Texas Instruments UC2855B
- Part Number:
- UC2855B
- Manufacturer:
- Texas Instruments
- Ventron No:
- 5184534-UC2855B
- Description:
- High Performance Power Factor Preregulator
- ECAD Model:
-
- Datasheet:
- UC2855B
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UC2855B More Descriptions
the uc3855a/b provides all the control features necessary for high power high frequency pfc boost converters. the average current mode control method allows for stable low distortion ac line current programming without the need for slope compensation. in addition the uc3855 utilizes an active snubbing or zvt (zero voltage transition technique) to dramatically reduce diode recovery and mosfet turn-on losses resulting in lower emi emissions and higher efficiency. boost converter switching frequencies up to 500khz are now realizable requiring only an additional small mosfet diode and inductor to resonantly soft switch the boost diode and switch. average current sensing can be employed using a simple resistive shunt or a current sense transformer. view all in datasheet
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