IR PWM controllers deliver smallest footprint

International Rectifier, IR, has introduced its highly versatile family of CHiL digital PWM controllers that is designed to shrink footprint and improve efficiency in a variety of mid-range to high-end and extreme server, desktop, and computing applications.

IR's six new devices meet Intel VR12 and VR12.5 and AMD SVI1 and SVI2 specifications, and support multiphase designs from 1 to 8 phases operating 1 to 2 loops. 

These new third generation CHiL devices feature phase shedding and variable gate drive with enhanced algorithms, including PID scaling (when shedding phases) and phase current balancing to ensure maximum efficiency.  The architecture supports the high di/dt transients from high-end processors, and, as a result of a new Adaptive Transient Algorithm (ATA), the transients can be met with fewer phases and fewer capacitors to shrink system size.   

According to IR, the CHiL digital PWM controllers feature a 30 percent reduction in operating current to help meet higher efficiency goals during low-load operation. For protection of high-end circuits, the devices offer improved pulse-by-pulse current limit protection, controlled pulse width limiting a new phase imbalance/phase missing fault feature.  

Specifications

Pricing: Ranges from US $2.20 for the IR3570A to US $3.58 for the IR3563A in 1,000 unit quantities. Prices are subject to change.