ROHM

BD7F100HFN
Demoboard BD7F100HFN_EVK_205

Optocoupler-less Isolated Flyback Converter

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

Original publication on 2016-03-01, revision 001

Description

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

Characteristics

  • Supply Voltage of Operation: 3 V to 40 V• SW Terminal Operating Voltage: 50 V (Max)• Built-in MOS Current Limit: 1.25 A (Typ)• Switching Frequency of 400 kHz (Typ)• ±1.5 % of Reference Voltage Accuracy• Quiescent Current: 0 μA (Typ)• Operating Current: 2 mA (Typ)• Operating Ambient Temperature:
  • 40 °C to +85 °C• Junction Temperature of Operation:
  • 40 °C to +125 °C

Products

  Order Code SPEC Product series Anwendung PCB/Kabel/Panel Modularity Typ Pins Wire Section C
(µF)
Tol. C VR
(V (DC))
Bauform DF
(%)
Keramiktyp H
(mm)
Technische Artikelnummer Samples
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)
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)
750315490 PDF Transformer
885012209006 PDF WCAP-CSGP MLCCs 10 V(DC) 22 ±10% 10 1210 10 X7R Class II 2.5 X7R1210226K010DFCT10000
885012208094 PDF WCAP-CSGP MLCCs 50 V(DC) 4.7 ±10% 50 1206 10 X7R Class II 1.6 X7R1206475K050DFCT10000
885012207098 PDF WCAP-CSGP MLCCs 50 V(DC) 100 ±10% 50 0805 2.5 X7R Class II 0.8 X7R0805104K050DFCT10000
885012207100 PDF WCAP-CSGP MLCCs 50 V(DC) 220 ±10% 50 0805 3 X7R Class II 1.25 X7R0805224K050DFCT10000