 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Title Engineering Prototype Report for EP-84 <30 mW No-Load Consumption AC-DC Power Supply Using TNY264P (TinySwitch(R)-II) 85 VAC to 265 VAC Input, 5 V, 600 mA, 3 W Output Cell Phone Charger Power Integrations Application Department EPR-84 23-May-05 1.0 Specification Application Author Document Number Date Revision Summary and Features * * * * Less than 30 mW no-load power consumption over universal input range Meets EN55022/CISPR22 Class B without a Y capacitor Low cost, low component-count solution Active mode average efficiency exceeds the minimum CEC requirements with good margin at 115 VAC & 230 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. Power Integrations 5245 Hellyer Avenue, San Jose, CA 95138 USA. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 Table Of Contents Introduction............................................................................................................. 3 Power Supply Specification .................................................................................... 4 Schematic............................................................................................................... 5 Circuit Description .................................................................................................. 6 4.1 Input Rectification, Bulk Capacitance and EMI Filtering...................................... 6 4.2 Primary DRAIN Voltage Clamp Circuit................................................................ 6 4.3 Auxiliary Bias Supply .......................................................................................... 6 4.4 Output Rectification and Filtering ........................................................................ 7 4.5 Output Voltage Sensing, Feedback and Constant Current Control..................... 7 4.6 Transformer: Conducted EMI Noise Cancellation and Suppression Windings.... 8 5 PCB Layout ............................................................................................................ 9 6 Bill Of Materials .................................................................................................... 10 7 Transformer Specification..................................................................................... 11 7.1 Electrical Diagram............................................................................................. 11 7.2 Electrical Specifications .................................................................................... 11 7.3 Materials ........................................................................................................... 12 7.4 Transformer Build Diagram ............................................................................... 12 7.5 Transformer Construction ................................................................................. 13 8 Transformer Spreadsheets................................................................................... 14 9 Performance Data ................................................................................................ 17 9.1 Efficiency........................................................................................................... 17 9.2 No-load Input Power ......................................................................................... 18 9.3 Regulation......................................................................................................... 19 9.3.1 Load........................................................................................................... 19 9.3.2 Line ............................................................................................................ 19 10 Thermal Performance........................................................................................... 20 11 Waveforms ........................................................................................................... 21 11.1 Drain Voltage and Current, Normal Operation .................................................. 21 11.2 Output Voltage Start-up Profile ......................................................................... 21 11.3 Drain Voltage and Current Start-up Profile ....................................................... 