IR3581 Datasheet - International Rectifier

IR3581 Dual Output Digital Multi-Phase Controller

The IR3581 is a dual-loop digital multi-phase buck controller designed for CPU voltage regulation, and is fully compliant with Intel® VR12 and compliant with VR12.5 Rev 1.3 PWM specifications. The IR3581 includes IR’s Efficiency Shaping Technology to deliver exceptional efficiency at minimum cost ac.

IR3581 Features

* Ultra Low Quiescent Power Dual output 6+1 phase PWM Controller

* Intel® VR12, VR12.5 & Memory VR modes

* Overclocking & Gaming Modes

* PVI GPU VR mode

* Switching frequency from 194kHz to 2MHz per phase in 56 steps

* IR Efficiency Shaping Features including Variable Gate Dr

IR3581 Datasheet (251.57 KB)