TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC FIGURE 1: SCHEMATIC DIAGRAM SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS PWR-TOP246. PARAMETER MIN. PRIMARY INDUCTANCE (3-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ 90 SPEC LIMITS TYP. 100 MAX. UNITS 110 µHY WHITE DOT DENOTES PIN #1 1 PRIMARY TURN RATIO'S: SEC #1 (9,10-12) : PRIMARY (3-1) SEC (9,10-15,16) : PRIMARY (3-1) BIAS (6-8) : PRIMARY (3-1) PRI LEAKAGE IND. (SEC SHORTED) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ ---------------------- 1: 12.0 1: 6.0 1: 12.0 ---------------------- + 4% + 4% + 4% 3 -------- -------- 10.0 µHY 6 BIAS HIPOT: PRIMARY TO SECONDARY BIAS TO SECONDARY 4000 4000 --------------- --------------- Vrms Vrms AC LINE VOLTAGE 47/400 Hz BIAS VOLTAGE BIAS CURRENT SEC #1 OUTPUT ( 9,10 TO 12) SEC #1 POWER SEC #2 OUTPUT (9,10 TO 15,16) SEC#2 POWER 85 ------------------------------------------- 115 15 50 7.5 7.5 15.0 120 265 ------------------------------------------- Vac Vac mA Vdc VA Vdc VA 15,16 (15V) SECONDARY #2 12 (7.5V) SECONDARY #1 9,10 (RTN) 8 NOTE1: REINFORCED INSULATION SYSTEM, UL1950, IEC950, CSA-950: A) ALL MATERIALS MEET "UL", "CSA" & "IEC" REQUIREMENTS B) ALL MATERIAL RATED 130C OR BETTER. C) MARGIN WOUND BOTH SIDE BOBBIN. D) DESIGNED TO MEET >6.4mm CREEPAGE REQUIREMENTS. E) VARNISH FINISHED ASSEMBLY. FIGURE 2: PHYSICAL DIMENSIONS mm (INCHES) 46.0 (1.810) MAX 44.0 (1.732) MAX WHITE DOT OVER PIN#1 P TSD-1751 M YYWW 32.0 (1.260) MAX 10.0 (.394) 1 5.0 (.197) ∅ 1.0 (.039) 8 35.25 (1.388) 35.0 (1.378) 1 3 4 5 6 7 8 35.25 (1.388) 16 15 14 13 12 11 10 REV. 03/18/02 04/03/02 9 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MM DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .X + .25 +0 O 30' .XX + .15 DO NOT SCALE DRAWING DESCRIPTION OF CHANGES ORIGINAL RELEASE UPDATED DIMENSION TO 35.25mm, 1.0mm WAS 35.5mm, 0.8mm FLYBACK TRANSFORMER CONTROL DRAWING PREMIER P/N: TSD-1751 REVISION: 04/03/02 DRAWN BY: PETER PHAM REF: PWR-TOP249 SCALE: NONE SHEET: 1 OF 3 BY PP LL