Ran a LTspice sim and this seems like it would regulate well.
With 48v in, 36 out, the upper NMOS dissipates 36W @ 3A load which is the dissipation limit of the IRF610. 3.3A is the absolute maximum ID for that NMOS at 25 degrees case temp.
It does seem wasteful to drop 12v vin-vout though, and would need pretty good heatsinking...
Do you have a particular application in mind for this regulator?
With 48v in, 36 out, the upper NMOS dissipates 36W @ 3A load which is the dissipation limit of the IRF610. 3.3A is the absolute maximum ID for that NMOS at 25 degrees case temp.
It does seem wasteful to drop 12v vin-vout though, and would need pretty good heatsinking...
Do you have a particular application in mind for this regulator?
The parameters of this adjustable regulated power supply are suitable for the voltage regulation range of 30-42v. I am used as the power supply of the front stage amplifier
If you want to do 12V voltage output, you need to adjust some parameters.
Mine uses two tubes, one cacoded wired, constant current load and a cathode follower. Uses a 6K11 and a 6FM7 and gives 220V from a 250V @75mA and has the upper grid of the cascode wired to a voltage divider from the input for best ripple reject in advance (looks directly the input irregularities). Like newer SMPS chip do.
Attachments
Please forgive me for my poor English reading ability. This power supply is used in a front-end amplifier circuit, and the load current is not more than 100mA, so it won't be very hot
Sorry, I don't quite understand what you mean. Can you draw a line on my circuit diagram for demonstration
Thank you for your reply
