Isolation Fly-back Conveter PWM method
Output 24W 12V
BM2P10B1J-EVK-001
Notice
＜High Voltage Safety Precautions＞
◇ Read all safety precautions before use
Please note that this document covers only the BM2P10B1J evaluation board
(BM2P10B1J-EVK-001) and its functions. For additional information, please refer to the
datasheet.
To ensure safe operation, please carefully read all precautions before
handling the evaluation board
Depending on the configuration of the board and voltages used,
Potentially lethal voltages may be generated.
Therefore, please make sure to read and observe all safety precautions described in
the red box below.
Before Use
[1] Verify that the parts/components are not damaged or missing (i.e. due to the drops).
[2] Check that there are no conductive foreign objects on the board.
[3] Be careful when performing soldering on the module and/or evaluation board to ensure that solder
splash does not occur.
[4] Check that there is no condensation or water droplets on the circuit board.
During Use
[5] Be careful to not allow conductive objects to come into contact with the board.
[6] Brief accidental 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 the board.
In addition, as mentioned above please exercise extreme caution when using conductive tools such as
tweezers and screwdrivers.
[7] If used under conditions beyond its rated voltage, it may cause defects such as short-circuit or,
depending on the circumstances, explosion or other permanent damages.
[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.
[10] Protect against electric shocks by wearing insulated gloves when handling.
This evaluation board is intended for use only in research and development facilities and
should by handled only by qualified personnel familiar with all safety and operating
procedures.
We recommend carrying out operation in a safe environment that includes the use of high
voltage signage at all entrances, safety interlocks, and protective glasses.
www.rohm.com
© 2018 ROHM Co., Ltd. All rights reserved.
HVB01E
User’s Guide
AC/DC Converter
Flyback Type PWM Mode
Isolated 12 V 2.0 A 24 W
BM2P10B1J Evaluation Board
BM2P10B1J-EVK-001
General Description
This evaluation board outputs an isolated voltage of 12 V from an input of 90 Vac to 264 Vac, and the maximum output current is 2.0 A.
BM2P10B1J-Z which is PWM method DC/DC converter IC built-in 730 V MOSFET is used.
Built-in the low on resistor (1.0 Ω) and high voltage tolerant MOSFET (730 V) make designs easy.
PWM controller for AC / DC power supplies, the BM2P10B1J provides the optimum system for all products with outlets.
Figure 1. BM2P10B1J-EVK-001
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User’s Guide
BM2P10B1J-EVK-001
Performance Specification
Not guarantee the characteristics is representative value.
Unless otherwise specified VIN = 230 Vac , IOUT = 2.0 A , Ta = 25 °C
Parameter
Symbol
Min
Typ
Max
Units
Input Voltage Range
VIN
90
230
264
V
Input Frequency
fLINE
47
50/60
63
Hz
Output Voltage
VOUT
11.64
12.0
12.36
V
IOUT
0
-
2
A
POUT
-
-
24
W
IOUT = 2A
PINSTBY
-
80
-
mW
IOUT = 0 A
η
-
86.5
-
%
VRIPPLE
-
0.13
0.24
Vpp
Top
-10
+25
+65
°C
Output Current
Range (Note 1)
Maximum Output Power
Standby Input Power
Power supply efficiency
Output Ripple Voltage
(Note 1)
Oprating Temperature
Conditions
BW=20MHz
(Note 1) Not include spikes noise.
Derating
Figure 2. Temperature derating curve
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BM2P10B1J-EVK-001
Operation Procedure
1.
Operation Equipment
(1) AC power supply (90 Vac to 264 Vac, 100 W or more)
(2) Load equipment (2 A at maximum value)
(3) DC voltmeter
2.
Connect method
(1) Preset the AC power to 90 Vac to 264 Vac and turn off the power output.
(2) Set the load below the rated current of each output to disable the load.
(3) Connect the N pin of the power supply to the CN1-1: AC (N) pin and the L pin to the CN1-2: AC (L) pin with a pair of
wires.
(4) Connect each load to VOUT pin from the positive pin and to GND pin from the negative pin with a pair of wires.
