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Design Example Report
Title Specification Application Author Document Number Date Revision 19.3 W Wide Range Flyback Power Supply using TOP243Y Input: 207 - 400 VAC Outputs: +14 V / 1.2 A; +5 V / 0.5 A Oven Control Power Integrations Applications Department DER-105 October 26, 2005 1.0
Summary and Features * * * * * * StackFET(R) Flyback Topology delivers full load over extremely wide input AC voltage range Very good Cross Regulation without using Linear Regulators 132 kHz Switching Frequency with jitter to reduce conducted EMI Auto-restart function for automatic and self-resetting open-loop, overload and short-circuit protection Built-in Hysteretic thermal shutdown at 135C EcoSmart for extremely low standby power consumption <500 mW at 265 VAC
The products and applications illustrated herein (including circuits external to the products and transformer construction) may be covered by one or more U.S. and foreign patents or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations' patents may be found at www.powerint.com.
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
Table Of Contents
Introduction................................................................................................................. 3 Power Supply Specification ........................................................................................ 4 Schematic................................................................................................................... 5 Circuit Description ...................................................................................................... 6 4.1 Input EMI Filtering ............................................................................................... 6 4.2 TOPSwitch Primary ............................................................................................. 6 4.3 Output Rectification ............................................................................................. 6 4.4 Output Feedback................................................................................................. 6 5 PCB Layout ................................................................................................................ 7 6 Bill Of Materials .......................................................................................................... 8 7 Transformer Specification........................................................................................... 9 7.1 Electrical Diagram ............................................................................................... 9 7.2 Electrical Specifications....................................................................................... 9 7.3 Materials.............................................................................................................. 9 7.4 Transformer Build Diagram ............................................................................... 10 7.5 Transformer Construction.................................................................................. 10 8 Transformer Spreadsheets....................................................................................... 11 9 Performance Data .................................................................................................... 14 9.1 Efficiency........................................................................................................... 14 9.2 No-load Input Power.......................................................................................... 14 9.3 Regulation ......................................................................................................... 15 9.3.1 Load ........................................................................................................... 15 9.3.2 Line................................................................................................................ 15 10 Thermal Performance ........................................................................................... 16 11 Waveforms............................................................................................................ 17 11.1 Drain Voltage and Current, Normal Operation .................................................. 17 11.2 Output Voltage Start-up Profile ......................................................................... 17 11.3 Drain Voltage and Current Start-up Profile........................................................ 18 11.4 Load Transient Response (75% to 100% Load Step) ....................................... 19 11.5 Output Ripple Measurements............................................................................ 20 11.5.1 Ripple Measurement Technique ................................................................ 20 11.5.2 Measurement Results ................................................................................ 21 12 Conducted EMI ..................................................................................................... 22 13 Revision History .................................................................................................... 23 1 2 3 4
Important Notes: Although this board is designed to satisfy safety isolation requirements, the engineering prototype has not been agency approved. Therefore, all testing should be performed using an isolated source to provide power to the prototype board. Design Reports contain a power supply design specification, schematic, bill of materials, and transformer documentation. Performance data and typical operation characteristics are included. Typically only a single prototype has been built.
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
1 Introduction
This document is an engineering report describing a wide-range non-isolated StackFET(R) Flyback converter using TOPSwitch-GX TOP243Y. The document contains the power supply specification, schematic, bill-of-materials, transformer documentation, printed circuit layout, and performance data.
Figure 1 - Populated Circuit Board Photograph
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
2 Power Supply Specification
Description Input Voltage Frequency No-load Input Power (230 VAC) Output Output Voltage 1 Output Ripple Voltage 1 Output Current 1 Output Voltage 2 Output Ripple Voltage 2 Output Current 2 Total Output Power Continuous Output Power Peak Output Power Efficiency Environmental Conducted EMI Safety Surge
