User's Guide AC/DC Converter Non-Isolation Buck Converter PWM method Output 2W -12V BM2P129TF Reference Board BM2P129TF-EVK-002 The BM2P129TF-EVK-002 evaluation board outputs -12V minus voltage from the input of 90Vac to 264Vac. The output current supplies up to 0.167A. BM2P109TF which is PWM method DC/DC converter IC built-in 650V MOSFET is used. The BM2P129TF contributes to low power consumption by built-in a 650 V starting circuit. Built-in current detection resistor realizes compact power supply design. Current mode control imposes current limitation on every cycle, providing superior performance in bandwidth and transient response. The switching frequency is 100 kHz in fixed mode. At light load, frequency is reduced and high efficiency is realized. Built-in frequency hopping function contributes to low EMI. Low on-resistance 9.5 650 V MOSFET built-in contributes to low power consumption and easy design. The flywheel diode is a fast recovery diode of 1A/650 V RFN1LAM6S, contributing to low power consumption. Electronics Characteristics Not guarantee the characteristics, is representative value. Unless otherwise noted :VIN = 230Vac, IOUT = 120mA, Ta:25 Parameter Min Typ Max Units Input Voltage Range 90 230 264 Vac Input Frequency 47 50/60 63 Hz -13.2 -12.0 10.8 V - - 2.0 W 2 120 167 mA Stand-by Power - 44 - mW Efficiency - 72.2 - % - 29 - mVpp -10 25 65 Output Voltage Maximum Output Power Output Current Range (NOTE1) Output Ripple Voltage (NOTE2) Operating Temperature Range Conditions IOUT = 167mA IOUT = 0A (NOTE1) Please adjust operating time, within any parts surface temperature under 105 (NOTE2) Not include spike noise (c) 2018 ROHM Co., Ltd. 1/8 No. 60UG070E Rev.001 2018.3 BM2P129TF-EVK-002 User's Guide Operation Procedure 1. Operation Equipment (1) AC Power supply 90Vac264Vac, over 10W (2) Electronic Load capacity 0.167A (3) Multi meter 2. Connect method (1) AC power supply presetting range 90~264Vac, Output switch is off. (2) Load setting under 0.167A. Load switch is off. (3) AC power supply N terminal connect to the board AC (N) of CN1, and L terminal connect to AC(L). (4) Load + terminal connect to VOUT1, GND terminal connect to GND1 terminal (5) AC power meter connect between AC power supply and board. (6) Output test equipment connects to output terminal (7) AC power supply switch ON. (8) Check that output voltage is -12V. (9) Electronic load switch ON (10) Check output voltage drop by load connect wire resistance AC Power Supply + Power Electronic V Meter Load - CN1 : from the top :AC (L), :AC (N) Multi Meter Figure 1. Connection Circuit Deleting Maximum Output Power Po of this reference board is 2W. The derating curve is shown on the right. if ambient temperature is over 50, please adjust load continuous time by over 105 of any parts surface temperature. Output Power Po [W] 2.5 2.0 1.5 1.0 0.5 0.0 -25 0 25 50 75 100 Ambient Temparature Ta [] Figure 2. Temperature Deleting curve (c) 2018 ROHM Co., Ltd. 2/8 No. 60UG070E Rev.001 2018.3 BM2P129TF-EVK-002 User's Guide Schematics VIN = 90264Vac, VOUT = -12V D3 0.2A/600V RRE02VS M6S C3 D2 1F 25V CN1_1 L F1 D1 1.0A/AC250V 1A/1000V C1 AC90-264V L1 470H C2 0.1F X2 1 VCC N.C. 2 N.C GND_IC 3 N.C. N.C. 4 DRAIN N.C. IC1 BM2P129TF 12F 400V CN1_2 FRD 0.8A/600V RFN1LAM6S 8 7 6 5 L2 220H 1.2A GND N R1 47 2W C4 220F 25V C5 R2 0.1F 25V 10K MCR10 -12V/0.167A VOUT Figure 3. BM2P129TF-EVK-002 Schematics Bill of Materials Table 1. BoM of BM2P129TF-EVK-002 Part Reference C1 C2 C3 C4 C5 CN1 D1 D2 D3 F1 IC1 L1 L2 R1 R2 Qty. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Type Film Electrolytic Ceramic Electrolytic Ceramic Connector FRD FRD Diode Fuse AC/DC Converter Coil Coil Resistor Resistor (c) 2018 ROHM Co., Ltd. Value 0.1F 12F 1uF 220uF 0.1uF 1A 0.8A 0.2A 1A 470H 220H 47 10k Description X2 400V, 20% 25V, X7R, 20% 25VV, 20% 50V, X7R, 20% 2pin 1000V 600V 600V 250V 0.25A 1.2A 2W, 5% 0.1W, 5% Part Number 890 334 025 017 CS 400BXW12MEFR10X16 TMK107B7105MA-T 860 080 474 010 HMK107B7104MA-T B2P-VH 1N4007-GP RFN1LAM6S TR RRE02VSM6S 39211000000 BM2P129TF DRV060-471 744 747 122 1 ERG-2SJ470 MCR10EZPJ103 3/8 Manufacture Wurth Rubycon Taiyo Yuden Wurth Taiyo Yuden JST Vishay ROHM ROHM Littelfuse ROHM Alphatrans Wurth Panasonic ROHM Configuration mm (inch) 1608 (0603) 1608 (0603) PMDS TUMD2SM SOP8 2012 (0805) No. 60UG070E Rev.001 2018.3 BM2P129TF-EVK-002 User's Guide PCB Size : 25 mm x 45 mm Figure 4. Top Silkscreen (Top view) Figure 5. Bottom Layout (Top view) (c) 2018 ROHM Co., Ltd. 4/8 No. 60UG070E Rev.001 2018.3 BM2P129TF-EVK-002 User's Guide Performance Data -10.8 100 90 VIN=100Vac 80 VIN=100Vac -11.6 VIN=230Vac -12.0 Efficiency [%] Output Voltage [V] -11.2 -12.4 70 VIN=230Vac 60 50 40 30 20 -12.8 10 -13.2 0 0 100 200 300 0 50 Output Current [mA] 0.50 0.9 0.45 VIN=230Vac 0.6 VIN=100Vac 0.4 0.35 0.30 0.25 0.20 0.3 0.15 0.2 0.10 0.1 0.05 0.0 0.00 50 100 150 VIN=230Vac 0.40 Power Loss [W] Power Loss [W] 0.7 0 200 VIN=100Vac 1 10 Output Current [mA] Figure 9. LOAD Regulation (IOUT vs. PLOSS) Table 2. Load Regulation (VIN=100Vac) VOUT -11.763 V 71.91 % 84 mA -11.692 V 75.14 % 120 mA -11.663 V 75.49 % 167 mA -11.631 V 75.26 % (c) 2018 ROHM Co., Ltd. Table 3. Load Regulation (VIN=230Vac) Efficiency 42 mA 100 Output Current [mA] Figure 8. Load Regulation (IOUT vs. PLOSS) IOUT 200 Figure 7. LOAD Regulation (IOUT vs. Efficiency) 1.0 0.5 150 Output Current [mA] Figure 6. Load Regulation (IOUT vs. VOUT) 0.8 100 IOUT 5/8 VOUT Efficiency 42 mA -11.782 V 66.42 % 84 mA -11.736 V 69.77 % 120 mA -11.665 V 72.15 % 167 mA -11.625 V 74.41 % No. 60UG070E Rev.001 2018.3 BM2P129TF-EVK-002 User's Guide -10.8 90 IOUT=167mA IOUT=120mA -11.6 -12.0 IOUT= 50mA IOUT= 10mA 70 Efficiency [%] Output Voltage [V] -11.2 -12.4 IOUT= 50mA IOUT= 10mA 60 50 40 30 20 -12.8 10 -13.2 0 80 100 120 140 160 180 200 220 240 260 280 80 100 120 140 160 180 200 220 240 260 280 Input Voltage [Vac] Input Voltage [Vac] Figure 10. LINE Regulation (IOUT vs. VOUT) Figure 11. LINE Regulation (IOUT vs. Efficiency) 120 0.5 VIN=100Vac 100 0.4 VIN=230Vac Coil Peak Current [A] Switching Frequency [kHz] IOUT=167mA IOUT=120mA 