5019MTC

www.fairchildsemi.com FAN5019 6-Bit VID Controller 2-4 Phase VRM10.X Controller Features Pin and Function Backward Compatible with FAN53168 and FAN53180 Controllers Precision Multi-Phase DC-DC Core Voltage Regulation – ±10mV Output Voltage Accuracy Over Temperature Differential Remote Voltage Sensing Selectable 2, 3, or 4 Phase Operation Selectable VRM9 or VRM10 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/VRD10.0 and 10.X CPU Specifications) Accurate Channel-Current Balancing for Thermal Optimization and Layout Compensation Convenient 12V Supply Biasing 6-bit Voltage Identification (VID) Input – .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. Latch-Off Function may be Disabled Over-Voltage Protection – Internal OVP Crowbar Protection General Description The FAN5019 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 FAN5019 drives up to four synchronous-rectified buck channels in parallel. The multi-phase buck converter architecture uses interleaved switching to multiply ripple frequency by the number of pha...