www.irf.com
?2011 International Rectifier
September 29, 2011
IRS2548D
SMPS/LED DRIVER PFC + HALF-BRIDGE CONTROL IC
Features
" PFC, system control and half-bridge driver in
one IC
" Critical-conduction mode boost-type PFC
" Programmable PFC over-current protection
" Half Bridge Driver
" Half Bridge Over Current Protection
" Variable Frequency Oscillator
" Fixed internal 1.6us HO and LO deadtime
" Internal bootstrap MOSFET
" Internal 15.6V zener clamp diode on Vcc
" Micropower startup (250礎)
" Latch immunity and ESD protection
Typical Applications
" Isolated LED Drivers
" Power Supplies
Product Summary
Topology
Half Bridge
V
OFFSET
600V
V
OUT
VCC
I
o+
& I
o-
(typical)
500mA/500mA
t
ON
& t
OFF
(typical)
120nS/50nS
Deadtime (typical)
1.6uS
Package
14-Lead SOIC
Typical Connection Diagram
RVBUS1
RLO
+
RVBUS2
C1
L
N
RV1
F1
CVS
DCP2
DCP1
CCOMP
COC
ROC
MPFC
CVBUS2
CVBUS1
RPFC
RZX
CVBUS
RVBUS
RFMIN
RVCC
CCS
R
CS
RF1
RLM1
RLM2
RHO
MHS
MLS
CBS
CVCC1
CVCC
+
+
BR1
C2
L1
CY
GND
DPFC
LPFC
RFMAX
CRES
DOUT1
DOUT2
COUT
RPU
R
CL
CVS
Reg
+5V
LED+
LED-
RD1
RD2
RD3
RV1
RV2
CF1
CF2
2
ENN
1
2
3
VBUS
4
5
7
FMIN
6
7
8
13
12
11
10
9
14
OC
COMP
ZX
PFC
HO
VS
VB
VCC
COM
LO
CS
ROC
DO1
DO2
U1
U2A
U2B
U3
RF2
RMAX
CMAX