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| Design Example Report Title Specification Application Author Document Number Date Revision 3.9W Power Supply using TNY263P Input: 85 - 275VAC Output: 12V/175mA, 9V/110mA, 5V/160mA Refrigerator Power Integrations Applications Department DER-52 April 20, 2005 1.0 Summary and Features This document is an engineering prototype report describing a Refrigerator power supply utilizing a TinySwitch-II TNY263. * * * * * * No Y-Cap No X-Cap No Common-Mode Choke Low Component Count Good Cross Regulation No Load Input Power <400mW 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. Power Integrations 5245 Hellyer Avenue, San Jose, CA 95138 USA. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 Table Of Contents Introduction................................................................................................................. 3 Power Supply Specification ........................................................................................ 4 Schematic................................................................................................................... 5 Circuit Description ...................................................................................................... 6 4.1 TinySwitch-II Primary .......................................................................................... 6 4.2 Output Rectification ............................................................................................. 6 4.3 Output Feedback................................................................................................. 6 5 PCB Layout ................................................................................................................ 7 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 .................................................................................................... 13 9.1 Efficiency........................................................................................................... 13 9.2 No-load Input Power.......................................................................................... 13 9.3 Regulation ......................................................................................................... 14 9.3.1 Load ........................................................................................................... 14 9.3.2 Line ............................................................................................................ 14 9.3.3 Cross Regulation........................................................................................ 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............................................................................ 21 11.5.1 Ripple Measurement Technique ................................................................ 21 11.5.2 Measurement Results ................................................................................ 22 12 Conducted EMI ..................................................................................................... 23 13 Revision History.................................................................................................... 25 Important Note: 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 isolation transformer to provide the AC input 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. 