The EVQ4334J-RH-4000-00A is an evaluation board designed to demonstrate the capabilities of the MPQ4334JGRHE-4000-AEC1 and the MP4334JGRHE-4000, a configurable-frequency (200kHz to 2.5MHz), synchronous, step-down switching converter with integrated, internal high-side and low-side MOSFETs (HS-FET and LS-FET, respectively).

The MPQ4334JGRHE-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 accommodate 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 EVQ4334J-RH-4000-00A is a fully assembled and tested evaluation board. The MPQ4334JGRHE-4000-AEC1 and MP4334JGRHE-4000 are each available in a QFN-15 (2.5mmx3.5mm) package with wettable flanks. The MPQ4334JGRHE-4000-AEC1 is AEC-Q100 qualified.

Contact MPS regarding device availability for the MP4334JGRHE-4000.