Description

The CS51312 is a synchronous dual NFET Buck Regulator Controller. It is designed to power the core logic of the latest high performance CPUs and ASICs from a single 12V input. 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 CS51312 provides the industry’s most highly integrated solution, minimizing external component count, total solution size, and cost.

Features

■ Synchronous Switching Regulator Controller for CPU VCORE

■ Dual N-Channel MOSFET Synchronous Buck Design

■ V2TM Control Topology

■ 200ns Transient Loop Response

■ 5 bit DAC with 1.2 Tolerance

■ Hiccup Mode Overcurrent Protection

■ 40ns Gate Rise and Fall Times (3.3nF load)

■ 65ns Adaptive FET Non-overlap Time

■ Adaptive Voltage Positioning

■ Power-Good Output Monitors Regulator Output

■ 5V/12V or 12V-only Operation

■ VCC Monitor Provides Under Voltage Lockout

■ OVP Output Monitors Regulator Output

■ Multifunction COMP Pin Provides ENABLE, Soft Start, and Hiccup Timing in Addition to Control Loop Compensation