SP6132HV Datasheet, PDF (1/14 Pages) Sipex Corporation – High Voltage Synchronous Buck Controller

®
SP6132H
High Voltage Synchronous Buck Controller
FEATURES
■ 3V to 28V Step Down Achieved Using Dual Input
■ 2A to 15A Ouput Capability
■ Highly Integrated Design, Minimal Components
■ UVLO Detects Both V_CC and V_IN
■ Short Circuit Protection with Auto-Restart
■ On-Board 1.5Ω sink (2Ω source) NFET Drivers
■ Wide BW Amp Allows Type II or III Compensation
■ Programmable Soft Start
■ Fast Transient Response
■ High Efficiency: Greater than 95% Possible
■ A Synchronous Start-Up into a Pre-Charged Output
■ Small 10-Pin MSOP Package
V_CC 1
GL 2
GND 3
V_FB 4
COMP 5
SP6132H
10 Pin MSOP
10 BST
9 _GH
8 _SWN
7 _SS
6 _UVIN
Now Available in Lead Free Packaging
DESCRIPTION
The SP6132H is a synchronous step-down switching regulator controller optimized for high efficiency. The part is
designed to be especially attractive for dual supply, 12V step down with 5V used to power the controller. This lower V_CC
voltage minimizes power dissipation in the part. The SP6132H is designed to drive a pair of external NFETs using a
fixed 300kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and
output short circuit protection. The SP6132H is available in the cost and space saving 10-pin MSOP.
TYPICAL APPLICATION CIRCUIT
4
V_CC
221k, 1%
MBR0530
10µF
SP6132H
1µF
VCC
BST
GL
GH
GND
SWN
5.11, 1%
4
VFB
SS
COMP UVIN
47nF
100k, 1%
0.1µF
100pF
1500pF 27.4k, 1%
22pF
FDS7088N3
22µF
22µF
VIN
3.0 - 28V
GND
2.7µH @ 12A
FDS7088N3
47µF
2.5V
10 A
V_OUT
4.64k, 1%
47µF
220pF
68.1k, 1%
31.6k, 1%
Date: 5/5/04
SP6132H Dual Supply, Synchronous Buck Controller
1
© Copyright 2004 Sipex Corporation