SP6133 Datasheet, PDF (1/20 Pages) Sipex Corporation – Synchronous Buck Controller

Solved by
TM
Synchronous Buck Controller
SP6133
FEATURES
■ 5V to 24V Input step down converter
■ Up to 30A output capability
16 15 14 13
■ Highly integrated design, minimal components
■ UVLO Detects Both V_CC and V_IN
GL 1
■ Overcurrent circuit protection with auto-restart _PGND 2
■ Power Good Output, ENABLE Input
■ Maximum Controllable Duty Cycle Ratio up to 92% ^{GND 3}
■ Wide BW amp allows Type II or III compensation _VFB 4
■ Programmable Soft Start
SP6133
16 Pin QFN
3mm x 3mm
12 GH
11 _SWN
10 _ISP
9 _ISN
■ Fast Transient Response
■ High Efficiency: Greater than 95% possible
5678
■ Available in Lead Free, RoHS Compliant
16-Pin QFN package
■ External Driver Enable/Disable
■ U.S. Patent #6,922,041
DESCRIPTION
The SP6133 is a synchronous step-down switching regulator controller optimized for high
efficiency.The part is designed to be especially attractive for single supply step down con-
version from 5V to 24V. The SP6133 is designed to drive a pair of external NFETs using a
fixed 300 kHz frequency, PWM voltage mode architecture. Protection features include UVLO,
thermal shutdown, output short circuit protection, and overcurrent protection with auto restart.
The device also features a PWRGD output and an enable input. The SP6133 is available in
a space saving 16-pin QFN and offers excellent thermal performance.
C5
0.1uF
DBST
CVCC
10uF
BAT54WS
VIN
BST
VCC
GH
R3 10K
POWERGOOD _NC
ENABLE
PWRGD
SWN
UVIN
EN ^SP6133
GL
GND
TYPICAL APPLICATION CIRCUIT
VIN
CBST
0.1uF
MT, Si4394DY
9.75 mOhm, 30V
C1
22uF
C2
22uF 10-15V
GND
SC5018-2R7M
2.7uH, 15A, 4.1mOhm
MB, Si4320DY
4 mOhm, 30V
RS1
5.11K
RS2
5.11K
VOUT
C3
100uF
C4
100uF 3.3V
0-10A
CF1
22pF
CP1
39 pF
ISP
PGND
ISN
COMP
SS
VFB
CZ3
560pF
CZ2
1500pF
RZ2
23.2K
CSS
47nF
RZ3
1K
CSP
6.8nF
CS
0.1uF
R1
68.1K, 1%
R2
21.5K, 1%
GND
Oct 24-06 Rev L
Note: Die attach paddle is internally connected to GND.
SP6133 Synchronous Buck Controller

© 2006 Sipex Corporation