Tagged Questions
3
votes
1answer
151 views
Are these pcb layouts good?
I'm working on an USB audio interface; the board has an analog section, with amplifiers and filters for the input and the output signals, a digital section, with the DAC, ADC, and the microcontroller ...
5
votes
3answers
191 views
Electrolytic capacitors connected with one terminal only?
I've got an ordinary PC motherboard. So, out of curiosity, I started looking at the power circuits on it and found several large 1000–1500 μF electrolytic caps:
It's easy to see that their cathodes ...
2
votes
1answer
77 views
Question about the value of Output voltage ripple mentioned in power modules datasheets
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 ...
6
votes
3answers
1k views
Should I isolate grounds of an isolated DC/DC converter?
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 ...
2
votes
2answers
334 views
How can I improve this SMPS design?
In: 21-32V
Out: 12V, 3A
Working Frequency: 300 KHz
Controller IC: FP5138 from Feeling Technology
MOSFET: IXTP44N100T from IXYS
Schottky Diode: MBR20100CT from ON Semi
The MOSFET and the diode ...
1
vote
1answer
372 views
Criticize SMPS PCB Design
Yes, it is me again with a PCB Design. I am learning a lot thanks to you. This time, the specs are;
10-32 V input
35V 4A output
Boost converter
The controller IC is LM3478.
Schematic & PCB:
...
1
vote
1answer
701 views
SMPS PCB Design Critic 3
Can you critique my design?
After finishing my 5v part, I've added the 35V part, too.
10-32V to 5V 1.2A SMPS Buck Regulator, the IC is IFX91041 from Infineon.
10-32V to 35V 4A SMPS Boost ...
1
vote
1answer
340 views
SMPS PCB Design Critic 2
Thanks for your patient help, I am learning a lot. This is my (final, I hope) re-designed layout. What do you think?
10-32V to 5V 1.2A SMPS Buck Regulator Design.
The IC is IFX91041 from infineon.
...
