A while back, I posted about putting caps in parallel. Sometimes it makes sense to do that either to reduce the effective series resistance (ESR) or to better respond to different frequencies of ripple, spikes or distortion.
But here is my question - Take a look at the schematic below. This is mostly for you motor control and power component folks, but anyone can take a stab at it.
MOSFETs typically have their own flyback diode built in. But it may not be fast enough or good enough in some way or other, so it's common practice to use external flyback diodes in parallel with the internal one. In this schematic, each leg of the H-bridge has three MOSFETs in parallel. It also has D7 and D8 as flyback diodes for the bottom legs. For the moment, ignore the fact that the top legs don't have any external flyback.
Here's the question: Is is equally effective to have a single big flyback for the three parallel transistors as it is to have an individual flyback for each MOSFET?
Is snow cold? Perhaps, but it's all relative.
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