Document 1139
Flyback Transformer
For Texas Instruments
TPS23753A PoE controller
• Flyback transformer for 10 W PoE applications
• Developed to work with TI TPS23753A PoE controller (PMP8896
and PMP9175 Reference Design)
• 1500 Vrms isolation 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
Storage temperature
Component: –40°C to +85°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.
Part
number
1
NA6223-AL_
L at 0A
2
±10% (µH)
180
L at
Ipk
3
min (µH)
162
DCR max (Ohms)
4
pri
sec
bias sync
0.330 0.0135 0.230
0.190
Leakage
inductance
max (µH)
5
1.20
Turns ratio
6
pri : sec pri : bias pri : sync
1
:
0.167
1
:
0.361
1
:
0.167
Output
7
5.0 V, 2.0 A
1. When ordering, please specify
packaging
code:
NA6223-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.
0.512
13,00
5
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. Turns ratio is with the primary windings connected in series.
7. 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.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
2
W1B
6
W5
7
0.028
6
0,70
0.050
1,27
Sync
Sec
Pri
5
W1A
1
3
NA6223-AL
XXXX Y
0.530 max
13,46
1
Recommended
Land Pattern
10
10
Dot indicates pin 1
Internal code
0.098
2,50
0.080
2,03
1
0.590
14,99
0.098
2,50
Bias
W3
4
0.500 max
12,70
0.004 /0,10
0.699 max
17,75
0.039
1,00
Dimensions are in
inches
mm
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
Document 1139
Revised 08/08/13
© Coilcraft Inc. 2016
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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