Questions tagged [buck]
A non-isolated DC-DC converter topology which outputs a voltage less than or equal to the input voltage.
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Capacitor self resonance in a buck converter
I'm building a 5 V regulator for a PCB, and I was reading through the datasheet and Wikipedia to make sure I was doing it right.
What baffles me is that the regulator switches at 150 kHz. ...
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Accepting a Range of Input Voltage that Straddles Operating Voltage
I want to design a system that runs at 5V and about 350mA. I want that system to accept an input voltage between 1.8V and 15V. How can I achieve that goal with a minimum component cost in my input ...
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Tapped buck converter
I am designing a board which needs 5V and 3.3V rails, at about 1.5A. If I used two buck converters, I would use a lot of board area. So, is there a way to create a multi-output buck converter? I tried ...
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SMPS PCB Design Critic
Oldest versions of this post can be viewed through this link.
This is my re-designed layout. What is your view again?
10-32V to 5V 1.2A SMPS Buck Regulator Design.
The IC is IFX91041 from infineon.
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Calculating size of cap & inductor for buck convertor
What is the idea of choosing inductor & capacitor value for buck DCDC convertors (no specific part number, in general)?
I've tried random one with low resistance, and it kinda works, but want to ...
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Inexpensive switching regulator with internal inductor & diode
I'm trying to minimize part count and cost of my project. It needs to have a 6V power rail with about 1.5A peak current from a 12V input. I'm shying away from a linear regulator because of the power ...
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Buck converter with feedback loop
According to this site in a buck converter with voltage mode control the duty cycle is set directly by comparing a voltage ramp to an error voltage. I agree with that. But this is where my headache ...
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For a small Vin-Vout difference, is it worth using an LDO vs a buck regulator?
I want to step down 5V to 3.3V at around 250mA.
As far as I see it, there are two options to consider:
Buck: more space, higher cost
LDO: less space, lower cost, more difficult to remove heat(?), ...
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Looking for a small inductor buck converter in a SOIC-8 package [closed]
I'm looking for a buck converter in a SOIC-8 package which requires a small inductor (preferably ≤10µH) which can convert 6V-16V to 5V @ 1A. Unfortunately the package must be a SOIC package, because ...
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Critique my SMPS buck design, take 2
After getting some helpful critiques from my original post;
Critique my SMPS buck design
I worked on my design and made a few major changes.
L1: 3.3uH 2A inductor
C1: 10uF 25V ceramic cap
C2: 0....
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How important is self-resonant frequency for an inductor when used in a fast (~3MHz) buck SMPS?
I'm using the LM2734Z, a 3 MHz buck regulator. It's really fast which means it has a small inductor.
One of the things I'm wondering is how important is the self-resonant frequency of the inductor? I'...
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Critique my SMPS buck design
I'm using an LM2734 buck regulator to get +3.3V at 400mA. The datasheet is unclear on how to lay out the supply, so I tried to follow some common sense, keeping all power traces short where possible. ...
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Best solution to get 3.3V from 5V-20V @ 250mA
For my Super OSD project, I need a +3.3V supply at 250mA from a variable input of 5.5V to 20V. Cost is a concern, as is size. Originally, I considered an LM317 in a SOT-223 package, due to the small ...
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