CS5165

Features:

·V2™Control Topology
·Dual N Channel Design
·100ns Controller Transient Response
·Excess of 1Mhz Operation
·5 Bit DAC with 1% Tolerance
·Power Good Output With Internal Delay
·Enable Input Provides Micropower Shutdown Mode
·Complete Pentium® II System Requires 18 Components
·5V and 12V Operation
·Adaptive Voltage Positioning
·Remote Sense Capability
·Current Sharing Capability
·VCC Monitor
·Hiccup Mode Short Circuit Protection
·Overvoltage Protection (OVP)
·Programmable Soft Start
·150ns PWM Blanking
·65ns FET Non-Overlap
·40ns Gate Rise and Fall Times (3.3nF load)


Pinout




Specifications

Operating Junction Temperature, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to 150°C
Lead Temperature Soldering: Reflow (SMD styles only) . . . . . . . . . . 60 sec max. above 183°C, 230°C Peak
Storage Temperature Range, T_S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−65°C to 150°C
ESD Susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV


Description

The CS5165 synchronous 5-bit NFET buck controller is optimized to manage the power of the next generation Pentium®II processors. It's V2™control architecture delivers the fastest transient response (100ns), 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 CS5165 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% tolerance over temperature. Its on board programmable soft start insures a control start up, and the FET nonoverlap circuitry ensures that both FETs do not conduct simultaneously.

The on board oscillator can be programmed up to 1MHz to give the designer maximum flexibility in choosing external components and setting systems costs. The CS5165 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% duty cycle) until the fault is removed. With this method, the MOSFETs do not overheat or self destruct. The CS5165 is designed for use in both single processor desktop and multiprocessor workstation and server applications. The CS5165's current sharing capability allows the designer to build multiple parallel and redundant power solutions for multiprocessor systems.

The CS5165 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.