RD2 POWERINT | Alldatasheet
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Technical content
Figure 3. Schematic Diagram of the RD2 Power Supply. Figure 4. Component Legend of the RD2.
250 VAC
The RD2 features a 115/230 VAC selectable input, and is shipped configured for 230 VAC operation (JP1 open). If JP1 is used for 115 VAC operation, it must be removed before applying 230 VAC.
operates from 85 to 132 VAC or 170 to 264 VAC input voltage. the turns ratio between the bias and output windings of T1. winding to improve line and load regulation. the high voltage DC bus applied to the primary winding of T1. and the secondary output circuitry are attenuated by L2 and C7. together with R1, compensates the control loop. measured with AC voltage applied to the RD2. power supply under sustained overload conditions. Figure 5. Parts List for the RD2.
15 OUTPUT
Figure 12. Turn On Delay Figure 13. Output Voltage Turn On Transient Figure 8. Efficiency vs. Input Voltage, 85-132 VAC Figure 9. Efficiency vs. Input Voltage, 170-265 VAC Figure 10. Efficiency vs. Output Power, 115 VAC Input Figure 11. Efficiency vs. Output Power, 230 VAC Input
Figure 18. EMI Characteristics at 230 VAC Input.Figure 17. EMI Characteristics at 115 VAC Input.
100 VDE B Limit
Figure 15. Switching Frequency Ripple, 115 VAC In, 8W OutputFigure 14. Line Frequency Ripple, 115VAC In, 8W Output Figure 16. Transient Load Response (75% to 100% of load)
3000 VAC
60 Hz, 1 minute,
Figure 19. Electrical specification of transformer T1RD2
65 turns from right to left. Finish at pin1. Apply 2 layers of tape for basic insulation. 26 AWG wire* from right to left. Apply 2 layers of tape for basic insulation. wire* parallel bifilar in a single layer, from left to right. Apply 3 layers of tape for basic insulation. Assemble and secure core halves. Impregnate uniformly with varnish.
- Triple insulated wire sources.
Furukawa Electric America, Inc.
200 Westpark Drive
Figure 20. Construction details of transformer T1RD2
B RD2 Notes
B Notes
B RD2 Notes
B Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein, nor does it convey any license under its patent rights or the rights of others. PI Logo and TOPSwitch are registered trademarks of Power Integrations, Inc. ©Copyright 1994, Power Integrations, Inc. 477 N. Mathilda Avenue, Sunnyvale, CA 94086 JAPAN Power Integrations, Inc. Keihin-Tatemono 1st Bldg. 12-20 Shin-Yokohama 2-Chome.Kohoku-ku Yokohama-shi, Kanagawa 222 Japan ASIA & OCEANIA For Your Nearest Sales/Rep Office Please Contact Customer Service Phone: 408•523•9265 Fax: 408•523•9365 WORLD HEADQUARTERS Power Integrations, Inc. 477 N. Mathilda Avenue Sunnyvale, CA 94086 USA Main: 408•523•9200 Customer Service: Phone: 408•523•9265 Fax: 408•523•9365 AMERICAS For Your Nearest Sales/Rep Office Please Contact Customer Service Phone: 408•523•9265 Fax: 408•523•9365 APPLICATIONS HOTLINE World Wide 408•523•9260 APPLICATIONS FAX Americas 408•523•9361 Europe/Africa Japan 81•(0)•45•471•3717 Asia/Oceania 408•523•9364 EUROPE & AFRICA Power Integrations (Europe) Ltd. Mountbatten House Fairacres Windsor SL4 4LE United Kingdom