Paul GRIM
Junior Member level 1
Hi all,
I am designing a programmable inverting smps.
the output of the smps will vary between o to -10V.
i chose this circuit (two OPAMP and DAC and Vref for varying my output)
![inverter.PNG inverter.PNG](https://www.edaboard.com/data/attachments/53/53668-b8f19ef5bf846776e156a6ae14cfdd5c.jpg)
but if i use this circuit, it is necessary to have negative supply for the second OPAMP.
Is it possible to return this programmable circuit without a negative supply ?
Thank you
Paul
I am designing a programmable inverting smps.
the output of the smps will vary between o to -10V.
i chose this circuit (two OPAMP and DAC and Vref for varying my output)
![inverter.PNG inverter.PNG](https://www.edaboard.com/data/attachments/53/53668-b8f19ef5bf846776e156a6ae14cfdd5c.jpg)
but if i use this circuit, it is necessary to have negative supply for the second OPAMP.
Is it possible to return this programmable circuit without a negative supply ?
Thank you
Paul