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60
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Peltier cooler driving circuit
To prevent closing as duplicate immediately, there is the list of the most relevant questions:
How to drive a Peltier element?
Driving a Peltier w/ PWM or analog out
Driving a Peltier element with ...
- 103
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1
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What is the relation between the control voltage and resulting pwm in a voltage-mode control system for DC-DC converters?
I'm currently learning about negative feedback and voltage mode control for various DC-DC converters. I'm very confused about how the control voltage changes the pwm signal, along with how the ...
CommunityBot
- 1
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Using a coupled inductor in a multi phase buck converter - how to set the inductor dot notation and converter PWM for best ripple reduction
Based on these Charles Sullivan papers, we can use a coupled inductor in a multi phase converter to reduce inductor ripple current.
https://www.princeton.edu/~minjie/files/sullivan-CICC-2021.pdf
http:/...
2
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1
answer
136
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Why won't my voltage feedback system work?
Vin is a constant DC source. This circuit will take a random DC input between 12.6V and 48V, and then maintain a constant output voltage of 5V using a system of voltage feedback.
with the source code,...
CommunityBot
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1
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Why doesn't my buck converter work properly?
Such is my circuit:
Vin is a constant DC source. This circuit will take a random DC input between 12.6V and 48V, and then maintain a constant output voltage of 5V.
At the left bottom corner, there is ...
- 25.3k
0
votes
2
answers
153
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Voltage not varying with duty cycle
I want to make a circuit that changes voltages with the duty cycle as well as doubles that for me. I therefore made a voltage doubler circuit along with alternating PWM wave. But as I changed the duty ...
- 669
1
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0
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Noisy signal output from BD2320 MOSFET driver
I need help or technical solutions relating to this issue I encountered with BD2320.
I intend to use two BD2320 drivers for an interleaved buck converter. One of the channels works well, but after ...
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1
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1
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142
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Buck converter PWM generation issue
I am trying to design a buck converter without using a controller IC. Input 32-52V output 12V, 50W.
I don't know how to get the desired duty cycle from the stable 2.5V error feedback. While it is ...
- 22.7k
1
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0
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125
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Inductor saturation current
I'm trying to determine an inductor's saturation current, I use a PWM with a gate driver (TLP250) and a 0.4Ω sense resistor at the source which I probe across to capture the current waveform.
I ...
- 34.3k
2
votes
1
answer
151
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Is it possible to include a behavioural source in an LTspice sub-circuit for use in a buck converter model?
I'm in the process of modelling a buck converter following the approach in Sam Ben-Yaakov's A unified SPICE compatible average model of PWM converters article in which he models a switched inductor ...
- 137
1
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1
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PWM modulator in voltage mode buck converter
I am referring to datasheet of LM3743 block diagram in page 5.
The EA and PWM Comp is in leading edge modulator configuration. According to my understanding SR latch which comes after PWM Comp must ...
- 15.7k
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1
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993
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UC3843 PWM controller not generating PWM output
I have designed a BUCK converter circuit using UC3843. Here is the
DATASHEET
.
You can find the circuit diagram above. I want to limit the current to 10A and accordingly I have designed the external ...
1
vote
1
answer
221
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BLDC Motor ESC/Controller Analog Receiver PWM/Wiring - Won't detect with potentiometer
I have an RC/drone ESC that takes a PWM input signal at 3.3 V/5 V for throttle control, but has no onboard buck/BEC. I have the illustration below for my current setup.
This motor works excellent with ...
- 9,270
-2
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2
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1k
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Average voltage in PWM?
I have a doubt regarding average PWM voltage. Let's take a buck convertor with Vin=10V, Vout=5V. With this we can determine the duty cycle of PWM needs to be 50%. Thus means the MOSFET of the buck is ...
- 159k
1
vote
1
answer
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Range of transformer Q variation for UC3844B converter?
Here the UC3844B High Performance Current Mode Controller (at left, SO-8) is used with a custom transformer to step down bus voltage to 24V. The transformer is likely rated for about 40W, so ...
- 16.3k