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US 8,476,964 B1Granted
Obtaining elevated output voltages from charge pump circuits
AssigneeEmerson Electric Co.
InventorJagdish Atri
Life of this patent
Estimating the term…
Abstract
According to various aspects, exemplary embodiments are disclosed of a thermostat that includes a charge pump configured to provide a charge pump supply voltage relative to a signal ground of the charge pump. One or more diodes are connected between the charge pump and the signal ground. The one or more diodes are configured to provide a forward voltage drop to increase the charge pump supply voltage.
Claims18
A thermostat comprising:
- a charge pump configured to provide a charge pump supply voltage relative to a signal ground of the charge pump wherein the charge pump has a ground terminal;
- and
- one or more diodes connected between the ground terminal of the charge pump and the signal ground and configured to provide a forward voltage drop to increase the charge pump supply voltage;
- wherein the charge pump is operable for outputting a regulated output voltage absent all of the one or more diodes and for outputting a charge pump supply voltage beyond the regulated output voltage with the one or more diodes present.
1 more element
A power supply circuit comprising:
- a charge pump integrated circuit (IC) configured to output a power supply voltage relative to a signal ground of the charge pump IC wherein the charge pump IC has a ground terminal;
- and
- one or more diodes connected between the ground terminal of the charge pump IC and the signal ground and configured to provide a forward voltage drop to increase the power supply voltage;
- wherein the charge pump IC is operable for outputting a regulated output voltage absent all of the one or more diodes and for outputting a charge pump supply voltage beyond the regulated voltage with the one or more diodes present.
1 more element
A method of boosting voltage output of a power supply circuit, the method comprising:
- adding one or more diodes between a ground terminal of a charge pump for providing a regulated voltage output of a power supply circuit and a signal ground of the charge pump, where the charge pump is operable to provide the regulated voltage output relative to the signal ground absent any diodes between the ground terminal of the charge pump and the signal ground and to provide a charge pump supply voltage beyond the regulated voltage output with the one or more diodes present.
Dependencies are inferred from the claim text.