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Design Example Report
Title Specification Application Author Document Number Date Revision 5 W, 5 V Charger using TNY274P Input: 85 - 264 VAC Output: 5 V / 1 A Portable Audio / MP3 Player Power Integrations Applications Department DER-113 July 19, 2006 1.1
Summary and Features * * * * * * CVCC adapter High Efficiency Meets CEC efficiency and no-load specs <100 mW No Load Consumption Low conducted EMI without Y cap CC mode has good temperature compensation
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-113
5 W Charger for Portable Audio Player
July 19, 2006
Table Of Contents
Introduction .................................................................................................................3 Power Supply Specification ........................................................................................4 Schematic ...................................................................................................................5 Circuit Description.......................................................................................................6 4.1 Primary clamp snubber........................................................................................6 4.2 Bias supply ..........................................................................................................6 4.3 CVCC circuit ........................................................................................................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 9.1.1 Active Mode CEC Measurement Data........................................................15 9.2 No-load Input Power ..........................................................................................16 9.3 Regulation .........................................................................................................16 9.3.1 Output Characteristic..................................................................................16 10 Thermal Performance............................................................................................17 11 Waveforms ............................................................................................................18 11.1 Drain Voltage and Current, Normal Operation...................................................18 11.2 Output Voltage Start-up Profile ..........................................................................18 11.3 Drain Voltage and Current Start-up Profile ........................................................19 11.4 Load Transient Response (75% to 100% Load Step)........................................20 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 ....................................................................................................24 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. 1 2 3 4
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
1 Introduction
This document is an engineering report describing a design for a 5 V / 1 A adapter. The power supply utilizes a TNY274 as the switching controller. 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-113
5 W Charger for Portable Audio Player
July 19, 2006
2 Power Supply Specification
Description Input Voltage Frequency No-load Input Power (230 VAC) Output Output Voltage (CV) Output Voltage (CC) Output Ripple Voltage Output Current Total Output Power Continuous Output Power Efficiency Full Load Required average efficiency at 25, 50, 75 and 100 % of POUT Environmental Conducted EMI Safety Surge Ambient Temperature TAMB
Meets CISPR22B / EN55022B Designed to meet IEC950, UL1950 Class II
Symbol VIN fLINE
Min 85 47
Typ
Max 265 64 0.3 5.25 100 1 5
Units VAC Hz W V V mV A W % %
Comment
2 Wire - no P.E.
50/60
VOUT VOUT VRIPPLE IOUT POUT CEC
4.75
5 1
5% CC prior to auto-restart 20 MHz bandwidth CV Operation Mode
0
68 63.5
70
Measured at POUT 25 C Per California Energy Commission (CEC) / Energy Star requirements
o
1.5 0 50
kV
o
1.2/50 s surge, IEC 1000-4-5, Series Impedance: Differential Mode: 2 Common Mode: 12 Free convection, sea level
C
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
3 Schematic
Figure 2 - Schematic.
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
4 Circuit Description
4.1 Primary clamp snubber D5 is a normal recovery, glass passivated 1N4007G for good EMI and higher efficiency. If the glass passivated version of the 1N4007 is not available then the FR107 is recommended. Standard plastic 1N4007 types are not recommended due to excessive drain ringing. 4.2 Bias supply D6, C5 and R3 provide a small bias current to the TNY274 to reduce no-load consumption and reduce its temperature. 4.3 CVCC circuit Transistors Q1-Q3, and associated resistors form the constant current regulation circuit. Resistor R8 and R7 form the current sense resistor. In CC mode the voltage drop on it is regulated to 0.35 V. This CC circuit has built in temperature compensation. VR1 regulates the output in CV mode.
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
5 PCB Layout
Figure 3 - Printed Circuit Layout.
