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CS51313

Cherry Semiconductor Corporation
Part Number CS51313
Manufacturer Cherry Semiconductor Corporation
Description Synchronous CPU Buck Controller Capable of Implementing Multiple Linear Regulators
Published Mar 24, 2005
Detailed Description CS51313 CS51313 Synchronous CPU Buck Controller Capable of Implementing Multiple Linear Regulators Description The CS51...
Datasheet PDF File CS51313 PDF File

CS51313
CS51313

Overview
CS51313 CS51313 Synchronous CPU Buck Controller Capable of Implementing Multiple Linear Regulators Description The CS51313 is a synchronous dual NFET Buck Regulator Controller.
It is designed to power the core logic of the latest high performance CPUs.
It uses the V2TM control method to achieve the fastest possible transient response and best overall regulation.
It incorporates many additional features required to ensure the proper operation and protection of the CPU and Power system.
The CS51313 provides the industry’s most highly integrated solution, minimizing external component count, total solution size, and cost.
The CS51313 is specifically designed to power Intel’s Pentium® II processor and includes the following features: 5-bit DAC with 1.
2% tolerance, Power-Good output, overcurrent hiccup mode protection, over voltage protection, VCC monitor, Soft Start, adaptive voltage positioning and adaptive FET non-overlap time.
A precision reference trimmed to 1% is also externally available for use by other regulators.
The CS51313 will operate over an 8.
4V to 14V range and is available in 16 lead narrow body surface mount package.
Features s Synchronous Switching Regulator Controller for CPU VCORE s Dual N-Channel MOSFET Synchronous Buck Design s V2 TM Control Topology s 200ns Transient Loop Response s 5-bit DAC with 1.
2% Tolerance s Hiccup Mode Overcurrent Protection s 40ns Gate Rise and Fall Times (3.
3nF load) s 65ns Adaptive FET Non-overlap Time s Adaptive Voltage Positioning s Power-Good Output Monitors Regulator Output s VCC Monitor Provides Under Voltage Lockout s OVP Output Monitors Regulator Output s Enable Through use of the COMP pin Application Diagram +12V +3.
3V +3.
3V +5V 1200µF/10V 1200µF/10V 1µF 1200µF/10V x3 FS70VSJ-03 VID0 VID1 VID2 VID3 VID4 OVP VREF VCC GATEH GATEL VFB VOUT PWRGD COMP COFF 0.
1 µF FS70VSJ-03 1.
2µH 3.
3mΩ VCORE 2.
0V@19A 1200µF/10V x5 s +1.
23V Reference Voltage Available Externally 510Ω GND 0.
1µF 10K 510Ω Package Optio...


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