UCC2893 PWM controller SMD IC

UCC2893 SMD IC

The UCC2891/2/3/4 family of PWM controllers is designed to simplify implementation of the various active clamp/reset switching power topologies. The UCC289x is a peak current-mode, fixed frequency, high-performance pulse width modulator. It includes the logic and the drive capability for the auxiliary switch with a simple method of programming the critical delays for proper active clamp operation.

The UCC2891/3 includes a 110-V start-up regulator for initial start-up and to provide keep-alive power during stand-by.

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• Low Output Jitter
  

• Soft−Stop Shutdown of MAIN and AUX

• Ideal for Active Clamp/Reset Forward, Fly back Converters

• Provides Complementary Auxiliary Driver with Programmable Deadtime (Turn-On Delay) between AUX and MAIN Switches

• Peak Current-Mode Control with Cycle-by-Cycle Current Limiting

• 110-V Input Startup Regulator on UCC2891/3

• True Drive 2-A Sink, 2-A Source Outputs

• Accurate Line UV and Line OV Threshold

• Programmable Slope Compensation

Applications of UCC2893 SMD IC

• 150-W to 700-W SMPS
  

• High-Efficiency, Low EMI/RFI Off-Line or DC/DC Converters
  

• Server, 48-V Telecom, Datacom
  

• High Power Adapter, LCD-TV and PDP-TV
  

Package Includes

1 x UCC2893 SMD IC