1 2 3 4 Page 2 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 1 Introduction This document is an engineering prototype report describing a Refrigerator power supply utilizing a TinySwitch-II TNY263. This power supply is intended as a general purpose evaluation platform for TinySwitch-II. The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data. +12V +9V 0V +5V Figure 1 - Populated Circuit Board Photograph. Page 3 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 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 1 Output Ripple Voltage 1 Output Current 1 Output Voltage 1 Output Ripple Voltage 1 Output Current 1 Total Output Power Continuous Output Power Peak Output Power Efficiency estimated Environmental Conducted EMI Safety Surge Meets CISPR22B / EN55022B Designed to meet IEC950, UL1950 Class II Symbol VIN fLINE Min 85 Typ Max 265 Units VAC Hz W V mV mA V mV mA V mV mA Comment 2 Wire - no P.E. 50 VOUT1 VRIPPLE1 IOUT1 VOUT1 VRIPPLE1 IOUT1 VOUT1 VRIPPLE1 IOUT1 POUT POUT_PEAK 5 5 160 9 110 12 175 3.9 3.9 77 5% 20 MHz Bandwidth 7% 20 MHz Bandwidth 10% 20 MHz Bandwidth 72 W W % 4 kV Surge Ambient Temperature TAMB 3 0 50 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 Adapter Enclosure C Page 4 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 3 Schematic Figure 2 - Schematic. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 5 of 26 DER-52 TNY263 Multi Output April 20, 2005 4 Circuit Description The schematic in Figure 2 shows an off-line flyback converter using the TNY263P. The circuit is designed to operate from 85 VAC to 265 VAC input and provides multiple outputs (i.e. +5V, +9V, +12V). 4.1 TinySwitch-II Primary AC input power is rectified by a full bridge diodes, consisting of D1 through D4. The rectified DC is then filtered by the bulk storage capacitors C12 and C1. Inductor L6, C1 and C12 form a pi () filter, which attenuates conducted differential-mode EMI noise. The rectified DC rail is applied to one end of the transformer primary, the other end being connected to the drain pin of the integrated MOSFET of U4. To keep the peak DRAIN voltage acceptably below the BVDSS (700V) of U4, diode D5, C3, R8, and R2 form a primary clamp. This network clamps the voltage spike seen on the DRAIN due to primary and secondary reflected leakage inductance. Capacitor C4 stores energy through the internal high voltage device and provides bias supply for U4. 4.2 Output Rectification The secondary has three isolated windings. Each output is rectified and filtered to provide +5V, +9V & +12V DC outputs. The +5V output has a post filter to reduce the high frequency output voltage ripple. 4.3 Output Feedback The regulation is realized with a TL431 shunt regulator to keep the 5V output tolerance within the specification. For a relaxed 5V tolerance the TL431 regulation circuit could be replaced with a Zener diode regulation. Page 6 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 5 PCB Layout Figure 3 - Printed Circuit Layout. Notes: Parts which are not used in the prototype: L3, C10 (Y-Cap) Parts which are different to the layout: C1, L1, F1 Parts which are not included in the layout: R9, C16 A fully updated layout file is available upon request. Page 7 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 6 Bill Of Materials Item Qty Value Description 1 1 10 uF 10uF,400V, Electrolytic, Gen. Purpose 2 1 1 nF 1 nF, 1 kV, Disc Ceramic 3 2 100 nF 100 nF, 50 V, Ceramic, X7R 4 1 100 uF 100 uF, 16 V, Electrolytic, Gen. Purpose, (5 x 11) 5 1 2.2 uF 2.2 uF, 400 V, Electrolytic, (8 x 11.5) 6 2 56 uF 56 uF, 35 V, Electrolytic, Low ESR, 250 mOhm, (6.3 x 11.5) 7 1 33 uF 33 uF, 35 V, Electrolytic, Low ESR, 50 mOhm, (5 x 11.5) 8 1 330 pF 330 pF, 100 V, Ceramic, COG 9 5 1N4007GP 1000 V, 1 A, Rectifier, Glass Passivated, 2 us, DO-41 10 3 UF4002 100 V, 1 A, Ultrafast Recovery, 50 ns, DO-41 11 1 3.3 uH 3.3 uH, 0.285 A, Iron Core 12 1 680 uH 680 uH, 0.113 A, 13 2 100 100 R, 5%, 1/4 W, Carbon Film 14 1 3.3 k 3.3 k, 5%, 1/4 W, Carbon Film 