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NCP5422A Datasheet, PDF (1/18 Pages) ON Semiconductor – Dual Out-of-Phase Synchronous Buck Controller with Current Limit | |||
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NCP5422A
Dual OutâofâPhase
Synchronous
Buck Controller
with Current Limit
The NCP5422A is a dual Nâchannel 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 outâofâphase synchronization between the channels,
reducing the input filter requirement. The NCP5422A also provides
undervoltage lockout, Soft Start, built in adaptive nonâoverlap 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
⢠OutâOfâPhase Synchronization Between Channels
⢠Undervoltage Lockout
⢠Both Gate Drive Outputs Held Low During Fault Condition
http://onsemi.com
16
1
SOâ16
AD SUFFIX
CASE 751B
PIN CONNECTIONS AND
MARKING DIAGRAMS
SOâ16
1
GATE(H)1
16
GATE(H)2
GATE(L)1
GATE(L)2
GND
BST
IS+1
VCC
ROSC
IS+2
ISâ1
ISâ2
VFB1
COMP1
VFB2
COMP2
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
ORDERING INFORMATION
Device
Package
Shippingâ
NCP5422ADR2
SOâ16 2500 Tape & Reel
â For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2003
1
November, 2003 â Rev. 4
Publication Order Number:
NCP5422A/D
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