All Questions
103
questions
2
votes
2
answers
810
views
LM2596S-ADJ DC to DC buck converter
Does the Schottky diode current rating affect the performance of a DC to DV buck converter when loaded? I'm using a 1N5822 Schottky diode instead of a 1N5825 on a National Semiconductor LM2596S-ADJ ...
CommunityBot
- 1
2
votes
3
answers
4k
views
Buck converter input current
How to calculate the input current consumption of the buck converter.
It's seem that the output current only depends on the output voltage, duty cycles, input voltage, and coil inductance. Does the ...
1
vote
1
answer
187
views
Can I connect buck boost converters back to back?
I need to power a Bluetooth speaker (Beatbox Portable) with a battery pack while also allowing DC power in.
I also want to use the input DC power to charge the four cell lithoum ion battery pack.
Can ...
CommunityBot
- 1
0
votes
3
answers
118
views
Driving a P-channel MOSFET with high voltage input
I designed a buck converter as an MPPT charger using high side switching. It seems the signal on the gate of the MOSFET good. If a solar panel with low voltage like solar MPPT 18volt there isn't a ...
- 465k
1
vote
2
answers
96
views
Question on Turn-off Snubber Operation
I'm struggling to understand how this snubber circuit reduces power loss during the off time for this buck converter. Anybody able to explain it's operation / what is happening for each component ...
- 22.7k
0
votes
3
answers
115
views
Validate my 3V3 power system
My Power System, can someone validate it? I'm not familiar with using the TPS63060.
Datasheet can be found at: https://www.ti.com/product/TPS63060
I'm trying to power a ATMega328p-AU + 4 digit 7-...
1
vote
1
answer
156
views
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: ...
- 22.7k
0
votes
0
answers
51
views
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, ...
- 84.9k
0
votes
1
answer
94
views
How to divide 12V/15A buck converter output into two outputs with the same specs? [closed]
I am currently working on a project to build a mini-atx pc for a rover. Heres a simple schematic of it :
The picoPSU Atx connector takes in 12V DC with a max of 15A peak and the zotac gpu 12V DC with ...
- 34.6k
2
votes
0
answers
120
views
Power circuitry not coming up
I've created a PCB that has two buck/boost converters, the second one being connected to the output of first one. The enable pin of the second buck converter is connected to the PG pin of the first ...
- 15.7k
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 \$\...
- 25.3k
0
votes
2
answers
801
views
What is the mode of MOSFET or BJT in buck converter?
I want to implement buck converter with conventional design (not synchronous etc) like below.
And I want to implement the converter for two cases. One is to use BJT as switching device and another is ...
CommunityBot
- 1
0
votes
0
answers
50
views
Can a buck converter functioning in CCM have non-linear behaviour at light load currents?
I've been designing a Simulink/Simscape model of a TI buck converter launchpad (https://www.ti.com/tool/BOOSTXL-BUCKCONV) and I'm trying to have my model fit the behavior of the device.
The board can ...
- 34.4k
0
votes
0
answers
41
views
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 ...
- 8,561
0
votes
1
answer
167
views
What extra components are necessary to bypass a boost converter when the input voltage exceeds its regulated output voltage?
I've made a USB-C power supply that's powered by a wind turbine. It contains a boost converter and a separate buck converter.
I'm aware that there are several buck/boost USB-C power supplies out there,...
- 169k