All Questions
63
questions
1
vote
2
answers
157
views
Modifying a buck converter for lower current rating
I have been learning about buck converters and I think I understand the principle of their design. However, I am unsure of how a current rating would be calculated for a particular design.
The ...
- 13
0
votes
1
answer
494
views
How to increase current output of capacitor bank with buck booster?
I'm pretty novice when it comes to electronics given that my background is in mechanical engineering. But I am trying to design a circuit that can take a 5V (almost 0A current) to charge a capacitor ...
- 11
0
votes
2
answers
328
views
Current relationships across a voltage step down convertor
This question arose from a conversation over the weekend and we tied ourselves in knots trying to get to the bottom of it. I didn’t have time to put a simple circuit together so it would be great to ...
- 105
4
votes
1
answer
3k
views
How does this current limiter work? - and why doesn't it?
I have a generic Ebay DC-DC buck converter, and the current limiting circuit is not working. I find that such devices often suffer from this issue, so I figured I'd reverse-engineer it in hopes of ...
- 1,465
0
votes
5
answers
869
views
Can the output current of a buck converter be more than the input current?
I want to power a bulb from solar panel (17 V, 0.9 A) but due to low resistance (2 Ω) of the load I have to reduce the input voltage to 5.5 V @ 2.75 A for maximum power.
I am using a generic buck ...
- 646
0
votes
2
answers
378
views
Buck Converter not increasing the current?
I am constructing a 20 W buck converter. The voltage is bucking but the current is not, the current that the power supply is producing is going straight through to the load. Please help.
I am suppose ...
0
votes
3
answers
264
views
Current consumption of devices [duplicate]
I want to use boost converter to to supply higher voltage to LED .I have confusion about which smps power supply to use on input side.
From specs. I am unable to understand why input current ...
- 1
2
votes
1
answer
2k
views
What is a valley current in a regulator?
Can someone explain what is a valley current in a regulator?
- 53
0
votes
0
answers
644
views
Design LNK302 with external current boost
I want to use the LNK302, which can work as buck converter. Of course it does not operates similar to buck converters like MC34063 but I tried in many ways to boost the current on the LNK302 with a ...
- 140
0
votes
1
answer
569
views
12v to 5v buck converter to power rasberry pi on parallel circuit [duplicate]
Main question: will oversupplying current to a raspberry pi damage it? For example, will providing 5a at 5v be damaging when the pi requires only (up to) 2.5a at 5v?
Here is my backstory, assumptions,...
- 3
-1
votes
3
answers
3k
views
Buck converter efficiency and output current vs. input current [closed]
When I am using a buck, is the imput current lower than the output curent? Also how would I aljust that on a buck
- 37
4
votes
2
answers
824
views
Can overshoot current from DC/DC converter damage LED lamp?
I'm building buck converter to drive led lamps. It consists of microcontroller, PWM generator, buck-circuit and current sensor. Microcontroller knows what target current should be and sets duty cycle ...
- 395
1
vote
1
answer
603
views
Remove the load of buck converter
I have a buck converter that is delivering 6A to a load of 3ohm load.
I'm measuring the output current and stop increasing the dutty cicle when the current reach 6A, at this moment the output voltage ...
1
vote
2
answers
1k
views
Current step to LC circuit
An inductor is a device which adjusts its voltage to keep the same current flowing through. However, the current exponentially decays when there is no source any more. Similarly, a capacitor is a ...
- 345
0
votes
1
answer
127
views
Power Supply for IC
I am thinking about utilizing a step-down regulator chip for a synchronous buck converter. I figured a basic laptop power supply would work for this (fit some connectors on it). I have done the ...
- 33