15 2 10 k 10 k, 1%, 1/4 W, Metal Film 16 1 510 k 510 k, 5%, 1/4 W, Carbon Film 17 1 510 510 R, 5%, 1/4 W, Carbon Film 18 1 8.2 8.2 R, 2.5 W, Fusible/Flame Proof Wire Wound 19 1 EF16 Bobbin, EF16, Horizontal, 10 pins 20 1 PC817A Opto coupler, 35 V, CTR 80-160%, 4-DIP 21 1 TL431 2.495 V Shunt Regulator IC, 2%, 0 to 70C, TO-92 22 1 TNY263P TinySwitch-II, TNY263P, DIP-8B Part Reference Mfg C1 United Chemi-Con C3 NIC Components Corp C4 C11 Panasonic C8 United Chemi-Con C12 United Chemi-Con C13 C15 United Chemi-Con C14 United Chemi-Con C16 Panasonic D1 D2 D3 D4 D5 Vishay D6 D7 D8 Vishay L5 API Delevan L6 Wuerth Elektronik R2 R3 Yageo R5 Yageo R6 R7 Yageo R8 Yageo R9 Yageo RF1 Vitrohm T1 Ngai Cheong Electronics U2 Isocom, Sharp U3 Texas Instruments U4 Power Integrations Page 8 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 7 Transformer Specification 7.1 Electrical Diagram 10 12V Winding 3 Turns 1*0.40mm Triple Isolated 9V Winding 4 Turns 1*0.40mm Triple Isolated 5V Winding 6 Turns 1*0.40mm Triple Isolated NC Core Shield 28 Turns 2*0.15mm Heavy Nyleze (bifilar) 1 Primary 118 Turns 0.15mm Heavy Nyleze 3 NC Balance Winding 10 Turns 2*0.4mm Heavy Nyleze (bifilar) 2 EF16 9 8 6 Figure 4 -Transformer Electrical Diagram 7.2 Electrical Specifications 1 second, 60 Hz, from Pins 1-3 to Pins 8-10 Pins 1-3, all other windings open, measured at 100 kHz, 0.4 VRMS Pins 1-3, all other windings open Pins 1-3, with Pins 8-10 shorted, measured at 100 kHz, 0.4 VRMS 3000 VAC 1990 H, 0/+20% 950 kHz (Min.) 50 H (Max.) Electrical Strength Primary Inductance Resonant Frequency Primary Leakage Inductance 7.3 Materials Description 2 Core: PC40EF16-Z, TDK or equivalent Gapped for AL of 143 nH/T Bobbin: EF16 Horizontal 10 pin Magnet Wire: 0.15mm Magnet Wire: 0.4mm Triple Insulated Wire: 0.4mm Tape: 3M 1298 Polyester Film, 2.0 mils thick, 9.8 mm wide Varnish Item [1] [2] [3] [4] [5] [6] [7] Page 9 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 7.4 Transformer Build Diagram PIN 9 PIN 10 PIN 6 PIN 8 12V/9V/5V W inding N.C. PIN 2 PIN 1 PIN 6 Balance W inding PIN 9 Primary W inding PIN 3 N.C. PIN 1 Core Shield W inding Figure 5 - Transformer Build Diagram. 7.5 Transformer Construction Core Shield Tape Primary Basic Insulation Balance Winding Insulation 12V, 9V and 5V Windings Outer Wrap Final Assembly Start at PIN1. Wind 28 bifilar turns of item [3] from left to right covering a single full layer. Leave the end of winding inside. 1 layer of item [6] for mechanical fixing. Start at Pin 3. Wind 118 turns of item [3] in approximately 2 1/2 layers from left to right. The first layer should have about 53 turns, the second 53 turns too and the third 10 turns. Bring finish lead back to start. Finish on Pin 1. 1 layer of item [6] for basic insulation. Starting temporary at Pin 6, wind 10 bifilar turns of item [4] from right to the left. Spread turns evenly across bobbin. Finish at Pin 2. Remove the wire from Pin 6 and leave the end of winding inside. Use 1 layers of item [6] for basic insulation Start at Pin 6. Wind 6 turns of item [5] from right to left. Terminate on Pin 8. In the same layer start at Pin 9. Wind 4 turns of item [5] and terminate on Pin 6. For the 12V Winding start at Pin 10 and wind 3 turns of item [5]. Terminate Winding on Pin 9. Wrap windings with 2 layers of tape item [6]. Assemble and secure core halves so that the tape wrapped E core is at the bottom of the transformer. Varnish impregnate (item [9]). Page 10 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 8 Transformer Spreadsheets INPUT INFO ENTER APPLICATION VARIABLES VACMIN 85 VACMAX 275 fL 50 VO 5 PO 3.89 n 0.75 Z 0.5 tC CIN 12.2 ENTER TinySwitch-II VARIABLES TinySwitch-II tny263 Chosen