22 11.4 Load Transient Response (75% to 100% Load Step) ....................................... 22 11.5 Output Ripple Measurements ........................................................................... 23 11.5.1 Ripple Measurement Technique ................................................................ 23 11.5.2 Measurement Results................................................................................ 24 12 Conducted EMI..................................................................................................... 25 13 Revision History.................................................................................................... 27 Important Note: Although this circuit board has been designed to meet 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 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 2 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 1 Introduction This engineering report describes a constant voltage, constant current (CV/CC) 5 VDC, 600 mA wall-mounted charger for cell phones, PDAs or other battery powered portable devices. It was designed around a TinySwitch-II IC and is intended as a general-purpose evaluation platform for the TinySwitch-II product family. The key performance characteristic of this circuit is its extremely low no-load power consumption of 30 mW. This report contains the specification of the power supply, its circuit diagram, the overall bill of materials (BOM) for the supply, transformer construction documentation, including a copy of the PI Expert Design results worksheet, the printed circuit board layout, and the circuit's electrical performance data, including conducted EMI measurements. Figure 1 - Populated Circuit Board Photograph. Page 3 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 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 Total Output Power Continuous Output Power Peak Output Power Efficiency Environmental Conducted EMI Safety Meets CISPR22B / EN55022B Designed to meet IEC950, UL1950 Class II o Symbol VIN fLINE Min 85 47 Typ Max 265 64 0.03 Units VAC Hz W V mV A W W % Comment 2 Wire - no Protective Earth 50/60 VOUT1 VRIPPLE1 IOUT1 POUT POUT_PEAK 5.0 100 0.6 3.0 3.0 60 5% 20 MHz BW, battery loaded CC Mode Measured at POUT (3 W), 25 oC Ambient Temperature TAMB 0 40 C Free convection, sea level Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 4 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 3 Schematic Figure 2 - EP-84 Schematic. Page 5 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 4 Circuit Description This circuit is configured as a flyback. The ultra-low standby consumption is achieved by powering the IC from an auxiliary primary transformer winding, which disables the internal high voltage current source that normally powers the device directly from its DRAIN pin. Details of specific circuit functions will be described more fully in the following paragraphs. 4.1 Input Rectification, Bulk Capacitance and EMI Filtering AC input power is rectified by a full bridge, consisting of D1 through D4. The rectified DC is then filtered by the bulk storage capacitors C1 and C2. Inductor L1 and ferrite bead L2 separate C1 and C2 from each other. Components L1, C1 and C2 form a pi () filter, which attenuates conducted differential-mode EMI noise. Fusible resistor RF1 has multiple functions. It is a fuse, an in-rush current limiting device, a final low pass filter stage (with C1) for conducted EMI attenuation, and an initial stage of input surge voltage attenuation. 4.2 Primary DRAIN Voltage Clamp Circuit The DRAIN voltage clamp circuit is comprised of Zener diode VR1, R1 and diode D5. D5 and VR1 clamp the amplitude of the voltage spike that the transformer leakage inductance generates at switch turn-off, to keep it beneath the device's maximum DRAINto-SOURCE voltage rating (700 V). Resistor R1 damps the high frequency oscillation caused by leakage inductance, which improves the conducted EMI performance of the circuit. The reflected output voltage VOR, which is determined by the transformer turns ratio (13:1), has been kept low (89 V) to minimize the power dissipation in the clamp circuit. 