All Questions
Tagged with buck-boost voltage-regulator
24
questions
1
vote
1
answer
71
views
Using Buck-Boost as LED driver
I am trying to use a buck-boost controller like LT8390 as a LED driver. This controller can act as a current controller if the current through sensing resistor connected to (ISP/ISN) can be adjusted. ...
- 524
1
vote
1
answer
310
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How to get a stable 3.3V/2A output out of a single cell (18650 Li-ion) battery?
In my tiny quadcopter, I need to power a long range wifi card which take 3.3V/2A max as input. The quad runs off a single high current 18650 Li-ion battery.
Are there any chips or modules that will ...
- 337
1
vote
1
answer
30
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Li-Ion Battery Array: V.out ≥ 3.5 [V], I.out ≤ 1 [A] : No voltage regulation? Boost? BuckBoost? SeriesxParallel — 1x4? 2x2?
With a lithium ion cell array as follows:
n.cell = 4.0 [-]
V.cell.max = 4.2 [V]
...
- 437
0
votes
1
answer
212
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54 V to 5 V using LM2576HV
I have a requirement to convert 54 V battery output to 5 V. My battery's positive terminal is grounded. I tried the connection as mentioned in the datasheet which is attached here, but as soon as I ...
- 133
0
votes
1
answer
638
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Boost converter vs. voltage regulator
I am trying to make a thermo-electric generator for a school project, and I need a voltage regulator to keep the USBA output at a constant 5 V. However, I have some step-up boost converter modules at ...
1
vote
1
answer
72
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9 V to 12 V step-up converter to drive load between 10-100 mA, and no load
I'm working on stepping up the voltage from a 9 V, 150 mA power supply to 12 V, with a load of 10-100 mA and moments where there's no load.
I have implemented something similar with this IC ...
- 185
0
votes
0
answers
66
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How to slowly store higher voltage from low power source?
I want to use a small solar panel (about 1V 15mA in ambient light) and then boost its voltage to 6V to slowly charge a 6V battery or capacitor. I have experimented with some generic boost converters, ...
- 153
0
votes
1
answer
600
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Can I drive LEDs directly with an LM2596 DC to DC converter? [duplicate]
I'm aware that LEDs need to have their current limited and cannot be connected directly to an unregulated power supply or they will 'blow'. However, can I use a LM2596 DC to DC converter to drive ...
- 111
1
vote
0
answers
153
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Lm311 as open loop controller for boost converter
Recently I’ve wanted to make a boost converter. To keep the output voltage stable when a load is connected there need to be a feedback from the output. The circuit above claim that it will keep the ...
- 81
0
votes
2
answers
69
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Problems with LiPo Volt buck boost for a LED
I need a little bit of help in understanding buck-boost converter.
I have 4 LiPo 18650 batteries in series an BMS to charge and discharge the batteries properly.
After that I added the buck-boost ...
- 1
0
votes
3
answers
203
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Design own Buck-Boost converter - Some questions
For a project of mine I would like to design my own buck-boost converter because the fixed solutions are more expensive and a bit to big for my preferences.
Vin is 12VDC - 24VDC regulated to 12VDC ...
- 311
0
votes
0
answers
114
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LTC3115 Buck-Boost Converter isn`t able to provide specified current
Currently I am designing a regulator circuit based on an LTC3115-1 Buck-Boost regulator which should be able to supply a current of 1.5 A for charging a NiMH battery pack with 18 cells (18...28 V).
As ...
- 19
0
votes
1
answer
214
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I have a 5 volt converter but I also need 3.3 volts, what should I do?
Goal is to get 5V and 3.3 V output by the use of a buck/boost converter. Important is to use a converter instead of an LDO for heat reasons.
I want to draw minimum above 0.8A, preferably 1-1.2A at the ...
- 101
0
votes
0
answers
101
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Dutycycle DCDC control
I will start with that, i already ask for this question in other topic but i didn't have any anwser about my question link.
Please don't go too far in explaning difficult thing not realated with my ...
- 11
1
vote
2
answers
371
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Voltage Mode Control
Since i started my training about design of DCDC I'm really confuse with control part.
At school i learned that DutyDycle=Vout/Vin for Buck, and that's it.
But now, i see that, Duty cycle is set ...
- 11