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© 2021 ROHM Co., Ltd.

 

No. 63UG030E Rev.001

 

SEP.2021

 

User’s  Guide 

Switching Regulator Series 

Isolated Flyback DC/DC Converter 
BD7J200EFJ-LB EVK 

BD7J200EFJ-EVK-002 (48V

12V, 1A) 

BD7J200EFJ-EVK-002 delivers an output 12 volts from an input 48 volts using BD7J200EFJ-LB, Isolated Flyback DC/DC converter integrated circuit, 

with output current rating of maximum 1A. 

 

Performance specification 

These are representative values, and it is not a guaranteed against the characteristics. 

V

IN

 = 48V, V

OUT

 = 12V, unless otherwise specified.   

Parameter 

Min 

Typ 

Max 

Units 

Conditions 

Input Voltage 

 

48.0 

 

 

Output Voltage 

 

12.0 

 

R4=2kΩ, R5=78.7kΩ 

Output Current Range 

100 

 

1000 

mA 

Maximum

 

Output Power

12W 

Operating Frequency 

 

400 

 

kHz 

 

Maximum Efficiency 

 

84 

 

Io = 1000mA 

 

EVK

 

PCB size: 70mm×50mm×1.6mm 

Figure 1. BD7J200EFJ-EVK-002

                                     

Figure 2. BD7J200EFJ-EVK-002 

Top View             

                                                         

Bottom View 

 

Summary of Contents for BD7J200EFJ-EVK-002

Page 1: ...Switching Regulator Series Isolated Flyback DC DC Converter BD7J200EFJ LB EVK BD7J200EFJ EVK 002 48V 12V 1A...

Page 2: ...tal contact or even bringing your hand close to the board may result in discharge and lead to severe injury or death Therefore DO NOT touch the board with your bare hands or bring them too close to th...

Page 3: ...t current rating of maximum 1A Performance specification These are representative values and it is not a guaranteed against the characteristics VIN 48V VOUT 12V unless otherwise specified Parameter Mi...

Page 4: ...and turn off 2 Set the load less than 1A and disable 3 Connect the power supply to VIN and GND pins with a pair of wire 4 Connect the load to VOUT and VOUT pins with a pair of wire 5 Connect the voltm...

Page 5: ...GRT32EC81C476KE13L MURATA C9 Notinstalled C10 Notinstalled C11 100pF Capacitor Chip 250V C0G 2012 GRM21A5C2E101JW01 MURATA D1 1A 90V Diode Schottky 3516 RB160MM 90 ROHM D2 Vz 36 0 Diode Zener Vz 36 0...

Page 6: ...terial Board Size 4 FR 4 70mm x 50mm x 1 6mmt The following are layers of the BD7J200EFJ EVK 002 Figure 5 Top silk screen layout Top View Figure 6 Bottom silk screen layout Top View Figure 7 Top Layer...

Page 7: ...5 7 User s Guide BD7J200EFJ EVK 002 2021 ROHM Co Ltd No 63UG030E Rev 001 SEP 2021 Reference Application Data Figure 11 Power Conversion Efficiency vs Output Current Figure 12 Load Regulation...

Page 8: ...Ltd No 63UG030E Rev 001 SEP 2021 C11 mounting method There is no land pattern for C11 Figure 13 Top land pattern Top View C11 mounting position C11 is mounted on the lead terminals of U1_6pin PGND an...

Page 9: ...7 7 User s Guide BD7J200EFJ EVK 002 2021 ROHM Co Ltd No 63UG030E Rev 001 SEP 2021 Revision History Date Revision Number Description 9 Sep 2021 001 Initial release...

Page 10: ...hnical information The Products specified in this document are not designed to be radiation tolerant For use of our Products in applications requiring a high degree of reliability as exemplified below...

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