Hello,
I need to supply DC voltages to an electrical device. These voltages are 4V, 2.5 and 1.2V as well as -4V, -2.5V and -1,2V, positive or negative controlled by a MCU.
It is not a motor so I do not have the problems that come with EMF, diodes etc..The voltage creation is taken care by voltage regulators so everything is ok.
Max current drawn by the device is around 15mA.
The problem I have is in the voltage inversion circuit.
I was thinking about a mosfet H bridge, which is notoriously able to supply voltages in 2 directions.
The MCU output is 5V, 20mA max so I am not sure which kind of design I should use, seen the limited voltages/currents involved. Also the circuit should be the tiniest possible.
Can anyone please help?
Thank you
I need to supply DC voltages to an electrical device. These voltages are 4V, 2.5 and 1.2V as well as -4V, -2.5V and -1,2V, positive or negative controlled by a MCU.
It is not a motor so I do not have the problems that come with EMF, diodes etc..The voltage creation is taken care by voltage regulators so everything is ok.
Max current drawn by the device is around 15mA.
The problem I have is in the voltage inversion circuit.
I was thinking about a mosfet H bridge, which is notoriously able to supply voltages in 2 directions.
The MCU output is 5V, 20mA max so I am not sure which kind of design I should use, seen the limited voltages/currents involved. Also the circuit should be the tiniest possible.
Can anyone please help?
Thank you
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