Back to results
US 9,312,848 B2Granted
Glitch suppression in an amplifier
AssigneeQUALCOMM Incorporated
InventorsXinwang Zhang, Vijayakumar Dhanasekaran, Le Wang, Ankit Srivastava
Life of this patent
Estimating the term…
Abstract
A driver circuit includes detectors responsive to the operating region that a driven switch is operating in. The driver circuit is operative to drive the gate of the driven switch at a speed responsive to the output of the detectors.
Claims20
A circuit comprising:
- a transistor device having first and second terminals and a control terminal, the first terminal for a connection to an input voltage, the second terminal for a connection to an electrical load;
- and
- a driver circuit connected to the transistor device and operative to drive the transistor device in response to an input signal provided to the driver circuit, the driver circuit comprising:
- a first switch having first and second terminals, the first terminal connected to the control terminal of the transistor device, the first switch further having a control terminal for a connection to a source of the input signal;
- a plurality of second switches arranged in parallel and connected between a first node and a second node, the first node connected to the second terminal of the first switch, the second node connectable to a first voltage potential;
- and
- a region detector circuit connected to the transistor device, the region detector circuit operative to generate output signals responsive to an operating region of the transistor device,
- the second switches connected to the region detector circuit, the output signals of the region detector circuit operative to control one or more of the second switches.
5 more elements
A circuit comprising:
- first means for driving a control terminal of a transistor device;
- second means, connected to the transistor device, for generating one or more control signals responsive to an operating region in which the transistor device is operating;
- third means, connected to the first means and to the second means, for varying a current flow through the first means responsive to the one or more control signals from the second means,
- wherein the second means generates a first control signal in response the transistor device transitioning from a first operating region to a second operating region and generates a second control signal in response the transistor device transitioning from the second operating region to a third operating region.
1 more element
A circuit comprising:
- first and second output devices for a connection to a load;
- a first driver connected to a control terminal of the first output device;
- a second driver connected to a control terminal of the second output device;
- a plurality of switches arranged in parallel and connected between a first node and a second node, the first node connected to the second terminal of the driver, the second node connectable to a first voltage potential;
- a detector circuit connected to the first output device, the detector circuit operative to generate output signals responsive to an operating region of the first output device, the switches connected to the detector circuit, the output signals of the detector circuit operative to control one or more of the switches;
- and
- a buffer connected to the second driver and receiving one of the output signals from the detector circuit, the buffer operative to enable the second driver in response to said one of the output signals.
4 more elements
Dependencies are inferred from the claim text.