FIGURE 1: SCHEMATIC DIAGRAM TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC PARAMETER MIN. PRIMARY INDUCTANCE (2-1) VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ 2.12 SPEC LIMITS TYP. MAX. UNITS 2.59 mHY 2.35 WHITE DOT DENOTES PIN#1 (V+) 1 TURN RATIO'S: BIAS : PRIMARY (4-3 : 2-1) SEC#1 : PRIMARY (10-5 : 2-1) PRI LEAKAGE INDUCTANCE VOLTAGE = 0.250Vrms FREQUENCY = 100 KHZ --------------- 1:7.67 1:7.67 --------------- + 4% + 4% -------- -------- 80.0 µHY PRIMARY (DRAIN) 2 15/18V SECONDARY (ANODE) 3 5 (SEC RETURN) BIAS HIPOT PRIMARY & BIAS TO SECONDARY APP CIRCUIT PARAMETERS: (1) AC LINE VOLTAGE 47/400 Hz OUTPUT VOLTAGE OUTPUT CURRENT CONTINUOUS FOR 15V OUTPUT FOR 18V OUTPUT OUTPUT CURRENT PEAK FOR 15V OUTPUT FOR 18V OUTPUT LINE REGULATION (85 TO 265Vac) LOAD REGULATION 10-100% RIPPLE 3000 -------- -------- Vrms 85 -------- -------15 265 18 Vac Vdc 230 200 --------------- 350 300 mA mA ------------------------------------ --------------115 115 50.0 500 424 ---------------------- mA mA +% +% +mV (1) REFER TO APPLICATION CIRCUIT OF FIGURE 3. 10 9 8 7 P M PIN#1 WHITE DOT 1 3 (PRI RETURN) 4 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-H1A (UL FILE #E177139) OR ANY UL AUTHORIZED CLASS (B) INSULATION SYSTEM. 6 5 TSD-1055 YYWW 2 10 (ANODE) FIGURE 2: PHYSICAL DIMENSIONS mm (INCHES) 4 16.0 (.630) MAX 17.8 (.700) MAX CORE TAPED 31.1 (1.22) MAX UL INSULATION SYMBOL AND MANUFACTURER IDENTIFICATION HERE 0.6 DIA. (.024) 12.20 (.480) 10.5 (.413) 3.5 (.138) 1 2 3 4 12.2 (.480) 2.7 (.106) 10 9 8 7 6 5 REV. 07/01/97 02/17/98 06/03/99 DESCRIPTION OF CHANGES ORIGINAL RELEASE ADDED APPLICATION NOTES & CIRCUIT UPDATED TO UL CLASS (B) 130 INSULATION SYSTEM 13.5 (.531) EEL-16, 10-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: TSD-1055 REVISION: 06/03/99 ENGR: A. SANTOS REF: APPD: T. O'NEIL SHEET: 1 OF 4 BY AS AS MD APPLICATION NOTES Premier Magnetics' TSD-1055 Switch Mode Transformer was designed for use with Power Integrations, Inc. PWR-TOP210P 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-1055 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, 3.5 watt application circuit utilizing Power Integrations PWR-TOP210 switching regulator in the flyback buck-boost configuration. This circuit provides +15 Vdc or +18 Vdc at 230 mA (for 15V) or 200 mA (for 18V) continuous and is capable of >350 mA (for 15V) or >300 mA (for 18V) 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. Please consult our application department for assistance on the opto-coupler version. The component values listed are intended for reference purposes only. Resistor R1 may be adjusted up to 100 Ohms MAX. and down to 11 Ohms MIN. As R1 increases in value the output voltages will increase, and vice-versa, thus allowing some fine adjustment on the initial output voltage. The output clamp resistor R2 is necessary to prevent destructive output runaway under a no-load condition, and has been sized to clamp the output to approximately 10 Vdc under a no-load condition. FIGURE 3: TYPICAL APPLICATION CIRCUIT T1 TSD-1055 Vin 1 CLAMP NETWORK VR1 BZV87-C200 PRI L1 3.3uH D2 UF4002 +15/18Vdc 10 SEC#1 + D1 UF4005 2 C1 22nF 400V U1 POWER INT. PWR-TOP210P 5 4 6 3 7 2 8 1 C3 47uF 10V + 5 4 R3 6.8 C2 330uF 25V C3 100uF 20V RETURN D3 BAV21 R1 22 SEC #2 C4 100nF 3 VR2 1N5239B (for 15V output) 1N5242B (for 18V output) PRIMARY 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: TSD-1055 REVISION: 06/03/99 ENGR: A. SANTOS REF: APPD: T. O'NEIL SHEET: 2 OF 4