All Questions
16
questions
4
votes
4
answers
573
views
Inductor energy storing in buck converter
I am trying to understand inductor energy storing during ON time in buck converter.
Energy stored in inductor of buck converter is (Input Power -Output Power)*Ton
Lets say output power is 5 W and ...
- 119
0
votes
0
answers
59
views
Reduce voltage ripple in wall power supply and buck converters
For my project I choose a wall AC/DC power supply (AEJ160PS12) with output voltage at 12V and intend to use some buck converters to step down from 12V to 6V and 3.3V. The chosed buck converters is ...
- 29
0
votes
0
answers
31
views
PMIC MIC23451 operating voltage range
I am using Microchip SOM module in my project. Not using all the things in the SOM.
So we are redesigning the board with necessary components for my application.
Below is block diagram shows the main ...
- 2,593
0
votes
0
answers
58
views
Using 2 LiPo Batteries via 2 Buck Converters for External Notebook Power Supply - will it work?
I have an old ThinkPad X220T notebook of which the internal battery is broken (and removed).
To get my notebook working on the go again I want to build an external portable power supply with 2 LiPo ...
1
vote
1
answer
152
views
DC-DC converter circuit LM5164
I would like to build a DC-DC converter circuit using EasyEDA that can output about 80V from 7 Nissan Leaf battery modules that are about 55V nominal.
I am looking at the datasheet for the LM5164 and ...
- 339
2
votes
1
answer
280
views
5V and 12V derived from a regulated 12V supply? Buck converter for 5V, in parallel with 12V load?
Apologies up front — this is super basic, but I’m sleep deprived and on a deadline for a personal project.
This is all DC. I have a 12 V input (via a wall-wart). I need 5 V to power some electronics (...
- 132
0
votes
1
answer
86
views
Buck converter: Additional circuitry working not clear
Saw the below schematic of a buck converter, but not able to figure out the working of the marked section. It is shown Node 1 is at 16 V.
Looks like sensing the differential voltage across inductor, ...
- 3,032
2
votes
0
answers
95
views
Is it true that power supply design is difficult when input voltage range is wider?
During power supply (buck converter) testing, I had seen the lowest efficiency values corresponding to highest input voltage. I thought if the design meets this worst case scenario, it should be ok no ...
- 3,032
2
votes
3
answers
164
views
Buck Converter Theory Confusion
For a buck converter, I'm having a hard time conceptually understanding what is happening.
Here's my thought process: When the switch is closed, their is a positive voltage across the inductor equal ...
- 393
-1
votes
1
answer
104
views
Understanding Buck Converters [closed]
I need a little help designing a buck converter. Basically I want to generate a 5V output that will stay the same regardless of load resistance and that will exist when the input varies between 12 and ...
- 1
1
vote
2
answers
324
views
Do I need to include overhead when picking a power supply?
I need to power 40 Raspberry Pis, each requiring a 5V input and have a maximum current draw is 2.5A.
This would mean:
5 x 2.5 = 12.5W
12.5W x 40 = 500W
That I ...
- 408
0
votes
2
answers
302
views
How to create a high power buck converter power supply? [closed]
I am building a device that requires a lot of energy at its peak, about 30W.
The kind of supply I want to build looks like this:
I understand that this is made of a controller which switches a ...
- 360
0
votes
4
answers
246
views
Best option from 30–60V to 3V3
I need to take power from ebike's battery (30–60VDC) for a datalogger (3V3) based on STM32 with almost no consumption.
My question is what is the most efective conversion from 60V to 3v3?
Is it good ...
- 15
1
vote
1
answer
1k
views
Creating a DC input ATX power supply using buck converter
I am working on a project which requires me to use a battery to run a computer. I planned to work with a 24V battery connected to a DC input (24V,1000W) ATX power supply and connect it to the PC. But ...
- 11
2
votes
3
answers
301
views
Why do some switching regulator ICs have single VCC pin but multiple PGND pins?
This is a follow up question to Reason of multiple GND and VCC on an IC
I found a switching regulator IC (buck) that has multiple PGND pins and one analog ground (AGND). It has only one VCC pin.
(...
- 3,032