NCP5422A Dual Out-of-Phase Synchronous Buck Controller
with Current Limit
The NCP5422A 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 NCP5422A
features out-of-phase synchronization between the channels,
reducing the input filter requirement. The NCP5422A also provides
undervoltage lockout, Soft-Start, built in adaptive non-overlap time
and hiccup mode overcurrent protection.
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 Channels
?Undervoltage Lockout
?Both Gate Drive Outputs Held Low During Fault Condition
?Pb-Free Packages are Available