High Frequency Wire Wound Transformers EF25 Platforms - THT Horizontal Y AC/DC and DC/DC Switching Transformers Reinforced Insulation 3000 Vrms Hi-pot Height: 20.8mm Max Footprint: 29.2mm x 27.9mm Max Topology: Flyback Electrical Specifications @ 25°C — Operating Temperature -40°C to 130°C 5 380µH ±10% 11µH MAX 945mW MAX 40mW MAX 85mW MAX 3000Vrms 90-380Vdc 3.2 200kHz AR (3-1) (3-1) with (7-9) shorted (3-1) (9-7) (4-5) Pri-Sec 1528.3 (3-1) (3-1) with (7-9) shorted (3-1) (9-7) (4-5) Pri-Sec 4152.8 1-3) (1-3) with (6,7,8,9,10) shorted (1-3) (10-8) (7-6) (4-5) Pri-Sec 2.7 (3-1) (3-1) with (7-9) shorted (3-1) ( 9-7) ( 4-5) Pri-Sec 1537.3 (1-3) (1-3) with (4,5,6,7,8,9,10) shorted (1-3) (9-10) (5-4) (6-7) Pri-Sec 1179.8 1850µH ±15% 21µH MAX 930mW MAX 223mW MAX 408mW MAX 3000Vrms IN EL IM Pri. Inductance Lk. Inductance PA1297NL DCR Hi-Pot K1 Factor Pri. Inductance Lk. Inductance PA2547NL DCR Hi-Pot K1 Factor Pri. Inductance Lk. Inductance PA2611NL DCR Hi-Pot K1 Factor Pri. Inductance Lk. Inductance DCR PA2676NL Hi-Pot K1 Factor Pri. Inductance Lk. Inductance PA2804NL DCR Hi-Pot K1 Factor 9850µH ±15% 40µH MAX 790mW MAX 220mW MAX 15mW MAX 80mW MAX 3000Vrms PR 860µH ±15% 78µH MAX 910mW MAX 3050mW MAX 350mW MAX 4000Vrms 275µH ±10% 8.4µH MAX 250mW MAX 160mW MAX 400mW MAX 311mW MAX 3000Vrms 1.0 1 4 13V / .02A 9 28V / 1.1A 7 0.46 5 190-370Vdc 140kHz 3.3 9 1.0 1 4 47V / 0.64A 7 47V / .02A 1.0 5 1 375-390Vdc 100kHz 1.0 4.24 1.0 3 4 0.29 13V / 0.02A 5 10 9 8 7 0.29 45V / 1.1A 13V / 0.3A 6 HALF-BRIDGE TRANSFORMER 3 400V 80kHz 9 1.0 1.0 1 4 25V / 0.02A 140V / 75W 7 0.167 5 FLYBACK TRANSFORMER 1 85-305Vdc 80-200kHz 10 1.96 1.0 3 4 0.57 16V / 0.02A 5 35V / 0.7A 9 7 0.44 13V / 0.02A 6 FLYBACK TRANSFORMER USA 858 674 8100 • Germany 49 7032 7806 0 • Singapore 65 6287 8998 • Shanghai 86 21 32181071 • China 86 755 33966678 • Taiwan 886 3 4643715 www.pulseeng.com 1 PRELIMINARY P681.A (5/09) High Frequency Wire Wound Transformers EF25 Platforms - THT Vertical Notes 4. In high volt-µsec applications, it is important to calculate the core loss of the transformer. Approximate transformer core loss can be calculated as: CoreLoss (W) = 3.9E-13 * (Freq_kHz)1.63 * (DB_Gauss)2.63 where DB can be calculated as: For Flyback Topology: DB = K1_Factor * D(A) For Forward Topology: DB = K1_Factor * Volt-µsec 5. The “NL” suffix indicates an RoHS-compliant part number. Non-NL suffixed parts are not necessarily RoHS compliant, but are electrically and mechanically equivalent to NL versions. If a part number does not have the “NL” suffix, but an RoHS compliant version is required, please contact Pulse for availability. AR Y 1. The temperature of the component (ambient plus temperature rise) must be within the stated operating temperature range. 2. The above transformers and inductors have been tested and approved by Pulse’s power IC partners and are sited in the appropriate datasheet or evaluation board documentation at these companies. To determine which IC and IC partners are matched with the above Pulse part numbers please consult the IC Cross Reference on the Pulse website. 3. For flyback topology applications, it is necessary to ensure that the transformer will not saturate in the application. The peak flux density (Bpk) should remain below 2700Gauss. To calculate the peak flux density use the following formula: Bpk (Gauss) = K1_Factor * Ipk(A) IN Mechanical PULSE PA2804NL DATE ORIGIN IM .82 MAX 20,82 1.10 27,94 MAX EL 1 5 SQ .027 (9X) 0,69 .80 20,32 PR 1.15 MAX 29,21 5 10 .20 4X 5,08 6 6 4 7 3 8 2 9 10 9XØ (.063) 1,60 1 LAYOUT (PIN VIEW) For More Information: Pulse Worldwide Headquarters Pulse Europe Einsteinstrasse 1 12220 World Trade Dr. D-71083 Herrenberg San Diego, CA 92128 Germany U.S.A. www.pulseeng.com Tel: 858 674 8100 Fax: 858 674 8262 Tel: 49 7032 7806 0 Fax: 49 7032 7806 135 Pulse China Headquarters Pulse North China Pulse South Asia Pulse North Asia B402, Shenzhen Academy of Aerospace Technology Bldg. 10th Kejinan Rd. High-Tech Zone Nanshan District Shenzen, PR China 518057 TEL: 86 755 33966678 FAX: 86 755 33966700 Room 1503 XinYin Building No. 888 YiShan Rd. Shanghai 200233 China 135 Joo Seng Rd. #03-02 PM Industrial Bldg. Singapore 368363 No. 26, Kao Ching Rd. Yang Mei Chen Taoyuan Hsien Taiwan R. O. C. Tel: 86 21 54643211/2 Fax: 86 21 54643210 TEL: 65 6287 8998 FAX: 65 6280 0080 Tel: 886 3 4643715 Fax: 886 3 4641911 Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. © Copyright, 2009. Pulse Engineering, Inc. All rights reserved. www.pulseeng.com 2 PRELIMINARY P681.A (5/09)