All Questions
14
questions
0
votes
0
answers
33
views
Current sensing in DC-DC converter
I studied DC-DC converter in peak/valley/average mode control and I have a question about the methodology to sense the current in average current mode control. I saw lot of paper about DCR sensing but ...
- 324
5
votes
2
answers
285
views
Non inverting buck boost transfer function
When considering the compensation of a non inverting buck boost (single inductor), the datasheet considers to take into account the worst transfer function between the buck transfer function and the ...
- 2,478
0
votes
2
answers
1k
views
Calculating inductor value for my buck converter [duplicate]
I'm trying to understand the SMPS operation.
The goal is to select inductor (L1) & capacitor (C1) values that satisfy the working condition below:
V1: 22-26 V range.
Power supply required: 1 A.
...
- 13
1
vote
1
answer
268
views
What is the min and max input voltage range of a buck converter to maintain efficiency above 90% [closed]
I want to design a stepdown converter from 72V lithium ion battery to 12V, 5A. I am torn between using a flyback converter and a buck converter. Which topology will give me maximum efficiency at that ...
- 103
0
votes
0
answers
469
views
Buck-Boost Converter Modeling
I wanted to perform AC analysis for a buck boost converter using SIMetrix/SIMPLIS for simulation, using this simulator the designer does not need to the average model to get the frequency response of ...
- 1,020
1
vote
0
answers
2k
views
Optimizations for LM2596, Positive and Negative Voltage
I'm working with the LM2596 to get a positive and negative voltage using two separate IC for each. I'm having trouble optimizing them for a 1 A load. I followed along with TI's WEBBENCH designer to ...
12
votes
3
answers
1k
views
Why are boost/buck converters never fully integrated/all-in-one?
Moving from small arduino applications to higher-power applications for work, I've had to switch from using simple linear regulators to switching boost/buck converters any time a different voltage to ...
- 688
0
votes
1
answer
500
views
Ramp compensation for UC1843 and UCC38C44
When we pick up the datasheets of UC1843B-SP and UCC38C44, we notice that they have the same functional block diagram, specially the PWM generator circuit (Error amplifier, current sensing PIN and the ...
- 1,020
1
vote
1
answer
83
views
Current Sensing Design
while using MCP1630 in switch mode power supply design, in the datasheet they gave the input bias current of the "current sense pin"
what are the considerations the designer should take while ...
- 1,020
2
votes
1
answer
615
views
Current sensing techniques in SMPS
I have gone through the following circuit provided by microchip technology and I get trouble in understanding the circuit circled in red the the image!!
As I understood, this circuit is used as a ...
- 1,020
1
vote
1
answer
142
views
LTC1775 Buck converter component question
I am trying to design a 12v,10A buck converter using a with LTC1775 and have gone through the calculations assuming a 40% inductor ripple current and a switching frequency of 150kHz. This gave an ...
- 15
1
vote
2
answers
156
views
Buck Converter - Ripple Current
I think I understand the buck converter operation (continuous conduction mode) except I'm a bit confused about the ripple current. Here is what I know so far
I understand everything up until the last ...
- 3,145
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
1
vote
1
answer
691
views
Is there a good topology for splitting a DC power supply from a few LM2576 and LM2577?
So, this isn't the most serious project, more of a toy/hack, but I have a some LM2576 and LM2577 and I wanted to see if I could somehow get an adjustable dual rail (bipolar) supply out of them, for ...
- 793