NCP3235GEVB: High Current Synchronous Buck Converter

The NCP3235GEVB Evaluation Board is a high current, high efficiency voltage mode synchronous buck converter which operates from 4.5 V to 23 V input and generates output voltages down to 0.6 V at up to 15 A continuous current. It has two operation modes: FCCM and automatic CCM/DCM. In automatic CCM/DCM mode, the controller can switch smoothly between CCM and DCM, where converter runs at reduced switching frequency to achieve much higher efficiency at light load. The NCP3235GEVB Evaluation Board is available in 6 mm x 6 mm QFN−40 pin package.
Features and Applications


Features
Wide operating range 4.5 V to 21 V
Thermally enhanced QFN package
550kHz/1.1MHz switching frequency
Ultra-sonic mode
Accurate 0.6 V reference
DCM/CCM selectable options
Adjustable soft start



Benefits

Allows for use across multiple applications

Higher dissipation with 3 exposed pads

Design flexibility to select higher efficiency or smaller output filter

Keeps capacitors from making audio sounds

Adjustable output to set desired voltage as low as 0.6 V

Operate in discontinuous mode for higher efficiency at light loads

Allows smooth ramp up during power up



Applications
FGPA, ASIC, DSP power
Datacom/Networking
Computing/Servers
12 V Point of load