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CS5307
Four-Phase VRM 9.0 Buck Controller
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Multiphase controllers provide fast, accurate regulation with the
control features required to power the next generation of processors in
desktop, workstation and server applications. Combined with external
gate drivers and power components, the CS5307 implements a
compact, highly integrated buck converter. Enhanced V2 control
inherently compensates for variations in both line and load. Current
sharing between phases is achieved by Peak Current Sharing.
The CS5307 includes Power Good with a programmable lower
threshold.
Applications include Embedded Processor Power and low
voltage/high current power supplies.
Features Switching Regulator Controller Lossless Current Sensing Enhanced V2 Control Method Provides Excellent Regulation
and Fast Transient Response Programmable 200 to 800 kHz Switching Frequency (Per Phase) Duty Cycle – 0% to 100% Programmable Adaptive Voltage Positioning Reduces Output
Capacitor Requirements Programmable Soft Start Accurate Current Sharing Protection Features Pulse–by–Pulse Current Limit for Each Phase Programmable Hiccup Overcurrent Protection All “1” DAC Code Fault Processor Overvoltage Protection through Bottom MOSFETs Undervoltage Lockout System Power Management 5–Bit DAC With 1.0% Tolerance Compatible with VRM 9.0 Power Good Output Programmable Power Good Lower Threshold Guaranteed Startup at –20°C
