Preliminary Considerations using Power Diode Data Sheet Information
Before starting a device characterization, study the manufacturer’s data sheet for the power diode to characterize. Each manufacturer has a unique design and naming convention for their data sheets. Different manufacturers also measure device characteristics differently.
- First, determine the nominal conditions for the device. Ideally, these are the conditions at which the device will be operated. Practically, these conditions should be those for which you have the most information closest to the desired operating conditions. Search the data sheet and look at all available data to decide on the nominal point. The measurement conditions for the dynamic characteristics (Qrr, Trr) are generally good choices.
- DC characteristics are parameterized using the forward characteristics, found as plots in the sheet.
- Dynamic behavior is characterized using the reverse
recovery characteristics, found either in a table or read
from a plot.
Note:
The Power Diode wizard documentation includes information and recommended settings for several manufacturers. Make sure to consult these sections in the documentation when characterizing a device.