PIC interface with regulator..?

[syntium87]

hi..i have this problem..
i'm using the pic16f877a to send signal to a regulator IC so that i can boost up from +5V to +12V,these voltage is used for a series of switch..

then after i pressed one of the switch...the 12 V is step-down back to 5V..and send the signal back to the PIC..

my question is..do we have these type of regulator/converter?? i mean operated in 1 way or 1 line only(5V -> 12V -> 5V) which we can programme or somethg ??is it possible to do that?? and how to interface these thing together(pic + regulator) ?please help me...

[yonghui]

i think u can find some boost converter circuit online.
pulse generated from PIC goes to MOSFET or IGBT for boosting circuit.


regards,
yh

[syntium87]

huhu..can it be interface on single line to use input & output together???
plz help me..

[sich]

can it be interface on single line to use input & output together???

Not really understand your question. What the purspose of doing so? Ur application is?

[syntium87]

what i mean is can a feedback signal being sent back to the pic?

[yonghui]

u can use a voltage divider on the converter output, feedback the analog voltage from the voltage divider of the output into the A/D converter of the PIC to read the voltage.