High Frequency Batcore Planar Transformer ER25+ (up to 800W) Power Rating: up to 800W Height: 18.3mm Max Footprint: 33.5mm x 26.8mm Max Frequency Range: 200kHz to 700kHz Isolation (Primary to Secondary): 1500VDC Patent pending Electrical Specifications @ 25°C - Operating Temperature -40°C to +125°C Turns Ratio Part Number PH9278NL Primary Secondary A Secondary B 3T 3T 3T Primary Inductance (µ H MIN) Leakage Inductance (µ H MAX) 37.8 0.12 Mechanical DCR (m Ω MAX) Primary Secondary A Secondary B 2.4 2.4 2.4 Schematic PH9278NL Weight . . . . . . . . . . . . . . . . . . . . . . . . . . 45 grams Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30/tray Tape & Reel . . . . . . . . . . . . . . . . . . . . . . . 45/reel Dimensions: Inches mm .005[.13] 5 SURFACES Unless otherwise specified, all tolerances are ± .010 0.25 USA 858 674 8100 Germany 49 7032 7806 0 1 Singapore 65 6287 8998 pulseelectronics.com Shanghai 86 21 62787060 China 86 755 33966678 Taiwan 886 3 4356768 P729.A (2/14) High Frequency Batcore Planar Transformer ER25+ (up to 800W) Notes PH9278NL 1. 2. 3. 4. Leakage inductance is measured on winding (1-3) with (4,5,6)shorted. The “NL” suffix indicates a ROHS-compliant part number. Other primary and secondary turns are available on request. Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the complete number (e.g. PH9278NL becomes PH9278NLT). 5. To determine if the transformer is suitable for your application, it is neccesary to ensure that the temperature rise of the component (ambient plus temperature rise) not exceed its operating temperature. To determine the approximate temperature rise of the transformer, refer to the graphs below. Temperature Rise vs. Power Disipation Temperature Rise vs. Power Disipation 3.000 90 80 2.500 Temperature Rise (C) Core Loss (W) Core loss=2.61E-13*(DeltaB)^2.5*(Freq_KHz)^1.8 1 CoreCore Loss vsvsFlux Loss FluxDensity Density 2.000 1.500 1.000 70 60 50 40 30 20 10 0.500 0 0.000 0 500 1000 1500 2000 0 1 2 3 4 5 6 7 8 9 Power Disipation (W) 2500 Delta B (Gauss) 100kHz 200kHz 300kHz 400kHz 500kHz 600kHz 700kHz DletaB(Guass) = 5.88E+4*Vin_min*Dutycycle_max/(Freq_KHz*Pri_Turns) For More Information Pulse Worldwide Headquarters 12220 World Trade Drive San Diego, CA 92128 U.S.A. Pulse Europe Zeppelinstrasse 15 71083 Herrenberg Germany Tel: 858 674 8100 Fax: 858 674 8262 Pulse China Headquarters B402, Shenzhen Academy of Aerospace Technology Bldg. 10th Kejinan Road High-Tech Zone Nanshan District Shenzen, PR China 518057 Tel: 86 755 33966678 Fax: 86 755 33966700 Pulse North China Room 2704/2705 Super Ocean Finance Ctr. 2067 Yan An Road West Shanghai 200336 China Pulse South Asia 135 Joo Seng Road #03-02 PM Industrial Bldg. Singapore 368363 Pulse North Asia 3F, No. 198 Zhongyuan Road Zhongli City Taoyuan County 320 Taiwan R. O. C. Tel: 886 3 4356768 Fax: 886 3 4356823 (Pulse) Fax: 886 3 4356820 (FRE) Tel: 86 21 62787060 Tel: 65 6287 8998 Tel: 49 7032 7806 0 Fax: 86 2162786973 Fax: 65 6287 8998 Fax: 49 7032 7806 12 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, 2014. Pulse Electronics, Inc. All rights reserved. 2 pulseelectronics.com P729.A (2/14)