International Rectifier has introduced its highly versatile family of CHiL digital PWM controllers designed to shrink footprint and improve efficiency in a variety of mid-range to high-end applications. The six new devices meet Intel VR12 and VR12.5 and AMD SVI1 and SVI2 specifications, and support multiphase designs from 1to 8 phases operating one to two loops. They 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 solution architecture supports the extremely high di/dt transients from high-end processors, and, as a result of a new adaptive transient algorithm, the transients can be met with fewer phases and fewer capacitors to shrink system size.
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