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by londons_explore 926 days ago
Most MOSFETS are 50 volt rated. 50 volts is a sweet spot for switching the most powerful load with the smallest and cheapest switch.
1 comments
KaiserPro 926 days ago
if you're switching 48v, you'd want a mosfet rated for way more than 50v. On a car you'd want 200% headroom at least.
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londons_explore 925 days ago
With totally uncontrolled bus capacitance and inductance, sure.

But when you're using the same bus for Comms you need to have control of high frequency spikes, and low frequency spikes are easily handled by a bidirectional DC/DC. Therefore I could imagine peak to peak ripple on this bus to never exceed 1 volt.

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KaiserPro 925 days ago
> Therefore I could imagine peak to peak ripple on this bus to never exceed 1 volt.

https://www.quanterion.com/wp-content/uploads/2014/09/MIL-HD... disagrees.

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