Flyback Transformer for Texas Instruments TPS23753A PoE Controller
Inductor Finders Power  |   RF
Power Magnetics Tools
RF Inductor Tools
CM Choke \ Ferrite Beads
LC Filter Designer
IC / Inductor Match Tool
Application Notes
Other Resources
Designer's Kits

Flyback Transformer for Texas Instruments TPS23753A PoE Controller

  • Flyback transformer for 10 W PoE applications
  • Developed to work with TI TPS23753A PoE controller
  • Isolation (hipot): 1500 Vrms, one minute from primary and bias to secondary and sync
  • RoHS-compliant. Tin-silver-copper (95.5/3.8/0.7) over tin over nickel over phos bronze


Part number1
Click to get parts
at 0 A2
±7 (µH)
at Ipk3
min (µH)
DCR max4
max (µH)
max (pF)
Turns ratio7
Pri : Sec : bias : sync
PA6340-AL_ 133 123.7 0.330 (pri)
0.0135 (sec)
0.230 (bias)
0.190 (sync)
1.50 70 1 : 0.167 : 0.361 : 0.167 5.0 V, 2.0 A
1 When ordering, please specify packaging code: e.g. PA6340-ALD
  Packaging: D = 13" machine-ready reel
EIA 481 embossed plastic tape (175 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
B = Less than full reel
In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.
2 Inductance is for the primary, at 1 kHz, 0.5 Vrms, 0 Adc using an Agilent/HP 4263B impedance analyzer or equivalent.
3 Ipk: Peak primary current (1.1 A) drawn at minimum input voltage.
4 DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Leakage inductance is for the primary and is measured between pins 1 and 2 with all other
windings shorted.
6 Capacitance is measured from pins 1,2 to pins 6,10 at 250 kHz, 0.5 Vrms.
7 Ambient temperature range: −40°C to +85°C
8 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
9 Isolation (hipot): 15000 Vrms, one minute from primary and bias to secondary and sync.
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.

Your comments and suggestions are welcome. Contact [email protected]
Copyright © 2020, Coilcraft, Inc.   Privacy policy
Updated: January 15, 2020