TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC FIGURE 1: SCHEMATIC DIAGRAM SWITCHING TRANSFORMER DESIGNED FOR USE WITH POWER INTEGRATIONS PWR-TOP104YAI REFER TO APPLICATION CIRCUIT OF FIGURE 3 PARAMETER MIN. PRIMARY INDUCTANCE (2-1) 100 KHZ @ 0.250Vrms 1700 SPEC LIMITS TYP. MAX. 2000 2300 WHITE DOT DENOTES PIN #1 (-48 RTN) 1 UNITS 9 (-118V RTN) µHY PRIMARY TURN RATIO'S: PRIMARY (2-1) : SECONDARY (9-7) BIAS (4-5) : PRIMARY (2-1) --------------- 1: 1.97 1: 3.67 --------------- + 3% + 3% PRI LEAKAGE IND. (SEC SHORTED) 100 KHZ @ 0.250Vrms -------- 20.0 30.0 µHY DCR: PRIMARY (2-1) DCR: BIAS (4-5) DCR: SECONDARY (9-7) ---------------------- ---------------------- 1.65 0.65 9.50 Ohms Ohms Ohms HIPOT: PRIMARY & BIAS TO SECONDARY 500 -------- -------- Vrms APP CIRCUIT PARAMETERS: (1) DC INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT CONTINUOUS (2) LINE REGULATION (-42 TO -58Vac) LOAD REGULATION (0-100%) RIPPLE -42 -------10 ---------------------- -48 -118.0 -------4.00 5.00 -------- -64 -------130 --------------50.0 Vdc Vdc mA +% +% +mV (DRAIN) 2 SECONDARY (ANODE) 4 BIAS 7 (-118Vdc) (-48Vdc) 5 NOTE1: REINFORCED INSULATION SYSTEM, UL1950, IEC950, CSA-950: A) ALL MATERIALS MEET "UL", "CSA" & "IEC" REQUIREMENTS B) VARNISH FINISHED ASSEMBLY. C) UL1950 & CSA-950 CERTIFIED: FILE #E162344. D) UL CLASS (B) 130 INSULATION SYSTEM PM130-H1A (UL FILE #E177139) OR ANY UL AUTHORIZED CLASS (B) INSULATION SYSTEM. (1) REFER TO APPLICATION CIRCUIT OF FIGURE 3. (2) OUTPUT CLAMP RESISTOR R5 PROVIDES THE 10mA MINIMUM REQUIRED LOAD. FIGURE 2: PHYSICAL DIMENSIONS mm (INCHES) PIN #10 IS CUT-OFF PIN#1 I.D. WHITE DOT 10 9 8 7 6 1 2 3 4 5 26.2 (1.031) MAX CORE TAPED 4.0 (.157) P M TSD-974 YYWW 26.7 (1.051) MAX UL INSULATION SYMBOL AND MANUFACTURER IDENTIFICATION HERE CORE TAPED 15.9 (.626) MAX ∅ 0.8 (.03) ∅ 0.8 (.03) 5.0 (.197) 22.5 (.886) MAX REV. 01/06/97 03/11/97 04/01/97 06/17/98 05/26/99 DESCRIPTION OF CHANGES ORIGINAL RELEASE UPDATED RELEASE, CORRECTED HEIGHT DIMENSION UPDATED MAX DCR SPECS. UPDATED RELEASE, CORRECTED HEIGHT DIMENSION UPDATED TO UL CLASS (B) 130 INSULATION SYSTEM BY AS AS AS AS MD EFD25, 10-PIN 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-974 REVISION: 05/26/99 ENGR: AL SANTOS REF: PWR-TOP104YAI APPD: TOM O'NEIL SHEET: 1 OF 4 APPLICATION NOTES Premier Magnetics' TSD-974 Switch Mode Transformer was designed for use with Power Integrations, Inc. PWRTOP104YAI 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-974 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 dc/dc and direct off-line switched mode DC power sources. These switching regulators provide a very simple solution to flyback 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 -48Vdc input precision 16W watt application circuit utilizing Power Integrations PWR-TOP104YAI switching regulator in the flyback buck-boost configuration. If the 118V output is to be run unload a clamp resistor (R5) should be added to prevent possible destructive voltage runaway. The component values listed are intended for reference purposes only. FIGURE 3: TYPICAL APPLICATION CIRCUIT PREMIER MAGNETICS PART NUMBERS: (REQUEST DATA SHEETS BY PART#) T1 = TSD-974 MAIN SWITCHING TRANSFORMER L1 = VTP-01001 10uHy, 1.0Amp INDUCTOR -48V RTN CLAMP NETWORK + -42 to -64Vdc C1 47 uF 100V VR1 P6KE200A D1 UF4004 1 T1 TSD-974 D3 UF4004 PRI RTN 8 2 C2 + 100uF 160V D2 1N4148 VR2 1N6000C 10V L2 VTP-01001 10uH @ 1.0A 3 C4 0.1uF SEC 5 R5 10K 2W C3 + 100uF 160V -118Vdc @130mA BIAS U1 POWER INT. PWR-TOP104YAI SOURCE C5 47uF + DRAIN 4 R1 10 C6 1.0nF 200V KELVIN CONNECT CONTROL 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-974 REVISION: 05/26/99 ENGR: AL SANTOS REF: PWR-TOP104YAI APPD: TOM O'NEIL SHEET: 2 OF 4