FPGA based Digital Pulse Width Modulator with Time Resolution under 2 ns

2007 ◽  
Author(s):  
Santa C. Huerta ◽  
A. de Castro ◽  
O. Garcia ◽  
J.A. Cobos
Keyword(s):  
Time Resolution ◽  
Pulse Width ◽  
Pulse Width Modulator ◽  
Digital Pulse

Simple Digital Pulse Width Modulator Under 100 ps Resolution Using General-Purpose FPGAs

2013 ◽  
Vol 28 (10) ◽  
pp. 4466-4472 ◽  
Author(s):  
Daniel Costinett ◽  
Miguel Rodriguez ◽  
Dragan Maksimovic
Keyword(s):  
Pulse Width ◽  
General Purpose ◽  
Pulse Width Modulator ◽  
Digital Pulse

scholarly journals Increasing the time resolution of a pulse width modulator in a class D power amplifier by using delay lines

2014 ◽  
Vol 12 ◽  
pp. 91-94 ◽  
Author(s):  
M. Weber ◽  
T. Vennemann ◽  
W. Mathis
Keyword(s):  
Power Amplifier ◽  
Time Resolution ◽  
Pulse Width ◽  
Audio Signal ◽  
Open Loop ◽  
Delay Lines ◽  
Class D ◽  
Ac Power ◽  
Pulse Width Modulator ◽  
Power Stage

Abstract. In this paper, we present a method to increase the time resolution of a pulse width modulator by using delay lines. The modulator is part of an open loop class D power amplifier, which uses the ZePoC algorithm to code the audio signal which is amplified in the class D power stage. If the time resolution of the pulse width modulator is high enough, ZePoC could also be used to build an high accuracy AC power standard, because of its open loop property. With the presented method the time resolution theoretically could be increased by a factor of 16, which means here the time resolution will be enhanced from 5 ns to 312.5 ps.

scholarly journals Smooth-Transition Simple Digital PWM Modulator for Four-Switch Buck-Boost Converters

Electronics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 100
Author(s):  
Miguel Fernandez ◽  
Alberto Rodriguez ◽  
Miguel Rodríguez ◽  
Aitor Vazquez ◽  
Pablo Fernandez ◽  
...  
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Input Voltage ◽  
Smooth Transition ◽  
Boost Converters ◽  
Voltage Range ◽  
Pulse Width Modulator ◽  
Digital Pulse ◽  
Smooth Transitions

This paper proposes a simple, hardware-efficient digital pulse width modulator for a 4SBB that enables operation in Buck, Boost, and Buck+Boost modes, achieving smooth transitions between the different modes. The proposed modulator is simulated using Simulink and experimentally demonstrated using a 500 W 4SBB converter with 24 V input voltage and 12–36 V output voltage range.

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