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| Flyback Power Transformer ELECTRONICS INC. EPC3127-X * Used in SMPS Flyback Topology * Designed for use with Power Integration Chip * Reinforced Insulation (Triple Insulated Wire) * UL 94V-0 Recognized Components * UL 1446 Class F Insulation System * Very Low Core Loss Electrical Parameters @ 25 C PCA Part Number Chipset Voltage (Vdc) V in V out 1 V out 2 V out 3 Primary OCL (H 10%) @ 10 KHz, 0.1 Vrms Sec. 1 3.0 2.0 2.0 1.2 2.0 Current (Amp.) Sec. 2 N N 2 N N Sec. 3 .05 .05 .05 .05 .05 Schematic EPC3127-1 EPC3127-2 EPC3127-3 EPC3127-4 { N TNY268P 120-375 5 1900 15 N TNY266P 120-375 5 1900 15 3.3 TOP232Y/TOP242Y 120-375 5 2400 15 N TOP244P 120-375 13.55 475 15 N TNY267 120-375 3.3 2800 15 * Switching Frequency : 132 KHz * Isolation : 4500 Vrms * Dielectric Rating (Vrms) A A B A A 1 sec. 4500 or 60 sec. 3750 Pri. to all Sec. Wdg's & Core 1 sec. 4500 or 60 sec. 3750 Between Sec. Wdg's to Core * Note : "N" means Not Required/No Connections * 1 sec. 1500 Between Pri. Wdg & Bias Schematic A 1 V in Pri. 2 Sec. 3 3 (Fb/Bias) 4 7 6 Sec. 2 5 8 Sec. 1 Pri. 2 Sec. 3 3 (Fb/Bias) 4 1 Schematic B 8 Sec. 1 7 6 Sec. 2 5 Package .787 (20.00) .728 Max. (18.50) .552 Max. (14.00) .815 (20.70) PCA EPC3127-X D.C. .590 (15.00) .590 (15.00) .197 (5.00) .138 (3.50) .031 O (.800) .590 Typ. (15.00) .063 (1.60) .590 Typ. (15.00) .197 (5.00) .051 (1.30) Unless Otherwise Specified Dimensions are in Inches /mm .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSC3127-X Rev. 5 1/3/05 FT TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com |
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