All Questions
Tagged with buck switching-regulator
75
questions
1
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1
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Buck converter input voltage lower than the designed output voltage
I have this buck converter which is designed to produce an output voltage of 9V for an input range of 18V-36V.
The datasheet of the buck converter mentions that the minimum required input voltage is 4....
user220456
1
vote
1
answer
337
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Why is my buck regulator based on LM22679 limiting current way under the set limit?
I have a LM22679-ADJ based buck converter. The output voltage is set to 24V. The input voltage may vary from 28-40V DC. The current limit is set to above 5A according to the graph given in the ...
- 35
0
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0
answers
359
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Buck Converter Switching Pin and Voltage Output
By using rohm's BD9G341AEFJ-LB buck switching regulator, we want to take 5V. In datasheet BD9G341AEFJ-LB's datasheet
the example circuit given like
But we had to try circuit that is in Image-2, ...
- 55
2
votes
1
answer
54
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Should I avoid a switching frequency close to my target SPI or CAN frequency?
I have a kind of an open-ended question.
If I'm designing a board with a buck converter and have picked out my peripherals, and say for example I want to run my CAN FD interface at 1MHz baud and maybe ...
- 143
2
votes
2
answers
398
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What is wrong with my buck regulator circuit using the RY8310 IC?
A component in a larger circuit I've designed is a step-down regulator circuit. It provides an output voltage of 18V from an input of up to 29V. For no other reason than the PCB manufacturer had it ...
- 183
0
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0
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126
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How to split high current low voltage? Voltage regulators , current regulators(?)
I am using a 20v dc laptop charger that supplies 4 amps. I need 5v dc 4 amps. When I use a linear voltage regulator it’s too much current to pass through safely.. 15 amps change and 4 amps, so I use a ...
- 67
2
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2
answers
496
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Distributing the output capacitance of a buck regulator
Buck regulators often specify the value and placement of the output capacitor.
Typically 10µF placed very close to the buck regulator.
However, what would the effect be of replacing the 10µF output ...
- 786
0
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1
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85
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DC current at input and ouput capacitance of buck
I'm working on this website
http://www.onmyphd.com/?p=voltage.regulators.buck.step.down.converter
Could someone help me to understand those two statements:
1) "since the DC current of the inductor ...
- 11
1
vote
0
answers
77
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Considering the inductor in a buck DC-DC converter, how to compute the current through it?
I've been stuck for a few days to the very first point of a lab in which we analyse the behaviour of buck and boost converters. The circuit is built by the university I study in, so there is no acutal ...
1
vote
4
answers
496
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What did I do wrong with this switching voltage regulator circuit (LM2574)?
I'm new to the electronics world. I've been trying to build a switching voltage regulator circuit using the LM2574N-5G (datasheet) IC. I'm trying to switch 9V (from a 9V battery) to around 5V. I've ...
- 211
6
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3
answers
2k
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Buck Converter dies unpredictably upon connecting power
I made a PCB for an ESP32-based solenoid controller that is powered by a 24V DC Jack. I'm using an AP63205 Buck Converter to step that input down to 5V DC, and then a linear 3V3 LDO to power the ESP32....
1
vote
2
answers
875
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Using LM2596 step-down with Li-po
I'm doing a project with an ESP32 (3.3 V), a DHT11(3-5 V), a soil sensor (3.3-5 V, the cheapest Chinese), NRF24L01 (2.6-3.6 V).
I'm using LiFePO4 right now (3.32 V), but when the battery voltage drops ...
1
vote
1
answer
1k
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Step down converter design calculation
I am using a Step Down Converterto step down 3.3V to 1.8V with a Load current of 500mA.
I have an output inductor of 10uH and 1.2A rated current.
I have designed my converter with the help of this TI ...
user220456
2
votes
4
answers
529
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300VDC to 24VDC voltage converter - Cheapest implementation
In an application, 100+, 100W 24V halogen lamps need to be individually controlled and run simultaneously. They stay on for a few seconds at a time and need to have very constant irradiation.
...
- 8,096
2
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1
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1k
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Will a buck converter allow current to pass through if Vin is less than the configured output voltage?
In general, will a buck converter allow current to pass through if Vin is less than the configured output voltage?
Specifically, I'm reading the TPS54308 datasheet and I'm not seeing an answer to my ...
- 245