Flyback Transformer for TI
TPS61046 Boost Converter
- Developed for the Texas Instruments Isolated Flyback DC-DC converter reference design (PMP9801) based on the TPS61046 boost converter.
- 5 – 20 V input; 5 V, 250 mA output
- Output of the auxiliary winding is 5 V, 2 mA, used to power the IC
- 4000 Vrms, one minute isolation from the primary and auxiliary winding to the secondary
- RoHS-compliant. 260°C compatible. RoHS 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 |
Inductance at 0 A2 ±10% (µH) |
Inductance at Ipk3 min (µH) |
DCR max (Ohms)4 | Leakage L max5 (µH) |
Turns ratio pri : sec : bias |
Ipk3 (A) |
Output6 | ||
|---|---|---|---|---|---|---|---|---|---|
| pri | bias | sec | |||||||
| CX9721-AL_ | 10 | 8 | 0.08 | 0.08 | 0.08 | 0.16 | 1 : 1 : 1 | 1.0 | 5 V, 250 mA |
| 1 | When ordering, please specify packaging code: e.g.CX9721-ALD | |
| Packaging: | D = 13" reel, machine-ready EIA-481 embossed plastic tape (700 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 if for the primary,measured at 100 kHz, 0.1 Vrms, 0 Adc | |
| 3 | Peak primary current drawn at minimum input voltage | |
| 4 | DCR is measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator. | |
| 5 | Leakage inductance measured at 100 kHz, 0.1 Vrms, between pins 1 and 2 with all other pins shorted. | |
| 6 | 5 V, 250 mA output of the secondary winding. 5 V, 2 mA output of the bias winding. | |
| 7 | Ambient temperature range: | −40°C to +125°C |
| 8 | Storage temperature range: | Component: −40°C to +160°C Tape and reel packaging: −40°C to +80°C |
| 9 | Maximum part temperature: +160°C (Ambient + temperature rise) | |
| 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. | ||
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