Description

Very-large-scale integration (VLSI) is the process of creating an integrated circuit (IC) by combining thousands of transistors into a single chip. The microprocessor is a VLSI device. Before the introduction of VLSI technology most ICs had a limited set of functions they could perform. An electronic circuit might consist of a CPU, ROM, RAM and other glue logic. VLSI lets IC designers add all of these into one chip. The proposed implementation is thermal energy yielding power supply. The designed power supply does not need any battery for startup and is used to power up any device with load of 50kiloohm.The power supply circuit includes an oscillator, charge pump, boost converter and a comparator. The circuit is designed to handle the maximum load of 50 kilo ohm. A minimum voltage of 40mV is needed for the circuit to startup. A maximum power of 18.03nW can be obtained from the output of the boost converter circuit. This implementation is done in TANNER EDA tool in cmos technology.