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ROHM  Customer Support System 

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Thank you for your accessing to ROHM product informations.  
More detail product informations and catalogs are available, please contact us. 

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The information contained herein is subject to change without notice. 

Before you use our Products, please contact our sales representative

 

and verify the latest specifica-

tions :

Although ROHM is continuously working to improve product reliability and quality, semicon-
ductors can break down and malfunction due to various factors.
Therefore, in order to prevent personal injury or fire arising from failure, please take safety 
measures such as complying with the derating characteristics, implementing redundant and 
fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no 
responsibility for any damages arising out of the use of our Poducts beyond the rating specified by 
ROHM.

Examples of application circuits, circuit constants and any other information contained herein are 
provided only to illustrate the standard usage and operations of the Products. The peripheral 
conditions must be taken into account when designing circuits for mass production.

The technical information specified herein is intended only to show the typical functions of and 
examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, 
any license to use or exercise intellectual property or other rights held by ROHM or any other 
parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of 
such technical 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), please contact and consult with a ROHM representative : transportation equipment (i.e. 
cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety 
equipment, medical systems, servers, solar cells, and power transmission systems.

Do not use our Products in applications requiring extremely high reliability, such as aerospace 
equipment, nuclear power control systems, and submarine repeaters.

ROHM shall have no responsibility for any damages or injury arising  from non-compliance with 
the recommended usage conditions and specifications contained herein.

ROHM has used reasonable care to ensur

H

 the accuracy of the information contained  in this 

document. However, ROHM does not warrants that such information is error-free, and ROHM 
shall have no responsibility for any damages arising from any inaccuracy or misprint of such 
information.

Please use the Products in accordance with any applicable environmental laws and regulations, 
such as the RoHS Directive. For more details, including RoHS compatibility, please contact a 
ROHM sales office. ROHM shall have  no responsibility for any damages or losses resulting 
non-compliance with any applicable laws or regulations.

When providing our Products and technologies contained in this document to other countries,  
you must abide by the procedures and provisions stipulated in all applicable export laws and 
regulations, including without limitation the US Export Administration Regulations and the Foreign 
Exchange and Foreign Trade Act.

This document, in part or in whole, may not be reprinted or reproduced without prior consent of 
ROHM.

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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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