EPR-85 Datasheet, PDF (22/32 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 85 - 2 W Charger using LinkSwitch-LP

EP-85 6 V, 330 mA Low Cost Charger
04-Oct-2005
10.3 Drain Voltage and Current Start-Up Profile
Drain Voltage and Current waveforms are presented with the simulated battery load.
Figure 17 – 90 VAC Input and Maximum Load.
Upper: I_DRAIN, 0.10 A / div.
Lower: V_DRAIN, 100 V, 2 ms / div.
Figure 18 – 265 VAC Input and Maximum Load.
Upper: I_DRAIN, 0.10 A / div.
Lower: V_DRAIN, 200 V, 2 ms / div.
At start-up with a battery load, Drain current and Drain voltages are well controlled and
within acceptable operating limits. Note that the peak of the I_DRAIN waveform in Figure 17
is the leading edge current spike not I_DRAIN at the end of the switching cycle.
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