SECO-HVDCDC1362-40W-GEVB 40 W SiC High-Voltage Auxiliary Power Supply for HEV & BEV Applications Evaluation Board User's Manual
■SECO−HVDCDC1362−40W−GEVB is highly efficient and primary−side regulated (PSR) auxiliary power supply targeting HEV and EV automotive power trains. The design provides a stable 15 V output and 40 W over a wide input DC voltage range from 250 V to900 V, and is therefore suitable for 400 V and 800 V battery systems.
■The board employs the NCV1362 quasi−resonant peak current PSR flyback controller, the 3−lead cost−optimized NVHL160N120SC1160ΩW 1200 V silicon carbide (SiC) MOSFET, and theFFSP0665B−F085 SiC diode.
■Thanks to the high blocking voltage capabilities and ultra−low gate charge (34 nC) value of the SiC FET, the switching losses are significantly reduced, and the board exhibits a superior efficiency for the application up to 86% in low line input conditions. The not able driving capabilities of the NCV1362 controller allows for direct operation of the SiC FET at 12 V without a pre−driver, simplifying the layout and cutting down the component count.
■The flyback transformer provides 4 kV isolation and is optimized to minimize the losses on the RCD snubber. Consequently the system effectively dampens the drain voltage overshoot at high line, and provides 100 V margin for the SiC FET. The board is fully realized with automotive qualified semiconductors and passive devices.Industrial grade replacements are also available.
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[ HEV & EV Vehicles Auxiliary Power Supplies ][ Automotive Powertrain Systems ][ EV Charging and DC−DC Conversion ][ Industrial DC−DC Conversion ][ Solar Inverts (with Industrial Grade) ] |
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Evaluation Board User's Manual |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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June, 2021 |
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Rev. 1 |
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EVBUM2763/D |
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2.1 MB |
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