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
6 Bill Of Materials
Item Qty Part Reference
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 2 1 1 1 1 1 1 4 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 C1 C2 C3 C4 C5 C6 C7 C8 D1 D2 D3 D4 D5 D6 D7 HS1 L1 L2 Q1 Q2 Q3 R1 R2 R3 R4 R5 R6 R7 R8 R9 R11 R10 R12 R13 RF1 T1 U1 U2 VR1
Value
6.8 uF 100 nF 1 nF 4.7 uF 1 nF 1000 uF 10 nF 1N4007 1N4007GP 1N4148 SB330 HS
Description
6.8 uF, 400 V, Electrolytic, (10 x 16), 100 nF, 50 V, Ceramic, Z5U 1 nF, 1 kV, Disc Ceramic 4.7 uF, 50 V, Electrolytic, Gen. Purpose, (5 x 11) 1 nF, 100 V, Ceramic, X7R 1000 uF, 10 V, Electrolytic, Very Low ESR, 41 mOhm, (8 x 20) 10 nF, 50 V, Ceramic, Z5U 1000 V, 1 A, Rectifier, DO-41 1000 V, 1 A, Rectifier, Glass Passivated, 2 us, DO-41 75 V, 300 mA, Fast Switching, DO-35 30 V, 3 A, Schottky, DO-201AD HEATSINK Custom
Ferrite Bead 3.5 mm x 7.6 mm, 75 Ohms at 25 MHz, 22 AWG hole, Ferrite Bead 1 mH 1 mH, 0.15 A, Ferrite Core 2N3904 2N3906 200 k 200 11 k 10 150 10 k 10 0.33 1k 470 1.6 k 200 8.2 EE16 TNY274P PC817A NPN, Small Signal BJT, 40 V, 0.2 A, TO-92 PNP, Small Signal BJT, 40 V, 0.2 A, TO-92 200 k, 5%, 1/2 W, Carbon Film 200 R, 5%, 1/4 W, Carbon Film 11 k, 5%, 1/8 W, Carbon Film 10 R, 5%, 1/4 W, Carbon Film 150 R, 5%, 1/8 W, Carbon Film 10 k, 5%, 1/8 W, Carbon Film 10 R, 5%, 1/8 W, Carbon Film 0.33 R, 1%, 1/2 W 1 k, 5%, 1/8 W, Carbon Film 470 R, 5%, 1/8 W, Carbon Film 1.6 k, 5%, 1/8 W, Carbon Film 200 R, 5%, 1/8 W, Carbon Film 8.2 R, 2.5 W, Fusible/Flame Proof Wire Wound Bobbin, EE16, Horizontal, 10 pins TinySwitch-III, TNY274P, DIP-8C Opto coupler, 35 V, CTR 80-160%, 4-DIP
BZX79-B4V3 4.3 V, 500 mW, 2%, DO-35
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
7 Transformer Specification
7.1 Electrical Diagram
4
W1 Bias
5 10 NC NC W4 +5V 8
W3 Balance Winding 1 2 W2 Primary 3
Figure 4 - Transformer Electrical Diagram.
Copper Foil Wrapped in Tape
Starting lead to be connected to pin 1
Figure 5 - Copper Foil preparation for winding 3.
7.2
Electrical Specifications
Electrical Strength Primary Inductance Resonant Frequency 60 second, 60 Hz, from Pins 1-5 to Pins 6-10 Pins 2-3, all other windings open, measured at 132 kHz. Pins 2-3, all other windings open Pins 2-3, with Pins 8-10 shorted, measured at 132 kHz. 3000 VAC 2519H, -0/+12% 733 kHz (Min.) 65H (Max.)
Primary Leakage Inductance
7.3
Materials
Item [1] [2] [3] [4] [5] [6] [7] [8] Description Core: EE16 Gapped for 174 nH/T^2 Bobbin: EE16 Horizontal 10 Pins Magnet Wire: 34 AWG Triple Insulated Wire: 26 AWG Copper Foil 0.06 mm tick, 7.6mm wide Tape, 8.6 mm Wide Tape, 12 mm Wide Varnish
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
7.4
Transformer Build Diagram
Tape
W4
Tape
8 10 6T # 26 TIW X 2 1.5T Copper Foil
W3
Tape
1 2
40 T #34 AWG W2
Tape Tape Tape
40 T #34 AWG 3 5 4 10T 10T 40 T #34 AWG 20T # 34 AWG X 2
W1
Figure 6 - Transformer Build Diagram.
