TELKOMNIKA Telecommunication, Computing, Electronics and Control
Embedded processor system for controllable period-width multichannel pulse width modulation signals

TELKOMNIKA Telecommunication, Computing, Electronics and Control
Embedded processor system for controllable period-width multichannel pulse width modulation signals

Embedded design techniques
Processing system
Programmable logic
programming interfaces
Pulse width modulation

This paper proposes a sophisticated embedded processor system configured
on zynq-xc7z020 field programmable gate array (FPGA) device for
generating four channels pulse width modulation signals with variable duty
cycles and periods using embedded design techniques. The main advantages
of the technique are the high ability to perform a simultaneous control on
period and pulse width of the generated signals and a high system design
adaptation to choose the number of input/output channels. Controlling the the
period and the pulse width is achieved by injecting a digital signal to the
designed system to manipulate embedded timers’ operation. Vivado design
suite is used to develop the system hard ware in the integrated development
environment where the processing unit and peripherals are instantiated and
interconnected. A practical aplication program in C language is prepared to
make the system act according to the target. The designed system can be
used to drive multi-phase D.C to D.C convertors. The system performance is
verified by using vivado logic analyzer and chipscope windows. The
superiority of the proposed approach over other approaches is that it resulted
in a multi-inputs/multi-outputs pulse width modulation system with high
controllability on the pulse width and the period that ranges from 15 nsec to
60 sec.

Mazin Rejab Khalil, Laith A. Mohammed

http://journal.uad.ac.id/index.php/TELKOMNIKA

Sep 24, 2020

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