Rohm BD7693FJ-EVK-002 User manual

Flyback Type High Power Factor
AC/DC Converter
Isolated 35 V 1.2 A
(BD7693FJ Evaluation Board)

Notice
www.rohm.com HVB01E
© 2018 ROHM Co., Ltd. All rights reserved.
＜
High Voltage Safety Precautions
＞
◇
Read all safety precautions before use
Please note that this document covers only the BD7693FJ evaluation board
(BD7693FJ-EVK-002) 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.

1/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
Figure 1. BD7693FJ-EVK-002
AC/DC Converter
Flyback Type High Power Factor
AC/DC Converter
Isolated 35 V 1.2 A
BD7693FJ Evaluation Board
BD7693FJ-EVK-002
General Description
This evaluation board can output a voltage of 35 V isolated from an input of 90 Vac to 264 Vac, and the maximum output current is 1.2 A.
The one-converter flyback type achieves a high power factor (PF > 0.9).
The control IC uses BD7693FJ,which use the critical mode.
Switching loss and noise are reduced by zero current detection.
A circuit that lowers total harmonic distortion (THD) us used to support IEC610003-2 Class C and Class D.

2/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 2. Temperature derating curve
Performance Specification
Not guarantee the characteristics is representative value.
Unless otherwise specified V
IN
= 230 Vac , I
OUT
= 1.2 A Ta = 25 °C
Parameter Min Typ Max Units Conditions
Input Voltage Range V
IN
90 230 264 Vac
Input Frequency f
LINE
47 50/60 63 Hz
Output Voltage V
OUT
33.25 35.0 36.75 V
Output Current Range
(Note1
I
OUT
0.06 - 1.2 A
Maximum Output Power
(Note1
P
OUT
0.0 - 42 W
Total Harmonic Distortion (THD) THD 7.5 10 %
Power Factor (PF) PF 0.90 0.93 - -
Efficiency η 88.0 91.5 - %
Output Ripple Voltage
(Note 2)
V
RIPPLE
- 1.0 1.75 Vpp
Operating Temperature Range T
Opr
-10 +25 +60 °C
(Note 1) Adjust the load application time so that the component surface temperature does not exceed 105 °C.
(Note 2) Not include spikes noise.
Derating

3/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 3. Diagram of How to Connect
Operation Procedure
1. Necessary 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
(4) Power meter
2. Connect to Each Equipment
(1) AC power supply presetting range 90 Vac to 264 Vac, Output switch is OFF.
(2) Electronic load setting under 1.2 A, Load switch is OFF.
(3) The reference board connects to measuring equipments and power supplies as in Figure.3.
(4) AC power supply switch is ON.
(5) Check that output voltage is 35 V.
(6) Electronic load switch is ON.
CN1-2 AC (L)
CN1-2 AC (N)
35
Ｖ

4/16
© 2022 ROHM Co., Ltd. No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 4. BD7693FJ-EVK-002 Schematics
Application Circuit
This evaluation board is a one-converter flyback type high power factor ACDC converter.
Operates in critical mode.
The output (35 V) voltage is monitored by a feedback circuit and fed back to the EO pin of BD7693FJ through a opto-coupler.
At startup, the voltage from the emitter pin of Q2 to the VCC pin is supplied through the startup circuit, and the voltage at the VCC pin
rises.
When the VCC pin voltage exceeds the UVLO release voltage of 13.0 V (Typ), the BD7693FJ will start operating.
The voltage divided by the resistors R6 and R7 from the VCC voltage is applied to the VS pin.
When the VS pin voltage exceeds the VS short protection voltage VSHORT 0.30 V (Typ), BD7693FJ starts switching.
When the output voltage rises, the VCC voltage is raised from the auxiliary winding of the transformer via R8 and D3 to turn off the
starting transistor Q2.
The demo board schematic is shown in the figure below, and the list of parts is shown on page 13.

5/16
© 2022 ROHM Co., Ltd. No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
BD7693FJ Overview
Feature
 Boundary Conduction Mode PFC
 Low THD Circuit Incorparation
 VCC Under Voltage Lock Out Function
 ZCD by Auxiliary Winding
 Static OVP by The VS Pin
 Error Amplifier Input Short Protection
 Stable MOSFET Gate Driving
 Soft Start Function
Key Specification
 Operating Power Supply Voltage Range 10.0 V to 38.0 V
 Circuit Current 0.58 mA ( Typ.)