(5) When connecting a power meter, connect as follows. (For details, refer to the User's Manual of the electricity meter
you are using.)
(6) Connect the positive pin of the DC voltmeter to VOUT pin and the negative pin to GND pin for output voltage
measurement.
(7) AC power supply switch is ON.
(8) Make sure that the DC voltmeter reading is at the set voltage (12 V).
(9) Electronic load switch is ON.
DC Meter
Load
CN1-1 AC (N) CN1-2 AC (L)
AC Power Supply
Power Meter
Figure 3. Diagram of How to Connect
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User’s Guide
BM2P10B1J-EVK-001
Application Circuit
This evaluation board operates in flyback mode at a maximum frequency of around 100 kHz.
The output (12 V) voltage is monitored by a feedback circuit and feed back to the FB pin of BM2P10B1J through a opto - coupler.
At startup, the voltage at the VCC pin rises as the voltage is supplied from the DRAIN pin to the VCC pin through the start circuit.
The demo board schematic is shown in Figure below and the list of parts is tabulated on page 13.
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User’s Guide
BM2P10B1J-EVK-001
BM2P10B1J General Description
Features
Key Specifications
◼ PWM Current Mode
◼
Operating Power Supply Voltage Range :
◼ Frequency Hopping Function
VCC Pin : 8.9 V to 26.0 V
◼ Burst Operation at Light Load
DRAIN Pin : 730 V (Max)
◼ Frequency Reduction Function
◼
Circuit Current (ON) 1:
◼ Built-in 730 V Startup Circuit
BM2P10x1J-Z: 0.90 mA (Typ)
◼ Built-in 730 V Switching MOSFET
BM2P10x3J-Z: 0.65 mA (Typ)
◼ VCC UVLO (Under Voltage Lockout)
◼
Circuit Current (ON) 2:
0.30 mA (Typ)
◼ VCC OVP (Over Voltage Protection)
◼
Frequency Range 1:
100 kHz (Typ)
◼ SOURCE Pin Open Protection
◼
Operating Temperature Range :
◼ SOURCE Pin Function of Leading Edge Blanking
◼
MOSFET ON Resistance:
-40 °C to +105 °C
◼ Over Current Detection Function per Cycle
BM2P10x1J-Z:
1.0 Ω (Typ)
◼ Over Current Detection AC Compensation Function
BM2P10x3J-Z:
3.0 Ω (Typ)
◼ Soft Start Function
◼ Secondary Over Current Protection Circuit
Package
W (Typ) x D (Typ) x H (Max)
DIP7K
9.27 mm x 6.35 mm x 8.63 mm
pitch 2.54 mm
Pin Configuration
(TOP VIEW)
1
7
DRAIN
BR
2
6
DRAIN
GND
3
FB
4
SOURCE
Applications
AC Adapter, TV, Various Home Appliances (Vacuum
Cleaner, Humidifier, Air purifier, Air Conditioner, IH
5
VCC
Cooking Heater, Rice Cooker, etc.)
Figure 4. Pin Configuration
Pin Descriptions
No.
Pin name
I/O
Function
1
SOURCE
I/O
MOSFET SOURCE pin
2
BR
I
BROWNOUT pin
3
GND
I/O
GND pin
4
FB
I/O
Feedback-signal-in pin
5
VCC
I
Power supply input pin
6
DRAIN
I/O
MOSFET DRAIN pin
7
DRAIN
I/O
MOSFET DRAIN pin
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User’s Guide
BM2P10B1J-EVK-001
Measurement Data
1.
Load Regulation
100
12.6
VOUT2, IOUT2 = 0 A
90
Efficiency (%)
VOUT (V)
12.4
12.2
12
90 V
115 V
230 V
264 V
VOUT1
11.8
11.6
11.4
0
0.5
1
1.5
2
80
70
90 V
115 V
230 V
264 V
60
50
40
0
2.5
1
1.5
2
2.5
Figure 6. Efficiency vs Output Current
Figure 5. Output Voltage vs Output Current
Line Regulation
12.6
100
12.4
95
Efficiency (%)
VOUT (V)
2.
