Thanks BradtheRad. How about the duty cycle. Can it be as high as 90% or should I bring it between 50 and 70%?
Optimum results will come from adjusting duty cycle and frequency both.
Here are some more tips about operation:
A boost converter provides current to the load regardless whether the switching device is on or off.
An led will automatically and instantly gobble up whatever charge is on the capacitor, until it is down to the forward threshold of the led.
Attach the load before applying power to a boost converter, so the capacitor charge will stay within reasonable levels.
Whatever watts you want at the load, is the watts that has to come through the coil.
Thus if your load draws 100 mA at 96 V...
it draws 9.6 watts...
therefore your 12V supply must feed the converter an average of 800 mA (really more like 900 mA). This is the current you should be able to read on an ammeter.
In your layout, no matter what is your duty cycle, you must allow sufficient time for coil current to build to a peak of a couple of amps.
A given frequency of operation tends to go with a certain **henry value** of coil. Example, a 100 uH coil is often pulsed at tens of kHz.
An important factor is resistance in your coil, supply and switching device. These must not restrict current through the coil.
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Edited to clarify that 'size' of coil means henry value of coil.
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