TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 O C FIGURE 1: SCHEMATIC DIAGRAM SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS PWR-TOP227Y. BIAS & SEC BIAS ARE USED IN FORWARD MODE. PARAMETER PRIMARY INDUCTANCE (3-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ SPEC LIMITS MIN. TYP. MAX. UNITS 900 1000 1100 µHY ---------------------- 1: 4.14 1: 19.33 1: 19.33 ---------------------- + 4% + 4% + 4% -------- -------- 12.0 µHY WHITE DOT DENOTES PIN #1 (HOT RAIL) 1 PRIMARY (DRAIN) 3 TURN RATIO'S: SEC#1 (11,12-9,10) : PRIMARY (3-1) SEC BIAS (8-7) : PRIMARY (3-1) BIAS (6-5) : PRIMARY (3-1) PRI LEAKAGE IND. (SEC SHORTED) 0.250Vrms @ 100 KHZ HIPOT: PRIMARY TO SECONDARIES BIAS TO SECONDARIES 3000 3000 --------------- --------------- Vrms Vrms DESIGN PARAMETERS: VOLTAGE DOUBLER DC INPUT VOLTS SECONDARY #1 @ 3.5A SEC BIAS @ 250mA FORWARD MODE PRI BIAS @ 25mA FORWARD MODE PEAK PRIMARY CURRENT REFLECTED VOLTAGE 210 -------9.0 9.0 --------------- -------29.0 --------------2.1 123 380 -------22.0 22.0 -------135 Vdc Vdc Vdc Vdc Amps Volts (+BIAS) 5 12V BIAS (HOT RETURN) 6 11,12 (+29V) SECONDARY #1 29V @ 3.5A 9,10 (29V RETURN) 8 (+10V) SECONDARY BIAS 10V @ 250mA 7 (10V RETURN) SECONDARY #2, PINS #12 & 11, #10 & 9 MUST BE RESPECTIVELY CONNECTED TOGETHER FOR PROPER OPERATION. I.E. CONNECTED AS ONE PARALLEL WINDING. 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. E) UL1950 & CSA-950 CERTIFIED: FILE #E162344. F) UL CLASS (B) 130 INSULATION SYSTEM PM130-R1, PM130-H1, PM130-H1A (UL FILE #E177139) OR ANY UL AUTHORIZED CLASS (B) INSULATION SYSTEM. FIGURE 2: PHYSICAL DIMENSIONS mm (INCHES) 12 11 10 9 8 7 P TSD-1056 M YWW PIN #1 WHITE DOT 1 2 3 4 5 6 41.50 (1.63) MAX CORE TAPED 31.00 (1.220) MAX UL INSULATION SYMBOL AND MANUFACTURER IDENTIFICATION HERE 37.00 (1.46) MAX 1 2 3 5.00 (.197) 4 5 0.8 DIA. (.032) 6 25.00 (.984) 4.0 (.157) MIN 22.5 (.886) REV. 08/04/97 10/22/97 04/17/98 07/22/98 04/19/99 DESCRIPTION OF CHANGES SEC #1 CHANGED FROM 12V TO 8V CHANGED ORDER OF WINDINGS & SEC #2 FROM 8V TO 10V CHANGED PRIMARY BIAS & SEC BIAS TO FORWARD MODE UPDATED MAX HEIGHT & WIDTH DIMENSIONS UPDATE TO UL CLASS (B) 130 INSULATION SYSTEM BY TO TO TO AS MD EI40, EE40, 12-PIN VERTICAL BOBBIN P Premier M Magnetics Inc. "INNOVATORS IN MAGNETICS TECHNOLOGY" UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MM DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .X + .25 + 0 O 30' .XX + .15 DO NOT SCALE DRAWING FLYBACK/FORWARD CONTROL DRAWING PREMIER P/N: TSD-1056 REVISION: 04/19/99 DRAWN BY: TOM O'NEIL REF: PWR-TOP227Y SCALE: NONE SHEET: 1 OF 5