0.5
IOUT(A)
IOUT(A)
12.2
12.0
11.8
11.6
90
85
80
0.5A
1A
1.5A
2A
75
Io=2A
70
11.4
90
140
190
240
80
290
280
Figure 8. Efficiency vs Input Voltage
Figure 7. Output Voltage vs Input Voltage
© 2022 ROHM Co., Ltd.
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VIN(V)
VIN(V)
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Measurement Data – continued
Switching Frequency
Switching Frequency (kHz)
3.
100
90
80
70
60
50
40
30
20
10
0
0.00
90V
115V
230V
264V
0.50
1.00
1.50
2.00
2.50
IOUT(A)
Figure 9. Frequency vs Output Power
4.
Input Voltage Slowup
Input Voltage VIN
100 V / Div
Output Voltage Vout 5 V / Div
Figure 10. VIN 0 V to 230 V
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BM2P10B1J-EVK-001
Measurement Data – continued
5.
Switching Wave Form
MOSFET VDS 100V / Div
MOSFET VDS 100 V / Div
DRAIN Current ID 0.5 A / Div
DRAIN Current ID 0.5 A / Div
Figure 11. VDS, ID VIN = 90 Vac, IOUT= 2 A
Figure 12. VDS, ID VIN = 264 Vac, IOUT= 2 A
Diode Voltage VD 20 V / Div
Diode Voltage VD 20 V / Div
Diode Current IS 2 A / Div
Diode Current IS 2 A / Div
Figure 13. VD, IS VIN = 90 Vac, IOUT= 2 A
© 2022 ROHM Co., Ltd.
Figure 14. VD, IS VIN = 264 Vac, IOUT= 2 A
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BM2P10B1J-EVK-001
Measurement Data – continued
5.
Switching Wave Form- continued
Diode Voltage VD 20 V / Div
MOSFET VDS 100 V / Div
DRAIN Current ID 0.5 A / Div
Diode Current IS 2 A / Div
Figure 15. VDS, ID VIN = 264 Vac, VOUT Shorted
6.
Figure 16. VD, IS VIN = 264 Vac, VOUT Shorted
Startup Wave Form
Output Voltage VOUT 2 V / Div
Output Voltage VOUT2 V / Div
Input Voltage VIN 250 V / Div
Input Voltage VIN 250 V / Div
Figure 17. VIN = 90 Vac, IOUT = 2A
© 2022 ROHM Co., Ltd.
Figure 18. VIN = 264 Vac, IOUT = 2A
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BM2P10B1J-EVK-001
Measurement Data – continued
7.
Dynamic Load Fluctuation
VOUT 0.2 V / Div
VOUT 0.2 V / Div
IOUT 1 A / Div
IOUT 1 A / Div
Figure 20. VIN = 264 Vac, IOUT = switch 0.06 A / 2 A
Figure 19. VIN = 90 Vac, IOUT = switch 0.06 A / 2 A
8.
Output Voltage Ripple Wave Form
0.2 V / Div
Output Ripple Voltage VRIPPLE2
= 0.10 Vpp
Output Ripple Voltage
VRIPPLE 0.2 V /Div
Output Ripple Voltage VRIPPLE 0.2 V /Div
Figure 21. VIN = 90 Vac, IOUT = 2 A
9.
Figure 22. VIN = 264 Vac, IOUT = 2 A
Temperature of Parts Surface IOUT1
They are measured after 20 minutes from applying a power supply.
Table 1. Surface Temperature of Parts (Ta = 29 °C)
Part
IC1
Bridge Diode DB1
© 2022 ROHM Co., Ltd.
