Hi,
I am trying to make a single variable input dc-dc converter with multiple outputs(Buck-Boost). I have succeeded in making single output dc-dc converter(Buck). In which Voltage is stablized or regulated by means of closed loop feedback system (Simple P-Control is implemented). In which a micro-controller is used to take feedback voltages from load, converts it into digital signal through ADC, and this ADC value changes the duty cycle of PWM which is feeded to MOSfET, MOSfet driver IC (IR2110) is used to drive the mosfet. The more the duty cycle, the more the output voltages. A reference voltage is set to maintain the output voltage at some certain level, if the load varies, then ADC value will also change according to it and thus by increasing or decreasing the dutycycle of PWM, the voltage is again maintained or regulated to the reference value. Note that, I made Asyncronous BUCK, so that only one MOSfet is used as a High-Side Switch. There is no problem in this circuit.
But I want to make a multiple output DC-DC converter. What should I do? If I make similar circuit and only changes the reference value of duty cycle of PWM and then applied to the other one MOSfet driver, and the input is taken from the same power rail, will it work? Please Guide me.
Thanks
(The working Circuit of Single Output DC-DC converter Buck is attached).
I am trying to make a single variable input dc-dc converter with multiple outputs(Buck-Boost). I have succeeded in making single output dc-dc converter(Buck). In which Voltage is stablized or regulated by means of closed loop feedback system (Simple P-Control is implemented). In which a micro-controller is used to take feedback voltages from load, converts it into digital signal through ADC, and this ADC value changes the duty cycle of PWM which is feeded to MOSfET, MOSfet driver IC (IR2110) is used to drive the mosfet. The more the duty cycle, the more the output voltages. A reference voltage is set to maintain the output voltage at some certain level, if the load varies, then ADC value will also change according to it and thus by increasing or decreasing the dutycycle of PWM, the voltage is again maintained or regulated to the reference value. Note that, I made Asyncronous BUCK, so that only one MOSfet is used as a High-Side Switch. There is no problem in this circuit.
But I want to make a multiple output DC-DC converter. What should I do? If I make similar circuit and only changes the reference value of duty cycle of PWM and then applied to the other one MOSfet driver, and the input is taken from the same power rail, will it work? Please Guide me.
Thanks
(The working Circuit of Single Output DC-DC converter Buck is attached).
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