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The IR35215 includes Infineon’s efficiency shaping technology to deliver exceptional efficiency at minimum cost across the entire load range. Infineon’s dynamic phase control adds/drops phases based upon load current. The IR35215 can be configured to enter 1 or 2-phase operation and active diode emulation mode automatically or by command.

The IR35215 offers digitally programmable load line thereby eliminating the need for any external load line setting component. The controller is designed to work with integrated and DCR current sense power stages and provides accurate input and output current reporting.

Summary of Features

Low quiescent power output PWM controller with dual loops and flexible phase allocation

Intel® VR13 rev 1.1 , VR12.5 rev1.5, VR12 rev 1.7, IMVP8 rev 1.2 and memory VR modes

Switching frequency from 200 kHz to 2 MHz per phase

Infineon efficiency shaping features including dynamic phase control and automatic power state switching

Programmable 1 or 2-phase operation for light loads and active diode emulation for very light loads

Digitally programmable load line - no external components are needed to set the load line

Infineon Adaptive Transient Algorithm (ATA) on both loops minimizes output bulk capacitors and system cost

Auto-phase detection with PID coefficient auto-scaling

Fault protection: OVP, UVP, OCP, OTP, CFP, cycle-by-cycle current limit

I2C/SMBus/PMBus system interface for reporting of temperature, voltage, current and power telemetry for both loops

Multiple Time Programming (MTP) with up to 27 writes for the USER section

Compatible with industry standard 3.3 V tri-state drivers

+3.3 V supply voltage; -40°C to 85°C ambient operation

Pb-Free, RoHS, 5x5 mm 40-pin, 0.4 mm pitch QFN

Potential Applications

Intel® VR13, VR12.5, VR12 and IMVP8 based systems

Servers and high end desktop CPU VRs

Memory VR