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: IDRAIN, 0.10 A / div.
Figure 18 – 265 VAC Input and Maximum Load.
Upper: IDRAIN, 0.10 A / div.
Lower: VDRAIN, 100 V, 2 ms / div.
Lower: VDRAIN, 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 IDRAIN waveform in Figure 17
is the leading edge current spike not IDRAIN at the end of the switching cycle.
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