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Running a 2V motor from a 12V H bridge is perfectly fine as long as you don't exceed 1/6 duty cycle, at least not sustained. No, you don't want the transistors to drop voltage to make up the differen …

The datasheet shows this for a reason. If you are not completely sure what it's purpose is and know that you don't need it, then you have to include it. In this case, the FET driver is intended for …

This does not look like a good idea. The problem is that both top transistors can be on for a while at switch-over. Remember that the motor make a connection too. Think of replacing the motor with …

There are several problems here: Darlingtons are a poor choice since they have relatively high voltage drop when on. At only 15 V supply, the 1 V or so across each darlington is significant. Not on …

When all you have is a hammer, you try to consider all problems nails. However, contorting all problems to the solution at hand is not always a good idea. First, you need to understand the capabilit …

You didn't say what output you are using on what PIC. You may therefore be asking this output to sink too much current. Worst case you're running the PIC from 5 V. Driving the ENA output line low p …

We can't say whether this will "work" because you haven't specified the desired operation, what controls parts like the two switches, where the tops of D2 and D3 are connected, etc. In short, this is …

What you seem to be missing is that transistors don't turn off instantly. Turn-off can often be slower than turn-on, therefore creating shoot-thru when the top and bottom transistors of a side are dr …

Another way of asking the question is whether N channel MOSFETs can be used in both high and low side switching configuration. Yes, they can. However, there will be some drawbacks using N channel fo …

You'd have to look in the datasheet and see how exactly the H bridges are implemented. If they are implemented with FETs, then they should be able to load share reasonably well. The other thing to w …

The motor coils have a significant inductive component. Very loosely and from the point of view of a circuit only (not how the physics really works), inductors can be thought of as giving inertia to …

You have two basic problems. First, the top FETs should be P channel, not N channel. That means a gate voltage below the source will turn them on. This is necessary with your drive arrangement sinc …

Your basic architecture is flawed. The circuit producing the audio output will high pass filter the signal somewhere in the path. Even in "HiFi" audio, 20 Hz can be attenuated 3 dB with gain droppin …

At minimum, you need to use a frequency so that the motor "sees" the average and doesn't react to individual pulses. That is usually a few 100 Hz. However, there are other effects that the motor doe …

That circuit is a disaster. Run away! Analyze what happens with Vcc = 12 V and both switches open. Let's say the B-E junctions of the transistors drop 700 mV. We only need to analyze what happens …