4.3 Auxiliary Bias Supply The auxiliary bias supply circuit is made up of the primary-side transformer bias winding, diode D6, capacitor C5 and resistor R2. Diode D6 rectifies the output of the winding and C5 filters it. The winding has just enough turns so that it will provide 550 A to 600 A (through R2) into the BYPASS (BP) pin at no-load (which fully disables the internal current source). The bias winding is wound between the main primary winding and the core. By being "sandwiched" in the middle, it acts as a "shield" between the primary and the core. In that capacity, it reduces primary-to-core induced displacement current and therefore, EMI generation. C4 is the standard BP pin decoupling capacitor, which should always be a 50 V, 0.1 F ceramic capacitor, located close to the IC. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 6 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger No Load Consumption (mW) 80 70 60 50 40 30 20 10 0 300 115 VAC 230 VAC 400 500 600 700 800 900 (A) BYPASS Pin Current (uA) Figure 3 - No-load Consumption vs. BYPASS Pin Current. 4.4 Output Rectification and Filtering Output rectification and filtering are accomplished by Schottky diode D7, capacitors C6 and C7 and ferrite bead L3. Resistor R6 and C3 dampen out the high frequency interaction between D7, T1 and U1 to reduce conducted EMI noise generation. Capacitor C6 filters the initial rectified output, while L3 and C7 serve as a secondary lowpass filter stage, which further attenuates the output ripple voltage. 4.5 Output Voltage Sensing, Feedback and Constant Current Control Transistor Q1, resistors R3, R4 and R5, Zener diode VR2, and opto-isolator U2 sense the output voltage and current, and feedback their information to the TinySwitch-II controller. Components Q1, R3, VR2 and U2 comprise the constant voltage (CV) mode control loop while R4, R5 and U2 make up the constant current (CC) mode control loop. CC Mode Operation When the battery (load) is discharged, little voltage will be developed across the output of the charger before the desired current limit (600 mA) is surpassed. Whenever the current through R5 exceeds 600 mA, enough voltage develops across R4 to forward bias U2's LED, turning its phototransistor on. This causes the TinySwitch-II to skip switching cycles until the output current no longer exceeds 600 mA. Thus, until the output current drops below 600 mA, R4, R5 and U2 comprise the CC control loop. Page 7 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 CV Mode Operation During CV operation the output voltage is determined by the voltage across R3 and the value of VR2. The value of R3 is selected such that as Q1 turns on, at the transition of CC to CV operation, the current through VR2 is close to its test current. The voltage across R3 is equal to the VBE of Q1 (~0.6 V) value to be calculated. By adjusting the value of R3 the output voltage can be tuned to take account of cable drop and the discrete values of VR2. Once Q1 is biased on current is fed thorough U2's LED, turning its phototransistor on. 4.6 Transformer: Conducted EMI Noise Cancellation and Suppression Windings Transformer T1 has 2 shield windings, one combined with the bias winding and one between primary and secondary. These act to reduce primary to secondary displacement currents, which reduces common-mode conducted EMI. Both additional windings are detailed in Section 7, Transformer Specification. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 8 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 5 PCB Layout Figure 4 - Printed Circuit Layout (dimensions 0.001). Page 9 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 6 Bill Of Materials Item Qty 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 2 1 1 1 1 1 4 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 C1, C2 C3 C4 C5 C6 C7 D1-D4 D5 D6 D7 VR1 VR2 L1 L2, L3 RF1 R1 R2 R3 R4 R5 R6 Q1 T1 U1 U2 Description 4.7 F, 400 V, electrolytic capacitor 470 pF, 100 V, ceramic 0.1 F, 50 V, ceramic 47 F, 16 V, low ESR electrolytic 470 F, 10 V, low ESR electrolytic 100 F, 10 V, low ESR electrolytic 1 A, 600 V, general purpose diode 1 A, 600 V, glass passivated diode 200 mA, 100 V diode 1 A, 60 V, Schottky diode 130 V, 1.5 W, Zener diode 5.1 V, 2%, Zener