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Interesting.
Did u ever observe that if the pulse width of the TL494 gets under say 8uSec (with pin 13 tied hi) with a low frequency (1K clock) it will divide the clock in half and widen the pulse width?
That really depends on what you want to do.
There is a family of parts that includes the UC3843. They are current mode which I like. 8-pin. Good for 110/220 power supplies.
Here is a interesting part. Used for those wall wort, cell phone charger things. Most of these have a 700V MOSFET inside.
I am using some small DC to DC parts that run at 1mhz. Very small inductor, capacitor.
I like resonant power supplies but that is complicated.
Usually, with the tl494, to achieve a 96% Duty range I would have pin 13 tied to 5V and parallel the two outputs.
Can't the same be done with pin 13 tied to ground and a single output used?
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