Meets CISPR22B / EN55022B Designed to meet IEC950, UL1950 Class II
Symbol VIN fLINE
Min 207 47
Typ
Max 400 64 0.3 15.4
Units VAC Hz W V mV A V mV A
Comment
2 Wire - no P.E.
50/60
VOUT1 VRIPPLE1 IOUT1 VOUT1 VRIPPLE1 IOUT1
12.6
14 1.2 5 0.5
10% 20 MHz bandwidth 5% 20 MHz bandwidth
4.75
5.25
POUT POUT_PEAK
19.3 19.3 79
W W %
Measured at POUT (19.3 W), 25 oC
4
kV
Surge Ambient Temperature TAMB
3 0 85
kV
o
1.2/50 s surge, IEC 1000-4-5, Series Impedance: Differential Mode: 2 Common Mode: 12 100 kHz ring wave, 500 A short circuit current, differential and common mode Free convection, sea level
C
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
3 Schematic
Figure 2 - Schematic
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
4 Circuit Description
4.1 Input EMI Filtering AC input power is rectified and filtered by D1-D4 to produce a DC voltage across the series stacked high voltage electrolytic capacitors C12 and C13. R1 and R2 help maintain voltage equalization across the series connected capacitors. 4.2 TOPSwitch Primary The rectified high voltage DC is applied to the transformer T3 primary winding. The other end of the primary winding is connected to a high voltage MOSFET (Q1) that is cascade connected to the Drain of TOPSwitch-GX (U1). This configuration is called StackFet. VR3 clamps the maximum Drain-Source voltage across TOPSwitch to less than 600 V. VR2 ensures that the maximum Gate-Source voltage of Q1 does not exceed 15 V. R3 and R4 provide bias to enhance the gate of Q1 when its Source is switched low by the Drain of U1. VR1 and D5 clamp the leakage inductance spike to limit the effective voltage across Q1 and U1 to about 740 V pk at 400 VAC input. There is no Bias winding necessary, because of the non-isolated topology the Bias voltage is taken from the 14V output from the secondary side. 4.3 Output Rectification D6 and D7 along with capacitors C4 and C5 are used to rectify and filter the two output secondary windings of T3. 4.4 Output Feedback A voltage divider consisting of resistors R17, R16 and R15 monitors the voltage on the 14 V and 5 V outputs. The resistor values are weighted so that the voltage feedback loop is controlled mostly be the 5 V output, with some contribution from the 14 V output. Sharing the voltage regulation control between the two outputs in this manner improves the cross regulation for the 14 V output at the expense of a slight change in the regulation of the 5 V output. The voltage from R17, R16 and R15 is applied to the reference pin of the shunt regulator of U3. These resistor values and the reference voltage of U2 are used to set the output voltages of the supply. The Optocoupler usually used for isolation in the feedback circuit is replaced by a simple PNP Transistor Q2, which provides the feedback current to TOPSwitch. Note: If gain needs to be reduced, insert a ~220 resistor in series with Q2's emitter.
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
5 PCB Layout
Figure 3 - Printed Circuit Layout
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
