All Questions
Tagged with buck buck-boost
41
questions
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
7
votes
3
answers
801
views
What technical progress enabled high-efficiency charge pumps?
I found a lot of information on the internet, most of which told me that charge pumps are only suitable for low-power scenarios and they are not very efficient.
Charging ICs based on the charge pump ...
- 73
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
5
votes
2
answers
2k
views
Idea behind current mode control in DC-DC converter
I am learning about control strategies for DC-DC converters.
While I find voltage mode control easy to understand, I struggle to understand
current mode control.
Is the idea here to control the ...
- 67
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
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
3
votes
6
answers
1k
views
What is an intuitive explanation on how a buck and boost converter transfer energy?
I can understand how a buck converter can step down the voltage but only with the formulas. I am struggling to understand intuitively how the inductor stores energy and releases it in a way so that ...
- 31
3
votes
2
answers
199
views
One step-down regulator 24 V to 1V or two step-down regulators with lower steps?
I am trying to design a working principle scheme to step-down the input voltage from 24Vdc ---> different low voltages (1.8 V, 1 V, 1.5 V, 3.3 V with ripples ~ 1%).
Could you kindly explain me the ...
- 59
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
2
votes
1
answer
322
views
Identification of IC used in Pololu 5V, 5A Buck Converter (my2101 330)
I have identified the chip on the Pololu 5V, 5A buck converter as my2101 330, but I am having difficulty finding information about this chip on any platform. I've checked the Pololu resources page (...
- 903
2
votes
1
answer
2k
views
Why overshoot happens in Inductor voltage in an open loop DC-DC buck converter?
I am extremely confused about why this overshoot occurs in the Inductor voltage waveform in buck converter and also why the time to achieve steady state reduces on increasing the load resistance.
...
- 23
2
votes
1
answer
581
views
Buck-Boost Converter Inductor Value
I am designing a typical buck-boost converter using the LTC3530EMS#PBF IC from Analog Devices.
My design specs are as follows:
Vin: 3.0V - 4.2V
Vout: 3.3V
Iout(max): 300mA
Fsw: 1MHz
In the datasheet, ...
- 868
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
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
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