BP5718A12

Data Sheet 100VAC Input/12VDC (1A) Output Isolated AC/DC Converter BP5718A12 Absolute Maximum Ratings Parameter Pin 11 input voltage Pin 7,8 input voltage Pin 11 input Current Pin 8 input Current Output power Withstand voltage Maximum allowable surface temperature Operating temperature range Storage temperature range Symbol VD VDD ID IDD Po VI Tcmax Topr Tstg Limits 500 25 500 10 13 2.5 105 −25 to +80 −40 to +105 Unit V V mA mA W kW °C °C °C Conditions Dimensions (Unit : mm) 1 sec (between primary and secondary) Ambient temperature + module Tcmax self-heating Derating Curve Output Power (W) Electrical Characteristics Parameter Symbol Pin 11 input voltage VD Operating power VDD voltage (Pin 7) Rated output voltage Vo Rated output current Io Line regulation Load regulation Output ripple voltage Power conversion efficiency ∆ Vr ∆ VI ∆γ η Min. − 8.8 11.4 0 − − − 75 Typ. − 12 12.0 − 5 58 135 83 Max. 350 20 12.6 1000 200 200 500 − Unit V V V mA mV mV mVpp % Conditions Io=1000mA DC, Io=1000mA *1 Refer to derating curve Vi=113V to 195VDC Io=1000mA Io=50mA to 1000mA *2 12 Operation Range 6 -30-20-10 0 10 20 30 40 50 60 70 80 90 Ambient Temperature Ta(°C) Switching Frequency Switching Frequency fsw(kHz) 100 80 60 40 20 0 0 200 400 600 800 1000 *1: The operation starting voltage is between 15.5 and 17.5 V. *2: Pulsating noise is not included. Sample Application Circuit Vi(+) R5 AC100V ZNR F1 Vi(-) Use a fuse for safety C5 D7 + Pin No. T1 D1 + 9 1 0 6 7 Terminal name Vo Terminal function Secondary 12V output voltage control terminal. Insert a 1000µF output smoothing capacitor before the GND for use. Secondary 12V output GND terminal. Primary input negative terminal. Internal circuit power terminal. Start-up terminal. Connect to Vi (+) through an external resistor (1.5MΩ). NC pin. Drain terminal for the built-in FET. R1 C4 C7 R2 C2 3 Vo1:12V/850mA C1 GND1 Vo2:18V/100mA GND2 1 D2 1 D3 C3 4 5 + D5 + Output Current Io(mA) C6 2 6 GND Vi(-) VDD Vs NC VD 8 7 11 2 1 7 8 Conversion Efficiency Conversion Efficiency η (%) 100 90 80 70 60 50 40 30 20 10 0 0 BP5718A12 6 9 11 Verify proper operation under actual conditions before use. In particular, confirm that the load current does not exceed the maximum rating. External Component Settings *C1: Output smoothing capacitor 1000µF/35V Low-impedance type 2200pF/400V or higher C2: Noise reduction capacitor *C3: Output smoothing capacitor 10µF/50V Low-impedance type C4: Input smoothing capacitor 100µF/250V Use if necessary C5: Noise reduction capacitor C6: Output smoothing capacitor 100µF/35V Low-impedance type C7: Noise reduction capacitor Use if necessary Limiting element voltage 250V or higher 0.1 to 0.22µF D1: Rectifier Diode 60V/6A D2: Rectifier Diode 1kV/1A *C1, C3, R2:Refer to directions 500 1000 D3: D5: D7: R1: Rectifier Diode Rectifier Diode Diode Bridge Resistor Output Voltage Vo(V) * R2: Resistor R5: Noise reduction resistor T1: Switching Transformer F1: Fuse ZNR: Varistor 80V/0.1A 100V or higher /1A 800V/1A 100kΩ±5%, 3W Limiting element voltage 300V or higher 1.5MΩ±5%, 0.25W Limiting element voltage 300V or higher Use if necessary 1W or higher 10 to 22Ω Be sure to use this for safety. A varistor is required to protect against lightning surges and static electricity. Output Current Io(mA) Load Regulation 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0.0 0 1000 2200 Maximum Io=1000mA Output Current Io(mA) Operation Notes An excessively large capacitance at C1 may cause the output to become inactive. Therefore, a capacitance between 1000 and 2200µF is recommended, with a rise time of 10ms or less. The capacitance of C3 should be 10µF, since an excessively small value will result in malfunction. The activation time is defined as: t(sec)=R2�C3�ln[1-17/(VI-30µA�R2)], where VI is the DC voltage after smoothing. The resistance of R2 should be 1.5MΩ, since an excessively small value will result in malfunction. Overcurrent (reset type) and overvoltage (latch type) protection circuits are built in, preventing damage from occurring due to unexpected conditions. The overvoltage protection circuit shuts down operation once VDD exceeds 20V. In order to reset the input capacitor C4 must be discharged and the power turned back on. www.rohm.com ©2010 ROHM Co., Ltd. All rights reserved. 1/1 2010.01 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. 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