Demoboard BD7682FJ-EVK-401

Low Noise Quasi-Resonant Control DC/DC converter IC for AC/DC Converter

Topology: LLC Resonant
Input Voltage (min.): 300.00 V
Input Voltage (max.): 900.00 V
Switching Frequency (min.): 106.00 kHz
Switching Frequency (max.): 134.00 kHz
Output 1: 25.20 V / 1.000 A

Original publication on 2019-02-01, revision 001


The BD7682FJ-EVK-401, BD7682FJ-EVK-001 evaluation board outputs 24 V voltage from the input of 300 Vdc to 900 Vdc. The output current supplies up to 1 A. The BD768xFJ-LB series are Quasi-Resonant switching AC/DC converter for driving SiC (Silicon Carbide)–MOSFET. Using external switching MOSFET and current detection resistors provides a lot of flexibility in the design. Power efficiency is improved by the burst function and the reduction of switching frequency under light load conditions. This is the product that guarantees long time support in the Industrial market.


  • Quasi-resonant method (Maximum frequency control 120kHz)/Current mode
  • Low power when load is light ( Burst operation) / Frequency reduction function
  • VCC pin : under voltage protection / over voltage protection
  • Leading-Edge-Blanking function
  • Over-current protection (cycle-by-cycle)
  • ZT Trigger mask function
  • AC voltage protection
  • Soft start
  • Brown IN/OUT function
  • Gate Clamp circuit
  • MASK Function


  Order Code SPEC Product series L
RDC typ.
RDC max.
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