sean202
Junior Member level 2
I design a charge pump circuit similar to Dickson charge pump for my embedded flash IP.
There is one thing I can not understand so far when I test charge pump at a probe station with several continuous write commands.
If the light for scope on probe station is turn-off, there is only one and the 1st high-voltage pulse appears at the charge pump output.
While the light for scope on probe station is turn-on, all what we needed high-voltage pulses appear at the charge pump output.
I probe all related internal logic signals and find nothing wrong.
May I have your advice on what the effect of light is on charge pump circuit/layout?
There is one thing I can not understand so far when I test charge pump at a probe station with several continuous write commands.
If the light for scope on probe station is turn-off, there is only one and the 1st high-voltage pulse appears at the charge pump output.
While the light for scope on probe station is turn-on, all what we needed high-voltage pulses appear at the charge pump output.
I probe all related internal logic signals and find nothing wrong.
May I have your advice on what the effect of light is on charge pump circuit/layout?