Classification of DC/AC converters:
DC/AC converters (hereinafter referred to as inverters) can be basically divided into two categories: single-phase and three-phase. Single-phase inverters are suitable for medium and low power applications, while three-phase inverters are suitable for medium and high power applications. These two categories can be further classified according to the following characteristics:
(1) According to the nature of the input DC power supply: voltage-type inverter circuit (the input power supply is a constant voltage source); current-type inverter circuit (the input power supply is a constant current source).
(2) According to the characteristics of circuit structure: half-bridge circuit; full-bridge circuit; push-pull circuit; other forms.
(3) According to the components of the circuit: ordinary thyristor inverter circuit; high power transistor (GTR) inverter circuit; gate turn-off (GTO) thyristor inverter circuit; MOSFET (MOS field effect transistor) inverter circuit; IGBT inverter circuit, etc.
(4) According to the output waveform: sine wave inverter circuit; non-sine wave inverter circuit.
(III) Integrated voltage regulator
Integrated voltage regulators are solid-state circuits that integrate diodes, transistors, resistors, capacitors, and other components into a single semiconductor or insulating substrate using semiconductor and thin-film processes. The integrated voltage regulator industry has developed rapidly over the past decade, with hundreds of varieties now available both domestically and internationally. Based on circuit operation, integrated voltage regulators can be categorized as linear and switching. Based on circuit structure, they can be monolithic and combined. Based on pin connection, they can be three-terminal and multi-terminal. Based on manufacturing process, they can be semiconductor integrated voltage regulators, thin-film hybrid integrated voltage regulators, and thick-film hybrid integrated voltage regulators.
Integrated voltage regulators are voltage-regulating circuits fabricated on semiconductor silicon wafers using processes such as epitaxy, oxidation, photolithography, diffusion, and metal evaporation. The various components of such integrated voltage regulators are manufactured in the same process, resulting in high reliability and improved voltage regulation accuracy, while also reducing size and weight.