TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC FIGURE 1: SCHEMATIC DIAGRAM SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS TOP224P. REFER TO APPLICATION CIRCUIT OF FIGURE 3. PARAMETER MIN. PRIMARY INDUCTANCE (2-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ 585 SPEC LIMITS TYP. MAX. 650 WHITE DOT ON TOP OF BOBBIN DENOTES PIN #1 SECONDARY #1 PRIMARY µHY 715 8 (+24V) (HOT RAIL) 1 UNITS 7 (+24V RETURN) (DRAIN) 2 TURN RATIO'S: BIAS (3-4) : PRIMARY (2-1) SEC #1 (8-7) : PRIMARY (2-1) SEC #2 (6-5) : PRIMARY (2-1) PRI LEAKAGE IND. (SEC SHORTED) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ HIPOT: PRIMARY & BIAS TO SECONDARIES APP CIRCUIT PARAMETERS: (1) AC LINE VOLTAGE 47/400 Hz SEC #1 OUTPUT VOLTAGE OUTPUT CURRENT CONTINUOUS SEC #1 OUTPUT VOLTAGE OUTPUT CURRENT CONTINUOUS PEAK CURRENT OUT, EACH SEC. LINE REGULATION (85 TO 265Vac) LOAD REGULATION 10-100% RIPPLE 1: 8.375 1: 4.250 1: 4.250 ---------------------- + 4% + 4% + 4% -------- -------- 44 µHY 3000 -------- -------- Vrms 85 -------+24.0 --------24.0 --------------0.20 0.20 50.0 265 Vac Vdc mA Vdc mA mAmps +% +% +mV 50 50 ----------------------------- +400 -400 +450 ---------------------- 6 (-24V RETURN) (+BIAS) 3 ---------------------- BIAS SECONDARY #2 (HOT RETURN) 4 5 (-24V) SHIELD 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 RD5 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-24208 M YYWW PIN #1 WHITE DOT 1 2 3 4 26.0 (1.024) MAX 18.8 (.740) MAX 2 3 5.0 (.197) MYLAR TAPE 7mm WIDE UL INSULATION SYMBOL AND MANUFACTURER IDENTIFICATION HERE 21.16 (.833) MAX 1 .100 (2.5) MIN CUFF WRAP BOTTOM HALF OF CORE 0.8 DIA. (.030) 4 4.0 (.158) TYP 15.0 (.591) 12.5 (.492) BOTTOM HALF OF CORE IS CUFF WRAPPED WITH MYLAR TO GUARANTEE >6.2mm PIN-CORE-PIN CREEPAGE REV. 06/24/98 02/18/99 04/28/99 DESCRIPTION OF CHANGES ORIGINAL RELEASE UPDATE PER SAMPLE UPDATE TO UL CLASS (B) 130 INSULATION SYSTEM EE25.4 (FEI25, FEE25, EE2425), 8-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-24208 REVISION: 04/28/99 ENGR: PETER PHAM REF: TOP224P SCALE: NONE SHEET: 1 OF6 BY PP PP MD APPLICATION NOTES Premier Magnetics' POL-24208 Switch Mode Transformer was designed for use with Power Integrations, Inc. PWRTOP224P 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-24208 transformer has been optimized to provide maximum power throughput. The TOPSwitch-II 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 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 20 watt application circuit utilizing Power Integrations TOP224 switching regulator in the flyback buck-boost configuration. The component values listed are intended for reference purposes only. FIGURE 3: TYPICAL APPLICATION CIRCUIT ALUMINUM ELECTROLYTIC FILTER CAPACITOR RATINGS: C2 : > 400V, Ripple Rated > 233mA @ 120Hz @ Max. Operating Temp. (Nichicon P/N URTSG470MRA, 105C) C8, C9 : > 50V, Ripple Rated > 550mA @ 100KHz @ Max. Op. Temp. (Panasonic P/N ECA1HFG221, 105C) C10, C11 : > 25V GOOD QUALITY LOW ESR TYPE (Panasonic P/N ECA1VFG221, 105C) PREMIER MAGNETICS PART NUMBERS: (REQUEST DATA SHEETS BY PART#) L1 = PMCU-0330 33mHy EMI/RFI CMC T1 = POL-24208 MAIN SWITCHING TRANSFORMER L2 = VTP-01001 10uHy, 1.0Amp INDUCTOR BR1 DF06M 600V, 1A EMI FILTER F1 3.1A 250v LINE 1 ~ 2 + C2 47 uF 400V C1 0.1uF 4 NEUT HOT RAIL +80 to 375Vdc 3 ~ C2, 47.0 uF, 400V Low Profile Type: Nichicon # UVS2G470MRA, 85C Nichicon # URT2G470MRA, 105C Diameter=18mm (.708) Length=25mm (.984) + 85-265Vac 50/60Hz L1 PMCU-0330 33mHY - C1 = 0.1uF 250Vac X2-Saftey Cap T1 POL-24208 CLAMP NETWORK 4 C C4 0.1uF DRAIN D C N/C N/C N/C N/C S S SOURCE 1/2 OF U3 4 E D4 MUR420 3 + C3 47uF 10V C5 & C6 = 250Vac Y-SAFTEY CAPS EMI FILTER C5 2.2nF C6 2.2nF C10 220uF 35V C11 220uF 35V RTN -24Vdc @ -0.80A L2 VTP-01001 10uH @ 1.0A CONTROL R1 6.8 R3 18.2K 1% R4 1.0K 1% 5 BIAS U1 POWER INT. PWR-TOP224P R5 390 2W R2 680 C9 220uF SEC2 50V 3 + 2 7 6 D2 1N4148 +24Vdc @ +0.80A C SEC1 2 L2 VTP-01001 10uH @ 1.0A 1 1/2 OF U3 A C8 + 220uF 50V PRI D1 MUR160 (BYV26C) U3 NEC PS2501-1 8 1 VR1 P6KE200A D3 MUR420 1 U2 C TL431 R A C7 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-24208 REVISION: 04/28/99 ENGR: PETER PHAM REF: TOP224P SCALE: NONE SHEET: 2 OF6