Device TNY263 ILIMITMIN ILIMITMAX fS fSmin fSmax VOR 118 VDS VD 1 KP OUTPUT UNIT Volts Volts Hertz Volts Watts 0.50 3.00 mSeconds uFarads Minimum AC Input Voltage Maximum AC Input Voltage AC Mains Frequency Output Voltage Output Power Efficiency Estimate Loss Allocation Factor Bridge Rectifier Conduction Time Estimate Input Filter Capacitor Universal Power Out 4.7W 0.20 Amps 0.23 Amps 132000.00 Hertz 120000.00 Hertz 144000.00 Hertz Volts 10.00 Volts Volts 1.05 115 Doubled/230V 7.5W TinySwitch-II Minimum Current Limit TinySwitch-II Maximum Current Limit TinySwitch-II Switching Frequency TinySwitch-II Minimum Switching Frequency (inc. jitter) TinySwitch-II Maximum Switching Frequency (inc. jitter) Reflected Output Voltage TinySwitch-II on-state Drain to Source Voltage Output Winding Diode Forward Voltage Drop Ripple to Peak Current Ratio (0.6 PC40EF16-Z 0 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 92.19 Volts 388.91 Volts Minimum DC Input Voltage Maximum DC Input Voltage 0.59 0.06 Amps 0.20 Amps 0.20 Amps 0.09 Amps Maximum Duty Cycle Average Primary Current Minimum Peak Primary Current Primary Ripple Current Primary RMS Current TRANSFORMER PRIMARY DESIGN PARAMETERS LP 1989.19 uHenries NP 118.00 ALG 142.86 nH/T^2 BM 1887.04 Gauss BAC 943.52 Gauss ur 1637.47 LG 0.15 mm BWE 20.00 mm 0.17 mm OD INS 0.04 mm DIA 0.13 mm AWG 36.00 AWG CM 25.40 Cmils CMA 296.98 Cmils/Amp TRANSFORMER SECONDARY DESIGN PARAMETERS Lumped parameters ISP 3.84 Amps ISRMS 1.40 Amps IO 0.78 Amps IRIPPLE 1.17 Amps CMS 280.74 Cmils AWGS 25.00 AWG DIAS 0.46 mm ODS 1.67 mm INSS 0.60 mm VOLTAGE STRESS PARAMETERS Primary Inductance Primary Winding Number of Turns Gapped Core Effective Inductance Maximum Flux Density, (BP<3100) 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) Peak Secondary Current Secondary RMS Current Power Supply Output Current Output Capacitor RMS Ripple Current 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 Page 11 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 VDRAIN PIVS TNY263 Multi Output 656.71 Volts 24.78 Volts April 20, 2005 Maximum Drain Voltage Estimate (Includes Effect of Leakage Inductance) Output Rectifier Maximum Peak Inverse Voltage TRANSFORMER SECONDARY DESIGN PARAMETERS (MULTIPLE OUTPUTS) 1st output VO1 5 5.00 Volts Output Voltage (if unused, defaults to single output design) IO1 0.16 0.16 Amps Output DC Current PO1 0.80 Watts Output Power VD1 1.00 Volts Output Diode Forward Voltage Drop NS1 6.00 Output Winding Number of Turns ISRMS1 0.29 Amps Output Winding RMS Current IRIPPLE1 0.24 Amps Output Capacitor RMS Ripple Current PIVS1 24.78 Volts Output Rectifier Maximum Peak Inverse Voltage CMS1 AWGS1 DIAS1 ODS1 2nd output VO2 IO2 PO2 VD2 NS2 ISRMS2 IRIPPLE2 PIVS2 CMS2 AWGS2 DIAS2 ODS2 3rd output VO3 IO3 PO3 VD3 NS3 ISRMS3 IRIPPLE3 PIVS3 CMS3 AWGS3 DIAS3 ODS3 Total power 57.74 Cmils 32.00 AWG 0.20 mm 1.67 mm 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 9 0.11 1 Volts Amps 0.99 Watts Volts 10.00 0.20 Amps 0.17 Amps 41.96 Volts 39.69 Cmils 34.00 AWG 0.16 mm 1.00 mm 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 12 0.175 1 Volts Amps 2.10 Watts Volts 13.00 0.32 Amps 0.26 Amps 54.85 Volts 63.15 Cmils 32.00 AWG 0.20 mm 0.77 mm 3.89 Watts 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 Total Output Power Page 12 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 9 Performance Data All measurements performed at room temperature, 50 Hz input frequency. 