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Initially, it should sense or monitor voltage and current at the input of the drive and at the load as well. Is that possible to measure continuous value..???
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Think of the waveforms you see on a digital oscilloscope. These are samples from an ADC at a particular timescale, eg., a 50MHz ADC samples every 1/50MHz = 20ns. When you plot those samples over several microseconds scaled to units of volts, it looks like the original analog waveform.
You can do that in an FPGA if you like, but if you already have an oscilloscope for looking at those waveforms, why bother?
You need to figure out exactly what the FPGA needs to measure, if that measurement is used as part of a control loop.
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As you said it has a Max. Voltage of 30V and Current of 15mA. Is that possible to operate it with the 50kHz clock frequency..? coz in the Alter circuit board we have clock signal of 50MHz.
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Measuring a voltage of 30V and current of 15mA is fine. You just need to design the ADC circuit appropriately.
The FPGA clock can be 50MHz or higher using a PLL. The IGBT gate drivers can be operated at kHz frequencies. Its up to your logic in the FPGA to generate the slower IGBT gate drive signals. Those signals can be generated using counters clocked at 50MHz, and a state machine to sequence the gate driver pulses.
Cheers,
Dave
Honored Contributor
