All Questions
Tagged with dc-dc-converter converter
110
questions
0
votes
1
answer
73
views
Constant output voltage in buck-boost converters
I'm a self-taught student. I'm trying to understand the working principle of buck-boost converters in continous conduction mode.
When the switch is turned on, the equation describing the inductor is ...
- 311
0
votes
1
answer
33
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RCD snubber loss in flyback converter
I have few queries in analyzing the curves. Below is the flyback converter with RCD snubber circuit and waveforms.
When the FET is turned ON, there is no primary current flowing through snubber as the ...
- 25
3
votes
1
answer
211
views
Boost converter does not work according to the theories
I am still a beginner in this field so I would like to gain some insight about boost converters. I wanted to build a boost converter for a school project with this simple design. The parts were ...
- 33
0
votes
0
answers
41
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Current Mode Control
I am referring the doc https://www.venableinstruments.com/current-mode-control-wp and trying to understand behavior of current mode control but unable to understand following things
1.
What is the ...
- 119
1
vote
1
answer
153
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Average Modelling of Buck Converter
I am doing Modelling of Buck Converter for LT3890 (Datasheet link attached) for Frequency response analysis .
I have some reference model of Buck converter ,please refer below image
Datasheet Link: ...
- 119
0
votes
1
answer
134
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What is the relationship between the windings in a forward converter?
I'm trying to sketch the currents through each transformer winding of a forward converter. I also need to sketch the current through the source. I have a sketch of the current through the magnetizing ...
- 57
1
vote
1
answer
111
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Transformer design and calculations
I am trying to find correct way of determining the transformer parameters.
I provided a simple schematic of a PSFB (phase-shifted full bridge) converter below.
How do we determine thr primary ...
- 377
0
votes
0
answers
51
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DC-DC boost Converter for a motor load
To give some context I have a 250 watt DC motor It is powering an electric race car for a school race my class is competing in. The rules say I have to use a specific unmodified motor supplied by 2, ...
4
votes
9
answers
2k
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What options exist for isolating a high power DC analog signal? [closed]
I have a high power DC signal that can range from 0-325 VDC. The source is capable of delivering up to around 150 amperes at 325 volts. I need to monitor the voltage as an analog signal by reading it ...
- 49
0
votes
1
answer
129
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Making DC-DC boost converter 3.7 to 8 V using MC34063
I am trying to make dc dc boost converter 3.9 to 8 V using:
mc34063
https://pdf1.alldatasheet.com/datasheet-pdf/view/12072/ONSEMI/MC34063.html
100 uF 16 V capacitor
220 uF 25 V capacitor
680 pF ...
- 465
2
votes
1
answer
944
views
Identify SMD DC-DC converter chip
I am trying to identify the DC-DC converter chip in the images below (two variants of the same PCB). Input (B1) is in the range of 20-60V and output is 12V. I have found devices from Torex Semicon ...
- 81
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votes
0
answers
41
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Low Side N-Channel 75V to 12V Buck Converter with feedback
I want to design a buck converter for E-bike with 75V input and 12V, 20A (240W ideal case) output to drive the other components of E-bike using n-mosfet as a low side.
I also want to use a feedback ...
1
vote
1
answer
191
views
Buck converter simulation(Psim) always return the half value of the output voltage
I try to design a buck-converter in PSIM simulation program. Let me write the circuit's requirements:
Frequency = 80kHz
Ripple < 0.5%
\$V_{input}\$ = 30V
\$V_{out}\$ = 12V
\$R_{load}\$ = 10 \$\...
- 11
0
votes
1
answer
110
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Change in switching frequency across gate source
I am working on a bidirectional half bridge DC-DC converter. The converter circuit is shown below.
I used a TLP250 IC for the driver circuit. A square wave with 20 kHz switching frequency was given ...
- 3
1
vote
1
answer
119
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24 V input, three 5 V outputs DC-DC buck converter design
I would like to make a DC-DC buck converter which has 24 V input and three 5 V outputs, but a typical buck converter circuits have only one output. How to change it to three outputs without an extra ...
- 13