Series Operation of Switched-mode Power Supplies for LED Lighting

Solid-state LED lighting, as the fourth-generation lighting technology, has drawn great popularity due to its long lifetime, high luminous efficacy, high energy efficiency and sustainability. Technical advancement and rapid cost-down in LED technology bring entirely new possibilities in lighting applications and stimulate a significant...

DLL Based Single Slope ADC For CMOS Image Sensor Column Readout

This thesis presents a Delay Locked Loop(DLL) based Single Slope ADC. Compared to the convertional Single Slope ADC, the readout speed is increased by 16 times. A DLL is designed with a start-controlled Phase Frequency Detector (PFD), a differential ended Charge Pump (CP) and fully differential Delay Cells (DC). The multi-stage comparator with...