FAN5098 Overview
The FAN5098 is a synchronous two-phase DC-DC controller IC which provides a highly accurate, programmable output voltage for the AMD® Hammer™ processor. 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 ponents.
FAN5098 Key Features
- Programmable output from 800mV to 1.550V in 25mV steps using an integrated 5-bit DAC
- Two interleaved synchronous phases for maximum performance
- 100nsec transient response time
- Built-in current sharing between phases
- Remote sense
- Programmable Active Droop (Voltage Positioning)
- Programmable switching frequency from 100KHz to 1MHz per phase
- Adaptive delay gate switching
- Integrated high-current gate drivers
- Integrated Power Good, OV, UV, Enable/Soft Start functions
FAN5098 Applications
- VRM/VRD for 64-Bit Athlon™ and Opteron™ CPU’s
- VRM/VRD for Advanced CPU’s