So i am trying to get my head around some of the buck converter nuances.

If i have a theoretical buck converter that i setup to run at a constant PWM and a constant output voltage of say 70V

And i connect the converter to a hypothetical battery battery that is say at 50V and something less then 100% SOC .... what is the output terminal voltage of the buck converter??

Is it 70V? or is it 50V?

I imagine the converter has no choice but to clamp to the battery voltage of 50V.

If that is true some amount of current will flow into the battery and charge it up....

But how much?????????

What dictates how much current will flow into the battery? The only guess i have is...

the (regulation voltage - battery voltage )/ (battery ISR)

So in this case lets say the battery has an ISR of 1 ohm

70-50/1 = 20 amps??

Are any of these assumptions correct?

This is totally hypothetical i am just wanting to consider the ideal case here.

If i have a theoretical buck converter that i setup to run at a constant PWM and a constant output voltage of say 70V

And i connect the converter to a hypothetical battery battery that is say at 50V and something less then 100% SOC .... what is the output terminal voltage of the buck converter??

Is it 70V? or is it 50V?

I imagine the converter has no choice but to clamp to the battery voltage of 50V.

If that is true some amount of current will flow into the battery and charge it up....

But how much?????????

What dictates how much current will flow into the battery? The only guess i have is...

the (regulation voltage - battery voltage )/ (battery ISR)

So in this case lets say the battery has an ISR of 1 ohm

70-50/1 = 20 amps??

Are any of these assumptions correct?

This is totally hypothetical i am just wanting to consider the ideal case here.

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