Texas Instruments UCC3895 | Demoboard PMP9622A

Description

This reference design uses the UCC3895 Phase-Shifted Full Bridge controller to implement a high efficiency, 120VAC input to 44Vdc up to 8A output. The power supply is set up to be constant voltage-constant current. The voltage and current are set by fixed resistor values and could be set by micro-processor in the actual product. The design is biased by a low-cost BJT Flyback using the UCC28720 PWM controller.

Features

• 120Vac input, 44Vdc @ 2-8A output

• 92% efficiency achieved @ 8A

• High-side Gate Drive Tranformers used for lowest cost implementation.
• Low-cost BJT flyback used for design bias
• Flexible setting of Voltage and Current levels by fixed resistor values or micro-processor in real design

More information

• Datasheet
• IC product information