6 Bill Of Materials
Item Qty Value 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 1 1 1 2 1 2 1 4 1 1 1 1 1 1 1 1 2 2 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 100 nF 470 uF 220 uF 100 nF 47 uF 47 uF 10uF 1N4007 UF4006 SB260 UF5402 1N4148 3.15 A J IRFBC30 2N3906 2.2 M 1M 1M 6.8 10 9.09 k 470 3.3 k 10 k 12k 240k 27mH EF20 TOP243Y TL431 1N5245B P4KE550 Heatsink Description Part Reference Mfg Vishay United Chemi-Con United Chemi-Con Panasonic United Chemi-Con Panasonic Panasonic 1N4007 UF4006 SB260 UF5402 1N4148 3,701,315,041 298 2N3906 CFR-50JB-2M2 CFR-50JB-1M0 CFR-25JB-1M0 CFR-25JB-6R8 CFR-50JB-10R MFR-25FBF-9K09 CFR-25JB-470R CFR-25JB-3K3 MFR-25FBF-10K0 MFR-25FBF-12K MFR-25FBF-240K B82731T2651A020 TOP243Y TL431CLP P6KE170A 1N5245B P4KE550A Vishay Vishay Vishay Vishay Wickman Alpha Fairchild Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Epcos Custom Power Integrations Texas Instruments Vishay Microsemi Vishay Mfg Part Number 2222 338 10104 LXZ35VB471MJ20LL LXZ35VB221MH15LL ECU-S1H104KBB KME16VB47RM5X11LL 100 nF, 440VAC, Film, X2 C1 470 uF, 35 V, Electrolytic, Low ESR, 52 mOhm, (10 x 20) C4 220 uF, 35 V, Electrolytic, Low ESR, 90 mOhm, (8 x 15) C5 100 nF, 50 V, Ceramic, X7R 47 uF, 16 V, Electrolytic, Gen. Purpose, (5 x 11) 47 uF, 400 V, Electrolytic, High Ripple, 105C 10uF, 25V, Electrolytic, Gen. Purpose 1000 V, 1 A, Rectifier, DO-41 600 V, 1 A, Ultrafast Recovery, 75 ns, DO-41 60 V, 2 A, Schottky, DO-204AC 75 V, 300 mA, Fast Switching, DO-35 3.15 A, 250V,Fast, TR5 Wire Jumper, Non insulated, 22 AWG, 0.3 in 600 V, 3.6 A, 2.2 Ohms, N-Channel, TO-220AB PNP, Small Signal BJT, 40 V, 0.2 A, TO-92 2.2 M, 5%, 1/2 W, Carbon Film 1 M, 5%, 1/2 W, Carbon Film 1 M, 5%, 1/4 W, Carbon Film 6.8 R, 5%, 1/4 W, Carbon Film 10 R, 5%, 1/2 W, Carbon Film 9.09 k, 1%, 1/4 W, Metal Film 470 R, 5%, 1/4 W, Carbon Film 3.3 k, 5%, 1/4 W, Carbon Film 10 k, 1%, 1/4 W, Metal Film 12 k, 1%, 1/4 W, Metal Film 240 k, 1%, 1/4 W, Metal Film Common Mode Choke, 27mH, 0.65A Bobbin EF20, 8-Pin, Horizontal TOPSwitch-GX, TOP243Y, TO220-7C C6 C11 C7 C12 C13 C14 D5 D6 D8 F1 JP1 Q1 Q2 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R12 R13 R15 R16 R17 T2 T3 U1 VR1 VR2 VR3 HS1
D1 D2 D3 D4 Vishay
200 V, 3 A, Ultrafast Recovery, 50 ns, DO-201AD D7
International Rectifier IRFBC30
2.495 V Shunt Regulator IC, 2%, 0 to 70C, TO-92 U2 15 V, 5%, 500 mW, DO-35 200 V, 5 W, 5%, DO204AC (DO-15)
P6KE170A 170 V, 5 W, 5%, TVS, DO204AC (DO-15)
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
7 Transformer Specification
7.1 Electrical Diagram
1
8 14V Winding 7 Turns 2*0.4 mm Heavy Nyleze
Primary Winding 73 Turns 0.28 mm Heavy Nyleze
7 6 5V Winding 4 Turns 2*0.4 mm Heavy Nyleze 5 EF20
4
Figure 4 - Transformer Electrical Diagram
7.2
Electrical Specifications
1 second, 50 Hz, from Pins 1-4 to Pins 8-5 (Pins 7/6 shorted) Pins 1-4, all other windings open, measured at 100 kHz, 0.4 VRMS Pins 1-4, with Pins 8-5 shorted, measured at 100 kHz, 0.4 VRMS 3000 VAC 1 mH, -0/+20% 50 H (Max.)
