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