IR3086A Datasheet | International Rectifier

DATA SHEET XPHASETM PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT DESCRIPTION The IR3086A Phase IC bined with an IR XPhase TM Control IC provides a full featured and flexible way to implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC provides overall system control and interfaces with any number of “Phase” ICs which each drive and monitor a single phase of a multiphase converter. The XPhase TM architecture results in a power supply that is smaller, less expensive, and easier to design while providing higher efficiency than conventional approaches. .. Features - - - - - - - - - - - - - 2.5A Average Gate Drive Current Loss-Less Inductor Current Sense Internal Inductor DCR Temperature pensation Programmable Phase Delay Programmable Feed-Forward Voltage Mode PWM Ramp Sub 100ns Minimum Pulse Width supports 1MHz per-phase operation Current Sense Amplifier drives a single wire Average Current Share Bus Current Share Amplifier reduces PWM Ramp slope to ensure sharing between phases Body Braking TM disables Synchronous MOSFET for improved transient response and prevents negative output voltage at converter turn-off OVP parator with 150ns response Phase Fault Detection Programmable Phase Over-Temperature Detection Small thermally enhanced 20L MLPQ package APPLICATION CIRCUIT VGATE 12V PHASE FAULT VRHOT DAC RBIASIN 20k 19 18 17 20 RCSCCS+ CCSRCS+ BIAS RPHASE1 DBST BIASIN DACIN PHSFLT CSIN+ CSIN- CBST CIN 5 Wire Analog Bus From Control IC RMPIN+ RMPINHOTSET VRHOT ISHARE SP EAIN VCCH 15 14 13 12 11 L RAMP 2 3...