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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Extending a switch mode power supply controller IC to work under higher input voltages
I have a AP6502 IC, which is a cheap DC-DC buck converter. It converts a DC voltage in the level of 4.7V-18V to a DC voltage of 0.925V-16V. I works under 2A current maximum.
Example Usage of AP6502 ...
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Role of Capacitor when switch is open in Buck Converter?
in a buck converter, initially, when switch is closed, then capacitor charges and stores energy. But when the switch is opened, then Inductor current flows through thr free wheeling diode, but what ...
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LC Low Pass FIlter in Buck Converter
Hi In this circuit below:
What role is the LC Low Pass filter playing?
The switch is switching ON-OFF alternatively, at a frequency which determines the Duty cycle, and we get an average output at ...
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Step-Down DC-DC converter question
I want to use Power over Ethernet (48V, 30W best case) to power something that's going to require up to 15W at 10V. That means I need to step down the PoE voltage but step UP the max current. As I ...
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Buck converter operation
I have been reading about the buck converter and have also referred to the various online resources like here.
In the above circuit, as I understand, when the switch closes, current starts to ...
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Step down switching regulator heating up with light loads
I built a step down switching regulator based on a Diodes AP5100 using the datasheet example circuit with this layout. The voltage is being stepped down from 15V to 12V and the AP5100 is heating up ...
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Is this a bidirectional buck/boost converter
I found this interesting IC on Linear Technologies site, but I don't understand if it, or its development board, can both boost input voltage to output and buck output voltage back to input.
http://...
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Buck regulator frequency requirements (transient response)
Looking at the frequency choices for buck regulators, is there a defined "good" range for a particular context?
Looking at datasheets, manufacturers extoll the virtues of "better transient response". ...
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Convert 320VDC to 220VAC or 48VDC voltage using 220VAC (UK) UPS?
I've got access to 12 flexible Solar Panels - 320VDC each
Main voltage is 220VAC (here in the UK) and also might buy an electric engine running at 48VDC.
Would a 220VAC Uninterruptable Power Supply ...
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Can a synchronous regulator "chirp" in burst mode?
I'm looking at (the millions of) buck regulators available for a project where the board will be a host board for a Gumstix Dual Cortex A9. This can pull quite a bit of current at maximum so I was ...
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Switching regulator layout advice
I am planning to use a Diodes AP5100 switching regulator to go from ~22V to 12V in my circuit, which will have a max current draw of about 1A. This is my first attempt at laying out a switching power ...
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12V -> 3.3V DC step down at low current
For a project that I've been working on, I want to drive a couple of ICs and several LEDs from an ~12V supply (lead-acid battery). I think the whole thing should draw about 100mA, so I didn't really ...
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Routing a buck/boost DC/DC converter
I need some help with the layout of a power supply. I botched the first two iterations as I do not have the necessary experience, and I would like to avoid another costly run.
For the sake of ...
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Noise problem with buck/boost switching regulator
I am designing a electrical device for a research project (I'm a PhD student, but unfortunately not EE!). More info on the device can be found at http://iridia.ulb.ac.be/supp/IridiaSupp2012-002/
The ...
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Driving LEDs with Specific drivers or buck/boost regulation
I have a circuit that is driving 3 x LED rings and an Arduino/ATmega @ 5v through a standard 5v regulator.
Each LED ring draws 11v @ 300mA and is PwM switched using a 2n7000 Mosfet from the ATmega's ...
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