7.5
Transformer Construction
Bobbin Preparation Place the bobbin [2] on the winding machine with the primary pin side oriented to the left hand side. Start at Pin 4. Wind 10 bifilar turns of item [3] from left to right. Take the lead out of the winding area and terminate it at pin 5. Bring the lead back to the winding area and continue winding on the same layer. Wind 10 more turns. The whole layer must be uniformly and tightly wound. Cut the finishing lead just at the end of the winding. Use two layers of item [6] for basic insulation. Start at Pin 3. Wind 40 turns of item [3] from left to right in 1 layer. Use one layers of item [6] for basic insulation. Continue winding on a second layer. Wind 40 turns from right to left. Use one layers of item [6] for basic insulation. Wind 40 more from left to right on a third layer. Terminate on pin 2. The three layers should be uniformly and tightly wound. Use one layers of item [6] for basic insulation. Prepare winding as shown in figure 5 using items [5] and [7]. Very
W1 Bias Winding + Core Cancellation Basic Insulation
W2 Primary
Basic Insulation W3, Balance Winding Basic Insulation W4 Secondary Winding Outer Wrap Final Assembly
important. For this winding reverse the winding direction of the machine. Start at pin 1, Wind 1.5 turns of copper foil. Finish lead is
left unconnected. Use one layer of item [6] for basic insulation. Start at Pins 10. Wind 6 bifilar turns of item [4] Spread turns evenly across bobbin. Finish on Pin 8. Wrap windings with 3 layers of tape item [6]. Assemble and secure core halves. Varnish impregnate using item [8].
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
8 Transformer Spreadsheets
ACDC_TinySwitchIII_031006; Rev.1.11; Copyright Power Integrations 2006 ACDC_TinySwitch-III_031006_Rev1-11.xls; TinySwitch-III Continuous/Discontinuous Flyback OUTPUT UNIT Transformer Design Spreadsheet Customer Volts Minimum AC Input Voltage Volts Maximum AC Input Voltage Hertz AC Mains Frequency Volts Output Voltage (at continuous power) Power Supply Output Current (corresponding to peak Amps power) 5.33 Watts Continuous Output Power Efficiency Estimate at output terminals. Under 0.7 if no better data available Z Factor. Ratio of secondary side losses to the total losses in the power supply. Use 0.5 if no better data available mSec onds Bridge Rectifier Conduction Time Estimate uFara 13.6 ds Input Capacitance
INPUT
INFO
ENTER APPLICATION VARIABLES VACMIN VACMAX fL VO IO Power n 0.68 85 265 50 5.33 1.00
Z tC CIN
0.81 3.00 13.60
ENTER TinySwitch-III VARIABLES TinySwitch-III Chosen Device Auto TNY274 Standard Current Limit 0.250 Amps 0.267 Amps Maximum Current Limit 124000 Hertz Minimum Device Switching Frequency A^2k I^2f (product of current limit squared and 7.425 Hz frequency is trimmed for tighter tolerance) Reflected Output Voltage (VOR < 135 V 117 Volts Recommended) 10 Volts TinySwitch-III on-state Drain to Source Voltage 0.50 0.5 Volts Output Winding Diode Forward Voltage Drop 0.65 0.40 Ripple to Peak Current Ratio (KP < 6) Transient Ripple to Peak Current Ratio. Ensure KP_TRANSIENT > 0.25 Enter "RED" for reduced current limit (sealed adapters), "STD" for standard current limit or "INC" for increased current limit (peak or higher power applications) TNY274 Recommended TinySwitch-III
Chose Configuration ILIMITMIN ILIMITTYP ILIMITMAX fSmin I^2fmin VOR VDS VD KP KP_TRANSIENT
STD
0.233 Amps Minimum Current Limit
117.00
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
ENTER BIAS WINDING VARIABLES VB VDB NB VZOV 22.00 Volts 0.70 Volts 22.64 28.00 Volts Bias Winding Number of Turns Over Voltage Protection zener diode voltage. Bias Winding Voltage
UVLO VARIABLES V_UV_TARGET V_UV_ACTUAL RUV_IDEAL RUV_ACTUAL 87.87 Volts 84.70 Volts Target DC under-voltage threshold, above which the power supply with start Typical DC start-up voltage based on standard value of RUV_ACTUAL
