DPWM techniques in digitally controlled, EMI compliant DC-DC converters

(چکیده مقاله) :
Abstract :

This paper aims to present a combined, DPWM based control method and spectrum flattening technique of a mid-power range DC-DC converter. The research goal was to obtain sustainable results in both switching control and EMI compliance, using one 8 or 16 bits RISC MCU as main control unit running a performance- and speed-optimized firmware. This approach describes a hybrid method preserving the good dynamic performances of an analog switching regulator controller and adding the flexibility of controlling the output voltage by adjusting the duty cycle value of a DPWM signal and thus controlling the average voltage value of the signal applied in the feedback circuit of a DC-DC converter. Beside the feedback control of the DC-DC converter an active EMI reduction technique applies on this design by taking advantage on the constant-frequency, forced-continuous current mode architecture of the switching regulator controller, which allows its frequency to be synchronized with an external control clock dithered by a software implemented pseudo-random sequence generator. All this efforts concludes in reducing the noise power considerably at the main peak and at the next peaks.

(توضیحات تکمیلی) :

(توضیحات تکمیلی) :
Description :

مقاله ISI انگلیسی اصلی
سال انتشار:2018
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 8 صفحه

Authors / Descriptions(نویسندگان/توضیحات): مقاله ISI مربوط به ترجمه مقابل / تکنیک‌های DPWM در کنترل دیجیتال، مبدل‌های DC-DC سازگار با EMI
Sent date(تاریخ ارسال) : 1397/12/16  |   3/7/2019
Number of visits(تعداد بازدید): 739
Key words (کلمات کلیدی): DPWM,EMI,PSRG,SFM,SMPS
Number of pages(تعداد صفحات) : 8
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