FAN53180

www.fairchildsemi.com FAN53180 6-Bit VID Controlled 2-4 Phase DC-DC Controller www.datasheet4u.com Features Precision Multi-Phase DC-DC Core Voltage Regulation – ±14.5mV Output Voltage Accuracy Over Temperature Differential Remote Voltage Sensing Selectable 2, 3, or 4 Phase Operation Up to 1MHz per Phase Operation (4MHz ripple Frequency) Lossless Inductor Current Sensing for Loadline Compensation – External Temperature Compensation Accurate Load-Line Programming (Meets Intel VRM/ VRD10 CPU Specifications) Accurate Channel-Current Balancing for Thermal Optimization and Layout Compensation Convenient 12V Supply Biasing 6-bit Voltage Identification (VID) Input – 0.8375V to 1.600V in 12.5mV Steps – Dynamic VID Capability with Fault-Blanking for glitch-less Output voltage Changes Adjustable Over Current Protection with Programmable Latch-Off Delay Over-Voltage Protection — Internal OVP Crowbar Protection General Description The FAN53180 is a multi-phase DC-DC controller for implementing high-current, low-voltage, CPU core power regulation circuits. It is part of a chipset that includes external MOSFET drivers and power MOSFETS. The FAN53180 drives up to 4 synchronous-rectified buck channels in parallel. The multi-phase buck converter architecture uses interleaved switching to multiply ripple frequency by the number of phases and reduce input and output ripple currents. Lower ripple results in fewer components, lower component cost, reduced power dissipation, ...