TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC FIGURE 1: SCHEMATIC DIAGRAM SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS PWR-TOP202YAI. REFER TO APPLICATION CIRCUIT OF FIGURE 3. (Equivalent to T1202 on PWR-ST202A Demo Board) PARAMETER PRIMARY INDUCTANCE (2-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ SPEC LIMITS MIN. TYP. MAX. UNITS 558 µHY 620 682 WHITE DOT ON TOP OF BOBBIN DENOTES PIN #1 1 PRIMARY TURN RATIO'S: SECONDARY (8-7) : PRIMARY (2-1) BIAS (3-4) : PRIMARY (2-1) PRI LEAKAGE IND. (7-8 SHORTED) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ HIPOT: PRIMARY TO SECONDARY BIAS TO SECONDARY APP CIRCUIT PARAMETERS: (1) AC LINE VOLTAGE 47/400 Hz OUTPUT VOLTAGE OUTPUT CURRENT CONTINUOUS OUTPUT CURRENT PEAK LINE REGULATION (85 TO 265Vac) LOAD REGULATION 10-100% RIPPLE 8 2 --------------- 1:10.80 1: 7.71 --------------- + 3% + 3% -------- -------- 15.0 µHY SECONDARY 3 7 BIAS 4 3000 3000 --------------- --------------- Vrms Vrms 85 -------7.5 --------------0.20 0.20 50.0 265 Vac Vdc Amps Amps +% +% +mV 0.0 ----------------------------- 2.0 3.0 ---------------------- 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. (1) REFER TO APPLICATION CIRCUIT OF FIGURE 3. FIGURE 2: PHYSICAL DIMENSIONS mm (INCHES) 8 7 6 NOTE2: A) BOTTOM HALF OF CORE IS CUFF WRAPPED PRIOR TO ASSEMBLY. THIS GAURANTEES 6.2mm CREEPAGE PIN-CORE-PIN 5 P POL-07020 M YYWW PIN #1 WHITE DOT 1 2 3 4 23.00 (.906) MAX CORE TAPED .157 (4.0) MIN 18.00 (.709) MAX MYLAR TAPE 7mm WIDE UL INSULATION SYMBOL AND MANUFACTURER IDENTIFICATION HERE 21.00 (.827) MAX 1 2 3 5.00 (.197) CUFF WRAP BOTTOM HALF OF CORE 0.8 DIA. (.032) 4 4.0 (.157) MIN 12.50 (.492) BOTTOM HALF OF CORE IS CUFF WRAPPED WITH MYLAR TO GUARANTEE 6.2mm PIN-CORE-PIN CREEPAGE REV. 09/26/95 12/20/95 05/06/99 DESCRIPTION OF CHANGES UPDATED DIMENSIONS, ADDED MARGIN TAPE TO BIAS NOTE D. ADDED STEP TO SMOOTH SOLDER JOINTS TO MEET 11.20mm MIN PIN-PIN UPDATED TO UL CLASS (B) 130 INSULATION SYSTEM BY TO TO MD EI22/19/6, 8-PIN VERTICAL BOBBIN P Premier M Magnetics Inc. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MM DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .X + .25 +0 O 30' .XX + .15 DO NOT SCALE DRAWING TRANSFORMER CONTROL DRAWING PREMIER P/N: POL-07020 REVISION: 05/06/99 DRAWN BY: TOM O'NEIL REF: PWR-TOP202YAI SCALE: NONE SHEET: 1 OF 6 APPLICATION NOTES Premier Magnetics' POL-07020 Switch Mode Transformer was designed for use with Power Integrations, Inc. PWRTOP202YAI three terminal off-line PWM switching regulator in the Flyback Buck-Boost circuit configuration. This conversion topology can provide isolated multiple outputs with efficiencies up to 90%. Premiers' POL-07020 transformer has been optimized to provide maximum power throughput. The PWR-TOPXXX series from Power Integrations, Inc. are self contained 100KHz three terminal voltage 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 15 watt application circuit utilizing Power Integrations PWR-TOP202 switching regulator in the flyback buck-boost configuration. The component values listed are intended for reference purposes only. The soft start capacitor Css is optional depending on the specific application. Simpler topology is possible depending on the line/load regulation required. FIGURE 3: TYPICAL APPLICATION CIRCUIT F1 3.15A LINE 85-265Vac 50/60Hz 1 L1 PMCU-0330 33mHY +120-375Vdc PREMIER MAGNETICS PART NUMBERS: (REQUEST DATA SHEETS BY PART#) L1 = PMCU-0330 33mHy EMI/RFI COMMON MODE CHOKE T1 = POL-07020 MAIN SWITCHING TRANSFORMER L2 = VTK-01002 10uHy, 2.0Amp INDUCTOR 2 C6 0.1uF 4 BR1 Vrrm = 400V Io = 1.0A 3 C6 = 0.1uF 250Vac X2-Saftey Cap C1 47.0 uF 400V 1 CLAMP NETWORK VR1 P6KE200 D1 MUR160 8 + NEUT EMI FILTER C1, 47.0 uF, 400V Low Profile Type: Nichicon # UVS2G470MRA, 85C Nichicon # URT2G470MRA, 105C Diameter=18mm (.708) Length=25mm (.984) PRI C2 + 1000uF 35V 2 SECONDARY T1 POL-07020 3 C5 47uF SOURCE + DRAIN R4 20.0K 1% R5 10.0K 1% + C3 220uF 25V 5 U3 1 MOC8101 C4 0.1uF R3 6.2 +7.5Vdc @ 2.0A RTN 7 D3 1N4148 U1 POWER INT. PWR-TOP202YAI L2 VTK-01002 10uH @ 2.0A D2 MUR610CT C BIAS 4 C E 4 KELVIN CONNECT R2 200 1/2W A 2 R1 510 CONTROL SOFT START C7 & C8 = 250Vac Y-SAFTEY CAPACITORS EMI FILTER C7 2.2nF C8 2.2nF Css 4.7uF + 1 U2 C TL431 R A C9 0.1uF 8 6 HIGH VOLTAGE RETURN P Premier M Magnetics Inc. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MM DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .X + .25 +0 O 30' .XX + .15 DO NOT SCALE DRAWING TRANSFORMER CONTROL DRAWING PREMIER P/N: POL-07020 REVISION: 05/06/99 DRAWN BY: TOM O'NEIL REF: PWR-TOP202YAI SCALE: NONE SHEET: 2 OF 6