FIGURE 1: SCHEMATIC DIAGRAM TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC UNIVERSAL INPUT OFF-LINE SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS TOP225Y I.C. PARAMETER PRIMARY INDUCTANCE (6-8) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ WHITE DOT DENOTES PIN #1 SPEC LIMITS MIN. TYP. MAX. UNITS 591 723 µHY 657 11 BIAS 2 10 8 SECONDARY TURN RATIO'S: SECONDARY (2-4) : PRIMARY (6-8) BIAS (11-10) : PRIMARY (6-8) PRI LEAKAGE IND. (SEC SHORTED) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ HIPOT: PRIMARY & BIAS TO SECONDARY DESIGN PARAMETERS: AC LINE VOLTAGE 47/400 Hz OUTPUT VOLTAGE OUTPUT CURRENT CONTINUOUS OUTPUT CURRENT PEAK TRANSFORMER TEMP RISE --------------- 1:3.524 1:6.727 --------------- + 3% + 3% -------- -------- 35.0 µHY 3000 -------- -------- Vrms 85 -------24.0 --------------20 265 Vac Vdc mA mA O C 0.0 --------------- 1.300 1.500 -------- 4 PRIMARY 6 NOTE1: REINFORCED INSULATION SYSTEM, UL1950, IEC950, CSA-950: A) ALL MATERIALS MEET "UL", "CSA" & "IEC" REQUIREMENTS B) TRIPLE BASIC INSULATED SECONDARY. C) VARNISH FINISHED ASSEMBLY. D) UL1950 & CSA-950 CERTIFIED: FILE #E162344. E) UL CLASS (B) 130 INSULATION SYSTEM PM130-R1, PM130-H1, PM130-H1A (UL FILE #E177139) OR ANY UL AUTHORIZED CLASS (B) INSULATION SYSTEM. FIGURE 2: PHYSICAL DIMENSIONS IN MM, (inches) 11 1 PIN#1 I.D. WHITE DOT 10 2 9 8 7 3 6 4 5 25.75 (1.014) MAX P TSD-975 M YYWW 1 5 2 3.0 (.118) 4.5 (.177) 20.0 (.787) 20.0 (.787) 1 UL INSULATION SYMBOL AND MANUFACTURER IDENTIFICATION HERE 17.00 (.670) MAX 4.85 (.191) 5.00 (.197) 4-PLCS 26.0 (1.024) MAX CORE TAPED 3 5 4 0.8 DIA. 11-PLCS 20.0 (.787) 3.75 (.148) 5-PLCS EPC25 11 10 9 C L 8 7 6 REV. 01/28/97 05/26/99 DESCRIPTION OF CHANGES UPDATED RELEASE (TOP214 TO TOP225) UPDATED TO UL CLAS (B) 130 INSULATION SYSTEM 18.75 (.738) P Premier M Magnetics Inc. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MM DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .X + .50 + 0 O 30' .XX + .25 DO NOT SCALE DRAWING TRANSFOMER CONTROL DRAWING PREMIER P/N: TSD-975 REVISION: 05/26/99 DRAWN BY: TOM O'NEIL REF: TOP225 SCALE: NONE SHEET: 1 OF 6 BY TO MD APPLICATION NOTES Premier Magnetics' TSD-975 Switch Mode Transformer was designed for use with Power Integrations, Inc. TOP225Y 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' TSD-975 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 33 watt application circuit utilizing Power Integrations TOP225Y switching regulator in the flyback buck-boost configuration. The component values listed are intended for reference purposes only. Soft start capacitor Css is optional depending on the specific application. FIGURE 3: TYPICAL APPLICATION CIRCUIT PREMIER MAGNETICS PART NUMBERS: (REQUEST DATA SHEETS BY PART#) L1 = PMCU-0330 33mHy EMI/RFI CMC T1 = TSD-975 MAIN SWITCHING TRANSFORMER L2 = VTP-01001 10uHy, 1.0Amp INDUCTOR F1 3.1A 250v BR1 DF06M 600V, 1A EMI FILTER LINE 1 L1 PMCU-0330 33mHY ~ 2 + ALUMINUM ELECTROLYTIC FILTER CAPACITOR RATINGS: +24V OUTPUT: C2 >35V, Ripple Rated > 1400mA @ 100KHz @ Max. Op. Temp. PANASONIC FA SERIES: LOW IMPEDANCE RADIAL SERIES C2 = 470uF, 35V = PANASONIC EEUFA1V471 C3 = 470uF, 35V = PANASONIC EEUFA1V471 HOT RAIL +70 to 375Vdc C1 47 uF 400V + 85-265Vac 50/60Hz C6 0.1uF 4 NEUT 3 ~ C1, 47.0 uF, 400V Low Profile Type: Nichicon # UVS2G470MRA, 85C Nichicon # URT2G470MRA, 105C Diameter=18mm (.708) Length=25mm (.984) - C6 = 0.1uF 250Vac X2-Saftey Cap CLAMP NETWORK 6 VR1 P6KE200A PRI D1 MUR160 (BYV26C) U3 NEC PS2501-1 SOURCE SEC C2 + 470uF 35V D2 1N4148 4 BIAS 10 C4 0.1uF 1/2 OF U3 A C C5 47uF C3 + 470uF 35V R2 680 R5 200 1/2W SOFT START KELVIN CONNECT PROPERLY SIZED HEAT SINK REQUIRED +24Vdc @ 1.3A RTN 2 R1 6.2 CONTROL R4 5.76K 1% 2 11 E R3 49.9K 1% 1 3 + DRAIN 1/2 OF U3 4 L2 VTP-01001 10uH @ 1.0A D3 MUR420 (BYV28-200) 8 C U1 POWER INT. TOP225Y T1 TSD-975 C7 & C8 = 250Vac Y-SAFTEY CAPS 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. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MM DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .X + .50 + 0 O 30' .XX + .25 DO NOT SCALE DRAWING TRANSFOMER CONTROL DRAWING PREMIER P/N: TSD-975 REVISION: 05/26/99 DRAWN BY: TOM O'NEIL REF: TOP225 SCALE: NONE SHEET: 2 OF 6