IRS2538DSPBF_15 Datasheet, PDF (1/14 Pages) International Rectifier – Magnetic Replacement Ballast IC

IRS2538DSPBF
Magnetic Replacement Ballast IC
Features
 ^{Ballast control plus half-bridge driver in one IC}
 ^{Single-stage topology (no PFC stage required)}
 ^{High PF and low THD}
 ^{Preheat, ignition and running lamp modes}
 ^{Closed-loop lamp current control}
 ^{Half-bridge NZVS protection}
 ^{Adaptive dead-time}
 ^{Lamp insert auto-restart}
 ^{Internal bootstrap MOSFET}
 ^{Micro-power start-up current}
 ^{15.6V internal zener clamp on VCC}
 Excellent ESD and latch immunity
 RoHS compliant
 8-pin SO8 package
Applications
 Magnetic replacement electronic ballast
 Low cost electronic ballast
Description
This IC takes full advantage of IR’s patented ballast
and high-voltage technologies to realize a simple, high-
performance magnetic ballast replacement solution.
The IC includes a novel single-stage circuit topology
and control method to achieve high power factor and
low THD without a PFC stage or any electrolytic
capacitors. A single high-voltage pin senses the half-
bridge voltage to perform necessary protection
functions. Closed-loop control of the lamp current
provides constant lamp brightness over a wide line input
voltage range. Combining these high-voltage control
algorithms in a single 8-pin IC results in a large
reduction in component count, an increase in
manufacturability and reliability, a reduced design cycle
time, while maintaining high ballast system
performance.
Package Options
Application Diagram
F1
L1
L
220VAC
LINE
INPUT
C1
BR1
N
CBUS
RVCC1
RVCC2
RLIM1
RLIM2
VCC
1
CVCC1
CVCC2
CFB
CVCO
COM
2
FB
3
VCO
4
RFB
8-Lead SOIC
VB
8
HO
7
VS
6
LO
5
RHO
CBS
RLO
MHS
MLS
RLMP1
LRES:A
CDC
CSNUB
DCP2
RLMP2
RVIGN1
RVIGN2
CRES
DIGN DZIGN
DCP1
RVIGN3
LRES:B
CH1
CH2
LRES:C
RCS
Ordering Information
Base Part Number
Package Type
IRS2538DSPBF
SO8N
Standard Pack
Form
Quantity
Tape and Reel
2500
1 www.irf.com © 2013 International Rectifier
Orderable Part Number
IRS2538DSTRPBF
Aug 16, 2013