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The non-isolated buck topology for LED driver is proposed to reduce volume and cost without the need of large transformer. Besides, in the entire universal range of AC input voltage, the proposed self-adjusted feed-forward control (SAFFC) technique ensures small variation in the LED current. The auto-tracking off-time control (ATOTC) technique is also adopted to adjust the off time to guarantee the...
In this paper, we adopt switching technology of double satellites navigation mode based on BeiDou-2 (BD2) and Global Position System (GPS), design GNSS/MIMU integrated navigation system based on TMS320C6747. The designed system is not affected by the possible transient invalidation of GNSS. The hardware design of system is completed. The navigation switching technology is analyzed when GNSS signal...
In this paper, a 6-bit 1-GS/s 49 mW two-channel two-step analog-to-digital converter (ADC) without calibration is implemented in 0.13- mum CMOS process. The proposed multiplying digital-to-analog converter (MDAC) processes the analog signal with two clock periods for one conversion: half for sampling, half for coarse ADC (CADC) resolving, and one for residue amplification. A self-timing technique...
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