Voltage regulator and power supply

A power supply, comprising a voltage regulator, wherein the voltage regulator comprises:

• an operational amplifier including an input terminal and an output terminal, and the operational amplifier is configured to generate an output voltage to be output from the output terminal based on a reference voltage received from the input terminal;
• an offset voltage control module including one stage of regulation branch or more stages of regulation branches connected in parallel, and the offset voltage control module is configured to control an offset voltage of the operational amplifier with the one or more stages of regulation branches to regulate the output voltage, and
• a bandgap reference generation circuit, configured to generate a reference voltage irrelevant to a temperature coefficient, wherein the bandgap reference generation circuit comprises at least one of:
• a ΔVGS-based bandgap reference generation circuit having a full CMOS reference offset structure, a PTAT unit-based and VGS-based bandgap reference generation circuit having a full CMOS reference offset structure, and a PTAT unit-based and BJT-based bandgap reference generation circuit having a complementary structure.

A voltage regulator, comprising:

• an operational amplifier including an input terminal and an output terminal, and the operational amplifier is configured to generate an output voltage to be output from the output terminal based on a reference voltage received from the input terminal;
• and
• a bandgap reference generation circuit, configured to generate the reference voltage that is irrelevant to a temperature coefficient, wherein the bandgap reference generation circuit comprises at least one of:
• a ΔVGS-based bandgap reference generation circuit having a full CMOS reference offset structure, a PTAT unit-based and VGS-based bandgap reference generation circuit having a full CMOS reference offset structure, and a PTAT unit-based and BJT-based bandgap reference generation circuit having a complementary structure.