Document 1230
For Texas Instruments
Flyback Transformer TPS23753A PoE controller
• Flyback transformer for 10 W PoE applications
• Developed to work with TI TPS23753A PoE controller
• 1500 Vrms isolation (hipot), one minute from primary and bias
to secondary and sync
Core material Ferrite
Terminations RoHS tin-silver-copper (95.5/3.8/0.7) over tin over
nickel over phos bronze.
Weight 6.2 g
Ambient temperature –40°C to +85°C
Maximum part temperature +125°C (ambient + temp rise)
Storage temperature Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick,
28 mm pocket spacing, 12.93 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Leakage
DCR max (Ohms)4
number1 ±±7 (ꢀµ) min (ꢀµ) pri sec bias sync
PA6340-AL_ 133.0 123.7 0.330 0.0135 0.230 0.190
Turns ratio7
pri : sec : bias : sync
Part
L at 0A2
L at Ipk3
inductance Capacitance6
max (ꢀµ)5
max (pF)
Output8
1.50
70
1 : 0.167 : 0.361 : 0.167 5.0 V, 2.0 A
1. When ordering, please specify packaging code:
3. Peak primary current (1.1 A) drawn at minimum input voltage.
4. DCR for the primary is from pin 1 to pin 2.
5. Leakage inductance measured between pins 1 and 2 with all other
windings shorted.
6. Capacitance is measured from pins 1,2 to pins 6,10 at 250 kHz, 0.5 Vrms.
7. Turns ratio is with the primary windings connected in series.
8. Output is between pins 7 and 10. Bias winding output is 10 V, 20 mA.
Sync winding output is a 5 V Sync FET gate drive signal.
9. Electrical specifications at 25°C.
PA6340-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (175 parts per full reel). Quantities less than full
reel available: in tape (not machine ready) or with
leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part
numbering system, Coilcraft is eliminating the need
for multiple packaging codes. When ordering, simply
change the last letter of your part number from B to D.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
2. Inductance is for the primary, measured at 1 kHz, 0.5 Vrms, 0 Adc.
0.050
1,27
0.028
0.512
6
2
0.080
2,03
0.590
14,99
0,70
Sync
Sec
W1B
W5
13,00
6
5
5
7
Pri
W1A
0.530
13,46
Recommended
Land Pattern
max
10
1
3
1
1
0.098
2,50
0.098
2,50
10
W3
Bias
Dot indicates pin1
Internal code
4
0.500
max
12,70
0.004/0,10
0.039
1,00
0.699
17,75
inches
mm
max
Dimensions are in
Document 1230 Revised 01/14/20
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2020
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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