Demoboard BD7F100HFN_EVK_202

Optocoupler-less Isolated Flyback Converter - BD7F100HFN-LB

Topology: Flyback
Input Voltage (min.): 24.00 V
Input Voltage (max.): 24.00 V
Output 1: 5.00 V / 1.000 A
Output 2: 15.00 V / 0.170 A
Output 3: -15.00 V / -0.170 A
Output 4: 5.00 V / 0.200 A

Original publication on 2016-03-01, revision 001


BD7F100HFN-LB is an optocoupler-lessIsolated Flyback Converter. An optocoupler or a3rd winding from a transformer needed in theconventional application of feedback circuitsbecomes unnecessary to obtain a stable outputvoltage isolated by the transformer. The numberof parts is reduced drastically producing a smallsizedand high-reliability application isolatedtype power supply.- No need for an optocoupler or a transformer 3rd winding.- Adapted Type ON-Time Control Technology.- High-speed load response- Efficient light load mode- Enables Shutdown Control- Built-in N-Channel MOSFET- Soft start function- Output load compensation function- Complete protection functions UVLO, OCP, TSD


  • Guaranteed long time supply availability forIndustrial Applications. No need for an optocoupler or a transformer tertiarywinding.The output voltage can be set by two externalresistors and the transformer turns ratio. Uses Original Adapted Type ON-Time ControlTechnology.High-speed load response is realized and externalphase compensation parts are unnecessary. Fixed switching frequency and low output ripple Highly efficient light load mode available (PFMoperation) Shutdown / Enable Control Built-in N-Channel MOSFET Soft start function Output load compensation function Protection functions:VIN Under Voltage Lock-Out (VIN UVLO)Over Current Protection (OCP)Thermal Shutdown Protection (TSD)


  Order Code SPEC Product series C
Tol. C VR
(V (DC))
Bauform H
Keramiktyp Technische Artikelnummer Anwendung PCB/Kabel/Panel Modularity Typ Pins Wire Section Samples
885012209006 PDF WCAP-CSGP MLCCs 10 V(DC) 22 ±10% 10 1210 2.5 10 X7R Class II X7R1210226K010DFCT10000
885012208094 PDF WCAP-CSGP MLCCs 50 V(DC) 4.7 ±10% 50 1206 1.6 10 X7R Class II X7R1206475K050DFCT10000
885012207098 PDF WCAP-CSGP MLCCs 50 V(DC) 100 ±10% 50 0805 0.8 2.5 X7R Class II X7R0805104K050DFCT10000
885012207100 PDF WCAP-CSGP MLCCs 50 V(DC) 220 ±10% 50 0805 1.25 3 X7R Class II X7R0805224K050DFCT10000
750315491 PDF Transformer
691102710002 PDF WR-TBL Series 102 - 5.00 mm Horiz. Entry Modular Pressure Clamp PCB Yes Horizontal 2 22 to 14 (AWG) 0.326 to 2.08 (mm²)
691102710003 PDF WR-TBL Series 102 - 5.00 mm Horiz. Entry Modular Pressure Clamp PCB Yes Horizontal 3 22 to 14 (AWG) 0.326 to 2.08 (mm²)