Charge pump circuit and method for operating a charge pump circuit
AssigneeNXP B.V.
InventorIvan Carlos Ribeiro do Nascimento
Life of this patent
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Abstract
Embodiments of a charge pump circuit and a method for operating a charge pump circuit are disclosed. In an embodiment, a charge pump circuit includes a charge pump configured to generate a charge pump output voltage, a transistor array including multiple transistor devices that includes at least one transistor device having a back gate terminal coupled to the charge pump output voltage, and a control circuit configured to control the charge pump output voltage so as to regulate the back bias voltage of the transistor devices within the transistor array. Other embodiments are also described.
Claims20
A charge pump circuit, the charge pump circuit comprising:
- a charge pump configured to generate a charge pump output voltage;
- a transistor array comprising a plurality of transistor devices, wherein the transistor devices includes at least one transistor device having a back gate terminal coupled to the charge pump output voltage, wherein the transistor array comprises:
- a first transistor device, wherein a gate terminal and a drain terminal of the first transistor device are connected to each other and to a first input terminal of the charge pump, and wherein a back gate terminal of the first transistor device is coupled to the charge pump output voltage;
- and
- a second transistor device, wherein a gate terminal and a drain terminal of the second transistor device are connected to each other and to a second input terminal of the charge pump, and wherein a back gate terminal and a source terminal of the second transistor device coupled to a fixed voltage that is different from the charge pump output voltage;
- and
- a control circuit configured to control the charge pump output voltage so as to regulate the back bias voltage of the first transistor device within the transistor array.
(canceled)
(canceled)
A charge pump circuit, the charge pump circuit comprising:
- a charge pump configured to generate a charge pump output voltage;
- a transistor array comprising a plurality of PMOS transistors, wherein a gate terminal and a source terminal of each of the PMOS transistors are connected to each other, wherein a back gate terminal of each of the PMOS transistors is coupled to the charge pump output voltage, and wherein the gate terminal and the source terminal of each of the transistors are coupled to a fixed voltage;
- and
- a control circuit configured to control the charge pump output voltage so as to regulate the back bias voltage of the PMOS transistors within the transistor array.
A method for operating a charge pump circuit, the method comprising:
- generating a charge pump output voltage;
- operating a transistor array of the charge pump circuit in response to the charge pump output voltage, wherein the transistor array comprises:
- a first transistor device, wherein a gate terminal and a drain terminal of the first transistor device are connected to each other and to a first input terminal of the charge pump, and wherein a back gate terminal of the first transistor device is coupled to the charge pump output voltage;
- and
- a second transistor device, wherein a gate terminal and a drain terminal of the second transistor device are connected to each other and to a second input terminal of the charge pump, and wherein a back gate terminal and a source terminal of the second transistor device are coupled to a fixed voltage that is different from the charge pump output voltage;
- and
- controlling the charge pump output voltage so as to regulate the back bias voltage of the first transistor device within the transistor array.
Dependencies are inferred from the claim text.