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 420 SPEC LIMITS TYP. 460 MAX. UNITS 500 µHY WHITE DOT DENOTES PIN #1 1 PRIMARY #1 2 PRIMARY #2 TURN RATIO'S: SEC #1 (10-9) : PRIMARY (3-1) SEC #2 (12-11) : PRIMARY (3-1) SEC #2 (14-13) : PRIMARY (3-1) SEC #2 (16-15) : PRIMARY (3-1) BIAS (6-8) : PRIMARY (3-1) PRI LEAKAGE IND. (SEC SHORTED) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ 3 ------------------------------------ 1: 7.33 1: 7.33 1: 8.8 1: 14.67 1: 8.8 ------------------------------------ + 4% + 4% + 4% + 4% + 4% 6 -------- -------- 20 µHY 8 BIAS 16 (8V) SECONDARY #4 15 14 (15V) SECONDARY #3 13 12 (18V) SECONDARY #2 11 10 (18V) HIPOT: PRIMARY TO SECONDARY BIAS TO SECONDARY 4000 4000 --------------- --------------- Vrms Vrms AC LINE VOLTAGE 47/400 Hz BIAS VOLTAGE SECONDARY #1 & #2 SECONDARY #3 SECONDARY #4 200 --------------------------- 240 15 18 15 8 265 ----------------------------- Vac VDC VDC VDC VDC SECONDARY #1 9 NOTE1: REINFORCED INSULATION SYSTEM, UL1950, IEC950, CSA-950: A) ALL MATERIALS MEET "UL", "CSA" & "IEC" REQUIREMENTS B) TRIPLE BASIC INSULATED SECONDARY. C) DESIGNED TO MEET >6.2mm CREEPAGE REQUIREMENTS. D) 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-1740 M YYWW 32.0 (1.260) MAX 10.0 (.394) 1 5.0 (.197) ∅ 0.8 (.032) 8 35.0 (1.377) 35.0 (1.378) 1 3 4 5 6 7 8 35.5 (1.398) REV. 02/05/02 03/25/02 06/11/02 16 15 14 13 12 11 10 DESCRIPTION OF CHANGES ORIGINAL RELEASE UPDATED RELEASE NEW DESIGN REV 9 EER35L, 16-PIN HORIZONTAL BOBBIN UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MM DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .X + .25 +0 O 30' .XX + .15 DO NOT SCALE DRAWING FLYBACK TRANSFORMER CONTROL DRAWING PREMIER P/N: TSD-1740 REVISION: 06/11/02 DRAWN BY: PETER PHAM REF: PWR-TOP246 SCALE: NONE SHEET: 1 OF 3 BY PP LL PP