All Questions
103
questions
0
votes
3
answers
113
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 ...
1
vote
2
answers
94
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 ...
- 13
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
148
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: ...
- 119
0
votes
0
answers
49
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, ...
1
vote
1
answer
183
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 ...
- 11
0
votes
1
answer
93
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 ...
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 ...
- 163
0
votes
0
answers
49
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 ...
- 1
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 ...
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
160
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,...
- 139
0
votes
2
answers
347
views
Buck Converter Inductor Ripple Current and EMI
When attempting to reduce EMI at the schematic design stage of a buck converter it's often recommended that one minimize the output ripple voltage. It's clear why this would be useful.
Rarely is it ...
- 187
0
votes
0
answers
58
views
Using 2 LiPo Batteries via 2 Buck Converters for External Notebook Power Supply - will it work?
I have an old ThinkPad X220T notebook of which the internal battery is broken (and removed).
To get my notebook working on the go again I want to build an external portable power supply with 2 LiPo ...
1
vote
1
answer
47
views
Synchronous buck converter designing issue
what I'm recently occupied with is trying to create a model and later build a synchronous buck converter. I've been doing some troubleshooting to try to resolve my issue, but honestly I just got stuck....
- 11