3.43 Mohms Calculated value for UV Lockout resistor 3.30 Mohms Closest standard value of resistor to RUV_IDEAL
ENTER TRANSFORMER CORE/CONSTRUCTION VARIABLES Core Type Core Bobbin AE LE AL BW M L NS 6 EE16 EE16 EE16_B OBBIN EE16 P/N: P/N: 0.192 cm^2 3.5 cm 8.6 mm 0 mm 3 6 Enter Transformer Core PC40EE16-Z EE16_BOBBIN Core Effective Cross Sectional Area Core Effective Path Length Bobbin Physical Winding Width Safety Margin Width (Half the Primary to Secondary Creepage Distance) Number of Primary Layers Number of Secondary Turns
1140 nH/T^2 Ungapped Core Effective Inductance
DC INPUT VOLTAGE PARAMETERS VMIN VMAX 80 Volts 375 Volts Minimum DC Input Voltage Maximum DC Input Voltage
CURRENT WAVEFORM SHAPE PARAMETERS DMAX IAVG IP IR IRMS 0.63 0.11 Amps 0.23 Amps 0.15 Amps 0.15 Amps Duty Ratio at full load, minimum primary inductance and minimum input voltage Average Primary Current Minimum Peak Primary Current Primary Ripple Current Primary RMS Current
Page 12 of 25
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
TRANSFORMER PRIMARY DESIGN PARAMETERS LP LP_TOLERANCE NP ALG BM BAC ur LG BWE OD INS DIA AWG CM CMA 2519 uHenries 12 % 120 174 nH/T^2 2909 Gauss 952 Gauss 1654 0.12 mm 25.8 mm 0.21 mm 0.04 mm 0.17 mm 34 AWG 40 Cmils 273 Cmils/Amp Typical Primary Inductance. +/- 12% to ensure a minimum primary inductance of 2249 uH Primary inductance tolerance Primary Winding Number of Turns Gapped Core Effective Inductance Maximum Operating Flux Density, BM<3000 is recommended 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 Lumped parameters ISP ISRMS IRIPPLE CMS AWGS 4.68 Amps 2.29 Amps 2.06 Amps 458 Cmils 23 AWG Peak Secondary Current Secondary RMS Current Output Capacitor RMS Ripple Current Secondary Bare Conductor minimum circular mils Secondary Wire Gauge (Rounded up to next larger standard AWG value)
VOLTAGE STRESS PARAMETERS Maximum Drain Voltage Estimate (Assumes 20% zener clamp tolerance and an additional 10% temperature tolerance) Output Rectifier Maximum Peak Inverse Voltage
VDRAIN PIVS
640 Volts 24 Volts
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
9 Performance Data
All measurements performed at room temperature, 60 Hz input frequency. Efficiency measurements were done at the end of the cable on the load side. 9.1 Efficiency
EFFICIENCY Vs LINE VOLTAGE
80 70 Output Efficiency (%) 60 50 40 30 20 10 0 80 100 120 140 160 180 200 220 240 260 280 Line Voltage (AC)
IOUT=0.95A
Figure 7 - Efficiency vs. Input Voltage, Room Temperature, 60 Hz.
EFFICIENCY Vs LOAD
80 70 Output Efficiency (%) 60 50 40 30 20 10 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 Output Current (A)
115VAC 230VAC
Figure 8 - Efficiency Vs Load.
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
9.1.1 Active Mode CEC Measurement Data All single output adapters, including those provided with products, for sale in California after Jan 1st, 2007 must meet the California Energy Commission (CEC) requirement for minimum active mode efficiency and no load input power. Minimum active mode efficiency is defined as the average efficiency of 25, 50, 75 and 100% of rated output power with the limit based on the nameplate output power:
Nameplate Output (PO) <1W 1 W to 49 W > 49 W Minimum Efficiency in Active Mode of Operation 0.49 x PO 0.09 x ln (PO) + 0.49 [ln = natural log] 0.84 W
For adapters that are single input voltage only then the measurement is made at the rated single nominal input voltage (115 VAC or 230 VAC), for universal input adapters the measurement is made at both nominal input voltages (115 VAC and 230 VAC). To meet the standard the measured average efficiency (or efficiencies for universal input supplies) must be greater than or equal to the efficiency specified by the CEC/Energy Star standard.
