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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.

SCT2H12NZ(1700V SiC-MOSFET) and BD7682FJ-LB(AC/DC Converter IC) Evaluation Board
BD7682FJ-LB-EVK-402 [Input: AC 400-690V , Output: 24V DC]
Apprication Note , Presentation Document , Buy Evaluation Board
BD7682FJ-EVK-301 [Input: AC 210-480V DC 300-900V , Output: 12V DC]
Application Note, Evaluation Board User Guide, Quick Start Guide, Inquiry Evaluation Board

Part Number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD7682FJ-LBE2 Active SOP-J8 2500 2500 Taping Yes
 
Specifications:
FET -
Controller Type QR
Vin1(Min.)[V] 15.0
Vin1(Max.)[V] 27.5
SW frequency(Max.)[KHz] 120.0
Vcc OVP Latch
BR PIN Yes
Channel 1
Light Load mode Yes
EN No
Soft Start Yes
Thermal Shut-down Yes
Under Voltage Lock Out Yes
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
Features:
    • 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
 
 
 
 
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New Products:
 
 
Technical Data
Evaluation Board User's Guide

BD7682FJ-EVK-301 EV BOARD USER GUIDE

Quick Start Guide

BD7682FJ-EVK-301 BOARD QUICK START GUIDE

BD7682FL-LB Application Note

Quasi-resonant auxiliary power supply with 1700V SiC MOSFET

Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.