IR3536

IR3536/38 Digital Multi-Phase Buck Controller CHL8326/28 FEATURES DESCRIPTION  6-phase & 8-phase dual output PWM Controller  Phases are flexibly assigned between Loops 1 & 2  Intel® VR12, AMD® 3.4MHz SVI/PVI & Memory modes  Overclocking & Gaming Mode with Vmax setting  Switching frequency from 200kHz to 1.2MHz per phase  IR Efficiency Shaping Features including Variable Gate Drive and Dynamic Phase Control  Programmable 1-phase or 2-phase 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 auto-compensation  Per-Loop Fault Protection: OVP, UVP, OCP, OTP, CFP  I2C/SMBus/PMBus system interface for telemetry of Temperature, Voltage, Current & Power for both loops  Non-Volatile Memory (NVM) for custom configuration  Compatible with IR ATL and 3.3V Tri-state Drivers  +3.3V supply voltage; -20ºC to 85ºC ambient operation  Pb-Free, RoHS, 7x7 48-pin & 8x8 56-pin QFN, MSL2 package APPLICATIONS  Intel ® VR12 & AMD® SVI & PVI based systems  DDR Memory with Vtt tracking  Overclocked & Gaming platforms PIN DIAGRAM The IR3536/CHL8326 and IR3538/CHL8328 are dual-loop digital multi-phase buck controllers. The IR3536/CHL8326 drive up to 6 phases and the IR3538/CHL8328 drives up to 8 phases. The IR3536/CHL8326 and IR3538/CHL8328 are fully Intel® VR12 and AMD® SVI/PVI compliant on both loops and provide a Vtt tracking function for DDR...