diode Inductor, 1.0 mH Ferrite bead 8.2 , 1 W fusible resistor 200 , 1/2 W 9.2 k, 1/8 W 1.5 k, 1/8 W 820 , 1/8 W 2.4 , 2.0 W 33 , 1/4 W General purpose PNP BJT Transformer EE13 Low power off-line switcher IC Optocoupler P/N Manufacturer Any Any Any Any Any Any 1N4005 Any 1N4007G Any 1N4148 Any 11DQ06 Any BZY97C130 Vishay BZX79B5V1 Vishay Tokin Any Vitrohm Any Any Any Any Any Any 2N3906 Philips Custom TNY264P PI PC817A Sharp Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 10 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 7 Transformer Specification 7.1 Electrical Diagram 4 WDG # 1 Bias 15T #32 AWG x 2 3 1 8 WDG # 2 Primary 102T #33 AWG Secondary 8T #24 T.I.W. WDG # 4 2 1 Shield 3T #31 AWG x 4 WDG # 3 7 NC Figure 5 -Transformer Electrical Diagram. 7.2 Electrical Specifications 1 second, 60 Hz, from Pins 1-4 to Pins 7-8 Pins 1-2, all other windings open, measured at 100 kHz, 0.4 V RMS Pins 1-2, all other windings open Pins 1-2, with Pins 7-8 shorted, measured at 132 kHz, 0.4 V RMS 3000 VAC 1.89 mH +/- 10% 800 kHz (Min.) 25 H (Max.) Electrical Strength Primary Inductance Resonant Frequency Primary Leakage Inductance Page 11 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 7.3 Materials Description 2 Core: EE13, TDK PC40 or equivalent. ALG 180 nH/t Bobbin: Horizontal 8 pin, EE13, Hical Magnet Wire: #31 AWG (Shield winding) Magnet Wire: #32 AWG (Bias winding) Magnet Wire: #33 AWG (Primary winding) Triple Insulated Wire: #24 AWG (Secondary winding) Tape: 3M 1298 Polyester Film (white) 299 mils (7.6 mm) wide by 2.0 mils thick Item [1] [2] [3] [4] [5] [6] [7] 7.4 Transformer Build Diagram Secondary 8 7 Shield 1 Tape 1 Primary 2 Tape 3 4 Bias Figure 6 - Transformer Build Diagram. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 12 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 7.5 Transformer Construction Set Bobbin Bias and Core Cancellation Insulation Set the bobbin Pin 1 - Pin 4 right-hand side. Pin 1 would be located at top right side. Start at Pin 6 temporarily. Wind 15 turns of item [4] with 2 in parallel (bifilar) from left to right uniformly without any space between turns, in a single layer across the entire width of the bobbin. Finish on Pin 4. Move the start end from Pin 6 to Pin 3. Add 4 Layers of tape [7] for insulation. Start at Pin 2. Wind 34 turns of item [5] from right to left. After finishing the first layer, return to right and add one layer of the tape. Then wind 34 turns of item [4] from right to left; after finishing the second layer, return to right and add one layer of the tape. Again, wind 34 turns of item [4] from right to left; after finishing the third layer, return to right and finish on Pin 1. Wind all layers uniformly without any space between turns. Add 3 Layers of tape [7] for insulation. Start at Pin 1. Wind 3 turns of item [3] with four wires (quadfilar) in parallel from right to left uniformly without any space between turns during winding, in a single layer across 60% of the bobbin width. Cut the wires after finishing the third turn. Add 1 Layer of tape [7] for insulation. Temporarily start at Pin 3. Wind 8 turns of item [6] from right to left in a layer without any space between adjacent turns, across the entire width of the bobbin; finish on Pin 7. Then move the Start lead to Pin 8. Add 2 Layers of tape [7] for insulation. Primary Winding Layer Insulation Shield Winding Insulation Secondary Winding Outer Insulation Page 13 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 8 Transformer Spreadsheets ACDC_TNYII_Rev1_1_032701 Copyright Power Integrations Inc. 2001 INPUT INFO OUTPUT UNIT ACDC_TNYII_Rev1_1_032701.xls: TinySwitch-II Continuous/Discontinuous Flyback Transformer Design Spreadsheet ENTER APPLICATION VARIABLES VACMIN 85 VACMAX 265 fL 50 VO 5 PO 3.38 n 0.52 Z 0.65 tC 3 CIN 9.4 Volts Volts Hertz Volts Watts Minimum AC Input Voltage Maximum AC Input Voltage AC Mains Frequency Output Voltage Output Power Efficiency Estimate Loss Allocation Factor ms Bridge Rectifier Conduction Time Estimate uFarads Input Filter Capacitor ENTER TinySwitch-II VARIABLES TNY-II TNY264 Universal Chosen Device TNY264 Power 6W Out 0.233 Amps ILIMITMIN 0.267 Amps ILIMITMAX 132000 Hertz fS 120000 Hertz fSmin fSmax VOR VDS VD KP 88.8 