Datasheet No – PD97382
September 26, 2011
IR1168S
DUAL SMART RECTIFIER DRIVER IC
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
Secondary-side
high
speed
controller
for
synchronous rectification in resonant half bridge
topologies
200V proprietary IC technology
Max 500KHz switching frequency
Anti-bounce logic and UVLO protection
4A peak turn off drive current
Micropower start-up & ultra low quiescent current
10.7V gate drive clamp
70ns turn-off propagation delay
Wide Vcc operating range
Direct sensing for both Synchronous Rectifiers
Minimal component count
Simple design
Lead-free
Product Summary
Topology
VD
V
OUT
I
o+
& I
o-
(typical)
Turn on Propagation Delay
Turn off Propagation Delay
LLC Half-bridge
200V
10.7V Clamped
+1A & -4A
60ns (typical)
70ns (typical)
Package Options
Typical Applications
•
LCD & PDP TV, Telecom SMPS, AC-DC adapters
8-Lead SOIC
Typical Connection Diagram
Vin
SR1
C1
Cdc
M1
Lr
1
2
1
2
3
4
GATE1
VCC
VS1
VD1
GATE2
GND
VS2
VD2
8
7
6
5
Rg1
C2
M2
IR1168
IR1168
Rg2
Cout
LOAD
Rtn
SR2
www.irf.com
© 2009 International Rectifier
IR1168S
Table of Contents
Description
Qualification Information
Absolute Maximum Ratings
Electrical Characteristics
Functional Block Diagram
Input/Output Pin Equivalent Circuit Diagram
Lead Definitions
Lead Assignments
Application Information and Additional Details
Package Details
Tape and Reel Details
Part Marking Information
Ordering Information
Page
3
4
5
6
8
9
10
10
12
16
17
18
19
www.irf.com
© 2009 International Rectifier
2
IR1168S
Description
IR1168 is dual smart secondary-side rectifier driver IC designed to drive two N-Channel power MOSFETs used as
synchronous rectifiers in resonant converter applications. The IC can control one or more paralleled N MOSFETs
to emulate the behavior of Schottky diode rectifiers. The drain to source for each rectifier MOSFET voltage is
sensed differentially to determine the level of the current and the power switch is turned ON and OFF in close
proximity of the zero current transition. Ruggedness and noise immunity are accomplished using an advanced
blanking scheme and double-pulse suppression that allows reliable operation in fixed and variable frequency
applications.
www.irf.com
© 2009 International Rectifier
3
IR1168S
Qualification Information
Qualification Level
†
Moisture Sensitivity Level
Machine Model
ESD
Human Body Model
IC Latch-Up Test
RoHS Compliant
†
††
†††
Industrial
Comments: This family of ICs has passed JEDEC’s
Industrial qualification. IR’s Consumer qualification level is
granted by extension of the higher Industrial level.
†††
MSL2 260°
C
SOIC8N
(per IPC/JEDEC J-STD-020)
Class B
(per JEDEC standard JESD22-A115)
Class 2
(per EIA/JEDEC standard EIA/JESD22-A114)
Class I, Level A
(per JESD78)
Yes
††
Qualification standards can be found at International Rectifier’s web site
http://www.irf.com/
Higher qualification ratings may be available should the user have such requirements. Please contact
your International Rectifier sales representative for further information.
Higher MSL ratings may be available for the specific package types listed here. Please contact your
International Rectifier sales representative for further information.
www.irf.com
© 2009 International Rectifier
4
IR1168S
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage
parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal
resistance and power dissipation ratings are measured under board mounted and still air conditions.
Parameters
Supply Voltage
Cont. Drain Sense Voltage
Pulse Drain Sense Voltage
Source Sense Voltage
Gate Voltage
Operating Junction Temperature
Storage Temperature
Thermal Resistance
Package Power Dissipation
Switching Frequency
Symbol
V
CC
V
D
V
D
V
S
V
GATE
T
J
T
S
R
θJA
P
D
fsw
Min.
-0.3
-3
-5
-3
-0.3
-40
-55
Max.
20
200
200
20
20
150
150
128
970
500
Units
V
V
V
V
V
°
C
°
C
°
C/W
mW
kHz
Remarks
V
CC
=20V, Gate off
SOIC-8
SOIC-8, T
AMB
=25°
C
www.irf.com
© 2009 International Rectifier
5
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
