Patent ID: 11863066
Assignee: STMICROELECTRONICS S.R.L.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 13:
14. A system, comprising:
a circuit configured to receive first and second voltages; and
a voltage supply circuit including:
a first charge pump stage configured to generate the first voltage having a first polarity;
a second charge pump stage configured to generate the second voltage having a second polarity that is different from the first polarity;
an oscillator configured to output a clock signal to the first charge pump stage;
a regulator configured to supply the oscillator with a regulated voltage; and
a control stage configured to:
receive a voltage representative of a magnitude of the second voltage;
compare the voltage representative of the magnitude of the second voltage with a first reference voltage; and
in response to determining that the magnitude of the second voltage exceeds the first reference voltage, cause the regulator to decrease the regulated voltage.