TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC FIGURE 1: SCHEMATIC DIAGRAM SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS TOP226Y OR TOP204Y. REFER TO APPLICATION CIRCUIT OF FIGURE 3. PARAMETER MIN. SPEC LIMITS TYP. PRIMARY INDUCTANCE (3-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ 493 548 MAX. UNITS 603 µHY WHITE DOT ON BOBBIN DENOTES PIN #1 1 11 PRIMARY TURN RATIO'S: SEC (11-8) : PRIMARY (3-1) BIAS (6-5) : PRIMARY (3-1) PRI LEAKAGE IND. (SEC SHORTED) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ --------------- 1: 3.60 1: 7.20 --------------- + 4% + 4% -------- 20.0 25.0 µHY 3 SECONDARY 5 BIAS 8 6 HIPOT: PRIMARY TO SECONDARY BIAS TO SECONDARY APP CIRCUIT PARAMETERS: (1) AC LINE VOLTAGE 47/400 Hz OUTPUT VOLATGE OUTPUT CURRENT CONTINUOUS OUTPUT CURRENT PEAK LINE REGULATION (85 TO 265Vac) LOAD REGULATION 10-100% RIPPLE 3000 3000 --------------- --------------- Vrms Vrms 85 -------28.0 --------------0.20 0.20 50.0 265 Vac Vdc Amps Amps +% +% +mV 0.100 ----------------------------- 2.20 2.50 ---------------------- 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) 12 11 10 9 8 7 P POL-28022 M YYWW PIN #1 WHITE DOT 1 2 3 4 5 6 31.50 (1.240) MAX CORE TAPED 26.50 (1.043) MAX UL INSULATION SYMBOL AND MANUFACTURER IDENTIFICATION HERE 29.00 (1.142) MAX 1 2 3 5.00 (.197) 4 5 0.8 DIA. (.032) 6 25.00 (.984) 4.0 (.157) MIN 20.0 (.787) REV. 03/12/97 11/10/98 05/03/99 DESCRIPTION OF CHANGES UPDATED RELEASE UPDATED TO ADD UL 1950 & CE-950 APPROVAL & MARKING UPDATE TO UL CLASS (B) 130 INSULATION SYSTEM EE30 (FEE30A) -OR- EI30(FEI30), 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 TRANSFORMER CONTROL DRAWING PREMIER P/N: POL-28022 REVISION: 05/03/99 ENGR: TOM O'NEIL REF: TOP226/204 SCALE: NONE SHEET: 1 OF 6 BY TO AS MD APPLICATION NOTES Premier Magnetics' POL-28022 Switch Mode Transformer was designed for use with Power Integrations, Inc. TOP226 or TOP204Y 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-28022 transformer has been optimized to provide maximum power throughput. The 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 62 watt application circuit utilizing Power Integrations TOP226 switching regulator in the flyback buck-boost configuration. The component values listed are intended for reference purposes only. A properly sized heat sink for the TOP226 is required for efficient and reliable operation. The use of the VTK-01002 (Sendust type) output inductor will provide maximum efficiency -vs- the lower cost VTP-01002 (-52 powdered iron). Soft start capacitor Css is optional and application dependent. FIGURE 3: TYPICAL APPLICATION CIRCUIT F1 3.1A 250v BR1 KBP04M 400V, 1.5A EMI FILTER LINE 1 L1 PMCE-0330 33mHY ~ 2 + PREMIER MAGNETICS PART NUMBERS: (REQUEST DATA SHEETS BY PART#) L1 = PMCE-2330 33mHy EMI/RFI CMC T1 = POL-28022 MAIN SWITCHING TRANSFORMER L2 = VTP-01002 10uHy, 2.0A INDUCTOR HOT RAIL +106 to 375Vdc C1 220 uF 400V + 85-265Vac 50/60Hz C6 0.1uF 4 NEUT 3 ~ C6 = 0.1uF 250Vac X2-Saftey Cap T1 POL-28022 CLAMP NETWORK PRI D1 MUR160 4 6 SOURCE C4 0.1uF SEC R4 4.64K 1% C3 + 220uF 35V R2 1K R1 6.2 SOFT START KELVIN CONNECT CONTROL C +28Vdc @ 2.20A RTN 3 C5 47uF R3 47.3K 1% 8 5 E 1 1/2 OF U3 A 2 BIAS 1/2 OF U3 + DRAIN C2 + 2200uF 50V D2 1N4148 C PROPERLY SIZED HEAT SINK 11 L2 VTP-01002 10uH @ 2.0A PROPERLY SIZED HEAT SINK 3 NEC2501-H U1 POWER INT. TOP226Y or TOP204 D3 MUR820 1 VR1 P6KE200A U3 ALUMINUM ELECTROLYTIC FILTER CAPACITOR RATINGS: C1: > 400V, Ripple Rated > 580mA @ 120Hz @ Max. Operating Temp. (Nichicon P/N LLQ2G221MHSB, 85C) C2: > 50V, Ripple Rated > 2000mA @ 100KHz @ Max. Operating Temp. (Panasonic P/N ECA1HFG222, 105C) C3: > 35V, Ripple Rated > 200mA @ 100KHz @ Max. Operating Temp. (Panasonic P/N ECA1VFG221, 105C) - C7 & C8 = 250Vac Y-SAFTEY CAPACITORS EMI FILTER C7 2.2nF Css + 4.7uF C8 2.2nF 1 U2 C TL431 R A C9 0.1uF 8 6 HIGH VOLTAGE RETURN 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 TRANSFORMER CONTROL DRAWING PREMIER P/N: POL-28022 REVISION: 05/03/99 ENGR: TOM O'NEIL REF: TOP226/204 SCALE: NONE SHEET: 2 OF 6