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Flyback Transformer for
Texas Instruments PMP7899

  • Developed for Texas Instruments PMP7899 Reference Design for Non-Synchronous Flyback Converter with an Isolated Output
  • 8 – 18 V input; 48 V, 1 A output
  • 9 V, 20 mA aux winding output
  • 1500 Vrms, one minute isolation (hipot) from the primary and aux windings to the secondary
  • RoHS-compliant  260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations

SPECIFICATIONS


Part number
Click to get parts
L at 0 Adc1
±15% (µH)
L at Ipk2
min (µH)
DCR max3
(Ohms)
Leakage
L max4
(µH)
Turns ratio Ipk2
(A)
Output5
NA6264-AL 2.56 2.176 0.0065 (pins 1 – 3)
0.0065 (pins 2 – 4)
0.130 (pins 5 – 6)
0.110 (pins 11 – 8)
0.060 pri : sec
pri : aux
: 6
: 1.5
16.5 48 V, 1 A
1 Inductance is for the primary, measured with the windings connected in parallel at 300 kHz, 0.3 Vrms
2 Ipk is the peak primary current drawn at minimum input voltage.
3 DCR is measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
4 Leakage inductance if for the primary and is measured with the windings connected in parallel with the secondary windings shorted.
5 Output is for the secondary. Aux winding output is 9 V, 20 mA
6 Ambient temperature range: −40°C to +125°C
7 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
8 Maximum part temperature: +125°C
9 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.
10 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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Updated: April 12, 2017