MPQ8878-AEC1

The MPQ8878-AEC1 is a 36V, monolithic, synchronous buck-boost DC/DC converter. The wide 2.9V to 36V input voltage (V_IN) range makes this device well-suited for multi-purpose automotive and industrial applications. Proprietary Zero-Delay PWM^TM (ZDP^TM) control and the device's fully integrated, four-switch configuration allow the chip to flexibly change the converter topology between buck, boost, and buck-boost modes. This optimizes performance and efficiency with input votlages that are above, below, or equal to the output voltage (V_OUT). It also ensures seamless transitions between the adjacent operational regions.

The MPQ8878-AEC1 can be configured via a standard I²C interface, and UART versions are also available. The parameters can be adjusted by writing settings to the device without any hardware changes required.

The switching frequency (f_SW) can be configured to 200kHz, 400kHz, 470kHz, 2200kHz, or it can be synchronized between 250kHz and 2.2MHz via an external clock signal. In addition, the configurable frequency spread spectrum (FSS) function can dither the f_SW periodically for improved EMI performance.

Robust fault protections include input under-voltage lockout (UVLO), input over-voltage protection (OVP), cycle-by-cycle peak current limiting, output OVP, output short-circuit protection (SCP), and thermal shutdown. The built-in power good (PG) function can indicate whether V_OUT is regulated properly.

The MPQ8878-AEC1 is available in a thermally enhanced TQFN-23 (4mmx5mm) package, and is available in AEC-Q100 Grade 1.