80 80 60 40 20 0 VIN=230Vac 0.3 VIN=100Vac 0.2 0.1 0.0 0 50 100 150 200 0 Output Current [mA] 100 150 200 Output Current [mA] Figure 12. Switching Frequency (IOUT vs. FSW) (c) 2018 ROHM Co., Ltd. 50 Figure 13. Coil Peak Current (IOUT vs. Ipeak) 6/8 No. 60UG070E Rev.001 2018.3 BM2P129TF-EVK-002 40 User's Guide VIN=230Vac 35 Ripple Voltage [mVpp] 30 25 VIN=100Vac 20 15 10 5 0 0 50 100 150 200 Output Current [mA] Figure 14. VOUT Ripple Voltage (IOUT vs. Vripple) VO : 20mV/div Ripple Voltage: 19mVpp Time scale 5s/div VIN=100Vac, IOUT=10mA Figure 15. VOUT Ripple Voltage.1 VO : 20mV/div Ripple Voltage: 26mVpp Time scale 20s/div VIN=230Vac, IOUT=10mA Figure 18. VOUT Ripple Voltage.4 (c) 2018 ROHM Co., Ltd. Ripple Voltage: 27mVpp Time scale 5s/div VIN=100Vac, IOUT=120mA Figure 16. VOUT Ripple Voltage.2 Ripple Voltage: 29mVpp Time scale 5s/div VIN=230Vac, IOUT=120mA Figure 19. VOUT Ripple Voltage.5 7/8 Ripple Voltage: 27mVpp Time scale 5s/div VIN=100Vac, IOUT=167mA Figure 17. VOUT Ripple Voltage.3 Ripple Voltage: 35mVpp Time scale 5s/div VIN=230Vac, IOUT=167mA Figure 20. VOUT Ripple Voltage.6 No. 60UG070E Rev.001 2018.3 BM2P129TF-EVK-002 User's Guide Table 4. Parts surface temperature Ta:25, measured 30minutes after startup Condition Part (c) 2018 ROHM Co., Ltd. VIN=90Vac, VIN=90Vac, VIN=264Vac, VIN=264Vac, IOUT=0.120A IOUT=0.167A IOUT=0.120A IOUT=0.167A IC1 47.7 51.4 64.7 67.4 D1 51.2 46.6 56.2 59.6 L1 43.7 45.2 52.0 60.3 8/8 No. 60UG070E Rev.001 2018.3 Notice Notes 1) The information contained herein is subject to change without notice. 2) Before you use our Products, please contact our sales representative and verify the latest specifications : 3) Although ROHM is continuously working to improve product reliability and quality, semiconductors 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. 4) 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. 5) 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. 6) The Products specified in this document are not designed to be radiation tolerant. 7) 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. 8) Do not use our Products in applications requiring extremely high reliability, such as aerospace equipment, nuclear power control systems, and submarine repeaters. 9) ROHM shall have no responsibility for any damages or injury arising from non-compliance with the recommended usage conditions and specifications contained herein. 10) ROHM has used reasonable care to ensure 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. 11) 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. 12) 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. 13) This document, in part or in whole, may not be reprinted or reproduced without prior consent of ROHM. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com (c) 2016 ROHM Co., Ltd. All rights reserved. R1102B <High Voltage Safety Precautions> Read all safety precautions before use Please note that this document covers only the BM2P129TF evaluation board (BM2P129TF-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.