DTPA1074 80 Watt Flyback Transformer 3 7 +15 V PRIMARY • • • • • • • • Power Integrations TOPSwitch-GX Family Transformer Designed for TOP245-247 Chip Sets* Universal Input 85-265 Volts Low Leakage Inductance Designed to meet IEC950 Cost Effective Design 15v, 15v, & 15v Secondaries Custom modifications available (contact DTM engineering) 8 +V 1 9 +15 V 5 +15 V BIAS 10 6 11 +15 V 12 Electrical Characteristics Min Typ Max Units Parameter Lp Primary Inductance 128 Llkg Leakage Inductance SRF Self Resonant Frequency Rp DC Resistance Primary Rb Rs 141 154 4 1-3 1v @ 132khz uH 1-3 1v @ 132khz (short 3,4,5,6,7,8,9,10) MHZ 1-3 .110 Ohms 1-3 @ 25 degC DC Resistance Bias .040 Ohms 5-6 DC Resistance Secondary .011 Ohms 7-8 Rs DC Resistance Secondary .011 Ohms 9-10 Rs DC Resistance Secondary .011 Ohms 11-12 Parameter 1.3 Conditions uH Performance Specifications Typ Max Units Min Po Recommended Output Power 20 Vo Output Voltage 12v Parameter Top Tr DWV DWV DWV 15v,15v,15v Absolute Maximum Ratings Min Max Units Temperature Range Temperature Rise Isolation Voltage Isolation Voltage Isolation Voltage - 40 + 130 50 3000 1500 500 degC degC Vrms Conditions 80 Watts Total Output 48v Volts Parallel / Individual / Series Conditions @ Rated Power Pri,bias-sec Pri-bias Sec-Sec Specifications subject to change without notice. Turns Ratio available on request. * 80 Watt design uses Top 247 www.dtmagnetics.com DT Magnetics International, Inc. 140 Crosby Road Dover, NH 03820 Phone (603) 742-4375 Fax (603) 742-9165 Date code 0229 [email protected] [email protected] Local Sales Rep Label DTPA1074 Package Specifications Typical Voltage Combinations 3 7 +48 V 1.24" Max. PRIMARY 8 +V 1.10" Max. 1 9 +31 V 5 +15 V BIAS 10 6 11 +15 V 6 1 12 3 1.20" Max. 7 +15 V PRIMARY 8 12 RTN +V 7 1 Bottom View 9 +15 V 5 +15 V BIAS 10 RTN 6 .197" 11 0.98" -15 V 12 3 .985" 7 +30 V .052" Dia. Hole Suggested Pad Layout PRIMARY 8 +V 1 Measurements are in inches Specifications subject to change without notice 9 +15 V 5 +15 V BIAS 10 RTN 6 Output Voltage can be varied up to 20% by adjusting the feedback voltage divider. 11 -15 V 12 www.dtmagnetics.com DT Magnetics International, Inc. 140 Crosby Road Dover, NH 03820 Phone (603) 742-4375 Fax (603) 742-9165 Date code 0229 [email protected] [email protected] Local Sales Rep Label