Hi,
I am designing an analog boost converter controlled by microcontroller now and I have a problem with the output voltage.
requirements:
Input voltage = 0-15 V
Output voltage = 48 V
Output current = 6.25 A
I am using:
L = 35uH
C = 60uF
When I applied input voltage in the range from 8.5 V - 15 V, I got an ouput of 48 V and 6.25 A by changing the dutycycle ( D )
But when I applied input voltage below 8.5 V, I got below 33 V even I tried a fast dutycycle ( 89% )
I do not know exactly what is happening. I need some help for this....
I am designing an analog boost converter controlled by microcontroller now and I have a problem with the output voltage.
requirements:
Input voltage = 0-15 V
Output voltage = 48 V
Output current = 6.25 A
I am using:
L = 35uH
C = 60uF
When I applied input voltage in the range from 8.5 V - 15 V, I got an ouput of 48 V and 6.25 A by changing the dutycycle ( D )
But when I applied input voltage below 8.5 V, I got below 33 V even I tried a fast dutycycle ( 89% )
I do not know exactly what is happening. I need some help for this....