All Questions
Tagged with buck power-supply
39
questions with no upvoted or accepted answers
2
votes
0
answers
95
views
Is it true that power supply design is difficult when input voltage range is wider?
During power supply (buck converter) testing, I had seen the lowest efficiency values corresponding to highest input voltage. I thought if the design meets this worst case scenario, it should be ok no ...
- 3,032
2
votes
0
answers
243
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EMI Filter For Low Power SMPS
I've designed a 1.25W buck converter which is fed by 220VAC(85-265) and has a 5V output. Now I'm trying to design a EMI input filter for it. I don't have a PE connection so I didn't use a CM filter so ...
- 319
2
votes
0
answers
899
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Advanced ATX Power Supply Modifications
I know there are multiple tutorials and questions regarding converting an ATX power supply, new or old, to a benchtop power supply for projects. I'm fully aware of how to make the basic conversion to ...
- 231
1
vote
0
answers
105
views
The best way to step down 12V to 5V with at least 10A current from a PS3 power supply for a WS2812B LED strip
I am new to electronics. I had a PS3 Super Slim power supply lying around, which outputs 12V up to 13 amps. Recently, I bought a 5-meter strip of WS2812B LED strip, which needs 5V, and the recommended ...
1
vote
1
answer
150
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DC-DC converter circuit LM5164
I would like to build a DC-DC converter circuit using EasyEDA that can output about 80V from 7 Nissan Leaf battery modules that are about 55V nominal.
I am looking at the datasheet for the LM5164 and ...
- 339
1
vote
0
answers
78
views
What voltage regulator is used for PoE Splitter and Switches?
What is the working principle / hardware that is used for common PoE switches or PoE splitters. Please see following hardware examples:
TP-Link PoE Switch
RPI PoE Splitter
I am asking this question ...
- 377
1
vote
0
answers
390
views
Reverse recovery body diode in synchronous buck converter
I am building a synchronous buck converter from 72 V to 4.2 V 2 A. Is there a way to lower the losses of the lowside MOSFET’s body diode? I am using a switching frequency of 300 kHz and with the ...
- 103
1
vote
0
answers
238
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PCM CCM Converter using SIMetrix/SIMPLIS
I have built the attached file which is a peak current mode buck converter on SIMetrix/SIMPLIS software but I cannot simulate due to some errors that I could not troubleshoot. Please can anyone ...
- 1,020
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
0
answers
104
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12VDC Switching to 17VDC high amerage
It's been years since my undergrad work as an EE. I am a physicist and medical researcher now, but, as a startup, we all take on anything we can.
Let's face it... 12VDC high current PSU's are cheap. ...
- 31
1
vote
0
answers
164
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1V Overshoot and Undershoot on Power Rails of LTE Module
I have designed a PCB (four layer) having SIM7600I LTE Module. The Stackup is:
Signal & Component Layer with Ground Pour
Internal Ground Power Plane
Internal ...
- 962
1
vote
1
answer
73
views
Buck converter discontinous mode
I am operating the buck converter with STmicroelectronics VIPER01 IC to step down the input voltage of 200 volts to 6 volts in continous current mode 300 mA load current. The operating frequency is ...
- 328
0
votes
0
answers
23
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Buck Average Modelling
I completed average modelling with Voreperian PWM switch model as described in Christophe Basso's book "Transfer Function of Switching Converters" and I compared the average model with ...
- 119
0
votes
0
answers
35
views
Debugging buck converter IC having trouble reaching stable power good after short
I have a 5V power supply circuit from coming from a 12V in to 5V out of a TPS54620 on an FPGA development board I purchased. There was an incident with a bad header connection that caused a GPIO pin ...
- 145
0
votes
1
answer
114
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Should I put my buck-converters in parallel or series?
I'm supposed to have two voltages coming out of two buck converters. My starting voltage is 12 V while the buck converters are supposed to output 5 V and 3.3 V respectfully.
Should I make the output ...
- 1