??? 02/07/10 18:54 Read: times |
#172959 - voltage regulator design |
I had an interesting project to design a voltage regulator with the following specs:
Input + 12VDC battery. Outputs: -5VDC, +3.3VDC, +5VDC non isolated. Total Current drawn from battery is 330mA. Trying to simplify the design I came out with this idea: The problem with this design is that the voltage between 3.3v and 0v is not regulated until current drawn between the 0v and -5vd is greater then the current drawn from 3.3v and 0v. Do you know how to fix this problem or do you have other ideas? Mahmood |