Electrical Strength Primary Inductance Primary Leakage Inductance
7.3
Materials
Description 2 Core: EF20, Epcos gapped for AL = 196 nH/T Bobbin: EF20 Horizontal, 8 Pins Magnet Wire: 0.28mm Magnet Wire: 0.4mm Tape: 3M 1298 Polyester Film 12mm Varnish
Item [1] [2] [3] [4] [5] [6]
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
7.4
Transformer Build Diagram
PIN 5 PIN 6 PIN 7
14V / 5V Winding
PIN 8
PIN 1 PIN 4
Primary Winding
Figure 5 - Transformer Build Diagram
7.5
Transformer Construction
Primary Basic Insulation Secondary Windings Outer Wrap Final Assembly
Start at Pin 4. Wind 37 turns of item [3] in approximately 1 layer. Use one layer of item [5] for basic insulation. Wind remaining 36 primary turns, finish on Pin1. Use two layers of item [5] for basic insulation. Start at Pin 8. Wind 7 bifilar turns of item [4]. Finish on Pin 7. Start at Pin 6. Wind 4 bifilar turns of item [4] in the same layer. Finish on Pin 5. Spread turns evenly across bobbin. Wrap windings with 3 layers of tape [item [5]. Assemble and secure core halves so that the tape wrapped E core is at the bottom of the transformer. Varnish impregnate (item [6]).
Page 10 of 24
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
8 Transformer Spreadsheets
INPUT ENTER APPLICATION VARIABLES VACMIN 207 VACMAX 400 fL 50 VO 5 PO 19.3 n 0.7 Z 0.5 VB 12 tC 3 CIN 23.5 INFO OUTPUT UNIT Volts Volts Hertz Volts Watts
Volts mSeconds uFarads
Maximum AC Input Voltage AC Mains Frequency Output Voltage (main) Output Power Efficiency Estimate Loss Allocation Factor Bias Voltage Bridge Rectifier Conduction Time Estimate Input Filter Capacitor
ENTER TOPSWITCH-GX VARIABLES TOP-GX top243 Chosen Device TOP243 KI ILIMITMIN ILIMITMAX Frequency (F)=132kHz, (H)=66kHz fS fSmin fSmax VOR VDS VD VDB KP 0.85
Universal Power Out 30W
0.689Amps 0.842 Amps F 132000Hertz 124000Hertz 140000Hertz Volts Volts Volts Volts
115 Doubled/230V 45W External Ilimit reduction factor (KI=1.0 for default ILIMIT, KI <1.0 for lower ILIMIT) Use 1% resistor in setting external ILIMIT Use 1% resistor in setting external ILIMIT Full (F) frequency option - 132kHz TOPSwitch-GX Switching Frequency: Choose between 132 kHz and 66 kHz TOPSwitch-GX Minimum Switching Frequency TOPSwitch-GX Maximum Switching Frequency Reflected Output Voltage TOPSwitch on-state Drain to Source Voltage Output Winding Diode Forward Voltage Drop Bias Winding Diode Forward Voltage Drop Ripple to Peak Current Ratio (0.4 < KRP < 1.0 : 1.0< KDP<6.0)
100 10 0.5 0.7 0.8
ENTER TRANSFORMER CORE/CONSTRUCTION VARIABLES Core Type EF20 Core EF20 P/N: EF20_BOBBI N Bobbin P/N: AE 0.335cm^2 LE 4.49cm AL 1570nH/T^2 BW 12.2mm M L NS 0 2 4 mm
PC40EF20-Z * Core Effective Cross Sectional Area Core Effective Path Length Ungapped Core Effective Inductance Bobbin Physical Winding Width Safety Margin Width (Half the Primary to Secondary Creepage Distance) Number of Primary Layers Number of Secondary Turns
DC INPUT VOLTAGE PARAMETERS VMIN VMAX CURRENT WAVEFORM SHAPE PARAMETERS DMAX IAVG IP IR IRMS
263Volts 566Volts
Minimum DC Input Voltage Maximum DC Input Voltage
0.28 0.10Amps 0.62Amps 0.49Amps 0.21Amps
Maximum Duty Cycle Average Primary Current Peak Primary Current Primary Ripple Current Primary RMS Current
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
TRANSFORMER PRIMARY DESIGN PARAMETERS LP NP NB ALG BM BP BAC ur LG BWE OD INS DIA AWG CM CMA
