UCC28781EVM-053 is a prototype evaluation module and is available in limited quantities.
UCC28781EVM-053
UCC28781-Q1 evaluation module for automotive 500-Vdc input ZVS-flyback power supply applications
UCC28781EVM-053
Overview
UCC28781EMV-053 demonstrates high-efficiency, high-density, high-voltage automotive bias supply with 60-W , 15-V ouput using a zero-voltage-switching flyback (ZVSF) controller. The UCC28781-Q1 drives a primary-side silicon MOSFET directly and drives a secondary-side synchronous rectifier through a UCC5304 isolated gate-driver to increase efficiency and to achieve ZVS.
Features
- High frequency operation >150 kHz enables small solution size while multi-mode operation maintains high efficiency across line and load.
- Fixed 15-V output is rated for 4 Adc when the input is between 500 Vdc and 250Vdc, and is derated to 2 A for inputs between 250 Vdc and 50 Vdc.
- Efficiency > 94% at 250 Vdc, full load and stand-by power < 70 mW at 500 Vdc, no load.
- Also included on-board is an optional means to power the EVM from a 90-Vac to 264-Vac source.
- This circuit design is tested and is available as an EVM with a corresponding user's guide.
Flyback controllers
Isolated gate drivers
Order & start development
Evaluation board
UCC28781EVM-053 — UCC28781-Q1 evaluation module for automotive 500-Vdc input ZVS-flyback power supply applications
Not available on TI.com
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| Certificate | UCC28781EVM-053 EU RoHS Declaration of Conformity (DoC) | Aug. 19, 2021 | ||
| User guide | Using the UCC28781EVM-053 Zero-Voltage-Switching Flyback Converter | PDF | HTML | Jun. 30, 2021 | |
| Data sheet | UCC28781-Q1 Zero-Voltage-Switching Flyback Controller with Dedicated Synchronous Rectifier Gate-Drive datasheet | PDF | HTML | Feb. 24, 2021 |
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