All Questions
Tagged with buck buck-boost
41
questions
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
1
vote
0
answers
81
views
Placing Input capacitor of boost after output capacitor
I have a battery charger for 12V input with integrated buck that charges a single cell (3.7V nominal). The charger also has a power path and I would like to place a boost converter to boost the 3.7V ...
- 261
4
votes
1
answer
1k
views
DC-DC Converter - Why is the input voltage called Vg?
In the textbook I'm reading (Fundamentals of Power Electronics 2nd Ed, Erickson and Maksimovic), the input voltage for several different types of converter circuits is labeled Vg. The textbook gives ...
- 98
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
3
votes
1
answer
187
views
How does the coupled inductor, capacitor and diode combination work?
I was reviewing a buck regulator circuit. Circuit was designed for 3.3 V output (Vout1)
simulate this circuit – Schematic created using CircuitLab
From this buck regulator output, a coupled ...
- 897
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
1
vote
0
answers
66
views
Stable 12V 1.5A
I'm in need of a stable 12V 1.5A power which I could carry with myself.
One way of doing it would be to strap, say, 12x 1.2V rechargeable batteries and use LM317. But then I read about buck ...
- 133
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
7
votes
1
answer
1k
views
Is it possible to get a high efficiency buck-boost converter by switching between the two?
Many buck-boost converters work by boosting to an intermediate voltage, then bucking to the desired voltage. What if instead, it had a separate buck and boost section in parallel, and switched between ...
- 1,181
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