The NCP81141 Single?Phase buck solution is optimized for Intel

VR12.6 compatible CPUs. The controller combines true differential

voltage sensing, differential inductor DCR current sensing, input

voltage feed?forward, and adaptive voltage positioning to provide

accurately regulated power for both Desktop and Notebook

applications. The single phase controller uses DCR current sensing

providing the fastest initial response to dynamic load events at reduced

system cost.

The NCP81141 incorporates an internal MOSFET driver for

improved system efficiency. High performance operational error

amplifiers are provided to simplify compensation of the system.

Patented Dynamic Reference Injection further simplifies loop

compensation by eliminating the need to compromise between

closed?loop transient response and Dynamic VID performance.

Patented Total Current Summing provides highly accurate digital

current monitoring.

特性 Features

? Meets Intel? VR12.6 Specifications

? High Performance Operational Error Amplifier

? Digital Soft Start Ramp

? Dynamic Reference Injection

? “Lossless” DCR Current Sensing

? Adaptive Voltage Positioning (AVP)

? Switching Frequency Range of 250 kHz – 1 MHz

? VIN Range 4.5 V ? 25 V

? Startup into Pre?Charged Load While Avoiding False OVP

? Vin Feed Forward Ramp Slope

? Over Voltage Protection (OVP) and Under Voltage Protection (UVP)

? Over Current Protection (OCP)

? VR?RDY Output with Internal Delays

? These Devices are Pb?Free and are RoHS Compliant

Applications

? Desktop and Notebook Processors