Oxide field trench (OFT) diode control device
AssigneeSTMicroelectronics (Tours) SAS
InventorFrederic Gautier
Life of this patent
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Abstract
A device includes a controllable current source connected between a first node and a first terminal coupled to a cathode of a controllable diode. A capacitor is connected between the first node and a second terminal coupled to an anode of the controllable diode. A first switch is connected between the first node and a third terminal coupled to a gate of the controllable diode. A second switch is connected between the second and third terminals. A first diode is connected between the third terminal and the second terminal, an anode of the first diode being preferably coupled to the third terminal.
Claims36
A device, comprising:
- an electronic device including:
- a controllable current source coupled between a first node and a first terminal, the first terminal being coupled to a cathode of a controllable diode;
- a capacitor coupled between the first node and a second terminal, the second terminal being coupled to an anode of the controllable diode;
- a first switch coupled between the first node and a third terminal, the third terminal being coupled to a gate of the controllable diode;
- a second switch coupled between the second terminal and the third terminal;
- and
- a first diode coupled between the third terminal and the second terminal, an anode of the first diode being coupled to the third terminal.
An electronic device, comprising:
- a transformer coil having a first terminal and a second terminal;
- a dipole having a cathode coupled to the second terminal of the transformer coil and an anode coupled to a reference node;
- and
- a capacitor coupled between the first terminal of the transformer coil and the reference node;
- wherein the dipole comprises:
- a controllable diode having an anode coupled to the reference node and a cathode coupled to the second terminal of the transformer coil;
- and
- a control device having inputs coupled to the second terminal of the transformer coil and the reference node, the control device configured to apply a control signal to a gate of the controllable diode based upon a difference between a potential at the cathode of the controllable diode and a potential at the anode of the controllable diode.
Dependencies are inferred from the claim text.