US 12,191,764 B2 · Charge pump circuit and drive device

Abstract

A charge pump circuit includes a first capacitor including a first end supplied for a voltage, and a second end; a second capacitor including a third end supplied for a pulse signal, and a fourth end coupled to a node; a third capacitor including a fifth end supplied for the pulse signal, and sixth end; a first transistor including a seventh end coupled to the second end, an eighth end coupled to the node, and a first gate; a second transistor including a ninth end coupled to the first end, a tenth end coupled to the node, and a second gate; and a circuit including a first terminal coupled to the node, a second terminal coupled to the sixth end, a third terminal coupled to the first gate, and a fourth terminal coupled to the second gate.

Claims16

Dependent claims

A charge pump circuit comprising:

a first capacitor including a first end to which a first voltage is supplied;
a second capacitor including a first end to which a first pulse signal is supplied, and a second end coupled to a first node;
a third capacitor including a first end to which the first pulse signal is supplied;
a first transistor including a first end coupled to a second end of the first capacitor, and a second end coupled to the first node;
a second transistor including a first end coupled to the first end of the first capacitor, and a second end coupled to the first node;
and
a first circuit including a first input terminal coupled to the first node, a second input terminal coupled to a second end of the third capacitor, a first output terminal coupled to a gate of the first transistor, and a second output terminal coupled to a gate of the second transistor.

4 more elements

A drive device comprising a charge pump circuit, the charge pump circuit including:

a first capacitor including a first end to which a first voltage is supplied;
a second capacitor including a first end to which a first pulse signal is supplied, and a second end coupled to a first node;
a third capacitor including a first end to which the first pulse signal is supplied;
a first transistor including a first end coupled to a second end of the first capacitor, and a second end coupled to the first node;
a second transistor including a first end coupled to the first end of the first capacitor, and a second end coupled to the first node;
a first circuit including a first input terminal coupled to the first node, a second input terminal coupled to a second end of the third capacitor, a first output terminal coupled to a gate of the first transistor, and a second output terminal coupled to a gate of the second transistor;
and
an output terminal coupled to the second end of the first capacitor,
the drive device being configured to drive an external motor based on a voltage of the output terminal.

6 more elements

Dependencies are inferred from the claim text.

Charge pump circuit and drive device

Life of this patent

Charge pump circuit and drive device

Life of this patent

Abstract

Claims16