TO Series SMPS Xfmr Designed in conjunction with ON-Semi, the TO Series of transformers work with the ON Semiconductor NCP1207 PWM current-mode controller with quasiresonant (QR) switching capability. Standard designs for 5V and 12V single outputs in power levels ranging from 25W to 85W will get your prototypes up and running fast. Just contact ICE Components to request samples or to discuss a custom version to meet your specific requirement. Electrical Specifications Part Output Power Vout Iout max LPRI IPK Input Bulk Core Number Range (W) (VDC) (A) (μH) (A) Cap (μF) Type TO-05300 25-30 5.0 6.0 471.4 1.80 68 EFD30 TO-05400 31-40 5.0 8.0 351.8 2.46 82 ER28 TO-05500 41-50 5.0 10.0 289.7 3.09 120 ER28 TO-05650 51-65 5.0 13.0 224.9 3.89 150 PQ32/20 TO-05800 66-80 5.0 16.0 182.9 4.81 180 ERL28 TO-12300 25-30 12.0 2.5 384.4 1.93 68 EF25 TO-12400 31-40 12.0 3.33 288.4 2.63 82 EFD30 TO-12600 41-60 12.0 5.0 194.4 3.97 120 ER28 TO-12850 61-85 12.0 7.1 139.5 5.55 180 ERL28 1. 2. 3. 4. Measured at 100 kHz, 1 Vrms. Electrical specifications at 25ºC. Meets UL 94V-0. Operating temperature range: -40ºC to +130ºC. Operating temperature is the sum of ambient temperature plus temperature rise. 5. Transformer inductance values calculated using ON Semi-conductor’s “QR Inductance Calculation” spreadsheet, available at http://www.onsemi.com/pub/collateral/QR IND CALC.xls. Certain design assumptions were necessary to develop core and bobbin choices: A. Input bulk capacitor sized at 2 uF/W, rounded up to the first commercially available value. B. Universal input voltage, with 265 VAC as the upper limit. The lower limit input voltage was adjusted to cause the input bulk capacitor value to be a commercially available value. C. Maximum switching frequency: 100 kHz. D. E. F. G. Maximum duty cycle: <50%. Efficiency set at 87%. Output diode drop set at 0.4 V. Turns ratios are as follows: 1. 5V: 1:0.08 2. 12V: 1:0.20 H. Estimated total drain capacitance set at 100 pF. I. BMAX set at 0.250 T. J. Wire sized for <40ºC temperature rise at low input line voltage and full output load at 25ºC. 6. Constructed using UL Class B insulation system. 7. Hi-Pot Test: 3750 VAC primary to secondary, and 2500 VAC windings to core. Specifications subject to change without notice. 800.729.2099 tel www.icecomponents.com 97 (04/08) TO-1 SMPS Xfmr TO Series Foot Print Packaging Tray=24 pieces, Box=12 trays, Box=288 pieces Mechanical - EFD30 37.0 max 15.5 max 7 3.0 +/- 0.5 6 SQ 0.64 units: mm Mechanical - ER28 Packaging Tray=66 pieces, Box=5 trays, Box=330 pieces 30.5 max 29.5 max 1 Pri. 2 3.0 min 1 2 3 9 5 6 Mechanical - PQ32/20 dia 0.8 10 9 8 7 1 2 3 4 5 6 Sec. 11,12 6 6 11 7,8 3 5 Bias Dot for pin 1 12 25.0 24.5 ma x TO-XXXXX YYWW Foot Print TOP VIEW 5.0 7 units: mm Foot Print Packaging Tray=40 pieces, Box=4 trays, Box=160 pieces 7.62 35.5 max 33.5 max 1 11 10 1 2 3 7,8,9 9 5 6 5.0 1 8 7 3 4 5 6 Sec. 7,8,9 Bias TOP VIEW units: mm Foot Print Packaging Tray=77 pieces, Box=5 trays, Box=385 pieces 20 max Pri. 2 9,10 3 4 5 5 0.95X0.6 6 white dot for pin 1 Specifications subject to change without notice. www.icecomponents.com 10 9 8 7 6 3 4 5 12.7 30.0 max TO-XXXXX YYYW 5.08 c Sec. Bias 800.729.2099 tel 2 9 Dia 0.8 3 min 4 1 10 10,11,12 3 5 1 3 11 6 27.0 max 2 12 30.0 26.0 max 2 6 Mechanical - EF25 1 Foot Print 38.5 max 3.0 MIN 5 6 units: mm Packaging Tray=48 pieces, Box=5 trays, Box=240 pieces TO-XXXXX YYWW 3 9 5 5.08 6 Dot for pin 1 0.8 dia 31.5 max 2 4 TOP VIEW Mechanical - ERL28 1 7 Sec. Bias Dot for pin 1 8 10,11,12 3 5 3.0 min 1 2 3 9 30.5 27.0 max Pri. 2 TO-XXXXX YYWW 12 6,7 1 2 TOP VIEW 5 units: mm 98 (04/08) TO-2