特点:
Very low profile flyback transformer in EFD format for a 5 Watts DC/DC converter.
- Low profile (< 11mm height).
- Low cost solution.
- SMD terminals.
- Flat top allowing easy pick and place mounting.
- Very low AC losses.
- Capable to operate at high switching frequencies (up to 300kHz).
- Splitted primary winding allowing low leakage inductance (<500nH).
- Multiple output design (5Vdc / 1Amp or 10Vdc / 0.5Amp).
- Auxiliar winding (15 Vdc) to supply PWM controller included.
- Operating temperature up to 105ºC.
Electrical specification:
- Topology: Flyback discontinuos mode.
- Input voltage: 36 to 72 Vdc.
- Output voltage: 2 x 5 Vdc and 1 x 10 Vdc (connecting secondaries in series).
- Output Power: 5 Watts max.
- Switching frec.: 100 – 300 kHz.
- Duty cycle max: 0.45.
- Inductance (P): 322 µH ± 10% (measured at 10kHz, 250mVac).
- Leakage inductance: 500 nH max (measured in primary all secondaries short).
- Turns ratio (P:Aux:S1:S2): 32 : 12 : 5 : 5.
- Isolation: Prim to Sec = 1500 Vac.
- Total losses: 0.3 Watt max (with 5 W output power).
- Operating temp: -25 to 105 ºC.
- Storage temp: -40 to 155 ºC.