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NCP5424A

ON Semiconductor
Part Number NCP5424A
Manufacturer ON Semiconductor
Description Dual Synchronous Buck Controller
Published Jan 24, 2016
Detailed Description NCP5424A Dual Synchronous Buck Controller with Input Current Sharing The NCP5424A is a flexible dual N−channel synchron...
Datasheet PDF File NCP5424A PDF File

NCP5424A
NCP5424A

Overview
NCP5424A Dual Synchronous Buck Controller with Input Current Sharing The NCP5424A is a flexible dual N−channel synchronous buck controller utilizing V2™ control for fast transient response and excellent line and load regulation.
This highly versatile controller can be configured as a single two phase output converter that draws programmable amounts of current from two different input voltages or all current from one supply.
The NCP5424A can also be configured as two independent out−of−phase controllers.
Using the NCP5424A in a current sharing input configuration is ideal for applications where more power is required than is available from one supply, such as video cards or other plug−in boards.
When configured as a dual output controller, the output of one controller can be divided down and used as the reference for the second controller.
This tracking capability is useful in applications such as Double Data Rate (DDR) Memory power where the termination voltage must track VDD.
The NCP5424A provides a cycle−to−cycle current limit allowing the system to handle transient overcurrent events.
In addition, the NCP5424A provides Soft Start, undervoltage lockout, and built−in adaptive FET nonoverlap time to prevent shoot through.
Features • Cycle−to−Cycle Current Limit • 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 Applications • Video Graphics Card • DDR Memory • High Current (Two−Phase) Power Supplies • Dual Output DC−DC Converters http://onsemi.
com 16 1 SO−16 D SUFFIX CASE 751B PIN CONNECTIONS AND MARKING DIAGRAM 1 GATE(H)1 GATE(L)1 GND BST IS+1 IS− VFB1 COMP1 NCP5424A AWLYWW 16 GATE(H)2 GATE(L)2 VCC ROSC IS+2 VFB+2 VFB−2 COMP2 A = Assembly Location WL = Wafer Lot Y = Year WW = Work Week ORDERING INFORMATION Device NCP5424AD...


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