The Infineon IR35201 is a dual-loop digital multi-phase buck controller designed for CPU voltage regulation, and is fully compliant with Intel®, VR12 Rev 1.7, VR12.5 Rev 1.5, IMVP8 2 Rev 1.2, and AMD SVI2 REV 1.06 specifications

IR Efficiency Shaping Features including 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) on both loops
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