9.6 1.94 0.65 144000 Hertz Volts Volts Volts 85 VAC to 265 VAC 9W 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 69 Volts 375 Volts Minimum DC Input Voltage Maximum DC Input Voltage Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 14 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger CURRENT WAVEFORM SHAPE PARAMETERS DMAX 0.60 IAVG 0.09 Amps IP 0.23 Amps IR 0.15 Amps IRMS 0.13 Amps Maximum Duty Cycle Average Primary Current Minimum Peak Primary Current Primary Ripple Current Primary RMS Current TRANSFORMER PRIMARY DESIGN PARAMETERS LP 1890 uHenrie Primary Inductance s NP 102 Primary Winding Number of Turns ALG 180 nH/T^2 Gapped Core Effective Inductance 2883 Gauss Flux Density, IP (BP<3000) BM BAC 819 Gauss AC Flux Density for Core Loss Curves (0.5 X Peak to Peak) ur 1588 Relative Permeability of Ungapped Core LG 0.10 mm Gap Length (Lg > 0.1 mm) BWE 22.2 mm Effective Bobbin Width OD 0.22 mm Maximum Primary Wire Diameter including insulation INS 0.04 mm Estimated Total Insulation Thickness (= 2 * film thickness) DIA 0.17 mm Bare conductor diameter AWG 34 AWG Primary Wire Gauge (Rounded to next smaller standard AWG value) CM 40 Cmils Bare conductor effective area in circular mils CMA 319 Cmils/A Primary Winding Current Capacity (200 < CMA < mp 500) TRANSFORMER SECONDARY DESIGN PARAMETERS (SINGLE OUTPUT / SINGLE OUTPUT EQUIVALENT) Lumped parameters ISP 2.98 Amps Peak Secondary Current ISRMS 1.32 Amps Secondary RMS Current IO 0.68 Amps Power Supply Output Current IRIPPLE 1.14 Amps Output Capacitor RMS Ripple Current CMS 264 Cmils Secondary Bare Conductor minimum circular mils AWGS 25 AWG Secondary Wire Gauge (Rounded up to next larger standard AWG value) DIAS 0.46 mm Secondary Minimum Bare Conductor Diameter ODS 0.93 mm Secondary Maximum Outside Diameter for Triple Insulated Wire INSS 0.23 mm Maximum Secondary Insulation Wall Thickness VOLTAGE STRESS PARAMETERS VDRAIN PIVS 581 Volts 34 Volts Maximum Drain Voltage Estimate (Includes Effect of Leakage Inductance) Output Rectifier Maximum Peak Inverse Voltage Page 15 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 TRANSFORMER SECONDARY DESIGN PARAMETERS (MULTIPLE OUTPUTS) st 1 output VO1 5.0 Volts Output Voltage IO1 0.600 Amps Output DC Current PO1 3.00 Watts Output Power VD1 1.9 Volts Output Diode Forward Voltage Drop NS1 8.00 Output Winding Number of Turns ISRMS1 1.173 Amps Output Winding RMS Current IRIPPLE1 1.01 Amps Output Capacitor RMS Ripple Current PIVS1 34 Volts Output Rectifier Maximum Peak Inverse Voltage CMS1 AWGS1 DIAS1 ODS1 235 Cmils 26 AWG 0.41 mm 0.93 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 2nd output VO2 IO2 PO2 VD2 NS2 ISRMS2 IRIPPLE2 PIVS2 12.0 0.001 0.7 Volts Amps 0.01 Watts Volts 14.64 0.001 Amps 0.00 Amps 66 Volts 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 CMS2 AWGS2 DIAS2 ODS2 0 Cmils 56 AWG 0.01 mm 0.51 mm Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 16 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 9 Performance Data All measurements were performed at room temperature, at 60 Hz input frequency, unless otherwise specified. An electronic load was used to measure efficiency. All output voltages were measured at the end of the power supply output cable. The resistance of the output cable was approximately 0.2 . 9.1 Efficiency Efficiency 80.00% 70.00% Efficiency (%) 60.00% 85 VAC 115 VAC 50.00% 230 VAC 265 VAC CEC 40.00% 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 Output Current (Amps) Figure 7 - Efficiency vs. Output Current at Four Line Voltages, Room Temperature, 60 Hz. The CEC requirement for a 3 W charger is an average of 58.9% at both 115 VAC and 230 VAC*. POWER LEVEL 115 VAC 230 VAC 25% 67.8% 66.5% 50% 63.5% 62.6% 75% 60.6% 60.1% 100% 56.7% 56.9% Ave 62.2% 61.5% The average efficiency exceeds the CEC requirement by a considerable margin at both input voltages. *Refer to the California Energy Commission Appliance Efficiency Regulations (CEC 4002005-012). Page 17 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 9.2 No-load Input Power 23-May-05 EP-84 No-Load Input Power vs. Input Voltage 35 33 31 Input Power (mW) 29 27 25 23 21 19 17 15 85 105 125 145 165 185 205 225 245 265 Input Voltage (VAC) Figure 8 - No-Load Input Power vs. Input Line Voltage, Room Temperature, 60 Hz. