VLSI Design of Multi Output Voltage Regulator for Precision Applications

Abstract

Today Industry is pushing towards complete system on chip design solutions thatinclude the power management. The power management technique has increasedspectacularly in the use of portable, handheld battery operated devices. Powermanagement system contains several subsystems including linear voltage regulators,switching regulators and control logic.The aim of dissertation is to design state of art multi output voltage regulator forPrecision Applications. Precision applications requires low temperature coecient,low power design and operation with wide range of temperature such as -55C to 125C for military and -40 C to 85 C for industrial applications. Especially when design istargeted as part of ASIC then further process and supply variation are also to be ad-dressed.Such regulator needs very good dynamic performance. The reference voltageshould provide ultra low temperature coecient for the military Temperature rangeof -55C to 125C. The commercial o the shelf available voltage reference does notmeet this type of requirement. The two novel circuit topologies has been identied,designed and implemented to achieve such a high precision requirements. Here theimprovement methods regarding voltage regulator and its modules are discussed andsimulated.All the module of the voltage regulator like Voltage reference, Pass elements,Sample elements and an error amplier are designed and simulated using the DesignArchitecture and Eldo spice Tool using general 0.35um technology are discussed andanalyzed.