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PDF IR1169S Data sheet ( Hoja de datos )
| Número de pieza | IR1169S | |
| Descripción | ADVANCED SMARTRECTIFIERTM CONTROL IC | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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IR1169S
ADVANCED SMARTRECTIFIERTM CONTROL IC
Features
Product Summary
• Secondary side high speed SR controller
• Flyback, Forward and Half-bridge topologies
• CCM operation with SYNC function
Topology
Flyback, Forward, Half-
Bridge
• 200V proprietary IC technology
VD 200V
• Max 500KHz switching frequency
• Anti-bounce logic and UVLO protection
VOUT
10.7V
• 4A peak turn off drive current
• Micropower start-up & low quiescent current
• 10.7V gate drive clamp
• 50ns turn-off propagation delay
Io+ & I o- (typical)
+1A & -4A
Turn on Propagation
Delay
70ns (typical)
•
•
Vcc range from 11V to 20V
Enable function synchronized with MOSFET VDS
Turn off Propagation
Delay
50ns (typical)
transition
•
Cycle by Cycle MOT Check
false trigger GATE pulses
Circuit
prevents
multiple
Package
Options
• Lead-free
• Compatible with 0.3W Standby, Energy Star, CECP,
etc.
Typical Applications
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• Telecom SMPS, ATX SMPS, Server SMPS, AC-DC
adapters
8-Lead SOIC
Ordering Information
Base Part Number
Package Type
IR1169S
SOIC8N
Standard Pack
Form
Quantity
Tube/Bulk
95
Tape and Reel
2500
Complete Part Number
IR1169SPBF
IR1169STRPBF
1 www.irf.com © 2012 International Rectifier
December 12, 2012
datasheet pdf - http://www.DataSheet4U.net/
1 page  
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
Remarks
Supply Voltage
VCC -0.3
20
V
Enable Voltage
VEN -0.3
20
V
Cont. SYNC Voltage
Pulse SYNC Voltage
VSYNC
VSYNC
-0.3
-0.7 ①
20
20
V
V
SYNC Current
ISYNC
-10
10
mA
Cont. Drain Sense Voltage
VD -1 200 V
Pulse Drain Sense Voltage
VD -5 200 V
Source Sense Voltage
VS -3 20
V
Gate Voltage
VGATE
-0.3
20
V VCC=20V, Gate off
Operating Junction Temperature
TJ
-40 150
°C
Storage Temperature
TS -55 150 °C
Thermal Resistance RθJA 128 °C/W SOIC-8
Package Power Dissipation
PD
970 mW SOIC-8, TAMB=25°C
① An input resistor of 2kΩ or above is required to SYNC pin for negative pulse
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions.
Symbol
Definition
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Min.
VCC Supply voltage
VD Drain Sense Voltage
11
②
-3
TJ Junction Temperature
Fsw Switching Frequency
-25
---
② VD -3V negative spike width ≤100ns
Max.
19
200
125
500
Units
V
°C
kHz
Recommended Component Values
Symbol
Component
RMOT
MOT pin resistor value
Min.
5
Max.
75
Units
kΩ
5 www.irf.com © 2012 International Rectifier
December 12, 2012
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
IR1169S
Detailed Pin Description
VCC: Power Supply
This is the supply voltage pin of the IC and it is monitored by the under voltage lockout circuit. It is possible to turn
off the IC by pulling this pin below the minimum turn off threshold voltage, without damage to the IC.
To prevent noise problems, a bypass ceramic capacitor connected to Vcc and COM should be placed as close as
possible to the IR1169. This pin is internally clamped.
SYNC: Direct Turn-off and Reset
SYNC is used to directly turn-off the SR MOSFET by an external signal. The gate output of IR1169 is low when
SYNC voltage is higher than VSYHI threshold. The propagation delay from SYNC goes high to gate turns off is
55ns. The turn-off of SYNC is a direct control and it ignores the MOT time (override).
The SYNC pin will reset MOT and Blanking time when SYNC switches from low to high. It will reset MOT timer
and Blanking timer only at the rising edge of signal. This function is useful for very low output voltage condition
(such as overload or short circuit) where the VD voltage is too low to reach Vth3 threshold to reset the timers.
SYNC pin also can be used to control the turn-on time of SR MOSFET (adding additional delay time at turn-on for
noise immunity).
If not used, SYNC pin should be connected to GND.
MOT: Minimum On Time
The MOT programming pin controls the amount of minimum on time. When VSYNC is low and VTH2 is crossed, the
gate signal will become active and turn on the power FET. Spurious ringings and oscillations can trigger the input
comparator off. The MOT blanks the input comparator keeping the FET on for a minimum time.
The MOT is programmed between 200ns and 3us (typ.) by using a resistor referenced to COM.
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EN: Enable
This pin is used to activate the IC “sleep” mode by pulling the voltage level below 1.6V (typ). In sleep mode the IC
will consume a minimum amount of current. All switching functions will be disabled and the gate will be inactive.
VD: Drain Voltage Sense
VD is the voltage sense pin for the power MOSFET Drain. This is a high voltage pin and particular care must be
taken in properly routing the connection to the power MOSFET drain.
VS: Source Voltage Sense
VS is the differential sense pin for the power MOSFET Source. This pin should be connected directly to the power
ground pin (7) but must be used to create a kelvin contact as close as possible to the power MOSFET source pin.
GND: Ground
This is ground potential pin of the integrated control circuit. The internal devices and gate driver are referenced to
this point.
VGATE: Gate Drive Output
This is the gate drive output of the IC. Drive voltage is internally limited and provides 1A peak source and 4A peak
sink capability. Although this pin can be directly connected to the power MOSFET gate, the use of minimal gate
resistor is recommended, especially when putting multiple FETs in parallel.
Care must be taken in order to keep the gate loop as short and as small as possible in order to achieve optimal
switching performance.
11 www.irf.com © 2012 International Rectifier
December 12, 2012
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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