1035uHenries 73 9 196nH/T^2 2621Gauss 3576Gauss 1048Gauss 1675 0.19mm 24.4mm 0.34mm 0.06mm 0.28mm 30AWG 102Cmils 482Cmils/Amp
Primary Inductance Primary Winding Number of Turns Bias Winding Number of Turns Gapped Core Effective Inductance Maximum Flux Density at PO, VMIN (BM<3000) Peak Flux Density (BP<4200) AC Flux Density for Core Loss Curves (0.5 X Peak to Peak) Relative Permeability of Ungapped Core Gap Length (Lg > 0.1 mm) Effective Bobbin Width Maximum Primary Wire Diameter including insulation Estimated Total Insulation Thickness (= 2 * film thickness) Bare conductor diameter Primary Wire Gauge (Rounded to next smaller standard AWG value) Bare conductor effective area in circular mils Primary Winding Current Capacity (200 < CMA < 500)
TRANSFORMER SECONDARY DESIGN PARAMETERS (SINGLE OUTPUT EQUIVALENT) Lumped parameters ISP 11.21Amps Peak Secondary Current ISRMS 6.10Amps Secondary RMS Current IO 3.86Amps Power Supply Output Current IRIPPLE 4.73Amps Output Capacitor RMS Ripple Current CMS AWGS DIAS ODS INSS VOLTAGE STRESS PARAMETERS VDRAIN PIVS PIVB Warning 796Volts 36Volts 84Volts !!! REDUCE DRAIN VOLTAGE Vdrain<680, reduce VACMAX, reduce VOR Output Rectifier Maximum Peak Inverse Voltage Bias Rectifier Maximum Peak Inverse Voltage 1221Cmils 19AWG 0.91mm 3.05mm 1.07mm Secondary Bare Conductor minimum circular mils Secondary Wire Gauge (Rounded up to next larger standard AWG value) Secondary Minimum Bare Conductor Diameter Secondary Maximum Outside Diameter for Triple Insulated Wire Maximum Secondary Insulation Wall Thickness
TRANSFORMER SECONDARY DESIGN PARAMETERS (MULTIPLE OUTPUTS) 1st output VO1 5 5Volts Output Voltage IO1 0.5 0.5Amps Output DC Current PO1 2.50 Watts Output Power VD1 0.6 0.6Volts Output Diode Forward Voltage Drop NS1 4.07 Output Winding Number of Turns ISRMS1 0.791 Amps Output Winding RMS Current IRIPPLE1 0.61Amps Output Capacitor RMS Ripple Current PIVS1 37Volts Output Rectifier Maximum Peak Inverse Voltage CMS1 AWGS1 158Cmils 28AWG Output Winding Bare Conductor minimum circular mils Wire Gauge (Rounded up to next larger standard AWG value)
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DER-105
DIAS1 ODS1 2nd output VO2 IO2 PO2 VD2 NS2 ISRMS2 IRIPPLE2 PIVS2 CMS2 AWGS2 DIAS2 ODS2
19.3 W Wide Range Multiple Output Flyback
0.32mm 3.00mm
October 26, 2005
Minimum Bare Conductor Diameter Maximum Outside Diameter for Triple Insulated Wire
14 1.2 1
Volts Amps 16.80 Watts Volts 10.91 1.897 Amps 1.47Amps 99Volts 379Cmils 24AWG 0.51mm 1.12mm
Output Voltage Output DC Current Output Power Output Diode Forward Voltage Drop Output Winding Number of Turns Output Winding RMS Current Output Capacitor RMS Ripple Current Output Rectifier Maximum Peak Inverse Voltage Output Winding Bare Conductor minimum circular mils Wire Gauge (Rounded up to next larger standard AWG value) Minimum Bare Conductor Diameter Maximum Outside Diameter for Triple Insulated Wire
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
9 Performance Data
9.1 Efficiency
90 80 70 Efficiency in % 60 50 40 30 20 10 150
200
250
300 Input Voltage in V
350
400
450
Figure 6 - Efficiency vs. Input Voltage, Room Temperature, 50 Hz.
9.2
No-load Input Power
500 450 400 Input Power in mW 350 300 250 200 150 100 50 0 180 190 200 210 220 230 240 250 260 270
Input Voltage in V
Figure 7 - Zero Load Input Power vs. Input Line Voltage, Room Temperature, 50 Hz.
