Small-outline buck converter boosts efficiency and accuracy

ON Semiconductor has introduced a surface-mount DC/DC buck converter capable of operating from 5V-12V and producing a ±1% accurate output voltage as low as 0.8V.

With integrated high-side and low-side FETs displaying on-resistance of less than 10mΩ, the converter achieves better than 90% operating efficiency.

The NCP3102 can sustain 10A continuous output, allowing designers to achieve high power density, and integrates key features to further reduce overall system size and cost. These include an internal 275kHz oscillator and 0.8V precision voltage reference. There is also an externallycompensated transconductance error amplifier, for feedback and loop stabilisation.

In addition, programmable features enhance flexibility with minimum impact on footprint.

The programmable current limit for shortcircuit protection is adjusted by selecting external resistors, and the programmable soft-start characteristic is optimised by means of an external capacitor.

 

FEATURES 40-pin, 6mm x 6mm QFN package Boost pin operational to 25V Voltage-mode PWM control 80% maximum duty cycle Under-Voltage Lockout (UVLO) protection

APPLICATIONS Server systems Networking equipment Processor or FPGA power supplies Voltage regulator modules

 

 

Development board NCP3102BUCK1GEVB is available to members of the Future Board Club. To apply for the development board, and membership of the Board Club, go to www.my-boardclub.com/manf-offers.htm This offer is free and subject to qualification.

 

 

• Vishay’s OR-ing Power MOSFETs, page 080205
• Vishay’s FlipKY® Schottky diodes, page 080214
• Vishay Siliconix MOSFETs, page 080221

 

ON Semiconductor/NCP3102