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CS5165A

ON Semiconductor
Part Number CS5165A
Manufacturer ON Semiconductor
Description 5-Bit Synchronous CPU Buck Controller
Published Jan 12, 2007
Detailed Description CS5165A 5−Bit Synchronous CPU Buck Controller The CS5165A synchronous 5−bit NFET buck controller is optimized to manage...
Datasheet PDF File CS5165A PDF File

CS5165A
CS5165A

Overview
CS5165A 5−Bit Synchronous CPU Buck Controller The CS5165A synchronous 5−bit NFET buck controller is optimized to manage the power of the next generation Pentium II processors.
It’s V2t control architecture delivers the fastest transient response (100 ns), and best overall voltage regulation in the industry today.
It’s feature rich design gives end users the maximum flexibility to implement the best price/performance solutions for their end products.
The CS5165A has been carefully crafted to maximize performance and protect the processor during operation.
It has a 5−bit DAC on board that holds a ±1.
0% tolerance over temperature.
Its on board programmable Soft−Start insures a control startup, and the FET nonoverlap circuitry ensures that both FETs do not conduct simultaneously.
The on board oscillator can be programmed up to 1.
0 MHz to give the designer maximum flexibility in choosing external components and setting systems costs.
The CS5165A protects the processor during potentially catastrophic events like overvoltage (OVP) and short circuit.
The OVP feature is part of the V2 architecture and does not require any additional components.
During short circuit, the controller pulses the MOSFETs in a “hiccup” mode (3.
0% duty cycle) until the fault is removed.
With this method, the MOSFETs do not overheat or self destruct.
The CS5165A is designed for use in both single processor desktop and multiprocessor workstation and server applications.
The CS5165A’s current sharing capability allows the designer to build multiple parallel and redundant power solutions for multiprocessor systems.
The CS5165A contains other control and protection features such as Power Good, ENABLE, and adaptive voltage positioning.
It is available in a 16 lead SOIC wide body package.
Features • V2 Control Topology • Dual N−Channel Design • 100 ns Controller Transient Response • Excess of 1.
0 MHz Operation • 5−Bit DAC with 1.
0% Tolerance • Power Good Output With Internal Delay • Enable Input Provides...


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