Datasheet
Isolated DC/DC Converter IC
Isolated Type Fly-back Converter IC
with Integrated Switching MOSFET
for Automotive
BD7F205EFJ-C
General Description
Key Specifications
◼ Input Voltage Range:
VIN Pin
BD7F205EFJ-C is an opto-coupler-less isolated flyback
converter. Feedback circuit by optocouplers or the
auxiliary winding of transformers becomes unnecessary,
contributing to reduction of set parts. Furthermore, the
adoption of original adapted ON-time control technology
enables fast load response. In addition, the various
protection function realizes the designs of isolated power
supply application for high reliability.
3.4 V to 42.0 V
60 V (Max)
363 kHz (Typ)
± 2.8 % (Typ)
0 μA (Typ)
SW Pin
◼ Switching Frequency:
◼ Reference Voltage Precision:
◼ Shutdown Current:
◼ Operating Ambient Temperature Range
-40 °C to +125 °C
Features
Package
HTSOP-J8
W (Typ) x D (Typ) x H (Max)
◼ AEC-Q100 Qualified (Note 1)
4.9 mm x 6.0 mm x 1.0 mm
◼ No Need for Optocoupler and Third Winding of
Transformer
◼ Set Output Voltage with Two External Resistors and
Ratio of Transformer Turns
◼ Adopt of Original Adapted ON-Time Control Technology
Fast Load Response
◼ High Efficiency at Light Load Mode (PFM Operation)
◼ Shutdown Function / Enable Control
◼ Built-in 60 V Switching MOSFET
◼ Frequency Spectrum Spread
◼ Soft Start Function
◼ Load Compensation Function
◼ Various Protection Function
Input Low Voltage Lockout (UVLO)
Over Current Protection (OCP)
Thermal Shutdown (TSD)
Applications
◼
Automotive Isolated Power Supplies
(E-Comp, Inverter etc)
◼
Industrial Isolated Power Supplies
REF Pin Open Protection (REFOPEN)
Short Circuit Protection (SCP)
Battery Short Protection (BSP)
◼ HTSOP-J8 Package
(Note 1) Grade 1
Typical Application Circuit
VF
VOUT+
VIN
VIN
NS
NP
SDX/EN
VOUT-
SW
FB
REF GND
L_COMP
RFB
RREF
〇Product structure : Silicon integrated circuit 〇This product has no designed protection against radioactive rays.
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