DC-DC Converters with Burst Mode Technique

  • Thread starter Thread starter uhdam
  • Start date Start date
  • Tags Tags
    Mode
AI Thread Summary
The discussion focuses on the design of a DC-DC converter aimed at maintaining a constant output voltage through a feedback loop. The user implemented a Burst Mode technique to compare the output voltage with a reference voltage, generating an error signal for further processing. However, the circuit is not producing the expected pulse output from the comparator, only showing the error signal. Suggestions include addressing potential issues with the load floating relative to the feedback network and adding a ground on R1 to stabilize the circuit. The user seeks further advice to resolve the pulse output issue and achieve their design goal.
uhdam
Messages
10
Reaction score
0
Hello Everyone,

I am working on DC-DC converters. The actual approach of my circuit is that to maintained the output voltage remains constant for both line and load regulation. So that, I added the feedback loop of my circuit from the load resistor. To maintained the constant output voltage, I used (Bust Mode technique) to compare with two signals which are output voltage and reference voltage, after comparing both signal the comparator gives error signal. After that, another comparator compares with the generated error signal and pulse signal which should give the pulse of comparator output to the transistor. But, its not giving the pulse still its showing the error signal only. So, what should I have to do to achieve my goal.

Below I have attached the circuit image. So, please see the circuit image and give me the suggestions.
 

Attachments

  • Untitled.jpg
    Untitled.jpg
    50.3 KB · Views: 403
Engineering news on Phys.org
I think the load is floating (well, 1Gohm anyway) relative to the feedback network. Try adding a ground on R1.
 
Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...
Thread 'Weird near-field phenomenon I get in my EM simulation'
I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
Back
Top