Low Noise Quasi-Resonant Control DC/DC converter IC for AC/DC Converter - BD7682FJ-LB

The BD7682FJ-LB is a quasi-resonant controller-type DC/DC converter optimized for products equipped with an electrical outlet. Quasi-resonant operation enables soft switching and helps to keep EMI low, while utilizing an external switching MOSFET and current detection resistor provides greater design flexibility. Additional features include a brown out function that monitors the input voltage for system optimization and a burst mode function for reducing power during light loads. Multiple protection functions are also incorporated to provide greater reliability, such as soft start, burst mode, per-cycle overcurrent limiter, and overvoltage/overload protection. A gate clamp circuit is built in as well for optimizing SiC MOSFET drive.

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SCT2H12NZ(1700V SiC-MOSFET) and BD7682FJ-LB(AC/DC Converter IC) Evaluation Board
Apprication Note (PDF: 1.9MB), Presentation Document (PDF: 1.0MB), Buy Evaluation Board

número de peça
Estado de Condição
Quantidade Unidade
Quantidade mínima Package
tipo de embalagem
BD7682FJ-LBE2 Active SOP-J8 2500 2500 Taping sim
Controller Type QR
Vin1(Min.)[V] 15.0
Vin1(Max.)[V] 27.5
SW frequency(Max.)[KHz] 120.0
Vcc OVP Latch
Channel 1
Light Load mode Yes
Soft Start Yes
Thermal Shut-down Yes
Under Voltage Lock Out Yes
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
    • Pin 8 : SOP-J8 Package (6.00mm × 4.90mm : 1.27mm pitch [TYP] )
    • Quasi-resonant type (low EMI)
    • Frequency reduction mode
    • Low current consumption (19µA), during standby
    • Low current consumption when no load (burst operation when light load)
    • Maximum frequency (120kHz)
    • CS Pin Leading-Edge Blanking
    • VCC UVLO (Under Voltage Drop Out protection)
    • VCC OVP (Over Voltage Protection)
    • Per-cycle over-current protection circuit
    • Soft start
    • ZT trigger mask function
    • Voltage protection function (brown out)
    • ZT OVP (Over Voltage Protection)
    • Gate-clamp circuit
Dados técnicos
Application Note

BD7682FL-LB Application Note

Application Note

Thermal Resistance