All Questions
Tagged with buck switching-regulator
10
questions
16
votes
4
answers
19k
views
Low side N-Mosfet buck converter
I often see schematics of basic buck converters. The majority of these schematics use a P-MOSFET as high side switch.
Why is this design preferred over a low side, N-MOSFET buck converter?
simulate ...
- 1,025
6
votes
3
answers
2k
views
Buck Converter dies unpredictably upon connecting power
I made a PCB for an ESP32-based solenoid controller that is powered by a 24V DC Jack. I'm using an AP63205 Buck Converter to step that input down to 5V DC, and then a linear 3V3 LDO to power the ESP32....
1
vote
1
answer
1k
views
DC-DC buck regulator MP2359 sometimes damaged when input voltage is high
I use MP2359 (datasheet pdf) to convert high voltage into 3.3V. The input range of voltage is from 4.5V to 24V.
At low input voltages, things seem to be OK. However when I input a voltage of 21V (...
- 475
8
votes
2
answers
9k
views
How to control a buck-boost converter circuit from a microcontroller?
I'm reading about buck-boost DC-DC converters lately and one thing is still not very clear for me. Most of the converter ICs that I've seen have a feedback loop input pin. For example LTC3780 requires ...
- 236
6
votes
3
answers
1k
views
Configuration of Multiple Buck Regulators on One PCB
I have been doing a lot of switching regulator research for a board design that uses two buck regulators on the PCB to get 9V and 3.3V out from a 12-28V DC supply. The majority of my questions have ...
- 337
2
votes
2
answers
113
views
Is the PCB routing for this LM5143A-Q1-based buck converter right?
Thanks to your advice on StackExchange, I'm in the final stage of developing my first LM5143A-Q1-based (link to datasheet) buck converter! It may be a bit rushed as I need to prepare this for a high ...
- 411
2
votes
1
answer
1k
views
Will a buck converter allow current to pass through if Vin is less than the configured output voltage?
In general, will a buck converter allow current to pass through if Vin is less than the configured output voltage?
Specifically, I'm reading the TPS54308 datasheet and I'm not seeing an answer to my ...
- 245
2
votes
3
answers
4k
views
How to achieve the max efficiency from a Buck converter
I have a question about switching step-down regulators.
(As I stated in my previous questions, please consider the fact that that I'm not very expert, so feel free to reply/talk as if I were a student....
- 205
2
votes
2
answers
719
views
Efficiency Curve of Buck Regulator
Below is the efficiency curve for the TI TPS53513(datasheet). Can someone explain what causes this characteristic efficiency curve? It seems to be similar to the one for other regulators as well. Why ...
- 4,669
1
vote
0
answers
99
views
Input filter for switching regulator
I'm trying to create an input filter for a switching regulator for automotive application.
My aim is to make a supply board, where from 24V come out 12V (from the buck) then 10V and 5V (from two LDOs)....
- 61