Need s little help here:
I have two circuits referenced to the same common.
One is output 16V 30mA fixed from TPS61040.
Second is variable 0-10V output from LM358.
Both connected to the same terminal but only one is active at any time controlled by a Microcontroller.
I want to use two N-channel MOSFET transistors to control them.
The issue is that MOSFET has internal Zener that feeds inactive power source back from the active circuit.
I can add a diode for 16V line, but I can't have any voltage drop in 0-10V circuit.
I am thinking to use two N-MOSFETs in opposite directions but this is not clean solution IMO
Any ideas how can I correct it?
I have two circuits referenced to the same common.
One is output 16V 30mA fixed from TPS61040.
Second is variable 0-10V output from LM358.
Both connected to the same terminal but only one is active at any time controlled by a Microcontroller.
I want to use two N-channel MOSFET transistors to control them.
The issue is that MOSFET has internal Zener that feeds inactive power source back from the active circuit.
I can add a diode for 16V line, but I can't have any voltage drop in 0-10V circuit.
I am thinking to use two N-MOSFETs in opposite directions but this is not clean solution IMO
Any ideas how can I correct it?
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