Power voltage supply device with automatic temperature compensation

A power voltage supply device, comprising:

• a reference bias voltage generating circuit, configured to generate a reference bias voltage;
• a temperature compensation bias voltage generating circuit, configured to generate a temperature compensation bias voltage, wherein the temperature compensation bias voltage changes as a temperature rises;
• a compensation voltage generator, coupled to the reference bias voltage generating circuit and the temperature compensation bias voltage generating circuit to receive the reference bias voltage and the temperature compensation bias voltage, and configured to generate a first power voltage based on the reference bias voltage, and selectively boost the first power voltage based on the temperature compensation bias voltage;
• and
• a voltage buffer, having an input terminal coupled to the compensation voltage generator to receive the first power voltage, and configured to generate a second power voltage corresponding to the first power voltage to a load circuit.