TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC FIGURE 1: SCHEMATIC DIAGRAM SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS TOP221P REFER TO APPLICATION CIRCUIT OF FIGURE 3 PARAMETER MIN. PRIMARY INDUCTANCE (2-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ 3.48 SPEC LIMITS TYP. MAX. 4.00 4.52 DOT ON BOBBIN DENOTES PIN #1 UNITS 1 mHY PRIMARY TURN RATIO'S: SECONDARY (8-5) : PRIMARY (2-1) BIAS (4-3) : PRIMARY (2-1) PRI LEAKAGE IND. (8-5 SHORTED) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ --------------- 1: 8.375 1:14.889 --------------- + 3% + 3% -------- -------- 120.0 µHY 2 8 SECONDARY 3 5 BIAS 4 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 3000 3000 --------------- --------------- Vrms Vrms 85 -------12.0 --------------1.50 5.00 50.0 265 Vac Vdc mA mA +% +% +mV 0.0 ----------------------------- 300 400 ---------------------- 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) WHITE DOT DENOES PIN#1 8 7 6 5 1 2 3 4 16.8 (.661) MAX CORE TAPED 3.5 (.137) MIN P M 15.5 (.610) MAX TSD-825 YYWW 1.3 (.051) 1 3.0 (.118) 3 2 UL INSULATION SYMBOL AND MANUFACTURER IDENTIFICATION HERE 14.5 (.571) MAX 3.8 (.150) ∅ 0.6 (.024) 4 11.0 (.433) EE16/EI16, 8-PIN HORIZONTAL 8 7 P Premier M Magnetics Inc. 6 5 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MM DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .X + .25 +0 O 30' .XX + .15 DO NOT SCALE DRAWING REV. 02/15/96 05/15/97 04/21/99 DESCRIPTION OF CHANGES CORRECTED PIN-PIN SPACING & MAX WIDTH UPDATED TO TOP221P, NO OTHER CHANGES UPDATE TO UL CLASS (B) 130 INSULATION SYSTEM TRANSFORMER CONTROL DRAWING PREMIER P/N: TSD-825 REVISION: 04/21/99 DRAWN BY: TOM O'NEIL REF: TOP221P SCALE: NONE SHEET: 1 OF 6 BY TO TO MD APPLICATION NOTES Premier Magnetics' TSD-825 Switch Mode Transformer was designed for use with Power Integrations, Inc. TOP221P 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-825 transformer has been optimized to provide maximum power throughput. The TOP2XX 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, 4 watt application circuit utilizing Power Integrations TOP221 switching regulator in the flyback buck-boost configuration. This circuit provides +12Vdc at 300mA continuous and is capable of 400mA peak for short periods of time. This circuit represents the lowest cost implementation and utilizes the bias winding for feedback control. As such the line & load regulation are worse than that which could be achieved by utilizing an opto-coupler to sense the actual outputs. The component values listed are intended for reference purposes only. Resistor R1 may be adjusted up to 100 Ohms and down to 10 Ohms. As R1 increases in value the output voltages will increase, and vice-versa, thus allowing some fine adjustment on the initial output voltage. The EMI/RFI capacitors C7 & C8 are shown for reference but may not be needed to meet EMI/RFI emmision specifications. FIGURE 3: TYPICAL APPLICATION CIRCUIT BR1 DF04S 400V, 1.0A EMI FILTER F1 1.5A 250v LINE 1 L1 PMCU-0220 22mHY ~ + 2 HOT RAIL +110 to 375Vdc C1, 22.0 uF, 400V Low Profile Type: Nichicon # UVS2G220MRA, 85C Nichicon # URT2G220MRA, 105C Diameter=18mm (.708) Length=20mm (.787) C1 22 uF 400V + 85-265Vac 50/60Hz C6 0.1uF 4 NEUT 3 ~ - PREMIER MAGNETICS PART NUMBERS: (REQUEST DATA SHEETS BY PART#) L1 = PMCU-0220 22mHy EMI/RFI CMC T1 = TSD-825 MAIN SWITCHING TRANSFORMER L2 = VTP-01001 10uHy, 1.0Amp INDUCTOR C6 = 0.1uF 250Vac X2-Saftey Cap CLAMP NETWORK 1 VR1 P6KE180A PRI D1 MUR160 8 2 R1 15 L2 VTP-01001 10uH @ 1.0A D3 MBR360 + D2 1N4148 SEC 4 5 C2 330uF 16V +12Vdc @ 300mA C3 + 100uF 16V RTN BIAS DRAIN U1 POWER INT. TOP221P D C N/C N/C N/C N/C S 3 T1 TSD-825 CONTROL S SOURCE + C5 47uF 10V C7 & C8 = 250Vac Y-SAFTEY CAPACITORS EMI FILTER C7 2.2nF C8 2.2nF 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: TSD-825 REVISION: 04/21/99 DRAWN BY: TOM O'NEIL REF: TOP221P SCALE: NONE SHEET: 2 OF 6