Document 439
For Texas Instruments TPS23750
Flyback Transformers PoE Powered Device Controller
• IsolatedsynchronousflybacktransformersdevelopedforTexas
Instruments PMP929 reference design.
• Operates up to 500 kHz with 18 – 72 V input
• 1500Vrms,oneminuteisolationprimaryandbiastosecondary
Core material Ferrite
Terminations RoHS tin-silver (96.5/3.5) over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 5.0 – 5.3 g
Ambient temperature –40°C to +125°C
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 200 per 13″ reel Plastic tape: 44 mm wide,
0.35 mm thick, 28 mm pocket spacing, 9.6 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
Leakage L5
max (µH)
L at0A2 LatIpk3
DCR max (Ohms)
Turns ratio
Part
±±0ꢀ
min
Ipk3
Drive
output
number1 (µH)
(µH)
pri
sec4 drive bias pri drive pri:sec6 pri:drive pri:bias (A)
Output7
C1173-AL_ 166.5
C1174-AL_ 150.0
GA3562-BL_166.5
150.0 0.770 0.020 0.523 1.12 2.50 0.400
135.0 0.515 0.023 0.570 0.88 2.00 0.400
150.0 0.740 0.100 0.456 1.15 2.05 0.245
6.5:1
5.0:1
2.0:1
3.7:1
3.2:1
4.0:1
2.0:1
2.25:1
2.0:1
1.2 3.3 V, 3 A 5.6 V, 10 mA
1.2 5.0 V, 2 A 7.5 V, 10 mA
1.2 12 V, 0.83 A 6.0 V, 10 mA
1. When ordering, please specify packaging code:
C±±74-ALD
4. DCR for secondary is with windings connected in parallel.
5. Leakage inductance for the primary is with the secondary and drive
windings shorted; leakage inductance for the drive winding is with the
secondary windings shorted.
6. Turns ratio is with both secondary windings connected in parallel.
7. Output of the secondary is with the windings connected in parallel. Bias
winding output is 10 V, 20 mA.
Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic
tape (200 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.
8. Electrical specifications at 25°C.
2. Inductance is for the primary, measured at 100 kHz, 0.1 Vrms.
3. Peak primary current drawn at minimum input voltage.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Dot indicates pin 1
0.07
1,79
12
11
0.135
3,43
0.028
0,72
0.665
16,88
3
1
12
1
6
12
7
Primary
Secondary
C117x-AL
XXXXY
0.677
17,20
max
9
10
5
8
Drive
7
2
0.098
2,5
0.098
2,5
Recommended
Land Pattern
0.865
max
Bias
21,97
Parts manufactured prior
to December 2011 may
be marked differently.
1
The secondary windings are to be
0.335
8,51
max
connected in parallel on the PC board.
0.004/0,10
0.590
14,98
inches
mm
0.079
2,01
0.693
17,60
Dimensions are in
Document 439 Revised 12/21/11
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. 2013
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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