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400V – 12V/500W High Frequency Resonant Converter Reference Design Using High Voltage GaN Devices
PMP20289
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- PMP20289 Test Results
(PDF 4046 KB)
16 Aug 2016
- 400V In to 12V Out, 500W Using LMG3410 User Guide
(PDF 213 KB)
17 Aug 2016
Description
The PMP20289 was built and tested to verify the performance of a high frequency (>400kHz nominal switching frequency) LLC series resonant converter (LLC-SRC) implemented with Texas Instrument’s high voltage GaN FETs under nominal (390V to 12V) voltage conversion. The digital controller UCD3138A is used along with the UCD7138 SR controller to optimize LLC-SRC efficiency. TI’s high voltage direct drive GaNFET LMG3410 is used to enable fast switching and be able to minimize dead-time between half-bridge switches. The test results show that 96.8% peak efficiency is achieved at 24A load and 96.3% efficiency is achieved at 42A full load with a switching frequency over 350kHz in a 390V to 12V conversion.
Features
- 400V – 12V/500W high frequency LLC series resonant converter
- 350kHz resonant frequency and 500kHz switching frequency at 400V to 12V conversion
- Utilize TI high voltage direct drive GaN FETs as input switches
- Optimized LLC SR conduction with UCD7138/UCD3138A
- Achieve peak 96.8% efficiency
See the Important Notice and Disclaimer covering reference designs and other TI resources.
