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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Sign conventions of inductors in circuit analysis
Here's what I know about inductors:
As per Lenz's law, inductors sort of maintain the direction of current passing through an inductor. So whenever there is an interruption on the source from which ...
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Buck Converter - Coss Loss
From: https://fscdn.rohm.com/en/products/databook/applinote/ic/power/switching_regulator/buck_converter_efficiency_app-e.pdf
Can someone explain why the high-side MOSFET causes a loss due to its C_OSS....
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Buck Converter - C_OSS charging up loss
Consider the following synchronous buck converter:
where Q1 is the high-side and Q2 the low-side
(https://fscdn.rohm.com/en/products/databook/applinote/ic/power/switching_regulator/...
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Output Stage Double LC Filter of a buck converter
I am trying to design a double LC output filter on a buck topology.
I want to set the bandwidth of my converter to be at 20 kHz. The swithing frequency would be equal to 250 kHz. The first resonnance ...
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Phase shift at half the switching frequency of a dc-dc converter
I would like to know if, regardless of the control loop used (Voltage mode control, average current mode control, peak/valley current mode control), there is always a 90-degree phase drop at FSW/2 due ...
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Drawer light circuit burns out
I made my own drawer light, but suspect I've done something wrong. After working for a few weeks (lights are only on for a few seconds per day), it stopped working.
Here's the gist of what I did:
U1 ...
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Sampling gain effect in buck converter
I recently learned that there is a phenomena called sampling gain effect in dc-dc converter and I am struggling to understand what this phenomena really is. Could someone enlighten me?
And I have seen ...
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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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How to tell if buck converter outputs are isolated? [closed]
I'm looking for a cheap CC CV buck converter with separate grounds.
How can I determine which converters have isolated outputs and how can I find such modules?
I know sites like ebay and the likes are ...
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Buck converter has low frequency ripple with high amplitude
I "designed" a simple buck converter, which is basically a clone of the 5V reference design in the TPS6293x datasheet. The converter is outputting the correct voltage on average, but has ...
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Custom buck converter putting out 1V instead of 5V
I "designed" a simple buck converter, which is basically a clone of the 5V reference design in the TPS6293x datasheet. Unfortunately, my converter is only putting about 1V (closer to 0.95V). ...
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How to make a hight power strobe light (ACL) with arduino and high power LED
I'd like to make a high power strobe anti collision light (ACL) for aviation.
The available power source is 12 - 13 V DC.
The strobe pattern should be programmable / adjustable, therefore an arduino ...
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Circuit to convert 14.8v battery with max 4a discharge current into 12v, 9v and 5v output?
I am making a robot with multiple devices mounted on top. I am planning to buy either a 14.8v or 11.1v Li-ion battery which has internal BMS limiting maximum discharge current to 4A. Now I need 9v for ...
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How to measure Buck LED driver efficiency
I've build a custom LED driver based on a DC/DC Buck converter with a current feedback loop. It works pretty well, the calculated efficiency shall be somewhere around 95%, but I'm struggling with ...
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AOZ2261 buck switching regulator doesn't give reasonable output
I am designing a brushed motor driver unit that controlled with a ln STM32F410 microcontroller and a DRV8243S H-bridge driver. I am using an AOZ2261NQI-12 to supply the H-bridge driver.
The IC is ...
