UC2854DW

The Texas Instruments UC2854DW is a Bipolar CCM PFC controller that provides active power factor correction for power systems. It is designed to draw near-sinusoidal current from sinusoidal power lines, minimizing line-current distortion to less than 5%.

Key features include a maximum duty cycle of 95%, support for line frequencies across the 50Hz-400Hz range, and operation from -40°C to 85°C. The device incorporates average current-mode control, continuous control mode, and an enable function. It also offers features such as world-wide operation without switches, feedforward line regulation, low noise sensitivity, low startup supply current, fixed-frequency PWM drive, a low-offset analog multiplier and divider, a 1-A totem-pole gate driver, and a precision voltage reference.

The UC2854DW is available in SOIC (DW) and PDIP (N) packages. The SOIC package has an area of 106.09 mm² (10.3 mm × 10.3 mm), while the PDIP package has an area of 181.42 mm² (19.3 mm × 9.4 mm). Both packages contain 16 leads.

This part is not recommended for new designs. Existing customers can continue to use it, but new designs should consider an alternate product like the UCC28180.