IRS2548D Datasheet, PDF (1/22 Pages) International Rectifier – SMPS/LED DRIVER PFC + HALF-BRIDGE CONTROL IC

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 (250µA)
• Latch immunity and ESD protection
Typical Applications
• Isolated LED Drivers
• Power Supplies
Product Summary
Topology
V_OFFSET
V_OUT
I_o+ & I _o- (typical)
t_ON & t_OFF (typical)
Deadtime (typical)
Package
Half Bridge
600V
VCC
500mA/500mA
120nS/50nS
1.6uS
14-Lead SOIC
Typical Connection Diagram
L ^F1
N
GND
RV1
C1
L1
BR1
CY
LP FC
D P FC
CVBUS1 ⁺
C2
MPFC
CVBUS2 +
RO C
RPU
RMAX
RFMAX
RVBUS1
RVCC
RVBUS2
CVBUS
U1
V BUS
HO
1
14
RHO
MHS
RVB US
RFMIN
CCO MP
RZX
FMIN
2
COMP
3
ZX
4
RP FC
ROC
PFC
5
OC
76
ENN
7
VS
13
VB
12
VCC
11
COM
10
LO
9
CS
8
CBS
RLM2
RLM1
+
CVCC2 CVCC1
RLO
RF1
CVS
DCP2
MLS
DCP 1
CRES
CMAX
COC
CCS
R_CS
DOUT1
U3
Reg
+5V
CVS
LED+
RV1
DOUT2
COUT
RD1
U2A CF1
RD2
CF2 RF2
U2B
RD3
LED-
RV2
R _CL
DO1
DO2
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