Operating Temperature Range -40 °C to +105 °C
Package W(Typ) x D(Typ) x H(Max)
SOP-J8 4.90 mm x 6.00 mm x 1.65 mm
Pitch 1.27 mm
Table 1. BD7693FJ PIN description
Pin No. Pin Name I/O Function ESD Diode
VCC GND
1 VS I Feedback input pin - ○
2 EO O Error amp output pin - ○
3 MULT I Multiplier input pin - ○
4 CS I Over current protection pin - ○
5 ZCD I Zero current detection pin - ○
6 GND - GND pin ○ -
7 OUT O External MOSFET driver pin - ○
8 VCC I Power supply pin - ○
Figure 5. Block Diagram

6/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 8. Output Voltage vs Input Voltage Figure 9. Efficiency vs Input Voltage
Figure 6. Output Voltage vs Output Current Figure 7. Efficiency vs Output Current
Measurement Data
1. Load Regulation
2. Line Regulation

7/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 10. PF vs Input Voltage
Figure 11. THD vs Input Voltage
Measurement Data – continued
3. PF (Power Factor)
4. Total Harmonic Distortion of input current

8/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 12. Harmonic current V
IN
= 100 Vac, I
OUT
= 1.2 A Figure 13. Harmonic current V
IN
= 230 Vac, I
OUT
= 1.2 A
Figure 14. Harmonic current V
IN
= 100 Vac, I
OUT
= 1.2 A Figure 15. Harmonic current V
IN
= 230 Vac, I
OUT
= 1.2 A
Measurement Data – continued
5. Harmonic current

9/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 16. Input Voltage、Input Current V
IN
= 90 Vac
100 V / Div
I
IN
0.2 A / Div
Figure 17. Input Voltage、Input Current V
IN
= 264 Vac
Figure 18. V
IN
= 90 Vac, I
OUT
= 1.2 A Figure 19. V
IN
= 264 Vac, I
OUT
= 1.2 A
Measurement Data – continued
6. Input waveform
7. Startup Wave Form
1 A / Div
Input Current Iin
Input Voltage V
IN
500 V / Div
1 A/ Div
Output Voltage V
OUT
10 V / Div
500 V / Div
Input Voltage V
IN
Output Voltage V
OUT
10 V / Div
0.5 A / Div
I
IN
V
IN
V
IN
Input Current Iin
100 V / Div

10/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Output Ripple Voltage V
RIPPLE
= 1.0Vpp
Table 2. Surface Temperature of Parts (Ta = 22 °C)
Figure 20. V
IN
= 90 Vac, I
OUT
= 1.2 A Figure 21. V
IN
= 264 Vac, I
OUT
= 1.2 A
Measurement Data – continued
8. Output Voltage Ripple Wave Form
9. Temperature of Parts Surface
They are measured after 15 minutes from applying a power supply.
Part Condition
V
IN
= 90 Vac, I
OUT
= 1.2 A V
IN
= 264 Vac, I
OUT
= 1.2 A
Q1 57.1 °C 48.5 °C
BR1 64.0 °C 43.6 °C
V
OUT
0.5 V / Div
V
OUT
0.5 V / Div
Output Ripple Voltage V
RIPPLE
= 1.0Vpp
Output Ripple Voltage V
RIPPLE
= 1.0Vpp

11/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 22. V
IN
: 115 Vac / 60 Hz, I
OUT
: 1.2 A
Figure 23. V
IN
: 230 Vac / 50 Hz, I
OUT
: 1.2 A
Measurement Data – continued
10. EMI Conducted Emission : CISPR22 Pub 22 Class B
QP margin: 10.1dB
AVE margin: 12.0dB
QP margin: 8.7dB
AVE margin: 15.1dB

12/16
© 2022 ROHM Co., Ltd. No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 24. BD7693FJ-EVK-002 Schematics
Schematics
VIN = 90 Vac to 264 Vac、VOUT = 35 V 1.2 A

