LNK501P_1 POWERINT [Power Integrations, Inc.], LNK501P_1 Datasheet
LNK501P_1
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LNK501P_1 Summary of contents
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Design Example Report Title 2.2W Charger using LNK501P Input 265 Vac Specification Output: 5.5V / 0.4A Application Cell Phone Charger Author Power Integrations Applications Department Document DER-13 Number Date February 4, 2004 Revision 1.0 Summary and Features • ...
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DER-13 1 Introduction................................................................................................................. 3 2 Power Supply Specification ........................................................................................ 4 3 Schematic................................................................................................................... 5 4 PCB Layout ................................................................................................................ 6 5 Bill of Materials ........................................................................................................... 7 6 Transformer................................................................................................................ 8 6.1 Transformer Winding .............................................................................................. 8 6.2 Electrical Specifications .......................................................................................... 8 6.3 Transformer Construction ...
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DER-13 1 Introduction This document is an engineering report giving performance characteristics of a 2.2W charger/adapter. The supply uses LinkSwitch – an integrated IC combining a 700V high voltage MOSFET, PWM controller, start-up, thermal shutdown, and fault protection circuitry. This ...
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DER-13 2 Power Supply Specification Description Input Voltage Frequency No-load Input Power (230Vac) Output Output Voltage 1 Output Current 1 Continuous Output Power Efficiency Operating Temperature Conducted EMI ...
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DER-13 3 Schematic D1,D2,D3,D4 L1 1N4005 1mH J1-1 4.7uF 90 - 265 VAC 400V + C1 J1-2 4.7uF RF1 400V 10 Ohm 2W Note: The LinkSwitch is designed for a battery load (see model in Figure 3 resistive ...
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DER-13 4 PCB Layout Figure 4: PCB Layout and Dimensions (0.001 inch) Page 2.2W Cell Phone Charger Tel: +1 408 414 9660 Fax: +1 408 414 9760 February 4, 2004 Power Integrations www.powerint.com ...
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DER-13 5 Bill of Materials Item Quantity Reference D1, D2, D3 RF1 10 ...
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DER-13 6 Transformer 6.1 Transformer Winding WDG3 133T 37AWG 4 4 WDG2 11T 4 x 36AWG 3 6.2 Electrical Specifications 60Hz 1minute, from Pins 1-3 to Electrical Strength Pins 5-6 Primary Inductance All windings open (Pin 1 -Pin 3 @ ...
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DER-13 6.3 Transformer Construction 5 6 Figure 6– Transformer Cross-section EF12.6 6.4 Winding Instructions Place the bobbin on the winding machine with pins 1-4 on the right side. Winding should be in forward direction. WDG1: Start at pin 4 temporarily. ...
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DER-13 WDG3: Primary Start at pin 4. Wind 143 turns of item 4 from right to left in winding 3 layers. three layers across entire width of bobbin. Wind uniformly all layers with tight tension. Finish on pin 1. Outer ...
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DER-13 7 Performance Data Measurements were done at room temperature unless otherwise specified. 7.1 Line and Load Regulation 100 200 Figure 7– Output VI Characteristic at selected input ...
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DER-13 7.2 Efficiency The efficiency was measured at max power (~6.4V, 0.4A), using a 16Ω resistor, at room temperature 115 Page 2.2W Cell Phone Charger EFFICIENCY CHARACTERISTIC 140 165 190 ...
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DER-13 7.3 No-Load Input Power 400 350 300 250 200 150 85 100 115 130 Figure 10– Zero load input power vs. Input line voltage 7.4 Thermal Measurement of Critical Parts Measurement was done with a 16Ω resistor load, (~6.4 ...
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DER-13 8 Waveforms 8.1 Drain Voltage and Current Figure 11– Linkswitch (U1) Vdrain and I drain Waveform. Vin=90Vac, Full load; CH3: Vdrain (100V/DIV); CH1: Idrain (0.1A/DIV) Figure 12– Linkswitch (U1) Vdrain and I drain Waveform. Vin=265Vac, Full load; CH3: Vdrain ...
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DER-13 8.2 Output Voltage Start-up Profile Figure 13– Output voltage at start-up, Battery model, Vin=90 Vac Figure 14– Output voltage at start-up, Battery model, Vin=265 Vac Page 2.2W Cell Phone Charger Tel: +1 408 414 9660 Fax: ...
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DER-13 8.3 Load Transient Response (0 0.4 A Load Step) CH2: Output Voltage (1V/DIV); CH3: Load Current CH2: Output Voltage (1V/DIV); CH3: Load Current Page 2.2W Cell Phone Charger Figure 15– Dynamic Load Transient 0.2 ...
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DER-13 8.4 Output Ripple Measurement 8.4.1 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 ...
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DER-13 8.4.2 Output Voltage Ripple Measurements were made using resistive load. Page 2.2W Cell Phone Charger Figure 19: Vin= 90 Vac at full load Figure 20: Vin= 265 Vac at full load Tel: +1 408 414 9660 ...
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DER-13 9 EMI Tests The EMI tests were done at 230Vac & 115V (Line & Neutral), with a 20 Ω resistive load. 9.1 CSPR22B at 230 Vac Figure 21 – Conducted EMI, Vin= 230 Vac line, CSPR22B Limits, ...
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DER-13 9.2 CSPR22B at 115 Vac – Figure 23 Conducted EMI, Vin= 115V Vac line, CSPR22B Limits, NEUTRAL, Output return Figure 24 – Conducted EMI, Vin= 115V Vac line, CSPR22B Limits, LINE, Output return connected Page ...
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DER- Revision History Date Author February 4, 2004 ME Page 2.2W Cell Phone Charger Revision Description & changes 1.0 Initial release Tel: +1 408 414 9660 Fax: +1 408 414 9760 February 4, 2004 Reviewed ...
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DER-13 Page 2.2W Cell Phone Charger Notes Tel: +1 408 414 9660 Fax: +1 408 414 9760 February 4, 2004 Power Integrations www.powerint.com ...
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DER-13 For the latest updates, visit our Web site: 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 ...