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For designers of high power flyback and resonant ½ bridge converters for laptops, mini-PCs, LCD & PDP TVs and games SMPS,
the Smart Rectifier™ offers a simple, high efficiency solution for secondary synchronous rectification (SR) in all
operational modes and application conditions.
The IR1167 and IR1166 are secondary control ICs with built-in 7A and 3A (respectively) gate drive. Operating independently from the primary side, it uses a
proprietary ‘Voltage Level Detection’ technique to minimize wasteful secondary reactive currents to maximize secondary
efficiency.
The proprietary 200V HVIC technology allows direct sensing and control of IR’s world-class range of Standard- or Logic-Level,
30-200V HEXFET MOSFETs.
Flyback Example
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THE IR ADVANTAGE
 | Simple, powerful solution |
| Enables
Higher efficiency
Higher Power density
Faster time to market
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| Complies with CEC 80plus and 1W standby requirements |
| Proprietary Voltage Level Detection and 200V HVIC technology |
| Direct connection and drive to all 30-200V MOSFETs |
| Fast, powerful (7A), Accurate, high efficiency operation up to 500kHz (IR1167) |
| Independent from primary side |
| Operates in all modes |
| In 120W laptop adaptor, enables
1% efficiency increase
10°C lower temperature
75% fewer SR components
20% lower SR system cost
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| Enables ‘no heatsink’ SR designs |
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