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Isolated AC/DC Converter
AC 100 to AC230V input, 6W output
BP5725
Absolute Maximum Ratings
Parameter 7-pin input voltage 4-pin input voltage 7-pin input Current Maximum power Allowable maximum surface temperature Operating temperature range Storage temperature range Symbol VD VG ID Po Tcmax Topr Tstg Limits 800 45 400 6 105 -25 to +80 -25 to +105 Unit V Vpeak mA W C C C Conditions
Dimensions (mm)
22.5MAX. 7.8MAX.
MARKING SIDE
4.01.0
Ambient temperature + module self-heating Tcmax
24.0MAX.
12345
7 0.250.05 5.55MAX.
P=2.540.2 2.54X6=15.24TYP.
Electrical Characteristics
(Unless otherwise noted, Vi=311V, rated load Ta=25C)
Derating Curve
7 Output Power (W) 6 5 4 3 2 1 0 -30-20-10 0 10 20 30 40 50 60 70 80 90 Ambient Temperature Ta(C) Operation Range
Parameter Symbol Output detection voltage Vod Output current Io Line regulation Load regulation Output ripple voltage Power conversion efficiency Vr VI Vp
Min. -7.1 10 - - - 70
Typ. -7.6 - 380 90 300 77
Max. -8.1 500 500 200 500 -
Unit V mA mV mV mVp-p %
Conditions Io=500mA Refer to derating curve Vi=119V to 405VDC Io=500mA Io=200mA to 500mA 1
1: Pulse noise is not included.
Sample Application Circuit
Be sure to use fuse for safety.
Pin No. 1
Name Vod Vod Vin(-) VG Vs NC
Function This is the output detection terminal. This is the output detection terminal. This is the primary side input minus terminal. MOSFET, GATE driving input terminal. This is the start terminal. Connect this via the external resistor (720k) to Vi (+). This is the NC pin. This is the built-in FET of drain terminal. The primary coil minus side of the external transformer, and the snubber circuit for noise reduction are connected to this.
Conversion Efficiency
Conversion Efficiency (%)
Vin+
FUSE ZNR C6
FL1 D3 R2 R1 + C2 D1 D2 Vo + T1 2 3 4 5 6
(Vin=311V, Ta=25C)
100 80 60 40 20 0 0 50 100 150 100 250 300 350 400 450 500
Vi n -
C1
R3 C4 +
R4 GND
C3
C5
Output Current Io(mA)
123 45 7 BP5725
7
VD
Load Regulation
(Vin=311V, Ta=25C)
Output Voltage Vo(V)
18.0 16.0 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0.0
External Component Settings
Be sure to evaluate it under the condition that it C1: Capacitor for input voltage smoothing 10F/450V is mounted by your product. Especially, confirm C2: For noise terminal voltage reduction 2200pF/1kV whether output power never exceeds a maximum standard with current probe. C3: Capacitor for Vod voltage smoothing 10F/50V C4: Capacitor for output voltage smoothing 1000F/25V C5: For noise terminal voltage reduction 2200pF/AC250V C6: Noise terminal voltage Please set it, if necessary countermeasure capacitor Limiting element voltage DC630V or higher 0.1 to 0.22F D1: Rectifier diode FRD 800V/0.5A D2: Rectifier diode FRD 200V/1A D3: Diode bridge 800V/1A R1, R3: Resistor 360k5% 0.25W R2: Resistor 200k5% 1W R4: Bleeder resistor In case Io is less than 10mA, connect a bleeder resistance in parallel to C4. T1: Switching transformer FL1: For noise terminal voltage reduction Please set it, if necessary FUSE: Fuse Be sure to use this for safety. ZNR: Varistor Must be use. It protects this part from lightning surge and static electricity.
Maximum Io=500mA
0
200
400
600
800
1000
1200
Output Current Io(mA)
Precautions on use of products
When the capacity of the output smoothing electrolytic capacitor C1 is made large, output may not rise. 100F to 2200F is recommended. Set the rise time within 10ms. Set the Vod electrolytic capacitor C3 to 10F. Be sure to use the VG terminal voltage within the operating voltage range. Set the external starting resistor (R1+R3) to 720K. When reducing the resistance value, start-up may fail. Take note of the loss of the resistor when it is reduced. This product has built-in over current (reset type) protection function to prevent destruction at abrupt error. These protection functions are effective for prevention against destruction owing to abrupt accident, therefore, avoid using them for continuous protection circuit operating, or at transition
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the NOTES specified in this catalog.
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Appendix1-Rev2.0

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