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Switching Regulator Series
Isolated Flyback DC/DC Converter
BD7F200EFJ-LB Evaluation Board
BD7F200EFJ-EVK-002 (24V→5V, 2A)
BD7F200EFJ-EVK-002 Evaluation board delivers an output 5 volts from an input 24 volts using BD7F200EFJ-LB, Isolated Flyback DC/DC
converter integrated circuit, with output current rating of maximum 2A.
Performance specification
These are representative values, and it is not a guaranteed against the characteristics.
V
= 24V, V
= 5V, Unless otherwise specified.
IN
OUT
Parameter
Input Voltage
Output Voltage
Output Current Range
Operating Frequency
Maximum Efficiency
Evaluation Board
PCB size: 70mm×50mm×1.6mm
PCB0135
24V→5V,2A
Figure 1. BD7F200EFJ-EVK-002 Evaluation Board
Top View
© 2018 ROHM Co., Ltd.
Min
Typ
24.0
5.0
35
400
80.6
BD7F200EFJ-EVK-002
1/5
User's Guide
Max
Units
V
R4=3.9kΩ, R5=80.6kΩ
V
2000
mA
Maximum Output Power：10W
kHz
%
I
= 1500mA
O
PCB0135
S/N 001
Figure 2. BD7F200EFJ-EVK-002 Evaluation Board
Bottom View
Conditions
No. 61UG013E Rev.002
NOV.2018
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Table of Contents
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Summary of Contents for Rohm BD7F200EFJ-LB
- Page 1 Isolated Flyback DC/DC Converter BD7F200EFJ-LB Evaluation Board BD7F200EFJ-EVK-002 (24V→5V, 2A) BD7F200EFJ-EVK-002 Evaluation board delivers an output 5 volts from an input 24 volts using BD7F200EFJ-LB, Isolated Flyback DC/DC converter integrated circuit, with output current rating of maximum 2A. Performance specification These are representative values, and it is not a guaranteed against the characteristics.
-
Page 2: Operation Procedures
(7) DC power-supply output is turned ON. (8) Check DC voltmeter 2 displays 5V. (9) The load is enabled. DC Voltmeter 1 DC Voltmeter 2 Load DC Power PCB0135 24V→5V,2A BD7F200EFJ-EVK-002 Figure 3. Connection Diagram © 2018 ROHM Co., Ltd. No. 61UG013E Rev.002 NOV.2018... -
Page 3: Circuit Diagram
Resistor, Chip, 2/5W, 1% 2012 ESR10EZPF1001 ROHM 330Ω Resistor, Chip, 1/10W, 1% 1608 MCR03EZPFX3300 ROHM 25μH CEP1311D-2405051R-10 sumida 13.5 x 20.0 x 12.5mm Transformer, Np:Ns=3:1, Lp=25μH±20% BD7F200EFJ I.C. BD7F200EFJ HTSOP-J8 BD7F200EFJ ROHM © 2018 ROHM Co., Ltd. No. 61UG013E Rev.002 NOV.2018... - Page 4 (Top View) Figure 7. Top Side Layout Figure 8. Middle Layer1 Layout (Top View) (Top View) Figure 9. Middle Layer2 Layout Figure 10. Bottom Side Layer Layout (Top View) (Top View) © 2018 ROHM Co., Ltd. No. 61UG013E Rev.002 NOV.2018...
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Page 5: Reference Application Data
BD7F200EFJ-EVK-002 User’s Guide Reference Application Data = 24V, V = 5V Figure 11. Efficiency vs Load Current Figure 12. Load Regulation © 2018 ROHM Co., Ltd. No. 61UG013E Rev.002 NOV.2018... - Page 6 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.
- Page 7 [8] Be sure to wear insulated gloves when handling is required during operation. After Use [9] The ROHM Evaluation Board contains the circuits which store the high voltage. Since it stores the charges even after the connected power circuits are cut, please discharge the electricity after using it, and please deal with it after confirming such electric discharge.
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