PA6340

Document 1230
Flyback Transformer
For Texas Instruments
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 (96.5/3.5) 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.
4
Leakage
DCR max (Ohms) inductance
Capacitance6
Turns ratio7
Part L at 0A2 L at Ipk3
1
5
number ±7% (µH) min (µH) pri sec bias sync max (µH) max (pF)
pri : sec : bias : sync
PA6340-AL_
133.0
123.7
0.3300.0135 0.230 0.190
1. When ordering, please specify packaging code:
PA6340-ALD
Packaging:D=13″ machine-ready reel. EIA-481 embossed plastic
tape (175 parts per full reel).
B=Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
2. Inductance is for the primary, measured at 1 kHz, 0.5 Vrms, 0 Adc.
3. Peak primary current (1.1 A) drawn at minimum input voltage.
0.028
0,70
0.512
13,00
1
Dot indicates pin1
XXXX X
0.530 max
13,46
6
1 : 0.167 : 0.361 : 0.167 5.0 V, 2.0 A
70
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.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.590
14,99
0.050
1,27
W1B
0.098
2,50
7
Sec
10
1
0.098
2,50
1
5
Sync
W5
W1A
Recommended
Land Pattern
10
6
2
Pri
PA6340-AL
5
0.080
2,03
1.50
Output8
Internal code
3
Bias
W3
4
0.500 max
12,70
0.039
1,00
0.004 /0,10
0.699 max
17,75
Dimensions are in
inches
mm
Document 1230 Revised 05/16/15