Charge pump regulator and circuit structure
AssigneeSTMicroelectronics S.r.l.
InventorsMarco Poles, Marco Pasotti
Life of this patent
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Abstract
There is disclosed a regulator for a charge pump having an input signal and generating an output signal at a value greater than the input signal. The charge pump comprises at least a capacitor and at least a device for charging and discharging the capacitor; the regulator comprises means having at the input said signal exiting the charge pump and a reference signal. Said means are able to generate a supply signal for said at least a device in response to the value of the difference between the output signal of the charge pump and said reference signal.
Claims21
A regulator for a charge pump having an input signal and generating an output signal at a value greater than the input signal, said charge pump having at least a capacitor and at least a device for charging and discharging the capacitor, the regulator comprising:
- means having at the input said output signal from the charge pump and a reference signal, said means configured to generate a supply signal for said at least a device in response to the value of the difference between said output signal of the charge pump and said reference signal.
A circuit structure, comprising:
- a charge pump and a regulator of the charge pump, said charge pump having an input signal and generating an output signal at a value greater than the input signal, said charge pump comprising at least a capacitor and at least one device for charging and discharging the capacitor, said regulator comprising means having at the input said output signal from the charge pump and a reference signal, said means adapted to generate a supply signal for said at least one device in response to the value of the difference between said output signal of the charge pump and said reference signal.
A regulator circuit for a charge pump having at least a first input and an output, the regulator circuit comprising:
- an operational amplifier comprising a first input coupled to the output of the charge pump, a second input adapted to receive a voltage reference value, and an output;
- and
- a switch having a control terminal coupled to the output of the operational amplifier, a first terminal coupled to a supply voltage, and a second terminal coupled to a ground reference potential and to the first input of the charge pump.
A circuit, comprising:
- a charge pump having an input adapted to receive an input signal and an output on which the charge pump generates an output signal having a voltage value greater than the input signal at the input of the charge pump;
- and
- a regulator circuit comprising:
- an operational amplifier comprising a first input coupled to the output of the charge pump, a second input adapted to receive a voltage reference value, and an output;
- and
- a switch having a control terminal coupled to the output of the operational amplifier, a first terminal coupled to a supply voltage, and a second terminal coupled to a ground reference potential and to the input of the charge pump.
Dependencies are inferred from the claim text.