The NCP6132 dual output three plus two phase buck solution is

optimized for Intel IMVP-7 and VR12 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 control system is based

on Dual-Edge pulse-width modulation (PWM) combined with DCR

current sensing providing the fastest initial response to dynamic load

events and reduced system cost. It also sheds to single phase during

light load operation and can auto frequency scale in light load while

maintaining excellent transient performance.

Features

• Meets Intel’s VR12/IMVP7 Specifications

• Three phase CPU voltage regulator with two internal MOSFET

drivers and one external MOSFET driver

• Two phase Auxiliary voltage regulator with one internal MOSFET

driver and external MOSFET driver

• Current Mode Dual Edge Modulation for Fastest Initial Response to

Transient Loading

• Dual High Performance Operational Error Amplifier

• One Digital Soft Start Ramp for Both Rails

• Dynamic Reference Injection

• Accurate Total Summing Current Amplifier

• DAC with Droop Feed-forward Injection(Patent Pending)

• Dual High Impedance Differential Voltage and Total Current Sense

Amplifiers

• Phase-to-Phase Dynamic Current Balancing

• “Lossless” DCR Current Sensing for Current Balancing

• Summed Thermally Compensated Inductor Current Sensing for

Droop

• True Differential Current Balancing Sense Amplifiers for Each Phase

• Adaptive Voltage Positioning (AVP)

• Switching Frequency Range of 200 kHz – 1.0 MHz

• Startup into Pre-Charged Loads While Avoiding False

OVP

• Power Saving Phase Shedding

• Vin Feed Forward Ramp Slope

• Pin Programming for Internal SVID parameters

• Over Voltage Protection (OVP) & Under Voltage

Protection (UVP)

• Over Current Protection (OCP)

• Dual Power Good Output with Internal Delays

• These Devices are Pb-Free and are RoHS Compliant

Applications

• Desktop & Notebook Processors