13/16
© 2022 ROHM Co., Ltd. No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Parts List
Materials may be changed without notifying.
Item
Specification
Parts Name
Manufacurer
C1
0.22 µF, 310 Vac
890334023027
WURTH ELECTRONIK
C2
470 nF, 310 Vac
890334025039CS
WURTH ELECTRONIK
C4
0.1 µF, 630 Vdc
890303425004CS
WURTH ELECTRONIK
C5
22 nF, 630 V
88534220814
WURTH ELECTRONIK
C6
10 µF, 50 V
860130673001
WURTH ELECTRONIK
C7
1000 pF, 100 V
HMK107B7102KA-T
TAIYO YUDEN
C8,C21,C23,C25
0.1 µF, 100 V
HMK107B7104KA-T
TAIYO YUDEN
C9,C15
2.2uF,２５V
GRM188R61E225KA12D
MURATA
C10,C14,C17,C18,C19,C22,C24
ー
Non-Mounted
C11
22 pF,1 kV
885342008008
WURTH ELECTRONIK
C12,C13
2200 μF, 50 V
860010680028
WURTH ELECTRONIK
C16
2200 pF, Y1:300 Vac
DE1E3RA222MA4BP01F
MURATA
C20
680 pF, 250 V
GRM31BR7U3A681JW31
MURATA
CN1
-
B02P-NV
JST
D1
1.0 A,800 V
SARS05
SANKEN
D2,D3
FRD, 0.5 A, 200 V
RF05VAM2STR
ROHM
D4
-
Non-Mounted
D5
SBD, 10 A, 150 V
RB088T150NZ
ROHM
BR1
2 A, 600V
D2SBA60
SHINDENGEN
F1
1.6 A, 300 V
36911600000_
LITTELFUSE
FL1,FL2
47.5 mH,0.6 A
SSR10V-06475
TOKIN
HS1
22.9 k/W
IC-1625-STL
SANKYO THRMOTECH
HS2
32.7 k/W
OSH-1525-SFL
SANKYO THRMOTECH
IC1
BD7693FJ
ROHM
IC2
TL431BIDBZT
TI
PC1
LTV-817-B
LITEON
Q1
800 V, 9 A
R8009KNX
ROHM
Q2
400 V,0.1 A
2SCR346PT100Q
ROHM
R1,R2
680 kΩ
KTR18EZPJ684
ROHM
R3
7.5 kΩ
MCR03EZPJ752
ROHM
R4
3.3 kΩ
ESR18EZPJ332
ROHM
R5,R27
560 kΩ
ESR18EZPJ564
ROHM
R6
15 kΩ
MCR03EZPF1502
ROHM
R7
2 kΩ
MCR03EZPFX2001
ROHM
R8,R11
10 Ω
ESR18EZPJ100
ROHM
R9
33 kΩ
ESR18EZPJ333
ROHM
R10
68 kΩ
MCR03EZPJ683
ROHM
R15,R18,R29,R30
-
Non-Mounted
R12
220 Ω
MCR10EZPJ221
ROHM
R13
15 kΩ
MCR03EZPJ153
ROHM
R14
0.39 Ω
LTR18EZPFLR390
ROHM
R16
560 Ω
ESR18EZPJ561
ROHM
R17
100 kΩ
MOS2CT52R104J
KOA
R19
20 kΩ
MCR03EZPJ203
ROHM
R20
1 kΩ
MCR03EZPJ102
ROHM
R21
3.3 kΩ
MCR03EZPJ332
ROHM
R22
4.7 kΩ
MCR03EZPFX4701
ROHM
R23
68 kΩ
MCR03EZPFX6802
ROHM
R24
5.6 kΩ
MCR03EZPFX5601
ROHM
R25
12 Ω
ESR18EZPJ120
ROHM
R26
5.6 Ω
ESR18EZPJ5R6
ROHM
R28
1 kΩ
MCR03EZPFX1001
ROHM
R31,R32
0 Ω
MCR03EZPZJ000
ROHM
R33
4.7 kΩ
MCR03EZPJ472
ROHM
T1
XE2620Y A
ALPHA
TP1,TP2
CD-10-15
MAC8
ZD1
Zener Diode, 16 V
UDZVTE-1716B
ROHM
ZD2
Zener Diode, 24 V
UDZVTE-1724B
ROHM
L2
Jumper
P-43MC 3×8
YAWATANEJI
P-43MC 3×8
YAWATANEJI
PCB
PCB0236D

14/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 25. TOP Silkscreen (Top view)
Figure 26. Bottom Layout (Top View)
Layout
Size: 160 mm x 55 mm

15/16
© 2022 ROHM Co., Ltd.
No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Figure 27. Circuit Diagram
Table 3. Product Specification of XE2620Y
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: XE2620Y
Bobbin: 12PIN
Core: PQ26
 Primary Inductance: 650 μH ±10 %
(100 kHz, 1 V)
 Withstand Voltage
Between Primary and Secondary: AC1500 V
Between Primary and Core: AC1500 V
Between Secondary and Core: AC500 V
■ Insulation Resistance 100 MΩ or more (DC500 V)
No. Transformer
Winding Pin
Wire Turn
Number
Tape
Layer
Wire
Specification
Start Finish
1 NP1 3 2 2UEW / Φ0.35 x 1 26 1 COMPACT
2 NS1 11 9 2UEW / Φ0.40 x 2 10 1 COMPACT
3 ND 4 5 2UEW / Φ0.20 x 1 6 1 COMPACT
4 NS1 10 7 2UEW / Φ0.40 x 2 10 1 COMPACT
5 NP2 2 1 2UEW / Φ0.35 x 1 26 2 COMPACT

16/16
© 2022 ROHM Co., Ltd. No. 64UG141E Rev.001
APR.2022
User’s Guide
BD7693FJ-EVK-002
Revision History
Date Rev. Changes
18.April.2022 001 New Release

R1102 B
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
Notice
ROHM Customer Support System
http://www.rohm.com/contact/
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
Notes
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 ensurethe 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.
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)

Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
ROHM Semiconductor:
BD7693FJ-EVK-002