LNK500P_1 POWERINT [Power Integrations, Inc.], LNK500P_1 Datasheet - Page 3

• Manufacturer Part Number: LNK500P_1
• Description: 2.4W Cell Phone Charger
• Manufacturer: POWERINT [Power Integrations, Inc.]

DER-12
2.4W Cell Phone Charger using LNK500P
February 4, 2004
List Of Figures
Figure 1 – Flyback Converter – 2.4W 6V 0.4A................................................................................................ 5
Figure 2 – PCB Layout .................................................................................................................................... 5
Figure 3 – Transformer Winding...................................................................................................................... 7
Figure 4 – Transformer construction ............................................................................................................... 8
Figure 5 – Efficiency Vs Output Current ........................................................................................................ 10
Figure 6 – Load Regulation ........................................................................................................................... 11
Figure 7 – Line Regulation ............................................................................................................................ 11
Figure 8 – No Load Input Power.................................................................................................................... 12
Figure 9 – Oscilloscope Probe Prepared for Ripple Measurement............................................................... 13
Figure 10 – Oscilloscope Probe with Probe Master 5125BA BNC Adapter .................................................. 13
Figure 11 – Output Voltage Ripple (worst case) at Vin = 90 Vac, Vo = 5.44 V, Io = 400 mA ....................... 14
Figure 12 – EN55022 Class B, Line, artificial hand connected to output return ........................................... 15
Figure 13 – EN55022 Class B, Neutral, artificial hand connected to output return....................................... 15
Figure 14 – EN55022 Class B, Line, with out artificial hand connected to output return .............................. 16
Figure 15 – EN55022 Class B, Neutral, with out artificial hand connected to output return ......................... 16
List Of Tables
Table 1 – Power Supply Specification ______________________________________________________ 4
Table 2 – Bill of Materials ________________________________________________________________ 6
Table 3 – Transformer BOM______________________________________________________________ 9
Important Notes:
Although this board is designed to satisfy safety isolation requirements, the engineering
prototype has not been agency approved. Therefore, all testing should be performed
using an 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.
Power Integrations
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