IR1169S
ADVANCED SMARTRECTIFIER
TM
CONTROL IC
Features
Secondary side high speed SR controller
Flyback, Forward and Half-bridge topologies
CCM operation with SYNC function
200 V proprietary IC technology
Max 500 KHz switching frequency
Anti-bounce logic and UVLO protection
4 A peak turn off drive current
Micropower start-up & low quiescent current
10.7 V gate drive clamp
50 ns turn-off propagation delay
Vcc range from 11 V to 20 V
Enable function synchronized with MOSFET VDS
transition
Cycle by Cycle MOT Check Circuit prevents
multiple false trigger GATE pulses
Lead-free
Compatible with 0.3 W Standby, Energy Star,
CECP, etc.
Product Summary
Topology
VD
V
OUT
I
o+
& I
o-
(typ.)
Turn on Propagation
Delay (typ.)
Turn off Propagation
Delay (typ.)
Flyback, Forward, Half-
Bridge
200 V
10.7 V
+1 A & -4 A
70 ns
50 ns
Package Options
8-Lead SOIC
Typical Applications
Telecom SMPS, ATX SMPS, Server SMPS, AC-
DC adapters
Ordering Information
Standard Pack
Base Part Number
IR1169S
Package Type
Form
SOIC8N
Tube/Bulk
Tape and Reel
Quantity
95
2500
IR1169SPBF
IR1169STRPBF
Complete Part Number
1
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© 2013 International Rectifier
Nov 6, 2013
IR1169S
Typical Connection Diagram
L
Vin
VOUT
RCC
CVCC
vcc
Rg
Cin
VCC
1
SYNC
2
MOT
3
EN
4
GATE
8
GND
7
VS
6
VD
5
QFWL
Cout
Rmot
IR1169
IR1169S
Rtn
Primary
Controller
2
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© 2013 International Rectifier
Nov 6, 2013
IR1169S
Table of Contents
Ordering Information
Description
Absolute Maximum Ratings
Electrical Characteristics
Functional Block Diagram
Input / Output Pin Equivalent Circuit Diagram
Lead Definitions
Lead Assignments
Detailed Pin Description
Application Information and Additional Details
Package Details
Tape and Reel Details
Part Marking Information
Qualification Information
Page
1
4
5
6
8
9
10
10
11
12
25
26
27
28
3
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© 2013 International Rectifier
Nov 6, 2013
IR1169S
Description
IR1169 is a smart secondary-side driver IC designed to drive N-Channel power MOSFETs used as synchronous
rectifiers in isolated Flyback, Forward or Half-bridge converters. The IC can control one or more paralleled N-
MOSFETs to emulate the behavior of Schottky diode rectifiers. IR1169 works in both DCM and CCM operation
modes. The SYNC pin should be used in CCM mode to directly turn-off the MOSFET by a signal from secondary
or primary controller. The IC is designed to use simple capacitor coupling interface to communicate with primary
controller. In addition to the SYNC control, the drain to source voltage is sensed differentially to determine the
polarity of the current and turn the power switch on and off in proximity of the zero current transition. Ruggedness
and noise immunity are accomplished using an advanced blanking scheme and double-pulse suppression which
allow reliable operation in all operating modes.
4
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© 2013 International Rectifier
Nov 6, 2013
IR1169S
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
Symbol
Min.
Max.
Units
Supply Voltage
V
CC
-0.3
20
Enable Voltage
V
EN
-0.3
20
V
Cont. SYNC Voltage
V
SYNC
-0.3
20
†
Pulse SYNC Voltage
V
SYNC
20
-0.7
SYNC Current
I
SYNC
-10
10
mA
Cont. Drain Sense Voltage
V
D
-1
200
Pulse Drain Sense Voltage
V
D
-5
200
V
Source Sense Voltage
V
S
-3
20
Gate Voltage
V
GATE
-0.3
20
Operating Junction Temperature
T
J
-40
150
°C
Storage Temperature
T
S
-55
150
Thermal Resistance
128
°C/W
R
JA
Package Power Dissipation
P
D
970
mW
Switching Frequency
fsw
500
kHz
†
An input resistor of 2kΩ or above is required to SYNC pin for negative pulse
Remarks
V
CC
=20V, Gate off
SOIC-8
SOIC-8, T
AMB
=25°C
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions.
Symbol
Definition
V
CC
Supply Voltage
V
D
Drain Sense Voltage
T
J
Junction Temperature
Fsw
Switching Frequency
††
V
D
-3V negative spike width
≤
100ns
Min.
11
-3
-25
---
††
Max.
19
200
125
500
Units
V
°C
kHz
Recommended Component Values
Symbol
R
MOT
Component
MOT pin resistor value
Min.
5
Max.
75
Units
k
5
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© 2013 International Rectifier
Nov 6, 2013
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