagnostics, charge pump stage, and passive components. It utilizes the hot-swap MOSFET as a normal power switch, which enables the soft-start function to limit the in-rush current during the device power-up, and uses the OR-ing MOSFET as an ideal diode to block the current conduction in the case of reverse battery detection. This PMIC controls the voltage drop across an external N-channel MOSFET to protect loads from high voltage transients, limit, and regulate the output under over-voltage conditions. It also minimizes reverse current transients during power source failure events.

This AEC-Q100-qualified PMIC offers a set of features to support applications that need to fulfil functional safety requirements as defined by automotive safety integrity level (ASIL)-A-B-C-D, depending on the application TSR. It also complies with the 16750 AC ripple test requirements (50 Hz – 25 kHz). This diode controller monitors the power supply terminal to prevent under-voltage lockout (UVLO) and over-voltage-related damages. It is available in a surface-mount package that measures 5 x 5 mm.