I am not sure why you favour TMCM302
It might be a more neat solution with TMCM301
provides both the interface to TMCM035
and an interface to a computer, if needed.
As for makers of power supplies
In a laboratory almost any power supply does suffice.
But when you serialize your set, you need something serial.
I have not found any suitable enough manufacturer on the market.
So I made my own. See here:
I can recommend my power supplies. They are produced as single pieces. Can also be done serially.
No certification. But it can be done for greater orders.
I am not aware of other manufacturers of power supplies who would make analogue design, rather than PWM
with its inherent noise.
My supplies can be completely custom, with as many leads as required.
is the combination, which is even harder to come by.
takes motor voltage and converts into voltage for logics (5V). BB035
does the same. There seems to be no galvanic isolation on board.
Because a single source is used for both power circuits
anyway, there seems not a big advantage in separating them galvanically. Especially that you connect the two modules electrically.
Otherwise galvanic isolation of motors between them, and from logics would be of benefit for the sake of reliability. Failure or noise from one item would be isolated from the rest.
If maker of the boards (Trinamic) confirms that they do have optical or other galvanic isolation of powers circuits from logics, then separate power lines for logics, and each separate motor might be justified.
There still would be no need for separate power supply for each board and motor. A custom power supply can have several galvanically isolated outputs. Physical separation into separate transformers (instead of a single analogue power transformer), and filtering of each output line, would be an option in order to further decrease mutual interference over power lines. But still it would be one power supply - not several.
To be merged