All Questions
99
questions
0
votes
1
answer
92
views
Buck converter operating frequency range:
I am looking for a buck converter IC for my project. In the data-sheet if the operating(or supporting) frequency range has not been mentioned, then how do we know about the range of frequencies it ...
- 1,885
1
vote
1
answer
927
views
Inverting buck-boost vs. positive buck-boost
Should I use an inverting buck-boost or a positive buck-boost topology?
Input voltage range = 19-22VDC,
Output voltage range = 10-56VDC,
Application = LED driver
The app not I have says the ...
- 1,097
2
votes
2
answers
669
views
Best way to power a 3.3V circuit from 3.3V-to-5.0V source
I'm working on an add-on board that needs 3.3V power (~500mA) and should take power from its host board. The host can operate at 3.3V or 5V and I'd like to avoid using jumpers that would require the ...
- 123
2
votes
2
answers
4k
views
MOSFET source to drain Current
Similar kinds of questions have been asked before it but they don't clarify how one can use this aspect in circuit.
I'm aware that a MOSFET is a bidirectional device and in one direction current can ...
- 570
4
votes
4
answers
2k
views
Combining LDOs in an effort to increase current
Is there any way to combine 2 (or more) similar LDOs with fixed output voltage so the total output current would be increased?
Buying another LDO is possible but I have a large stock of 1A LDOs and I ...
- 2,127
0
votes
3
answers
143
views
Getting closer to figuring out my battery requirements
I have been doing research for at least a week and am still a bit confused, but think I am getting to the point where I am close.
I need to power 5V 3-5A. Some days this power source will hook up to ...
- 165
4
votes
2
answers
360
views
Are Buck converters conceptually same in low/high power applications?
I am new to power supply circuits. I am studying datasheet of buck regulator LM22676 which generate 5V/3.3V dc for micro-controller supply in one of my system.The datasheet says it has a N-channel ...
- 333
2
votes
2
answers
583
views
Accepting a Range of Input Voltage that Straddles Operating Voltage
I want to design a system that runs at 5V and about 350mA. I want that system to accept an input voltage between 1.8V and 15V. How can I achieve that goal with a minimum component cost in my input ...
- 22.8k
2
votes
3
answers
464
views
Tapped buck converter
I am designing a board which needs 5V and 3.3V rails, at about 1.5A. If I used two buck converters, I would use a lot of board area. So, is there a way to create a multi-output buck converter? I tried ...
- 32k