All Questions
Tagged with buck buck-boost
41
questions
1
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0
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76
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Buck boost converter inductor rating
I am designing a buck boost converter with a 12v output, and 50A current output.
The input range is 8v-14v from a supercapacitor. However based on the Texas Instrument buck boost design sheet Basic ...
- 11
0
votes
0
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134
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on/off pin problems with the LM2678 5.0
PCB:
My name is Ertuğrul. I made a regulation board with an LM2678 but I have a problem: I provide 12V input but I can not get 5V output.
I only get 5V with the on/off pin enabled, but the datasheet ...
1
vote
1
answer
259
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Is there a mathematical representation that represents the output voltage of a buck or boost converter in discontinuous mode?
Recently I have learned that in buck or boost converters, the output voltage depends only on the duty cycle and input voltage in continuous conduction mode or when current is continuous. However, in ...
- 469
0
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2
answers
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How does a boost converter allow for a gain in output voltage by just switching the positions of the inductor and switch?
I get that in a buck converter, a low pass LC circuit was attached and this effectively filters out high frequencies. If the bandwidth is configured so that it is lower than the switching frequency, a ...
- 469
2
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1
answer
2k
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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
0
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0
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108
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Buck converter with current and voltage regulators
I need to find scheme for Buck converter with adjustable output voltage from 0 up to 12V. Also it may have an adjustable current limit. Max current output is 10A or at least 5A. Actually I will need ...
- 1
0
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0
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469
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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
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0
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2k
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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 ...
0
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2
answers
183
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Through hole buck-boost ic [closed]
I'm looking to create my own buck-boost converter but want to test it on a breadboard. I have done online searches but only surface mounted ICs show up. The Texas instruments TPS63061 looks ideal for ...
- 1
3
votes
2
answers
199
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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
12
votes
3
answers
1k
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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
1
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2
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365
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PWM-Switch Model of a Cascaded-Buck-Boost
Im trying to develop the PWM-Switch Model of a Cascaded-Buck-Boost.
First of all i want to extract the Large-Signal Transfer function for the Buck-Mode.
I'm working through the book "Switch-Mode ...
- 165
1
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0
answers
74
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Modelling DC/DC-Converter
i want to model a cascaded Buck/Boost-Converter with FAST like mentioned here: https://cbasso.pagesperso-orange.fr/Downloads/PPTs/Chris%20Basso%20APEC%20seminar%202013.pdf.
The goal is to implement a ...
- 165
0
votes
1
answer
745
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State-space model of a buck converter in DCM
I have a problem getting the state-space representation of a buck converter in DCM.
There are two switch cycles between one period.
If the switch is closed the circuit looks like this:
After ...
- 165
0
votes
1
answer
500
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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 ...
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