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DER-105 9.3 Regulation
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
9.3.1 Load
0
Tolerance of NOM. Value in %
-0.5 0 -1 14V 5V 20 40 60 80 100 120
-1.5
-2
-2.5
-3 Load Percent of NOM. Load in %
Figure 8 - Load Regulation, Room Temperature
9.3.2 Line
0
Tolerance of Nom. Value in %
-0.5
-1150
200
250
300
350
400
450 14V 5V
-1.5
-2
-2.5
-3 Input Voltage in V
Figure 9 - Line Regulation, Room Temperature, Full Load
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
10 Thermal Performance
Temperature (C) Item Ambient MOSFET (Q1) TOPSwitch (U1) Transformer (T3) Rectifier (D7) 200 VAC 29 46 60.5 61.8 79.9 300 VAC 29 44.8 52.6 63 73.6 400 VAC 29 50.8 52.6 63.6 72.4
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
11 Waveforms
11.1 Drain Voltage and Current, Normal Operation
Figure 10 - 200 VAC, Full Load Upper: IDRAIN, 0.2 A / div Lower: VDRAIN, 200 V, 2 s / div
Figure 11 - 400 VAC, Full Load Upper: IDRAIN, 0.2 A / div Lower: VDRAIN, 200 V / div
11.2 Output Voltage Start-up Profile
Figure 12 - Start-up Profile, 200 VAC 100 ms / div. Upper: 12 V, Lower: 5 V
Figure 13 - Start-up Profile, 400 VAC 100 ms / div. Upper: 12 V, Lower: 5 V
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
11.3 Drain Voltage and Current Start-up Profile
Figure 14 - 200 VAC Input and Maximum Load. Upper: IDRAIN, 0.5 A / div. Lower: VDRAIN, 100 V & 1 ms / div.
Figure 15 - 400 VAC Input and Maximum Load. Upper: IDRAIN, 0.5 A / div. Lower: VDRAIN, 200 V & 1 ms / div.
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
11.4 Load Transient Response (75% to 100% Load Step) In the figures shown below, signal averaging was used to better enable viewing the load transient response. The oscilloscope was triggered using the load current step as a trigger source. Since the output switching and line frequency occur essentially at random with respect to the load transient, contributions to the output ripple from these sources will average out, leaving the contribution only from the load step response.
Figure 16 - Transient Response, 200 VAC, 75-10075% Load Step 5 V Output Voltage 100 mV, 5 ms/ div.
Figure 17 - Transient Response, 200 VAC, 75-10075% Load Step 14 V Output Voltage 100 mV, 5ms / div.
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
11.5 Output Ripple Measurements 11.5.1 Ripple Measurement Technique For DC output ripple measurements, a modified oscilloscope test probe must be utilized in order to reduce spurious signals due to pickup. Details of the probe modification are provided in Figure 18 and Figure 19. The 5125BA probe adapter is affixed with two capacitors tied in parallel across the probe tip. The capacitors include one (1) 0.1 F/50 V ceramic type and one (1) 1.0 F/50 V aluminum electrolytic. The aluminum electrolytic type capacitor is polarized, so proper polarity across DC outputs must be maintained (see below).
