All Questions
9
questions
1
vote
1
answer
44
views
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
0
votes
1
answer
209
views
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 ...
- 1
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 (...
1
vote
2
answers
218
views
What SMPS topology is this?
I came across this SMPS topology that I don't recognize. It looks sort of like a combination of a buck converter and a boost converter, but I can't quite figure it out. I haven't been able to find ...
- 51
-2
votes
1
answer
552
views
SMPS buck convrter with PWM controller circuit
Hi there
I am designing a buck converter run on PWM circuitry for a uni project to drive a MOSFET switch and keep my output voltage constant.
The specs are:
input voltage of 20v DC +/- 4
output ...
4
votes
1
answer
2k
views
SMPS Buck converter with PWM circuit
I am designing a buck converter with PWM circuitry for a school project to drive a MOSFET switch to keep my output voltage constant.
The specs are:
input voltage of 20v DC +/- 4
output voltage of 5v ...
- 169
1
vote
1
answer
533
views
AC/DC SMPS- How to do PWM [closed]
I'm trying to design and build a simple ac/dc smps that outputs 5v dc and capable of 2 amps. I currently have some of it designed but the problem I'm running into now is how to get a pwm signal with ...
- 69
1
vote
2
answers
3k
views
What PWM frequency to use on SMPS
Just to give a little back ground on the project - I am currently building a buck converter linked up to 2 * 250W solar panels in parallel, then use an MPPT algorithum to track the max power. I will ...
- 395
6
votes
1
answer
5k
views
Audible noise in DC-DC buck converter
In my design, I have a +3.3 V SMPS that provides power to digital circuits (microcontroller, EEPROM, etc.). The microcontroller allows applying a 100 Hz PWM signal with variable duty cycle and with an ...
- 368