DTPA1032
www.dtmagnetics.com sales@dtmagnetics.com engineering@dtmagnetics.com
DT Magnetics International, Inc.
140 Crosby Road
Dover, NH 03820 Local Sales Rep Label
Phone (603) 742-4375
Fax (603) 742-
9165
Date code 0229
15 Watt Flyback Transformer
Electrical Characteristics
Parameter Min Typ Max Units Conditions
Lp Primary Inductance 572 635 698 uH 1-2 1v @ 132 kHz
Llkg Leakage Inductance 20 uH 1-2 1v @ 132 kHz (short 3,4,5,6,7,8,9,10)
SRF Self Resonant Frequency 1.0 mHz 1-2
Rp DC Resistance Primary 2.5 Ohms 1-2 @ 25 degC
Rb DC Resistance Bias .50 3-4
Rs DC Resistance Secondary .025 5-6
Rs DC Resistance Secondary .025 7-8
Rs DC Resistance Secondary .15 9-10
Performance Specifications
Parameter Min Typ Max Units Conditions
Po Recommended Output Power 3 15 Watts Total Output
Vo Output Voltage 5v 5v , 5v , 12v 28v Volts Parallel / Individual / Series
Absolute Maximum Ratings
Parameter Min Max Units Conditions
Top Temperature Range - 40 + 130 degC
Tr Temperature Rise 50 degC @ Rated Power
DWV Isolation Voltage 3000 Vrms Pri,bias-sec
DWV Isolation Voltage 1500 Pri-bias
DWV Isolation Voltage 500 Sec-Sec
PRI
BIAS
5V
5V
12V
2
1
3
4
5
6
7
8
9
10
Specifications subject to change without notice.
Turns Ratio available on request.
* 15 Watt design uses Top243
P
• Power Integrations TOPSwitch-GX
Family Transformer
• Designed for TOP242-243 Chip Sets*
• Universal Input 85-265 Volts
• Low Leakage Inductance
• Designed to meet IEC950
• Compact Efficient Design
• 5v, 5v, & 12v Secondaries
• Custom modifications available
(contact DTM engineering)
DTPA1032
www.dtmagnetics.com sales@dtmagnetics.com engineering@dtmagnetics.com
DT Magnetics International, Inc.
140 Crosby Road
Dover, NH 03820 Local Sales Rep Label
Phone (603) 742-4375
Fax (603) 742-
9165
Date code 0229
Package Specifications Typical Voltage Combinations
0.480
0.106
0.138 ø 0.038
CL
0.069
0.053
0.75 Max.
0.65 Max.
0.73 Max.
Suggested Pad Layout
1 4
5
10
2
1
5
6
7
8
9
10
3
4
+V
PRIMARY
+24 V
+12 V
+15 V BIAS
RTN
+18 V
Measurements are in inches
Specifications subject to change without notice.
2
1
5
6
7
8
9
10
3
4
+V
PRIMARY
+5 V
+12 V
+15 V BIAS
RTN
+18 V
Output Voltage can be varied up to 20% by adjusting
the feedback voltage divider.
2
1
5
6
7
8
9
10
3
4
+V
PRIMARY
+5 V
+12 V
+15 V BIAS -5 V
RTN