9.1 Efficiency 0.78 0.77 0.76 Efficiency in % 0.75 0.74 0.73 0.72 0.71 0 50 100 150 Input Voltage in V 200 250 300 Figure 6- Efficiency vs. Input Voltage, Room Temperature, 50 Hz. 9.2 No-load Input Power 400 350 Input Power in mW 300 250 200 150 100 50 0 0 50 100 150 Input Voltage in V 200 250 300 Figure 7- Zero Load Input Power vs. Input Line Voltage, Room Temperature, 50 Hz. Page 13 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 9.3 Regulation 9.3.1 Load 0.6 Tolerance of NOM. Value in % 0.4 0.2 0 -0.2 -0.4 -0.6 0 20 40 60 80 100 120 Load Percent of NOM. Load in % 12V 9V 5V Figure 8 -Load Regulation, Room Temperature. 9.3.2 Line 0.8 Tolerance of Nom. Value in % 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 0 50 100 150 Input Voltage in V 200 250 300 12V 9V 5V Figure 9 - Line Regulation, Room Temperature, Full Load. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 14 of 26 DER-52 9.3.3 Cross Regulation TNY263 Multi Output April 20, 2005 Min Load (X) Max Load (M) Load Combinations 12V - 9V -5V XXX XXM XMX MXX XMM MMX MMM Min (V) Max (V) % Below % Above 12V Rail (A) 9V Rail (A) 0.035 0.022 0.175 0.11 Voltage (V) 12.16 13.1 12.15 11.44 12.9 11.48 12.06 11.44 13.1 -4.67 9.17 Voltage (V) 9.08 9.6 8.67 8.88 9.03 8.67 8.99 8.67 9.6 -3.67 6.67 5V Rail (A) 0.036 0.16 Voltage (V) 4.99 4.85 5 5 4.93 5 4.97 4.85 5 -3.00 0.00 Page 15 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 10 Thermal Performance Temperature (C) Item Ambient Inductor (L6 ) Transformer (T1) Clamp Resistor (R8 ) Snubber Resistor (R9) TNY263P (U4) Rectifier 12V (D8) 85 VAC 25 41.5 48.5 44 38 45.5 47 115 VAC 25 36 46.5 44.5 37 42 45.5 230 VAC 25 37 46 45 36.5 44.5 47.5 Page 16 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 11 Waveforms 11.1 Drain Voltage and Current, Normal Operation Figure 10 - 85 VAC, Full Load. Lower: IDRAIN, 100 mA / div Upper: VDRAIN, 100 V, 5 s / div Figure 11 - 275 VAC, Full Load Lower: IDRAIN, 100 mA / div Upper: VDRAIN, 200 V / div 11.2 Output Voltage Start-up Profile Figure 12 - Start-up Profile, 85VAC CH1: 12V (5V, 1 ms / div.) CH2: 9V (2V, 1 ms / div.) CH3: 5V (2V, 1 ms / div.) Figure 13 - Start-up Profile, 275VAC CH1: 12V (5V, 1 ms / div.) CH2: 9V (2V, 1 ms / div.) CH3: 5V (2V, 1 ms / div.) Page 17 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 11.3 Drain Voltage and Current Start-up Profile Figure 14 - 85 VAC Input and Maximum Load. Lower: IDRAIN, 100 mA / div. Upper: VDRAIN, 100 V & 1 ms / div. Figure 15 - 265 VAC Input and Maximum Load. Lower: IDRAIN, 100 mA / div. Upper: VDRAIN, 200 V & 1 ms / div. Page 18 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 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, 230 VAC, 75-10075% Load Step. 12V Output Voltage 100 mV, 5 ms / div. Figure 17 - Transient Response, 230 VAC, 75-10075% Load Step 9V Output Voltage 100 mV, 5 ms / div. Page 19 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 Figure 18 - Transient Response, 230 VAC, 75-10075% Load Step. 5V Output Voltage 20 mV, 5 ms / div. Page 20 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 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 19 and Figure 20. 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 19 - Oscilloscope Probe Prepared for Ripple Measurement. (End Cap and Ground Lead Removed) Figure 20 - Oscilloscope Probe with Probe Master 5125BA BNC Adapter. (Modified with wires for probe ground for ripple measurement, and two parallel decoupling capacitors added) Page 21 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 11.5.2 Measurement Results Figure 21 - 5V Ripple, 115 VAC, Full Load. 2 ms, 5 mV / div Figure 22 - 5 V Ripple, 230 VAC, Full Load. 2 ms, 5 mV / div Page 22 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 12 Conducted EMI Figure 23 - Conducted EMI, Maximum Steady State Load, 115 VAC, 50 Hz, Secondary Ground floating, and EN55022 B Limits. Figure 24 - Conducted EMI, Maximum Steady State Load, 230 VAC, 