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PDF IR1168S Data sheet ( Hoja de datos )
| Número de pieza | IR1168S | |
| Descripción | DUAL SMART RECTIFIER DRIVER IC | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de IR1168S (archivo pdf) en la parte inferior de esta página. Total 22 Páginas | ||
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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
VOUT
Io+ & I o- (typical)
Turn on Propagation Delay
Turn off Propagation Delay
Package Options
LLC Half-bridge
200V
10.7V Clamped
+1A & -4A
60ns (typical)
70ns (typical)
Typical Applications
• LCD & PDP TV, Telecom SMPS, AC-DC adapters
8-Lead SOIC
Typical Connection Diagram
Vin
C1
M1
Lr
12
C2
Rtn
M2
SR1
Cdc
Rg1
1 GATE1 GATE2 8
2 VCC
GND 7
3 VS1
VS2 6
4 VD1
VD2 5
IR11IR618168
Rg2
SR2
Cout
LOAD
www.irf.com
© 2009 International Rectifier
1 page  
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
VCC
VD
VD
VS
VGATE
TJ
TS
RθJA
PD
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
VCC=20V, Gate off
SOIC-8
SOIC-8, TAMB=25°C
www.irf.com
© 2009 International Rectifier
5
5 Page 
IR1168S
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 IR1168. This pin is not internally clamped.
GND: Ground
This is ground potential pin of the integrated control circuit. The internal devices and gate driver are referenced to
this point.
VD1 and VD2: Drain Voltage Sense
These are the two high-voltage pins used to sense the drain voltage of the two SR power MOSFETs. Routing
between the drain of the MOSFET and the IC pin must be particularly optimized.
VS1 and VS2: Source Voltage Sense
These are the two differential sense pins for the two source pins of the two SR power MOSFETs. This pin must
not be connected directly to the GND pin (pin 7) but must be used to create a kelvin contact as close as possible
to the power MOSFET source pin.
GATE1 and GATE2: Gate Drive Outputs
These are the two gate drive outputs of the IC. The gate voltage is internally clamped and has a +1A/-4A peak
drive capability. Although this pin can be directly connected to the synchronous rectifier (SR) MOSFET gate, the
use of gate resistor is recommended (specifically when putting multiple MOSFETs 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.
www.irf.com
© 2009 International Rectifier
11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet IR1168S.PDF ] | |
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