Condition
VIN = 90 Vac, IOUT1 = 2 A
VIN = 264 Vac, IOUT1 = 2 A
77.8 °C
78.1 °C
10/16
78.6 °C
54.9 °C
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BM2P10B1J-EVK-001
Measurement Data – continued
10. EMI Conducted Emission:CISPR22 Pub 22 Class B
QP margin: 17.2dB
AVE margin: 11.9dB
Figure 23. VIN: 230 Vac / 50 Hz, IOUT: 2 A
QP margin: 12.0dB
AVE margin: 10.7dB
Figure 24. VIN: 115 Vac / 60 Hz, IOUT: 2 A
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User’s Guide
BM2P10B1J-EVK-001
Schematics
VIN = 90 Vac to 264 Vac、VOUT = 12 V 2 A
Figure 25. BM2P10B1J-EVK-001 Schematics
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User’s Guide
BM2P10B1J-EVK-001
Parts List
Item
Specifications
Parts name
Manufacture
C1
0.1 µF, 275 V
890324023023CS
WURTH ELECTRONIK
C2
C5
Non Mounted
-
-
47 µF, 450 V
450BXW47MEFR16X25
RUBYCON
C6
2200 pF, 1000 V
GCJ31BR73A222KXJ1K
MURATA
C7
C8
22 pF, 1000 V
1000 pF, 100 V
RCE5C3A220J2K1H03B
HMK107B7102KA-T
MURATA
TAIYO YUDEN
C9
1000 pF, 100 V
HMK107B7102KA-T
TAIYO YUDEN
C10
C11
10 µF, 35 V
2200 pF, X1:440 Vac, Y1:300 Vac
GMK316AB7106KL-TR
DE1E3RA222MA4BP01F
TAIYO YUDEN
MURATA
C13
1000 µF, 25 V
UPA1E102MPD3
NICHICON
C14
C15
1000 µF, 25 V
0.1 µF, 100 V
UPA1E102MPD3
HMK107B7104KA-T
NICHICON
TAIYO YUDEN
C16
0.1 µF, 100 V
680 pF, 1000 V
HMK107B7104KA-T
GRM31B7U3A681JW31
TAIYO YUDEN
MURATA
C17
CN1
B2P3-VH
JST
RFN1LAM7S
ROHM
D2
FRD, 0.8 A, 700 V
0.2 A, 400 V
RRE02VSM4S
ROHM
D3
SBD, 10 A, 150 V
RB088BGE150
ROHM
D4
DB1
Non Mounted
1 A, 800 V
D1UBA80
SHINDENGEN
F1
GND
1.6 A, 300 V
BLACK
36911600000_
LC-2-G-BLACK
LITTELFUSE
MAC8
IC1
BM2P10B1J-Z
ROHM
IC2
TL431BIDBZT
SSR10VS07265
TI
LTV-817-B
LITEON
D1
LF1
26.5 mH
PC1
TOKIN
R1
R2
Non Mounted
Non Mounted
-
-
R3
Non Mounted
R4
0.62 Ω
LTR100JZPFLR620
ROHM
R5
5.6 Ω
MCR18EZPJ5R6
ROHM
R6
R7
0Ω
100 kΩ
MCR18EZPJ000
MOS2CT52R104J
ROHM
KOA
R10
33 kΩ
MCR03EZPFX3302
ROHM
R11
R12
5.6 kΩ
10 kΩ
MCR03EZPFX5601
MCR03EZPFX1002
ROHM
ROHM
R13
R14
2.2 kΩ
1 kΩ
MCR03EZPJ222
MCR03EZPJ102
ROHM
ROHM
R15
27 kΩ
MCR03EZPJ273
ROHM
R16
R17
1.2 MΩ
1 MΩ
KTR18EZPJ125
KTR18EZPJ105
ROHM
ROHM
R18
20 kΩ
MCR03EZPJ203
ROHM
R19
T1
10 Ω
EE25-20
ESR18EZPJ100
XE2674Y A
ROHM
ALPHA TRANS
VOUT
WHITE
LC-2-G-WHITE
MAC8
ZNR1
470 V, 400 A, φ 5 mm
V470ZA05P
LITTELFUSE
Materials may be changed without notifying.
