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Texas Instruments UCC3895 | Demoboard PMP9622A
350W Constant Voltage - Constant Current (CVCC) Phase-Shifted Full Bridge reference design
Overview
| Topology | Flyback Converter |
| Input voltage | 120 V |
| Output 1 | 44 V / 8 A |
| IC revision | A |
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
