ON Semi Intros NCP5314/NCP5316 CPU Controllers

ON Semiconductor Corp. (Phoenix, AZ) announced a new family of multiphase controllers that meet the requirements of VR10.x computing power demands. The new NCP5314 two-, three-, and four-phase controller is suitable for high-performance CPUs requiring up to 120A, and the NCP5316 four-, five-, and six-phase controller offers an easy upgrade path for next-generation CPUs requiring up to 200A.

The onboard, six-bit, digital-to-analog converter provides a voltage output of 0.83V to 1.6V, with a tolerance of ±0.5% over the full temperature range and input range. The NCP531x devices feature differential current-sense inputs for each phase to help ensure signal integrity and noise immunity in the challenged PC layouts. They also feature 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.

The NCP5314 is offered in a 32-pin QFN and a 32-pin LQFP. The device is priced at $1.13 per unit in 10,000-unit quantities. The NCP5316 is offered in a 48-pin QFN and a 48-pin LQFP priced at $1.18 per unit in 10,000-unit quantities.