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User’s Guide
BM2P10B1J-EVK-001
Layout
Size: 101 mm x 55 mm
Figure 26. TOP Layout (Top view)
Figure 27. Bottom Layout (Top View)
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BM2P10B1J-EVK-001
Specification of the Transformer
Manufacture
Alphatrans Co., Ltd. (1-7-2, Bakurou-cho, Chuo-ku, Osaka City, 541-0059, Japan)
http://www.alphatrans.jp/
◼
Product Name:
XE2674Y A
Bobbin:
10PIN
Core:
EE25/20
311.5 μH ±10 %
Primary Inductance:
(100 kHz, 1 V)
◼
Withstand Voltage
Between Primary and Secondary:
AC1500 V
Between Primary and Core:
AC1500 V
Between Secondary and Core:
■
Insulation Resistance
AC500 V
100 MΩ or more (DC500 V)
Figure 28. Circuit Diagram
Figure 29. Structure Diagram
Table 2. Product Specification of XE2674Y A
Winding Pin
Wire
Turn
Number
Tape
Layer
Wire
Specification
2
2UEW / Φ0.32 x 1
25
1
COMPACT
9
7
TEX-E / Φ0.60 x 1
8
1
COMPACT
ND
4
5
2UEW / Φ0.20 x 1
10
1
SPACE
4
NS2
8
6
TEX-E / Φ0.60 x 1
8
1
COMPACT
5
NP2
2
1
2UEW / Φ0.32 x 1
25
3
COMPACT
No.
Transformer
1
Start
Finish
NP1
3
2
NS1
3
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User’s Guide
BM2P10B1J-EVK-001
Revision History
Date
Rev.
Changes
16.Jan.2023
001
New Release
22.May.2023
002
P3 Connect method (4) revised, P15 Table 2 Tape Layer revised, P11 Figure24 title revised
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MAY.2023
Notice
Notice
1) The information contained in this document is intended to introduce ROHM Group (hereafter
referred to asROHM) products. When using ROHM products, please verify the latest specifications
or datasheets before use.
2) ROHM products are designed and manufactured for use in general electronic equipment and
applications (such as Audio Visual equipment, Office Automation equipment, telecommunication
equipment, home appliances, amusement devices, etc.) or specified in the datasheets. Therefore,
please contact the ROHM sales representative before using ROHM products in equipment or
devices requiring extremely high reliability and whose failure or malfunction may cause danger or
injury to human life or body or other serious damage (such as medical equipment, transportation,
traffic, aircraft, spacecraft, nuclear power controllers, fuel control, automotive equipment including
car accessories, etc. hereafter referred to as Specific Applications). Unless otherwise agreed in
writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages,
expenses, or losses incurred by you or third parties arising from the use of ROHM Products for
Specific Applications.
3) Electronic components, including semiconductors, can fail or malfunction at a certain rate. Please
be sure to implement, at your own responsibilities, adequate safety measures including but not
limited to fail-safe design against physical injury, and damage to any property, which a failure or
malfunction of products may cause.
4) The information contained in this document, including application circuit examples and their
constants, is intended to explain the standard operation and usage of ROHM products, and is not
intended to guarantee, either explicitly or implicitly, the operation of the product in the actual
equipment it will be used. As a result, you are solely responsible for it, and you must exercise your
own independent verification and judgment in the use of such information contained in this
document. ROHM shall not be in any way responsible or liable for any damages, expenses, or
losses incurred by you or third parties arising from the use of such information.
5) When exporting ROHM products or technologies described in this document to other countries, you
must abide by the procedures and provisions stipulated in all applicable export laws and regulations,
such as the Foreign Exchange and Foreign Trade Act and the US Expor t Administration
Regulations, and follow the necessary procedures in accordance with these provisions.
6) The technical information and data described in this document, including typical application circuits,
are examples only and are not intended to guarantee to be free from infringement of third parties
intellectual property or other rights. ROHM does not grant any license, express or implied, to
implement, use, or exploit any intellectual property or other rights owned or controlled by ROHM or
any third parties with respect to the information contained herein.
7) No part of this document may be reprinted or reproduced in any form by any means without the
prior written consent of ROHM.
8) All information contained in this document is current as of the date of publication and subject to
change without notice. Before purchasing or using ROHM products, please confirm the latest
information with the ROHM sales representative.
9) ROHM does not warrant that the information contained herein is error-free. ROHM shall not be in
any way responsible or liable for any damages, expenses, or losses incurred by you or third parties
resulting from errors contained in this document.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
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https://www.rohm.com/contactus
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