Flyback Transformers
for
Texas Instruments TPS23750
| New RoHS part numbers are shown. Lead was removed from terminations. The second to the last character is now L to indicate RoHS compliance. (View old data sheet.) |
- Developed for TI TPS23750 PoE PD controller (PMP929 reference design)
- Isolated, synchronous flyback transformers for IEEE 802.3af PoE applications
- 18 – 72 V input
- 10 V, 20 mA bias winding output
- 1500 Vrms isolation from the primary and bias windings to the secondary
- RoHS-compliant 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations
Photo 
Pricing 
Materials declaration 
PDF data sheet
SPECIFICATIONS
Dimensions 
Schematic 
Tape and reel specifications
3D models
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| C1173-AL_ | 166.5 | 150.0 | 0.770 (pri) 0.020 (sec) 0.523 (drive) 1.12 (bias) |
2.5 (pri) 0.40 (drive) |
pri : sec pri : drive pri : bias |
6.5 : 1 3.7 : 1 2.0 : 1 |
1.2 | 3.3 V, 3 A | 5.6 V, 10 mA |
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| C1174-AL_ | 150.0 | 135.0 | 0.515 (pri) 0.023 (sec) 0.570 (drive) 0.88 (bias) |
2.0 (pri) 0.40 (drive) |
pri : sec pri : drive pri : bias |
5.0 : 1 3.2 : 1 2.25 : 1 |
1.2 | 5.0 V, 2 A | 7.5 V, 10 mA |
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1 |
When ordering, please specify packaging code: e.g. C1174-ALD |
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Packaging: |
D = 13"
machine-ready reel |
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2 |
Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc |
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3 |
Ipk is the peak primary current drawn at minimum input voltage. |
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4 |
DCR for secondary is for the windings connected in parallel. |
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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. |
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6 |
Turns ratio is with the secondary windings connected in parallel. |
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| 7 | Output for the secondary is with the windings connected in parallel. | |
| 8 | Ambient temperature range: | –40°C to +125°C |
| 9 | Storage temperature range: | Component: –40°C to +125°C T&R packaging: –40°C to +80°C |
| 10 | Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. | |
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11 |
Electrical specifications at 25°C. |
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| Refer to Soldering Coilcraft Components before soldering. | ||