Charge pump regulator and circuit structure
AssigneeSTMicroelectronics S.r.l.
InventorsMarco Poles, Marco Pasotti
Life of this patent
Estimating the term…
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.
Claims23
A regulator for a charge pump having a supply input and configured to generate a boosted electrical output quantity, said charge pump having a capacitor and a device configured to charge and discharge the capacitor, the regulator comprising:
- an input terminal configured to receive the boosted electrical output quantity from the charge pump;
- and
- means for generating an electrical supply quantity based on a difference between said boosted electrical output quantity and a reference electrical quantity, and for providing said electrical supply quantity to the supply input of the charge pump.
A circuit structure, comprising:
- a charge pump configured to generate a boosted electrical output quantity, said charge pump comprising a supply input, a capacitor, and a device configured to charge and discharge the capacitor;
- and
- a regulator configured to regulate the charge pump, said regulator comprising:
- an input terminal configured to receive the boosted electrical output quantity;
- and
- means, having a first input coupled to receive said boosted electrical output quantity from the charge pump and a second input coupled to receive an electrical reference quantity, for generating an electrical supply quantity based on a difference between said boosted electrical output quantity and said electrical reference quantity and for providing said electrical supply quantity to the supply input of the charge pump.
A regulator circuit for a charge pump having an 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 configured 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 terminal, and a second terminal coupled to a ground terminal and to the input of the charge pump.
A circuit, comprising:
- a charge pump having an input configured to receive an electrical input quantity and an output, and configured to generate a boosted output voltage;
- 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 terminal and to the input of the charge pump.
A regulator for a charge pump having an input and configured to generate a boosted electrical output quantity, said charge pump having a capacitor and a device configured to charge and discharge the capacitor, the regulator comprising:
- an input terminal configured to receive the boosted electrical output quantity from the charge pump;
- and
- means for generating an electrical quantity based on a difference between said boosted electrical output quantity and a reference electrical quantity, and for providing said electrical supply quantity to the input of the charge pump, wherein said means comprises:
- an operational amplifier suitable for amplifying the difference between said boosted electrical output quantity and the reference electrical quantity, and
- a transistor having a control terminal coupled to an output of said operational amplifier, a first conduction terminal configured to receive a supply voltage, and a second conduction terminal configured to provide said electrical quantity.
A circuit structure, comprising:
- a charge pump configured to generate a boosted electrical output quantity, said charge pump comprising an input, a capacitor, and a device configured to charge and discharge the capacitor;
- and
- a regulator configured to regulate the charge pump, said regulator comprising:
- an input terminal configured to receive the boosted electrical output quantity;
- and
- means, having a first input coupled to receive said boosted electrical output quantity from the charge pump and a second input coupled to receive an electrical reference quantity, for generating an electrical quantity based on a difference between said boosted electrical output quantity and said electrical reference quantity and for providing said electrical quantity to the input of the charge pump, wherein said means comprises:
- an operational amplifier suitable for amplifying the difference between said boosted electrical output quantity and said electrical reference quantity;
- and
- a transistor having a control terminal coupled to an output of said operational amplifier, a first conduction terminal configured to receive a supply voltage, and a second conduction terminal configured to provide said electrical quantity.
Dependencies are inferred from the claim text.