The EVQ4331-J-1000-00A is an evaluation board designed to demonstrate the capabilities of the MPQ4331-1000-AEC1, a synchronous, step-down switching converter with an integrated, internal high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET).
The MPQ4331-1000-AEC1 provides 1A of highly efficient output current (IOUT) with peak current mode control. The wide 3V to 36V input voltage (VIN) range and 40V load dump tolerance accommodate a variety of step-down applications in automotive input environments. A 1μA shutdown-mode quiescent current 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 (fSW) under light-load conditions to reduce switching and gate driving losses.
An open-drain power good (PG) signal indicates whether the output voltage (VOUT) is within 95% to 105% of its nominal voltage.
Frequency foldback helps prevent inductor current (IL) 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 EVQ4331-J-1000-00A is fully assembled and tested. The MPQ4331-AEC1 is available in a space-saving TSOT23-8 package.
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