Dual Out−of−Phase Synchronous Buck Controller with Current Limit

The CS5422 is a dual N−channel synchronous buck regulator controller. It contains all the circuitry required for two independent buck regulators and utilizes the V2™ control method to achieve the fastest possible transient response and best overall regulation, while using the least number of external components. The CS5422 features out−of−phase synchronization between the channels, reducing the input filter requirement.

Features

• V2 Control Topology

• Hiccup Mode Overcurrent Protection

• 150 ns Transient Response

• Programmable Soft Start

• 100% Duty Cycle for Enhanced Transient Response

• 150 kHz to 600 kHz Programmable Frequency Operation

• Switching Frequency Set by Single Resistor

• Out−Of−Phase Synchronization Between the Channels Reduces the Input Filter Requirement

• Undervoltage Lockout

• Internally Fused Leads available in 24 Lead SO Wide Package