Flyback Transformer
for
Texas Instruments TPS23753A
- Developed for TI TPS23753A PoE PD controller (PMP8896 and PMP9175 reference designs)
- 36 – 57 V input
- 10 V, 20 mA bias winding output; 5 V, 10 mA sync winding output
- 1500 Vrms, one minute 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
SPECIFICATIONS
Schematic 
Dimensions 
Tape and reel specifications 
3D model
| Part number1 Click to get parts |
L at 0 A2 ±10% (µH) |
L at Ipk3 ±10% (µH) |
DCR max4 (Ohms) |
Leakage L max5 (µH) |
Turns ratio6 | Ipk3 (A) |
Output7 | |
|---|---|---|---|---|---|---|---|---|
| NA6223-AL_ | 180 | 162 | 0.330 (pri) 0.0135 (sec) 0.190 (sync) 1.230 (bias) |
1.2 | pri : sec pri : sync pri : bias |
1 : 0.167 1 : 0.167 1 : 0.361 |
1.1 | 5.0 V, 2 A |
| 1 | When ordering, please specify packaging code: e.g. 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 100 kHz, 0.1 Vrms, 0 Adc | |
| 3 | Ipk is the peak primary current drawn at minimum input voltage. | |
| 4 | DCR for the primary is from pin 1 to pin 2, measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator. | |
| 5 | Leakage inductance if for the primary and is measured with all other windings shorted. | |
| 6 | Turns ratio is with the primary windings connected in series. | |
| 7 | Output for the secondary 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 | Ambient temperature range: | −40°C to +85°C |
| 9 | Storage temperature range: | Component: −40°C to +85°C Tape and reel 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. | |
| 11 | Electrical specifications at 25°C. | |
| Refer to Soldering Coilcraft Components before soldering. | ||
| PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info. | ||