Texas Instruments High-Performance Analog PFC (Power Factor Correction) UC2854BQ

The UC2854BQ from Quarktwin Technology Ltd. is a Power Factor Correction (PFC) integrated circuit designed for high efficiency in power factor correction applications. It controls boost PWM to achieve near unity power factor while limiting line current distortion to less than 3%. This device operates worldwide without the need for switches and features accurate power limiting. The UC2854BQ utilizes fixed frequency average current mode control, which maintains stable and low distortion sinusoidal line current. It includes a high bandwidth (5MHz) low offset current amplifier and integrated current and voltage amplifier output clamps. The device offers enhanced features such as a VREF "good" comparator, improved enable comparator accuracy, and multiple under-voltage lockout (UVLO) threshold options. With a startup supply current of 300mA and a maximum supply voltage of 22V, the UC2854BQ is suitable for a variety of applications. It is available in DIL-16 and SOIC-16 packages, making it versatile for different design requirements. The device's specifications indicate a robust performance in demanding environments, with a storage temperature range of -65¬8C to +150¬8C.