Probe Ground
Probe Tip
Figure 18 - Oscilloscope Probe Prepared for Ripple Measurement. (End Cap and Ground Lead Removed)
Figure 19 - Oscilloscope Probe with Probe Master 5125BA BNC Adapter. (Modified with wires for probe ground for ripple measurement, and two parallel decoupling capacitors added)
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
11.5.2 Measurement Results
Figure 20 - 5 V Ripple, 200 VAC, Full Load 10 us, 20 mV / div
Figure 21 - 5 V Ripple, 400 VAC, Full Load 10 us, 20 mV / div
Figure 22 - 14 V Ripple, 200 VAC, Full Load 2 ms, 50 mV /div
Figure 23 - 14 V Ripple, 400 VAC, Full Load 2 ms, 50 mV /div
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
12 Conducted EMI
Figure 24 - Conducted EMI, Maximum Steady State Load, 200 VAC, 50 Hz, and EN55022 B Limits
Figure 25 - Conducted EMI, Maximum Steady State Load, 300 VAC, 50 Hz, and EN55022 B Limits
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
13 Revision History
Date 10-26-05 Author HM Revision 1.0 Description & changes Initial Release Reviewed KM/JC/VC
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DER-105
19.3 W Wide Range Multiple Output Flyback
October 26, 2005
For the latest updates, visit our website: www.powerint.com
Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein. POWER INTEGRATIONS MAKES NO WARRANTY HEREIN AND SPECIFICALLY DISCLAIMS ALL WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. PATENT INFORMATION The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations' patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at http://www.powerint.com/ip.htm. The PI Logo, TOPSwitch, TinySwitch, LinkSwitch, DPA-Switch, EcoSmart, PI Expert and PI FACTS are trademarks of Power Integrations, Inc. Other trademarks are property of their respective companies. (c)Copyright 2005 Power Integrations, Inc.
Power Integrations Worldwide Sales Support Locations
WORLD HEADQUARTERS 5245 Hellyer Avenue San Jose, CA 95138, USA. Main: +1-408-414-9200 Customer Service: Phone: +1-408-414-9665 Fax: +1-408-414-9765 e-mail: usasales@powerint.com GERMANY Rueckertstrasse 3 D-80336, Munich Germany Phone: +49-89-5527-3910 Fax: +49-89-5527-3920 e-mail: eurosales@powerint.com JAPAN Keihin Tatemono 1st Bldg 2-12-20 Shin-Yokohama, Kohoku-ku, Yokohama-shi, Kanagawa ken, Japan 222-0033 Phone: +81-45-471-1021 Fax: +81-45-471-3717 e-mail: japansales@powerint.com KOREA RM 602, 6FL Korea City Air Terminal B/D, 159-6 Samsung-Dong, Kangnam-Gu, Seoul, 135-728, Korea Phone: +82-2-2016-6610 Fax: +82-2-2016-6630 e-mail: koreasales@powerint.com SINGAPORE 51 Newton Road, #15-08/10 Goldhill Plaza, Singapore, 308900 Phone: +65-6358-2160 Fax: +65-6358-2015 e-mail: singaporesales@powerint.com TAIWAN 5F, No. 318, Nei Hu Rd., Sec. 1 Nei Hu Dist. Taipei, Taiwan 114, R.O.C. Phone: +886-2-2659-4570 Fax: +886-2-2659-4550 e-mail: taiwansales@powerint.com
CHINA (SHANGHAI) Rm 807-808A, Pacheer Commercial Centre, 555 Nanjing Rd. West Shanghai, P.R.C. 200041 Phone: +86-21-6215-5548 Fax: +86-21-6215-2468 e-mail: chinasales@powerint.com
INDIA 261/A, Ground Floor 7th Main, 17th Cross, Sadashivanagar Bangalore, India 560080 Phone: +91-80-5113-8020 Fax: +91-80-5113-8023 e-mail: indiasales@powerint.com
EUROPE HQ 1st Floor, St. James's House East Street, Farnham Surrey, GU9 7TJ United Kingdom Phone: +44 (0) 1252-730-140 Fax: +44 (0) 1252-727-689 e-mail: eurosales@powerint.com
CHINA (SHENZHEN) Room 2206-2207, Block A, Elec. Sci. Tech. Bldg. 2070 Shennan Zhong Rd. Shenzhen, Guangdong, China, 518031 Phone: +86-755-8379-3243 Fax: +86-755-8379-5828 e-mail: chinasales@powerint.com
ITALY Via Vittorio Veneto 12 20091 Bresso MI Italy Phone: +39-028-928-6000 Fax: +39-028-928-6009 e-mail: eurosales@powerint.com
APPLICATIONS HOTLINE World Wide +1-408-414-9660 APPLICATIONS FAX World Wide +1-408-414-9760
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Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com

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Price & Availability of DER-105

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