The EVQ4334-D-4000-00A is an evaluation board designed to demonstrate the capabilities of the MPQ4334GDE-4000-AEC1, a configurable-frequency (200kHz to 2.5MHz), synchronous, step-down switching converter with an integrated, internal high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET).

The MPQ4334GDE-4000-AEC1 provides up to 4A of highly efficient output current (I_OUT) with peak current mode control. The wide 3V to 36V input voltage (V_IN) range and 40V load dump tolerance accommodates a variety of step-down applications in automotive input environments.

A 0.5μA shutdown mode quiescent current (I_Q) allows the device to be used in battery-powered applications. High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency (f_SW) under light-load conditions to reduce switching and gate driver losses.

An open-drain power good (PG) signal indicates whether the output voltage (V_OUT) is within 94.5% to 105.5% of its nominal voltage. Frequency foldback helps prevent inductor current (I_L) runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation.

A high duty cycle and low-dropout (LDO) mode are provided for automotive cold-crank conditions.

The EVQ4334-D-4000-00A is a fully assembled and tested evaluation board. The MPQ4334GDE-4000-AEC1 is available in a QFN-12 (2mmx3mm) package with wettable flanks, and it is AEC-Q100 qualified.