11 kW OBC Reference Design
A three-phase On Board Charger (OBC) platform achieving state-of-the-art system efficiency with AEC-Q SiC power devices and drivers.Learn More
SECO-HVDCDC1362-15W-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 15 W over a wide input DC voltage range from 250 V to 900 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 NVHL160N120SC1 160 m 1200 V silicon carbide (SiC) MOSFET, and the FFSD0665B-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 notable driving capabilities of the NCV1362 controller allows for direct operation of the SiC FET at 12V 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.
|Video||Automotive High Voltage Auxiliary Power Supply||WVD17468/D|
|Eval Board: Manual||SECO-HVDCDC1362-15W-GEVB User's Manual||EVBUM2752/D - 2563 KB||2|
|Eval Board: BOM||SECO-HVDCDC1362-15W-GEVB Bill of Materials (ROHS Compliant)||SECO-HVDCDC1362-15W-GEVB_BOM_ROHS - 611 KB||2|
|Eval Board: Gerber||SECO-HVDCDC1362-15W-GEVB Gerber Layout Files (Zip Format)||SECO-HVDCDC1362-15W-GEVB_GERBER - 215 KB||1|
|Eval Board: Schematic||SECO-HVDCDC1362-15W-GEVB Schematic||SECO-HVDCDC1362-15W-GEVB_SCHEMATIC - 338 KB||1|
|Eval Board: Test Procedure||SECO-HVDCDC1362-15W-GEVB Test Procedure||SECO-HVDCDC1362-15W-GEVB_TEST_PROCEDURE - 755 KB||1|