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Texas Instruments UCC25800-Q1 | Demoboard PMP40980
Ultra-low EMI transformer driver for isolated bias supplies
Overview
| Topology | LLC Resonant Converter |
| Input voltage | 9-34 V |
| Output 1 | 18 V / 0.13 A |
| Output 2 | 2.5 V / 0.96 A |
Description
This reference design is an open-loop LLC converter, which provides four 18-V and 2.5 V outputs and up to 2.4 W for onboard charger applications. UCC25800-Q1 is used as the controller. LLC topology allows the transformer to have significant leakage inductance, but a much smaller primary-secondary capacitance, which significantly reduces common-mode current injection through the bias transformer.
Features
- Small size open-loop LLC
- Reinforce insulation
- Compact PCB size (55 mm * 45 mm)
Typical applications
- Industrial motors, elevators and escalators
- GaN, IGBT and SiC gate transformer driver bias supply
- Automotive traction inverter & motor control, Automotive DC/DC converter, Automotive on-board charger (OBC), EV charging station, DC fast charging station
- UPS and solar inverters