All Questions
Tagged with buck-boost mosfet
15
questions
0
votes
1
answer
56
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FET selection and quantity for buck-boost converter design
I am working on designing a buck-boost converter where the input voltage is 24 V regulated, and the output voltage ranges from 12 to 48 V with a current rating of 5 A. The design should also allow for ...
- 524
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1
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43
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Switch Selection in Buck-Boost Controller Designs
I have reviewed several buck-boost controller designs, including the LT8390 nd I am puzzled by the selection of different switches for the buck and boost sections. For instance, on page 27, the ...
- 524
2
votes
1
answer
241
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Use a MOSFET to switch a 25V power source between two loads with backflow protection
I would like to switch the output of a buck-boost converter (input) between a powerbank output (output1) and a charging circuit (output2). The buck-boost voltage output is between 5V and 28V. The ...
- 33
0
votes
1
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317
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Power MOSFETs used as a switch in DC/DC converter circuits in saturation region
So I have explored various high voltage DC/DC converter circuits. Consider a boost converter where you have a low side switch where entire load voltage appears across the switch which is MOSFET VDS ...
2
votes
1
answer
185
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What is causing this drain current ringing
This is 4 kW Buck boost, Vin Min = 200 V. L = 600uH, switch used is C3M0065100K. With just 2.4 kW power, I notice the high Di/Dt on bottom switch drain current. Top and bottom switches have RCD ...
0
votes
1
answer
284
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DC -DC buck converter W/o PWM signal( kind of)
Hey so i'm new to electronics and I've tried constructing a buck converter (using software only) circuit without the use of an external PWM source (microcontroller, 555 circuit) and i came up with ...
- 633
1
vote
2
answers
135
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Buck- Boost converter failed on surge at 500volts
Basic Technical Details
The driver is basically a DC solar charge controller, it's used in solar street lights, it requires a battery and panel. This driver uses the Buck-Boost Topology. At night it ...
1
vote
2
answers
2k
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How to improve buck converter's efficiency
I am designing a buck converter for 600 - 10V converting (60 times lower than input).
My first question - is this even possible? I've seen a 650 - 40V converter on mouser, but that is the best that I ...
- 1,039
1
vote
1
answer
110
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Voltage drop over MOSFET controlled by microcontroller
I made the circuit below to power a microcontroller and a load from one power source.
But looking at the voltage drop between drain and source of the IRLZ44N MOSFET, instead of 12 V I got only 3.1 V ...
0
votes
1
answer
113
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Generally, how do you describe the functions of the basic parts in a buck or boost converter? The parts are enumerated in the post [closed]
Here is a homework question I am answering.
1. Explain the function of the following parts in the DC-to-DC converter.
a. MOSFET
b. Schottky Diode
c. Inductor
d. Capacitor
Here is an accurate basic ...
- 469
0
votes
2
answers
5k
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Why specifically use a MOSFET and Schottky diode on a buck or boost converter and not other transistors or diodes?
My electronics professor is currently teaching DC-to-DC converters. He decided to drop us some theoretical homework and just postpone the experiment. He gave us some questions. This is one of those ...
- 469
2
votes
0
answers
70
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LTspice MOSFET stops charging capacitor past Vt
I'm building a buck-boost converter that transfers C1's charge to C2. In the schematic shown below, C1's initial charge is 4V. When I use switches instead of MOSFETs in the circuit, everything works ...
- 49
1
vote
0
answers
210
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Why does my input current inverter is high?
I have a problem with input current in my inverter is high. My inverter will use for solar panel and using boost converter to convert dc voltage 12-18 Volt to 24 volt. I'm using P channel mosfet ...
- 135
0
votes
3
answers
195
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How to digitally control a MOSFET? [closed]
I'm trying to make a temperature controller for peltier module using MOSFET. The peltier uses 3.3 to 12 volts and 15A. So far I've only come across a way in which the circuit uses a potentiometer at ...
- 35
0
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0
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523
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Why does this buck boost with dual MOSFETs fails output at certain input voltages at light load?
Buck boost design
A buck boost converter for 11A 45V output and 33.0-55.0V input has been designed using the Webench Power Designer. The LM5176 based PCB design was adapted for dual MOSFETs (4 times 2 ...
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