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Results tagged with Search options user 7567

Where power is a primary concern for the design under discussion. Use the "low-power" tag when that applies.

56
votes
4answers
I am designing the power supply circuit for a system that needs several supplies, my questions are: Is it possible to replace all electrolytic caps (Mostly 100uF) by ceramic ones? What are the …
asked Oct 9 '12 by Abdella
16
votes
2answers
caused by power planes, traces and connectors should not exceed 40 mV. In my case, I found it very hard to achieve this since the distance between power source and DSP is about 8000 Mil (~ 20 cm) and …
asked Jan 22 '12 by Abdella
2
votes
1answer
I am searching for a power module that takes +15V and converts it to -15V but one important spec is the "Output Voltage Ripple" rating. I found this module from TI: PTN78000A I found that its output … ) at the output of the power module, so does this mean that the 2% written in the datasheet is for the module alone without any output filters? Also, If I want to reduce this 300mVpp to say 50mVpp, how can I design the output filter so that it can cause this reduction in ripples? …
asked Oct 31 '12 by Abdella
23
votes
3answers
If I use an isolated DC/DC converter, when designing the PCB, should I isolate the ground of the input and the ground of the output as shown below? I've never isolated grounds (except for AGND and …
asked Jul 15 '12 by Abdella
4
votes
2answers
I have only ONE voltmeter used for both measurements, sorry it's not clear in the image. "My PCB" is supplied by 64V from the shown power supply, then it's converted to 12V then to 1.2V Edit #2 … : More Notes These measurements are the same even before I soldered the rest of the board. I solder power modules first of all, even before a load exists I got these results! The "common PCB" is a one …
asked Mar 5 '12 by Abdella