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Planar Transformer for
Texas Instruments LM5037

  • Specifically developed for use with the TI LM5037 Dual Mode PWM Controller
  • Designed as half bridge in forward topology
  • Auxiliary winding provides 10 V to the chipset
  • 1500 Vdc isolation, primary to secondary
  • RoHS-compliant. 260°C compatible. Matte tin over nickel over brass terminations.

SPECIFICATIONS


Part number1
Click to get parts
Output
power
(W)
Output
voltage
nom (V)
Output
current
(A rms)
Primary
inductance2
min (µH)
Leakage
inductance3
max (µH)
DCR max4
(mOhms)
Turns ratio
pri : sec1 : sec2 : aux
HA3648-BL_ 50 5 10 30.0 0.040 4.8
4.0
110
(pri)
(sec)
(aux)
2 : 1 : 1 : 2
1 When ordering, please specify packaging code: e.g. HA3648-BLD
  Packaging: D = 13" machine-ready reel
EIA 481 embossed plastic tape (200 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 measured on an Agilent/HP 4284 across the primary at 250 kHz, 0.1 Vrms, 0 Adc.
3 Leakage inductance is for the primary, measured at 250 kHz, 0.1 Vrms, 0 Adc with secondary winding shorted.
4 DCR for the secondary is across both windings (from pin 6 to pin 10), measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Ambient temperature range: −40°C to +85°C
6 Storage temperature range: Component: −40°C to +85°C
Tape and reel packaging: −40°C to +80°C
7 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.
8 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 11, 2017