US 10,511,273 B2 · Power transfer device using an oscillator

Abstract

A power transfer device includes an oscillator circuit having a first node, a second node, and a control terminal. The oscillator circuit includes a cascode circuit comprising transistors having a first conductivity type and a first breakdown voltage. The cascode circuit is coupled to the control terminal, the first node, and the second node. The oscillator circuit includes a latch circuit coupled between the cascode circuit and a first power supply node. The latch circuit includes cross-coupled transistors having the first conductivity type and a second breakdown voltage. The first breakdown voltage is greater than the second breakdown voltage. The oscillator circuit may be configured to develop a pseudo-differential signal on the first node and the second node. The pseudo-differential signal may have a peak voltage of at least three times a voltage level of an input DC signal on a second power supply node.

Claims20

Dependent claims

A power transfer device comprising:

an oscillator circuit comprising:
a first node;
a second node;
a control terminal;
a cascode circuit comprising transistors having a first conductivity type and a first breakdown voltage, the cascode circuit being coupled to the control terminal, the first node, and the second node;
and
a latch circuit coupled between the cascode circuit and a first power supply node, the latch circuit comprising cross-coupled transistors, each transistor of the cross-coupled transistors having the first conductivity type and a second breakdown voltage,
wherein the first breakdown voltage is across a first type of transistor terminal and a second type of transistor terminal,
wherein the second breakdown voltage is across the first type of transistor terminal and the second type of transistor terminal, and
wherein the first breakdown voltage is greater than the second breakdown voltage.

7 more elements

Dependencies are inferred from the claim text.

Power transfer device using an oscillator

Life of this patent

Power transfer device using an oscillator

Life of this patent

Abstract

Claims20