IR1166SPBF Datasheet, PDF (1/15 Pages) International Rectifier –
SMARTRECTIFIER CONTROL IC

Data Sheet PD-97237
IR1166SPbF
SmartRectifier^TM CONTROL IC
Features
• Secondary side high speed SR controller
• DCM, CrCM and CCM flyback 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
• 50ns turn off propagation delay
• Vcc range from 11.3V to 20V
• Direct sensing of MOSFET drain voltage
• Minimal component count
• Simple design
• Lead free
• Compatible with 1W Standby, Energy Star, CECP, etc.
Description
Package
IR1166S is a smart secondary side driver IC designed to drive N Channel power MOSFETs
used as synchronous rectifiers in isolated Flyback converters.
The IC can control one or more paralleled N MOSFETs to emulate the behavior of Schottky
diode rectifiers. 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 transi
tion.
Ruggedness and noise immunity are accomplished using an advanced blanking scheme
and double pulse suppression which allow reliable operation in continuous, discontinuous
8 Lead SOIC
and critical current mode operation and both fixed and variable frequency modes.
IR1166S Application Diagram
Vin
Rs
Rdc
XFM
Cs
Ci
U1
Cdc
1
8
VCC VGATE
2 _{OVT GND} 7
3 _MOT
VS ⁶
Co
RMOT 4 _EN
VD ⁵
IR1166S
Rg
Rtn
Q1
*Please note that this data sheet contains advanced information that could change before the product is released to production.
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