Voltage generation circuit
View Patent ↗A voltage generation circuit includes: a first and second rectification circuits; and one or more amplification units connected between the first and second rectification circuits and configured to amplify an output of the first rectification circuit and provide the amplified output to the second rectification circuit. The second rectification circuit generates a reference voltage.
1. A voltage generation circuit comprising:
a first and second rectification circuits; and
one or more amplification units connected between the first and second rectification circuits and configured to amplify an output of the first rectification circuit and provide the amplified output to the second rectification circuit as a source voltage of the second rectification circuit;
wherein the second rectification circuit generates a reference voltage.
2. The voltage generation circuit according to claim 1 , wherein the amplification unit is configured to amplify and provide the output of the first rectification circuit to the second rectification circuit, and the output of the amplification unit is negatively fed back to the amplification unit.
3. A semiconductor apparatus including a voltage generation circuit, the voltage generation circuit comprising:
a first rectifier configured to rectify a power supply voltage and generate a first voltage;
an amplifier configured to amplify the first voltage and generate a second voltage;
a second rectifier configured to receive the second voltage as a source voltage to generate a reference current; and
a converter, connected to the second rectifier, that receives the reference current to generate an output reference voltage.
4. The semiconductor apparatus according to claim 3 , wherein the first rectifier is a Widlar-type reference voltage generation circuit.
5. The semiconductor apparatus according to claim 4 , wherein the second rectifier is a Widlar-type reference voltage generation circuit.
6. The semiconductor apparatus according to claim 3 , wherein an output of the amplifier is negatively fed back to an input of the amplifier.
7. The semiconductor apparatus according to claim 3 , wherein the amplifier comprises a differential amplifier and a voltage divider.
8. The semiconductor apparatus according to claim 7 , wherein the voltage divider comprises a plurality of resistors.
9. The semiconductor apparatus according to claim 8 , wherein the plurality of resistors comprises a first resistor with a first resistance value R 1 and a second resistor with a second resistance value R 2 .
10. The semiconductor apparatus according to claim 9 , wherein the second voltage corresponds to the first voltage multiplied by (1+R 1 /R 2 ).
11. The semiconductor apparatus according to claim 5 , wherein each component in the first rectifier has a corresponding component in the second rectifier.
12. The semiconductor apparatus according to claim 11 , wherein each component in the second rectifier has a same circuit characteristics as the corresponding component in the first rectifier.