EVQ4314-R-01A

The EVQ4314-R-01A is an evaluation board designed to demonstrate the capabilities of the MPQ4314, a synchronous, step-down switching regulator with a configurable frequency, as well as an integrated, internal high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET). It can provide up to 4A of highly efficient output current (I_OUT), with current mode control for fast loop response.

The wide 3.3V to 45V input voltage (V_IN) range accommodates a variety of step-down applications in automotive input environments. A 1.7μA quiescent current (I_Q) in shutdown mode 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.

Frequency foldback prevents inductor current 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 EVQ4314-R-01A is fully assembled and tested. The MPQ4314-AEC1 is available in a QFN-20 (4mmx4mm) wettable flank package, and is AEC-Q100 Grade 1 qualified.