All Questions
Tagged with dc-dc-converter current
92
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Periodic Voltage and Current Fluctuations in Autonomous Robot System
I have an autonomous robot system powered by a 24V LiFePO4 battery that has several distributed PCBA's getting their power from the 24V battery, and also having their own on-board DC-DC buck ...
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designing power supply using LNK306DG [closed]
I am designing a converter circuit using LNK306DG and I have done this earlier. Now I have to swap the phase and neutral pins of the circuit, and what should be the changes I have to make in this ...
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vote
1
answer
62
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Voltage drops when trying to get high current from boost converter
I have designed a Boost converter which boost 5V input to 12V output. I designed it using TPS61378 boost converter IC by Texas instruments. I was able to get around 450mA current from the output ...
- 49
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Apart from MOSFET selection what else determines max output current for LED controller IC?
TPS92691 is a LED controller, not a monolithic IC which has an integrated FET. Hence, I'm curious why the landing page for this part (https://www.ti.com/product/TPS92691) mentions that Iout(max) is 5A ...
- 407
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32
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Does current mode control for dc/dc conv imply a constant current output?
I am getting very confused, I have read articles about current mode and voltage mode control, and it seems that most converters use current mode control - which seems has two nested control loops. The ...
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70
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Forward converter current flow confusion
I am slightly confused about the flow of the current in the forward converter during the turn off time of the MOSFET (when diode on left is conducting) as shown below. Now I am considering that n1=n2=...
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134
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What is the relationship between the windings in a forward converter?
I'm trying to sketch the currents through each transformer winding of a forward converter. I also need to sketch the current through the source. I have a sketch of the current through the magnetizing ...
- 57
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83
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Reverse current into DC/DC or LDO
Suppose we have a generic scheme like this in figure, in order to protect the inputs of a microcontroller or logic gates from overvoltage essentially. For instance now we're applying 10 V at the input,...
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291
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Push-pull and flyback converter topologies dead time confusion
I am having a slight confusion regarding the flow of the currents in the push-pull and full-bridge during the dead time. Considering a
push-pull converter during the ON and dead time.
Image Link
In ...
- 669
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1
answer
73
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Power dissipation formula
Is the below formula, present on page 26 of this buck converter correct to use?
Or should I use the formula mentioned in the 3 paragraph of this accepted answer?
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53
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Arduino in the same powerline as a 12V regulator reboots when turning on the regulator
I'm building an small project where an Arduino is driving a 12V voltage regulator for turning on some devices. The devices consumption will never go up over one ampere.
The Arduino is an MKRZERO. It ...
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76
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Observing heating issues
I'm using this Boost converter.
Below is the schematic:
Layout:
The IC, inductor and diode immediately gets heated up. Any idea why?
Also, there's always a 500 mV drop on the output voltage. For 9 V ...
user220456
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1
answer
234
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What happens if the Input voltage and the output voltage are same in a boost converter?
I'd just like to know what would happen if the Input voltage and the output voltage are same in a boost converter. I have a feel that it might not work.
But would like to understand the effects that ...
user220456
0
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answer
63
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How current gets separated in multiple SW pins in buck converter?
In some high current buck converters, there are multiple SW pins for output current. How the current gets divided between them?
Example, lets consider a buck convertor has 5 SW pins and sourcing 30 A ...
- 543
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52
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Boost converter Output Voltage problem
I'm using this Boost converter in a design to boost a lithium battery (3.6V-4.1V) to 5.4V for powering a small camera peripheral that requires a typical draw of 80mA. I expect that the worse case ...
user220456