TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC FIGURE 1: SCHEMATIC DIAGRAM SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS PWR-TOP248Y. REFER TO APPLICATION CIRCUITS OF FIGURE 3. PARAMETER PRIMARY INDUCTANCE (3-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ SPEC LIMITS MIN. TYP. MAX. UNITS 180 220 µHY 200 NOTCH DENOTES PIN #1 1 PRI #1A TURN RATIO'S: SEC#2 (9-7) : PRIMARY (3-1) EC#1 (12-11) : PRIMARY (3-1) BIAS (5-6) : PRIMARY (3-1) PRI LEAKAGE IND. (SEC SHORTED) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ HIPOT: 50/60Hz, 1 Minute Minimum PRIMARY TO SECONDARY BIAS TO SECONDARY ---------------------- 1: 4.33 1: 26 1: 8.66 ---------------------- + 4% + 4% + 4% -------- -------- TBD µHY 3750 3750 FIGURE 3 CIRCUIT PARAMETERS: (1) AC LINE VOLTAGE 47/400 Hz OUTPUT VOLTAGE #2 OUTPUT CURRENT CONTINUOUS #2 OUTPUT VOLTAGE #1 OUTPUT CURRENT CONTINUOUS #1 LOAD REGULATION 10-100% --------------- --------------- 12 (+5V@3A) SECONDARY #1 3 11 5 9 (+33V@3A) PRI #1B SECONDARY #2 6 7 Vrms Vrms NOTE1: 85 0.10 0.10 -------- -------33.0 -------5.0 -------0.20 265 3.00 3.00 -------- Vac Vdc Amps Vdc Amps +% 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. (1) REFER TO APPLICATION CIRCUIT OF FIGURE 3 FIGURE 2: PHYSICAL DIMENSIONS mm (INCHES) 1.46 (37.0) MAX 1.50 (38.1) MAX P TSD-1869 M YYWW .15 (3.9) 1.26 (32.0) MAX .031 (.80) .100 (2.54) MIN CORE TAPED .874 (22.2) .350 (8.89) REMOVE PIN #2 6 1 PIN#1 ID .874 (22.2) 12 .200 (5.08) 7 REV. 06/03/03 1.000 (25.40) 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 BY PP FLYBACK TRANSFORMER CONTROL DRAWING PREMIER P/N: TSD-1869 REVISION: 06/03/03 DRAWN BY: PETER PHAM REF: PWR-TOP248Y SCALE: NONE SHEET: 1 OF 4 APPLICATION NOTES Premier Magnetics' TSD-1869 Switch Mode Transformer was designed for use with Power Integrations, Inc. PWRTOP248Y off-line PWM switching regulator in the Flyback Buck-Boost circuit configuration. This conversion topology can provide isolated multiple outputs with efficiencies up to 85%. Premiers' TSD-1869 transformer has been optimized to provide maximum power throughput. The PWR-TOPXXX series from Power Integrations, Inc. are self contained 132KHz controlled PWM switching regulators. This series contains all necessary functions for an off-line switched mode control DC power source. 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 115 watt application circuit utilizing Power Integrations PWR-TOP248 switching regulator in the flyback buck-boost configuration. The circuit and it's component values listed are intended for reference purposes only. PREMIER MAGNETICS PART NUMBERS: (REQUEST DATA SHEETS BY PART#) T1 = TSD-1869 MAIN SWITCHING TRANSFORMER L1 = PMCE-0160 16mHy 1.5A EMI/RFI CMC L2 = VTP-01005 [email protected] INDUCTOR L3 = VTP-01002 [email protected] INDUCTOR FIGURE 3B: TYPICAL APPLICATION CIRCUIT EMI FILTER F1 3.5A L1 PMCE-0160 16mHY 1 LINE 85-265Vac 50/60Hz BR1 DF04M 400V, 1.0A 2 + 4 NEUT 3 - C6 = 0.1uF 250Vac X2-Saftey Cap CLAMP NETWORK T1 TSD-1869 1 C15 0.10uF VR1 P6KE200A VR3 P6KE200A 8K 10W D1 MUR160 VR2 P6KE200A U3 11 5 9 C7 0.1uF 1/2 OF U3 6 E 3 C8 47uF L3 VTP-01002 8uH @ 3.0A + D3 MUR620 +5.0Vdc @ 3.0A C3 100uF 25V RTN L2 VTP-01005 10uH @ 5.0A PROPERLY SIZED HEAT SINK C2,C3 + 1000uF 50V BIAS + SOURCE PRI 4 D2 MBR1045 C2 + 1000uF 25V D2 1N4148 C DRAIN 12 3 NEC2501-H U1 POWER INT. TOP248Y PROPERLY SIZED HEAT SINK C5 330 uF 400V + C6 0.1uF + 1 1/2 OF U3 A R3 24.4K 1% C R4 2K 1% 2 SEC +33Vdc @ 3.0A + C4 470uF 50V RTN 7 R4 6.2 R2 680 KELVIN CONNECT R5 390 1W CONTROL U2 1 C TL431 R HIGH VOLTAGE RETURN A C9 0.1uF 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-1869 REVISION: 06/03/03 DRAWN BY: PETER PHAM REF: PWR-TOP248Y SCALE: NONE SHEET: 2 OF 4