LAB 8 Report - Prana Koirala Georgia Institute of...

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Prana Koirala Georgia Institute of Technology ECE 3072- L10 LAB#8 – Power Conversion: Buck Converter Date Summited: 11/20/2015
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Lab 8 – Power Conversion: Buck Converter Pr o ce du r e The following are the values of the parameters used in the experiment. Note that both the voltage probe and the current probe have scaling factors when viewed on the oscilloscope (voltage probe is adjustable; current probe is 100mV = 1A). L = 100 µH C 1 = 330 µF C 2 = 83 µF 1. We will use the function generator to create the variable duty cycle PWM gate signal for the MOSFET. Create a 0-10V, 20kHz square wave with variable duty cycle, press OUTPUT button. Look at the signal on the oscilloscope to verify you have done this correctly. 2. Assemble the circuit as shown in Figure 1 . The diode D in Figure 1 is the body diode of the other MOSFET on the switch module that isn’t being given a switching input, as shown in Figure 4 . Please get the circuit checked by TA. D G D S Figure 4 – Diagram showing that the body-diode of a MOSFET can be used simply as a diode when no gate signal is applied 3. Before connecting Vs to the circuit, measure the voltage from the DC supply with a multimeter to ensure it is set to 5V. Now power the circuit with a DC
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