CS5421 Datasheet, PDF (1/14 Pages) ON Semiconductor – Dual Out−of−Phase Synchronous Buck Controller with Remote Sense

CS5421
Dual Out−of−Phase
Synchronous Buck
Controller with Remote
Sense
The CS5421 is a dual N−channel synchronous buck regulator
controller. It contains all the circuitry required for two independent
buck regulators and utilizes the V²â„¢ control method to achieve the
fastest possible transient response and best overall regulation, while
using the least number of external components. The CS5421 features
out−of−phase synchronization between the channels, reducing the
input filter requirement. The CS5421 also provides undervoltage
lockout, Soft Start, built in adaptive FET non−overlap and remote
sense capability. The part is available in a 16 Lead SO Narrow package
allowing the designer to minimize solution size.
Features
• V² Control Topology
• 150 ns Transient Response
• Programmable Soft Start
• 25 ns Gate Rise and Fall Times (with 1.0 nF load)
• 40 ns Adaptive FET Nonoverlap Time
• 100% Duty Cycle for Enhanced Transient Response
• Internal Slope Compensation
• 1.0 V 0.8% and 2.0% Error Amplifier References
• 150 kHz to 750 kHz Programmable Frequency Operation
• Switching Frequency Set by Single Resistor
• Out−Of−Phase Synchronization Between the Channels Reduces the
Input Filter Requirement
• Undervoltage Lockout
• On/Off Control Through Use of the COMP Pins
http://onsemi.com
SO−16
D SUFFIX
CASE 751B
PIN CONNECTIONS AND
MARKING DIAGRAM
1
GATE(H)1
GATE(L)1
PGND
LGND
SGND
V_FFB1
V_FB1
COMP1
16
GATE(H)2
GATE(L)2
PGND2
V_CC
R_OSC
V_FFB2
V_FB2
COMP2
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
CS5421GD16
CS5421GDR16
Package
Shipping
SO−16
48 Units/Rail
SO−16 2500 Tape & Reel
© Semiconductor Components Industries, LLC, 2006
1
July, 2006 − Rev. 10
Publication Order Number:
CS5421/D