Document 544
PoE Transformers For ST Microelectronics STE12PS PSE Power Controller
These surface mount flyback transform...
Document 544
PoE Transformers For ST Microelectronics STE12PS PSE Power Controller
These surface mount flyback transformers were developed specifically for the ST Microelectronics STE12PS 12-Channel PSE Power Control Device. They are designed to work with a 3.3 V input to provide a 12 V output. Isolation is 500 Vdc from each primary winding to the secondary winding. Coilcraft can also design custom transformers with
voltage, inductance and DCR values to meet your specific requirements. For free evaluation samples, contact Coilcraft or order them on-line at www.coilcraft.com.
Part number1
DA2420-AL_ DA2421-AL_
L at 0 A2 ±10% (µH)
330 330
L at Ipk3 DCR max (Ohms)
min (µH)
1-5 2-6 12-7
297 0.756 0.886 5.920 297 0.803 0.984 14.145
Leakage L Turns ratio5 Ipk3
max (µH)4 pri : sec (A) Output
6.00 4.83
1 : 2 1 : 3
2.0 12 V, 100 mA 2.0 12 V, 100 mA
1. When ordering, please specify a packaging co...
