madhu.b
Member level 3
Hello,
In my PCB I have the problem with LD0 (MC78LC00). It has maximum rating of input voltage is 12V and its delivering the 3.3V as a output voltage. So, I am giving 12V as a input voltage and I am getting 3.3V of output voltage. After some time the gate driver is born off when I am voltage testing at the gate driver, at this stage the output pin of LDO is shroted to the ground pin of LDO. I dont know what happen..
So that I moved to another PCB and I soldered LDO and microcontroller after that I checked with mulitimeter at LDO pins which are giving 0V instead of 3.3V (means shorted). Then I checked on bread board which is giving exact 3.3V. And then I slodered the LDO with fly wires on PCB which is giving 3.3V as well. And then I slodered the LDO on PCB without any wires then its giving 0V instead of 3.3V (means output pin of LDO is shorted with ground pin of LDO)...
I would say that there is nothing wrong in my PCB design....
Please give solution why its happening...
In my PCB I have the problem with LD0 (MC78LC00). It has maximum rating of input voltage is 12V and its delivering the 3.3V as a output voltage. So, I am giving 12V as a input voltage and I am getting 3.3V of output voltage. After some time the gate driver is born off when I am voltage testing at the gate driver, at this stage the output pin of LDO is shroted to the ground pin of LDO. I dont know what happen..
So that I moved to another PCB and I soldered LDO and microcontroller after that I checked with mulitimeter at LDO pins which are giving 0V instead of 3.3V (means shorted). Then I checked on bread board which is giving exact 3.3V. And then I slodered the LDO with fly wires on PCB which is giving 3.3V as well. And then I slodered the LDO on PCB without any wires then its giving 0V instead of 3.3V (means output pin of LDO is shorted with ground pin of LDO)...
I would say that there is nothing wrong in my PCB design....
Please give solution why its happening...