Power Electronics

Multiphase CPU Controllers

ON Semiconductor’s new family of multiphase controllers meets the stringent requirements of VR10.x computing power demands. The new NCP5314 2-/ 3-/ 4-phase controller is ideal for high-performance CPUs requiring up to 120An and the NCP5316 4-/5-/6-phase controller offers an easy upgrade path for next-generation CPUs requiring up to 200A.

The onboard 6-bit digital-to-analog converter (DAC) provides a voltage output of 0.83V to 1.6 V, with a tolerance of ±0.5% over the full temperature range and input range. The NCP531x features differential current sense inputs for each phase to help insure signal integrity and noise immunity in the challenged PC layouts. It also features inductor current sensing that provides an accurate, loss-less current sense scheme. In addition to providing two extra phases, the NCP5316 features per phase current limit and pins that provide a signal scaled to both the total inductor current and the per phase current.

For more information, visit www.onsemi.com.

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