Percent of Full Load 25 50 75 100 Average CEC specified minimum average efficiency (%) Efficiency (%) 115 VAC 72.63 73.31 72.08 69.25 71.82 230 VAC 69.55 73.25 72.5 70.80 71.52
63.48
More states within the USA and other countries are adopting this standard, for the latest up to date information please visit the PI Green Room: http://www.powerint.com/greenroom/regulations.htm
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DER-113 9.2
5 W Charger for Portable Audio Player
July 19, 2006
No-load Input Power
NO LOAD POWER CONSUMPTION
450 400 350 Input Power (mW) 300 250 200 150 100 50 0 80 100 120 140 160 180 200 220 240 260 280 Line Voltage (AC)
CEC LIMIT INPUT POWER
Figure 9 - Zero Load Input Power vs. Input Line Voltage, Room Temperature, 60 Hz.
Note: CEC limit is actually 500 mW, not 400 mW as shown in figure above. 9.3 Regulation
9.3.1 Output Characteristic. Measurements were done at the end of the cable on the load side.
OUTPUT CHARACTERISTIC
6 5 Output Voltage 4 3 2 1 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 Output Current (A)
115VAC 230VAC
Figure 10 - Output Characteristic.
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
10 Thermal Performance
When doing this test, the unit was put inside of a cardboard box. The box was put inside a thermal chamber. No free air was flowing around the unit.
Item Ambient TinySwitch (U1) Transformer (T1) Output Rectifier (D7) Output Capacitor (C7) Temperature (C) 85 VAC 50 93 81 88 77 265 VAC 50 83 84 90 78
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
11 Waveforms
11.1 Drain Voltage and Current, Normal Operation
Figure 11 - 85 VAC, Full Load. Upper: IDRAIN, 0.2 A / div Lower: VDRAIN, 100 V, 2 s / div
Figure 12 - 265 VAC, Full Load Upper: IDRAIN, 0.2 A / div Lower: VDRAIN, 200 V / 2 s /div
11.2 Output Voltage Start-up Profile
Figure 13 - Start-up Profile, 115VAC 1 V, 2 ms / div.
Figure 14 - Start-up Profile, 230 VAC 1 V, 2 ms / div.
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
11.3 Drain Voltage and Current Start-up Profile
Figure 15 - 85 VAC Input and Maximum Load. Upper: IDRAIN, 0.2 A / div. Lower: VDRAIN, 100 V & 2 ms / div.
Figure 16 - 265 VAC Input and Maximum Load. Upper: IDRAIN, 0.2 A / div. Lower: VDRAIN, 200 V & 2 ms / div.
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
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 17 - Transient Response, 115 VAC, 75-10075% Load Step. Top: Load Current, 0.5 A/div. Bottom: Output Voltage 200 mV, 0.5 ms / div.
Figure 18 - Transient Response, 230 VAC, 75-10075% Load Step Upper: Load Current, 0.5 A/ div. Bottom: Output Voltage 200 mV, 0.5 ms / div.
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
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 Figures 19 and 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)
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5 W Charger for Portable Audio Player
July 19, 2006
11.5.2 Measurement Results Ripple measurements were done at the end of the cable on the load side.
Figure 21 - Ripple, 85 VAC, Full Load. 50 uS, 100 mV / div
Figure 22 - 5 V Ripple, 115 VAC, Full Load. 50 uS, 100 mV / div
Figure 23 - Ripple, 230 VAC, Full Load. 50 uS, 100 mV / div
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
12 Conducted EMI
Figure 24 - Conducted EMI, Maximum Steady State Load, 115 VAC, 60 Hz, and EN55022 B Limits. Bolt Traces With OUTRETURN connected to ARTHAND, Light traces With OUTRETURN connected to GND
Figure 25 - Conducted EMI, Maximum Steady State Load, 230 VAC, 60 Hz, and EN55022 B Limits. Bolt traces with OUTRETURN CONNECTED TO GND. Light Traces with OUTRET Connected to ARTHAND
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DER-113
5 W Charger for Portable Audio Player
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13 Revision History
Date November 20, 2005 July 19, 2006 Author VC PV Revision 1.0 1.1 Description & changes Initial release Edits and corrections Reviewed JC / VC KM
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DER-113
5 W Charger for Portable Audio Player
July 19, 2006
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 NON-INFRINGEMENT 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, PeakSwitch, EcoSmart, Clampless, E-Shield, Filterfuse, PI Expert and PI FACTS are trademarks of Power Integrations, Inc. Other trademarks are property of their respective companies. (c)Copyright 2006 Power Integrations, Inc.
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Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com

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