PWM controllers meet Intel VR and AMD SVI specs

PWM controllers meet Intel VR and AMD SVI specs

The IR35xxA family of CHiL digital PWM controllers shrinks footprint and improves efficiency of server, desktop, and computing applications. The six devices meet Intel VR12 and VR12.5 and AMD SVI1 and SVI2 specifications, and support multiphase designs from 1 to 8 phases. The devices support phase doubling to drive two phases from each PWM output.

The PWM controllers offer efficiency shaping features such as phase shedding and variable gate drive with enhanced algorithms including PID scaling (when shedding phases) and phase current balancing. The controllers enable a 30% reduction in operating current. They support the di/dt transients from high-end processors, enabling transients to be met with fewer phases and capacitors. The devices also sense 12V, 5V and 3.3V supplies without special sequencing and feature PMBUS telemetry. The devices are provided in a 0.4mm pitch QFN package. (From $2.20 ea/1,000 to $3.58 ea/1,000 – available now.)

By Paul O’Shea

International Rectifier , El Segundo , CA
Sales 310-252-7105
www.irf.com