Description

The FAN5094 is a synchronous multi-phase DC-DC controller IC which provides a highly accurate, programmable output voltage for all high-performance processors. Two interleaved synchronous buck regulator phases with built-in current sharing operate 180° out of phase to provide the fast transient response needed to satisfy high current applications while minimizing external components. FAN5094s can be paralleled while maintaining both frequency and phase synchronization and ensuring current sharing in a high-power system.

Features

• Programmable output from 1.100V to 1.850V in 25mV steps using an integrated 5-bit DAC

• Two interleaved synchronous phases per IC for maximum performance

• Up to 4 phase power system

• Built-in current sharing between phases and between ICs

• Frequency and phase synchronization between ICs

• Remote sense and Programmable Active Droop™

• High precision voltage reference

• High speed transient response

• Programmable frequency from 200KHz to 2MHz

• Adaptive delay gate switching

• Integrated high-current gate drivers

• Integrated Power Good, OV, UV, Enable/Soft Start functions

• Drives N-channel MOSFETs

• Operation optimized for 12V operation

• High efficiency mode at light load

• Overcurrent protection using MOSFET sensing

• 28 pin TSSOP package

Applications

• Power supply for Pentium®IV

• Power supply for Athlon®

• Power supply for Ultrasparc™

• VRM for Pentium IV processor

• Programmable step-down power supply