50 Hz, Secondary Ground floating, and EN55022 B Limits. Page 23 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 Figure 25 - Conducted EMI, Maximum Steady State Load, 115 VAC, 50 Hz, Secondary Ground connected to Earth, and EN55022 B Limits. Figure 26 - Conducted EMI, Maximum Steady State Load, 230 VAC, 50 Hz, Secondary Ground connected to Earth, and EN55022 B Limits. Page 24 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 13 Revision History Date April 20, 2005 Author HM Revision 1.0 Description & changes Initial release Reviewed VC / AM Page 25 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com DER-52 TNY263 Multi Output April 20, 2005 For the latest updates, visit our Web site: www.powerint.com Power Integrations may make changes to its products at any time. Power Integrations has no liability arising from your use of any information, device or circuit described herein nor does it convey any license under its patent rights or the rights of others. POWER INTEGRATIONS MAKES NO WARRANTIES HEREIN AND SPECIFICALLY DISCLAIMS ALL WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS. PATENT INFORMATION 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. The PI Logo, TOPSwitch, TinySwitch, LinkSwitch, and EcoSmart are registered trademarks of Power Integrations. PI Expert and DPA-Switch are trademarks of Power Integrations. (c) Copyright 2004, Power Integrations. WORLD HEADQUARTERS Power Integrations 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 AMERICAS Power Integrations, Inc. 4335 South Lee Street, Suite G, Buford, GA 30518, USA Phone: +1-678-714-6033 Fax: +1-678-714-6012 e-mail: usasales@powerint.com CHINA (SHENZHEN) Power Integrations International Holdings, Inc. Rm# 1705, Bao Hua Bldg. 1016 Hua Qiang Bei Lu, Shenzhen, Guangdong, 518031, China Phone: +86-755-8367-5143 Fax: +86-755-8377-9610 e-mail: chinasales@powerint.com GERMANY Power Integrations, GmbH Rueckertstrasse 3, D-80336, Munich, Germany Phone: +49-895-527-3910 Fax: +49-895-527-3920 e-mail: eurosales@powerint.com ITALY Power Integrations s.r.l. Via Vittorio Veneto 12, Bresso, Milano, 20091, Italy Phone: +39-028-928-6001 Fax: +39-028-928-6009 e-mail: eurosales@powerint.com JAPAN Power Integrations, K.K. Keihin-Tatemono 1st Bldg. 12-20 Shin-Yokohama, 2-Chome, Kohoku-ku, Yokohama-shi, Kanagawa 222-0033, Japan Phone: +81-45-471-1021 Fax: +81-45-471-3717 e-mail: japansales@powerint.com KOREA Power Integrations International Holdings, Inc. 8th Floor, DongSung Bldg. 17-8 Yoido-dong, Youngdeungpo-gu, Seoul, 150-874, Korea Phone: +82-2-782-2840 Fax: +82-2-782-4427 e-mail: koreasales@powerint.com SINGAPORE (ASIA PACIFIC HEADQUARTERS) Power Integrations, 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 Power Integrations International Holdings, Inc. 17F-3, No. 510, Chung Hsiao E. Rd., Sec. 5, Taipei, Taiwan 110, R.O.C. Phone: +886-2-2727-1221 Fax: +886-2-2727-1223 e-mail: taiwansales@powerint.com UK (EUROPE & AFRICA HEADQUARTERS) 1st Floor, St. James's House East Street Farnham, Surrey GU9 7TJ United Kingdom Phone: +44-1252-730-140 Fax: +44-1252-727-689 e-mail: eurosales@powerint.com CHINA (SHANGHAI) Power Integrations International Holdings, Inc. Rm 807, Pacheer, Commercial Centre, 555 Nanjing West Road, Shanghai, 200041, China Phone: +86-21-6215-5548 Fax: +86-21-6215-2468 e-mail: chinasales@powerint.com APPLICATIONS HOTLINE World Wide +1-408-414-9660 INDIA (TECHNICAL SUPPORT) Innovatech 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 APPLICATIONS FAX World Wide +1-408-414-9760 ER or EPR template - Rev 3.4 - Single sided Page 26 of 26 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com |
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