All Questions
60
questions
0
votes
1
answer
497
views
MPPT buck converter vs Ordinary buck converter?
I’m building a small arduino project which is going to be powered using a small solar panel setup with a battery as it’s UPS for power backup during the dark.
The setup is going to be like
Solar ...
- 690
0
votes
2
answers
125
views
Getting 12Amps of 0-12VDC from relatively low frequency PWM
I am trying to drive 4 parallel TEC elements. (TEC1-12706) I intend to run them together up to 12A (or 3A each.)
I am using an ATMega328p (in the form of an Arduino Uno Board) to control the system, ...
- 1
1
vote
2
answers
365
views
PWM-Switch Model of a Cascaded-Buck-Boost
Im trying to develop the PWM-Switch Model of a Cascaded-Buck-Boost.
First of all i want to extract the Large-Signal Transfer function for the Buck-Mode.
I'm working through the book "Switch-Mode ...
- 165
1
vote
0
answers
74
views
Modelling DC/DC-Converter
i want to model a cascaded Buck/Boost-Converter with FAST like mentioned here: https://cbasso.pagesperso-orange.fr/Downloads/PPTs/Chris%20Basso%20APEC%20seminar%202013.pdf.
The goal is to implement a ...
- 165
0
votes
0
answers
137
views
Buck Converter MOSFET Output Voltage distorted (PWM)
The input to my buck converter MOSFET switch is a PWM signal with a certain duty cycle. However, upon observing the voltage waveform of the MOSFET, the voltage is a bit distorted.
The input to ...
- 13
1
vote
3
answers
496
views
Buck converter, duty cycle has inverse relationship with Vout?
I've been trying to design a DC-DC step down (buck) converter for a school project, and have been getting unexpected results. I'm using a PWM signal from an arduino to step down the voltage, and have ...
- 11
1
vote
1
answer
512
views
Why does the PWM signals amplitude drop once connected to low-side n-mosfet switch?
I am applying a 3.3 V pwm signal to a circuit similar to the following (Credit: Olin Lathrop):
I am using an IRLR024N N-MOSFET, which switches if i connect the gate to the 3V3 pin of my ...
- 105
2
votes
1
answer
751
views
Voltage drop pulse transformer
I'm trying to design a buck converter controlled by a PWM signal. The PWM signal and the converter is isolated with a pulse transformer.
My issue is that the pulse transformer behaves differently ...
- 69
0
votes
1
answer
451
views
TL5001 buck converter issue
I have constructed the following 12v in - 3.3v out buck converter circuit using a TL5001 PWM controller based on this document. After etching PCBs and soldering surface mount components the board ...
- 869
0
votes
2
answers
255
views
Simple Buck/Boost/Other Topologies building tutorials [closed]
For educational reasons, I want to build physical DC-DC converters. I would start with simple buck or boost topology. For start, I wish to have a simple gate-drive for switches, without PWM modulation....
- 131
1
vote
0
answers
1k
views
Peltier Circuit Components
New to electrical in general, so be gentle...
Looking to drive a TEC1-12706 as a cooler/heater, using 24V, 500 Hz PWM as input. To avoid thermal cycling caused by PWM, incorporating LC filter.
In ...
- 21
0
votes
0
answers
130
views
How to get uni polar sinusoidal wave from buck converter?
I am trying to build a pure sine wave inverter by using a buck converter cascaded with a square inverter. My hope is that I can vary the duty cycle in such a fashion so as to reach a fully rectified ...
- 39
0
votes
2
answers
696
views
Current limiting a dc-powered heating element
What would be the best way to limit the current into a 2.1Ohms, 12V max heating element fed with a range of known dc voltages (5V to 12V) with also known maximum input currents (2A to 5A)? The load ...
- 118
1
vote
3
answers
178
views
Is there anything wrong with my current setup for LED
I'm planning on building my own 5W high power LED Lamp, and this is my current setup:
Circuit
My power source is going to be 3 Li Ion Batteries in series, giving 14.8 volts for most of the time.
I ...
- 43
0
votes
1
answer
388
views
Voltage mode (PWM) control
For a buck converter, I am trying to understand how the appropriate signal is sent to the PWM block to control the duty cycle of the FET. When the output voltage is equal to your reference voltage (...
