Datasheet
Optocoupler-less
Isolated Flyback Converter
BD7F100HFN-LB BD7F100EFJ-LB
General Description
Key Specifications
This product guarantees long time supply availability in
the industrial instrumentation market.
Supply Voltage of Operation:
SW Terminal Operating Voltage:
Over Current Limit:
Switching Frequency:
Reference Voltage Accuracy:
Quiescent Current:
3V to 40V
50V (Max)
1.25A (Typ)
400kHz (Typ)
±1.5%
BD7F100 is an optocoupler-less Isolated Flyback
Converter. An optocoupler or the tertiary winding
feedback circuit which was needed to obtain a stable
0µA (Typ)
output voltage isolated by
a
transformer in the
Operating Current:
2mA (Typ)
conventional application becomes unnecessary, thus,
the number of parts is reduced drastically, producing a
small-sized and high-reliability application isolated type
power supply.
Junction Temperature of Operation: -40°C to +125°C
Packages
W(Typ)
D(Typ)
H(Max)
HSON8
2.90mm x 3.00mm x 0.60mm
4.90mm x 6.00mm x 1.00mm
HTSOP-J8
Furthermore, a highly by the use of the Original
Adapted-Type ON-Time Control Technology, it makes
the external phase compensation parts become
unnecessary, therefore a highly efficient isolated type
power supply application can easily be produced.
Features
Guaranteed long time supply availability for
Industrial Applications.
No need for an optocoupler or a transformer tertiary
winding.
The output voltage can be set by two external
resistors and the transformer turns ratio.
Uses Original Adapted Type ON-Time Control
Technology.
High-speed load response is realized and external
phase compensation parts are unnecessary.
Fixed switching frequency and low output ripple
Highly efficient light load mode available (PFM
operation)
HTSOP-J8
HSON8
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)
Application
Industrial equipment Isolated Power Supply
O Product structure : silicon monolithic integrated circuit O This product has no designed protection against radioactive rays
www.rohm.com
TSZ02201-0J1J0AJ00910-1-2
29.Jun.2016 Rev.002
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
1/28