TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC PARAMETER PRIMARY INDUCTANCE (3-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ FIGURE 1: SCHEMATIC DIAGRAM SPEC LIMITS MIN. TYP. MAX. UNITS 135 165 µHY 150 WHITE DOT DENOTES PIN #1 14 (24v@4A) (HOT RAIL) 1 TURN RATIO'S: SEC #1 (14-13) : PRIMARY (3-1) SEC #2 (11-10) : PRIMARY (3-1) SEC #3 (9-8) : PRIMARY (3-1) BIAS (5-7) : PRIMARY (3-1) PRI LEAKAGE IND. (SEC SHORTED) 0.250Vrms @ 100 KHZ ----------------------------- 1 : 4.40 1 : 7.33 1 : 22.0 1: 7.33 ----------------------------- + 4% + 4% + 4% + 4% -------- -------- TDB µHY PRIMARY (DRAIN) 3 (+BIAS) 5 BIAS (HOT RETURN) 7 HIPOT: PRIMARY TO SECONDARIES BIAS TO SECONDARIES 3000 3000 --------------- --------------- Vrms Vrms FIGURE 2: PHYSICAL DIMENSIONS mm (INCHES) SECONDARY #1 13 11 (15v@1A) SECONDARY #2 10 9 (5v@1A) SECONDARY #3 8 NOTE1: A) ALL MATERIALS MEET "UL", "CSA" & "IEC" REQUIREMENTS B) ALL MATERIAL RATED 130C OR BETTER. C) MARGIN TAPE TO MEET >6.4mm CREEPAGE REQUIREMENTS. D) VARNISH FINISHED ASSEMBLY. P TSD-1961 M YYWW 48.0 (1.89) MAX 1 7 5.0 (.197) PIN #1 I.D. 1 2 3 4 5 6 7 22.5 (.886) 14 13 12 11 10 9 30.48 (1.20) MAX 8 REV. 03/01/04 36.5 (1.44) MAX 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, FLYBACK TRANSFORMER CONTROL DRAWING PREMIER P/N: TSD-1961 REVISION: 03/01/04 DRAWN BY: PETER PHAM REF: TOP-249 SCALE: NONE SHEET: 1 OF 3 BY PP APPLICATION NOTES Premier Magnetics TSD-1961 Switch Mode Transformer was designed for use with Power Integrations, Inc. PWRTOP249Y This conversion topology can provide isolated multiple outputs with efficiencies up to 90%. Premiers TSD-1961 transformer has been optimized to provide maximum power throughput. These switching regulators provide a very simple solution to off-line designs. The inductors and transformer used with the PWR-TOPXXX are critical to the performance of the circuit. They define the overall efficiency, output power and overall physical size. Below is a universal input high precision 116 watt application circuit utilizing Power Integrations PWR-TOP249 switching regulator in the flyback buck-boost configuration. The component values listed are intended for reference purposes only. Properly sized heat sinks for the TOP249Y & D3 as well as proper thermal management & board layout are critical requirements for efficient and reliable operation. FIGURE 3: TYPICAL APPLICATION CIRCUIT PREMIER MAGNETICS PART NUMBERS: (REQUEST DATA SHEETS BY PART#) T1 = TSD-1961 MAIN SWITCHING TRANSFORMER L1 = PMCE-0330 33mHy EMI/RFI CMC L2 = VTP-01005 10uHy, 5.0Amp INDUCTOR L3 = VTP-01001 10uHy, 1.0Amp INDUCTOR BR1 DF06M 600V, 1.0A EMI FILTER F1 3.1A 250v LINE L1 PMCE-0330 33mHY 1 + C1 330 uF 400V C6 0.1uF 4 NEUT HOT RAIL +110 to 375Vdc 3 ~ + 85-265Vac 50/60Hz ~ 2 ALUMINUM ELECTROLYTIC FILTER CAPACITOR RATINGS: +24V OUTPUT: C6 >50V & Ripple Rated > 4610mA @ 100KHz @ Max. Op. Temp. PANASONIC FU SERIES: LOW IMPEDANCE RADIAL SERIES 15V OUTPUT: C4>35V & Ripple Rated > 1200mA @ 100KHz @ Max. Op. Temp. PANASONIC FU SERIES: LOW IMPEDANCE RADIAL SERIES 5V OUTPUT: C2>16V & Ripple Rated > 1200mA @ 100KHz @ Max. Op. Temp. PANASONIC FU SERIES: LOW IMPEDANCE RADIAL SERIES D3 = MUR620 D4 = MBR3100 C1, 220.0 uF, 400V Nichicon # LLQ2G221MHSB, 85C - C6 = 0.1uF 250Vac X2-Saftey Cap 14 CONSIDER ADDING PARALLEL RC TO ZENER OR MOVE TO AN RCD CLAMP CLAMP NETWORK U3 .022 uF 400V D1 MUR460 11 3 9 C4 0.1uF U1 POWER INT. PWR-TOP248Y 13M D 3 S X F + 6.8 1 1/2 OF U3 A R3 10.0K 1% C R4 10.0K 1% 2 C3 + 16V RTN 1 U2 C9 0.1uF C TL431 R A 47 uF 16V +5.0Vdc @ 1.00A R2 510 T1 TSD-1961 .1 uF 50V 20.5M C5 + 35V L3 D4 SEC #2 C + RTN 8 PROPERLY SIZED HEAT SINK L D4 C2 16V 7 E +15.0Vdc @ 1.00A L3 10 BIAS 1/2 OF U3 RTN C4 35V 5 C C7 + 50V 13 PRI 4 + C6 50V D2 1N4148 NEC2501-H 2M D3 1 VR1 P6KE250A +24.0Vdc @ 4.00A L2 8 6 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-1961 REVISION: 03/01/04 DRAWN BY: PETER PHAM REF: TOP-249 SCALE: NONE SHEET: 2 OF 3