Circuit design of step-down voltage regulators for Embedded EEPROM
| Autor: | Chun-Chen Liao, 廖春成 |
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| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 This thesis is focused on design of the required and switch-able voltage regulators and buffers for embedded EEPROM writing, reading and erasing operations. The circuits include band-gap reference voltage circuit, a 1.0V step-down voltage regulator, a 1.5V step-down voltage regulator, a 1.8V step-down voltage regulator and non-overlap switch. These circuit blocks were all designed using 0.35μm CMOS technology. This thesis analyzes and designs the band-gap reference voltage with low line regulation rate. The variation of output voltage is 10μV/V when the supply voltage changes from 2.5V to 4.5V in room temperature. The variation rate of output voltage is 0.21% when VDD=2.6V and temperature changes from -20 °C to 100 °C. The consumed power is only 10μW. In this thesis, we also design 1.0V, 1.5V voltage regulators using source followers and design a 1.8V voltage regulator using push-pull source follower. The push-pull source follower includes current sources and startup circuits. The characteristic of which are also analyzed and simulated. Finally, in order to realize non-overlap switch that can be used to switch different voltage regulators, we utilized inverters and NOR gates to design and implement it. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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