NCP81105 Datasheet - ON Semiconductor

NCP81105 1/2/3 Phase Power Controller

Pin No. Symbol Description 1 EN Logic input. Logic high enables the NCP81105 and logic low disables it. 2 VCC Power for the internal control circuits. A decoupling capacitor must be connected from this pin to ground. 3 VR_HOT# Open drain (logic level) output for over *temperature rep.

NCP81105, NCP81105H DrMOS Supporting, 1/2/3 Phase Power Controller with SVID Interface for Desktop and Notebook VR12.5 & VR12.6 CPU Applications The NCP81105 is a DrMOS supporting controller optimized for Intel® VR12.5 & 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 CPU application.

NCP81105 Features

* Meets Intel’s VR12.5 Specifications

* Implements VR12.6 PS4 State and SVID Reporting

* Mixed Voltage/Current Mode, Dual Edge Modulation for Fastest Initial Response to Transient Loading

* High Impedance Differential Voltage Amplifier

* High Performance Opera

NCP81105-ONSemiconductor.pdf