IR3580MTRPBF Description

A single-loop digital multi-phase buck controller called the IR3580 can manage up to 8 phases. The IR3580 adheres strictly to the requirements of Intel? VR12 and VR12.5 Rev 1.3 PWM.

To provide high efficiency at the lowest possible cost across the whole load range, the IR3580 incorporates IR's Efficiency Shaping Technology. Based on the actual load current, IR Variable Gate Drive adjusts the MOSFET gate drive voltage. Depending on the load current, IR's Dynamic Phase Control adds or drops phases. The IR3580 can be set up to switch into automatic or manual 1 or 2-phase operation, as well as active diode simulation mode. Output bulk capacitors are minimized by IR's proprietary non-linear digital PWM algorithms-based Adaptive Transient Algorithm (ATA).

IR3580MTRPBF Features

• Ultra Low Quiescent Power 8-phase single output PWM Controller

• Intel? VR12 and 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 Drive, Dynamic Phase Control and Automatic Power State Switching

• Programmable 1-phase or 2-phase operation for Light Loads and Active Diode Emulation for Very

• Light Loads

• IR Adaptive Transient Algorithm (ATA) minimizes output bulk capacitors and system cost

• Auto-Phase Detection with PID Coefficient autoscaling

• Fault Protection: OVP, UVP, OCP, OTP, CAT FLT

• I2C/SMBus/PMBus system interface for reporting of Temperature, Voltage, Current & Power

• telemetry for both loops

• Multiple Time Programming (MTP) with integrated charge pump for easy non-volatile programming

• Compatible with 3.3V tri-state drivers and IR ATL mode drivers

• +3.3V supply voltage; -40oC to 85oC ambient operation

• Pb-Free, RoHS, 6x6mm 48-pin, 0.4mm pitch QFN 

IR3580MTRPBF Applications

• Intel? VR12 and VR12.5-based systems

• Overclocked & Gaming platforms