Browsing by Subject "Voltmeters -- Testing"
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Item An approach in IC testing(Texas Tech University, 2003-12) Mettu, Niranjandas ReddyDigital testing has revolutionized the semiconductor industry. The demand for quality and reliable product enhanced the testing methods. Testing a device has many challenges. Usage of ATE (Automated Test Equipment) is a big leap in the industry decreasing the time to market pressure and increasing the reliability of the product at various stages [2]. Testing is done at various levels in design and manufacturing to enhance the product quality. An approach is discussed to test any digital IC on any tester using a generic algorithm for DC parametric and loose functional tests. This algorithm can further be extended for AC parametric test and full fledged functional tests according to the ATE capability.Item Limitations of switching voltage regulators(Texas Tech University, 2004-05) Vallamkonda, SathishNearly almost every electronic system utilizes a regulated power supply as an essential requirement for its proper operation. Switching voltage regulation is the technique by which an unregulated source power is efficiently converted to regulated load power through the use of controlled power switching devices and energy transfer elements. These switching voltage regulators uses magnetic components like inductors, for storing and transferring energy, which are bulky in size and often suffers from EMI, winding and core losses. Depending on the power level, modem IC switching regulators may integrate the entire converter except for the main magnetic element and the input/output capacitors. Presence of inductor in the converter means the converter size is bulky even at higher frequencies. These are the major limitations for a switching regulator to take an integrated circuit (IC) form. Switched-mode voltage converter circuits that utilize 'capacitors only' as the energy transfer elements are called switched capacitor voltage converters or charge pump voltage converters. Switched-capacitor voltage converters are attractive because they use no magnetic components and are easily amenable to monolithic integration. At the beginning, this thesis describes about the operation, design and simulation of various techniques used in voltage conversion using switching voltage regulators aiming at decreasing the size of the reactive elements. Finally, it describes about the new kind of switching voltage regulators having no inductors called switched-capacitor voltage regulators or charge-pump voltage regulators.