Download Switching Waveforms – Showing Switching

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Switching Waveforms – Showing Switching Frequency, Switch On Time and Switch Off Time measured on Inductor Current Waveform (Channel 1):
Switching Period of 1.423 uS = 703 kHz
Switch On Time of 580.2 nS = Duty Cycle of 41%
Switch off Time
Next is the Inductor Current: Measured on Input Side of Inductor with 0.15 ohm resistor
Peak inductor current is 105.6 mV / 0.15 ohm = 704 mA : Minimum is 72.6 mV / 0.15 ohm = 484 mA
Input Current: Measured after fuse with 0.2 ohm resistor
Output Led Current measured across R45 a 0.2 ohm resistor
Input voltage is 6.12 V giving an input power of 1.6 W
Led Voltage is 2.87 Average Led Current is 356 mA giving output power of 1 W : EFFECIENCY is 63 %
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