base/gate driver transformers document 130 -1 document 130-1 revised 04/20/12 ? lower cost than toroidal equivalents ? frequency range of 10 C 250 khz and up ? industry standard pin centers ? 3750 vrms, one minute isolation (hipot) between primary and secondary windings; 1500 vrms, one minute between secondaries ? ul1446 class b (130c) insulation system (ul file e83628) coilcraft designers kit no. p404 contains samples of four standard driver transformers. to order, contact coilcraft or visit http://order.coilcraft.com to purchase on-line. sd250-1l SD250-2L sd250-3l sd250-4l turns ratio 3% (pri : sec) 1 : 1 1 : 1.5 1 : 1 : 1 1 : 1.5 : 1.5 primary winding inductance (min) 1 1.5 mh 1.5 mh 1.5 mh 1.5 mh leakage inductance (max) 1 4.0 h 4.0 h 4.0 h 4.0 h dcr 0.4 0.4 0.4 0.4 volt-time product 375 v-sec 375 v-sec 375 v-sec 375 v-sec secondary winding(s) capacitance, pri to sec (max) 50 pf 50 pf 50 pf 50 pf dcr, each section (max) 0.75 2.5 0.75 2.5 1. measured at 1 vrms, 15.75 khz. 2. operating temperature range C40c to +85c. 3. electrical specifcations at 25c. 5 6 10 1 pr i (dr iv e) pr i (dr iv e) 5 1 sec 9 10 sec 2 6 7 sec 1 sd250-1 and 250-2 sd250-3 and 250-4 0.044 1,12 0.15 0.030 3,81 0,762 0.032 0,813 0.950 24,13 max dia ref dia pins 7 and 9 are not present on sd250-1 and sd250-2 0.62 0.015 15,75 0,38 0.75 19,05 recommended boar d la y out 0.20 5,08 0.40 10,16 0.80 20,32 1 5 67 91 0 1.10 27,94 0.395 10,03 1.10 27,94 max max notch indicates pin 1 max 15 6 7 9 10 weight: 15.6 C 16.8 g termination: tin-silver over tin over copper packaging: 49 per tray
document 130-2 in addition to the standard base/gate driver transformers shown here, coilcraft can provide custom versions to meet your specifcations. our two basic structures are the 0.95 high part shown and a 1.20 high version. both are available with either single or double sections. 36 34 32 30 28 26 24 22 20 18 16 14 12 10 20 50 100 n l (tur ns/la y er) n p (tur ns) * applies to both 0.95 and 1.20 high bobbins . * applies to both doub le and single section bobbins . wire siz e (a wg hea vy insulation) e-t (v olt-microseconds) single section bob bins doub le section bob bins t urns p er la yer vs wire size* v olt-time vs primar yt urns* 3000 2500 2000 1500 1000 500 20 40 60 80 100 120 140 160 0.95 high bob bins 1.20 high bob bins please use the information below to determine the performance characteristics available. core initial permeability 2000 2000 a e (core cross-sectional area) 0.40 cm 2 0.80 cm 2 l e (mean magnetic path length) 4.90 cm 4.80 cm bobbin material ul94v-0, 130c number of terminals available 10 10 number of wiring sections available 1 or 2 1 or 2 document 130-2 revised 04/20/12 custom version specifcations
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