We can calculate the output voltage of the Buck converter using the following formula:
Vo = D * Vin
Using the given values, we get:
Vo = 0.5 * 100 = 50 V
Therefore, the measured output voltage of 80 V is not possible with the given input voltage and duty cycle. However, the measured output voltage of 40 V is possible, and it can be explained by the following reasons:
Load resistance: The output voltage of a Buck converter depends on the load resistance. If the load resistance is lower than expected, the output voltage will also be lower.
Measurement error: It is possible that there was an error in measuring the output voltage, which led to a reading of 40 V instead of the actual output voltage.
Circuit malfunction: There may be a fault in the Buck converter circuit, such as a short circuit or an open circuit, which could cause the output voltage to be lower than expected.
Therefore, while it is not possible to have an output voltage of 80 V with the given input voltage and duty cycle, an output voltage of 40 V is possible due to factors such as load resistance, measurement error, or circuit malfunction.