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 18 of 28 23-May-05 9.3 Regulation EPR-84 - Single Output, Universal Input, Cell Phone Charger 9.3.1 Load EP-84 Load Regulation 105% 103% Regulation (% of Nominal) 101% 99% 97% 95% 93% 91% 89% 87% 85% 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 85 VAC 115 VAC 230 VAC 265 VAC Output Load (A) Figure 9 - Load Regulation, Room Temperature. 9.3.2 Line EP-84 Line Regulation, Full Load 105% 103% Regulation (% of Nominal) 101% 99% 97% 95% 93% 91% 89% 87% 85% 80 100 120 140 160 180 200 220 240 260 280 Input Voltage (VAC) Figure 10 - Line Regulation, Room Temperature, Full Load. Page 19 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 10 Thermal Performance Temperature (C) Item Ambient TinySwitch (U1) Transformer (T1) Rectifier (D7) Clamp Zener (VR1) Common Mode (L1) Output Capacitor (C6) 106 87 85 83 78 80 85 VAC 40 C 84 83 82 72 67 79 230 VAC Test Conditions: The power supply was sealed in a plastic enclosure. The size for the enclosure was 2.86 x 1.97 x 1.06 (in inches). The enclosure was installed into a cardboard box to reduce the influence from the air circulation inside of the environment chamber. The cardboard box was placed in the environmental chamber. The ambient temperature was measured inside the cardboard box. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 20 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 11 Waveforms 11.1 Drain Voltage and Current, Normal Operation Figure 11 - 85 VAC, Full Load. Upper: IDRAIN, 0.1 A / div. Lower: VDRAIN, 100 V, 5 s / div. Figure 12 - 265 VAC, Full Load. Upper: IDRAIN, 0.1 A / div. Lower: VDRAIN, 200 V / div, 5 s / div. 11.2 Output Voltage Start-up Profile Figure 13 - Start-up Profile, 115 VAC 1 V, 5 ms / div. Figure 14 - Start-up Profile, 230 VAC 1 V, 5 ms / div. Page 21 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 11.3 Drain Voltage and Current Start-up Profile 23-May-05 Figure 15 - 85 VAC Input and Maximum Load. Upper: IDRAIN, 0.1 A / div. Lower: VDRAIN, 100 V, 100 s / div. Figure 16 - 265 VAC Input and Maximum Load. Upper: IDRAIN, 0.1 A / div. Lower: VDRAIN, 200 V, 100 s / div. 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, 75-100-75% Load Step. Upper: Load Current, 0.2 A / div. Lower: Output Voltage 50 mV, 1 ms / div. Figure 18 - Transient Response, 230 VAC, 75-100-75% Load Step. Upper: Load Current, 0.2 A / div. Lower: Output Voltage 50 mV, 1 ms / div. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 22 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 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 23 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 11.5.2 Measurement Results Figure 21 - Ripple, 85 VAC, Full Load. 2 ms, 10 mV / div. Figure 22 - 5 V Ripple, 115 VAC, Full Load. 2 ms, 10 mV / div. Figure 23 - Ripple, 230 VAC, Full Load. 2 ms, 10 mV / div. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 24 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 12 Conducted EMI Figure 24 - Conducted EMI, Maximum Steady State Load, 230 VAC, 60 Hz, Line, Artificial Hand Connected and EN55022 B Limits. Figure 25 - Conducted EMI, Maximum Steady State Load, 230 VAC, 60 Hz, Neutral, Artificial Hand Connected and EN55022 B Limits. Page 25 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 Figure 26 - Conducted EMI, Maximum Steady State Load, 230 VAC, 60 Hz, Line, Without Artificial Hand Connected and EN55022 B Limits. Figure 27 - Conducted EMI, Maximum Steady State Load, 230 VAC, 60 Hz, Neutral, Without Artificial Hand Connected and EN55022 B Limits. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 26 of 28 23-May-05 EPR-84 - Single Output, Universal Input, Cell Phone Charger 13 Revision History Date 23-May-05 Author AJM Revision 1.0 Description & changes First Release Page 27 of 28 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com EPR-84 - Single Output, Universal Input, Cell Phone Charger 23-May-05 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, 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 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 28 of 28 |
Price & Availability of EPR-84
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |