Daniel A Mavencamp

7843265, Nov 30, 2010

Dec 1, 2008

12/325833

Daniel Andrew Mavencamp - Dallas TX, US

Texas Instruments Incorporated - Dallas TX

H03F 3/26

330264

Power amplifiers with reduced idle currents are described. In some examples, a power amplifier includes a driver configured to generate a control signal based on an input signal. The power amplifier also includes a first output transistor configured to selectively provide an output signal via an output channel that has a resistance based on the control signal, and a channel adjuster configured to generate several digital signals based on the control signal. A composite switch, which includes several segment transistors, is included to selectively increase or decrease the output channel resistance based on the digital signals.

8174248, May 8, 2012

May 16, 2009

12/467265

Daniel Mavencamp - Dallas TX, US
Dal Yihong - Plano TX, US
Abdelhalim Alsharqawi - Richardson TX, US
Steve Martindell - Richardson TX, US

Texas Instruments Incorporated - Dallas TX

G05F 1/613
G05F 1/40

323225, 323271

Systems and methods for bit stuffing pulse width modulation are provided. Example embodiments of the systems and methods of bit stuffing pulse width modulation disclosed herein may allow for a significant reduction in the size of the bootstrap capacitor while giving up only a small percentage of output drive, and reduce die space. Included in such systems and methods is the ability to digitally detect inactivity on the PMW signals for a class D power amplifier, and to digitally insert small charge pulses at a fairly low repetition rate relative to the normal switching frequency. The low repetition rate may preserve the maximum output power while still allowing enough charge to transfer to the bootstrap capacitor.

20210336468, Oct 28, 2021

Jul 2, 2021

17/366535

- Dallas TX, US
Siew Kuok HOON - Plano TX, US
Daniel Andrew MAVENCAMP - Rockwall TX, US
Jairo Daniel OLIVARES - Dallas TX, US

H02J 7/00
H02M 3/158
G01R 19/165

A device includes a battery current sense circuit configured to generate a battery current feedback voltage based on a current provided to a battery, a current regulation feedback loop configured to regulate the current provided to the battery based on the battery current feedback voltage and a configurable battery current reference voltage, and a precharge regulation feedback loop configured to regulate the current provided to the battery based on the battery current feedback voltage and a configurable precharge reference voltage. The device also includes a processor configured to set the battery current reference voltage to a first value and set the precharge current reference voltage to a second value. The first value is less than the second value during a transition state.

20200313444, Oct 1, 2020

Mar 29, 2019

16/370151

- Dallas TX, US
Rohit BHAN - Plano TX, US
Thomas VERMEER - Plano TX, US
Daniel MAVENCAMP - Rockwall TX, US

H02J 7/00
H03M 1/00
G01R 19/165

Aspects of the present disclosure provide for circuit. In at least some examples, the circuit includes a controller, a current source, a switch, and a digital-to-analog converter (DAC). The controller includes an analog-to-digital converter (ADC) having an input and an output, a first register, and a second register coupled to the output of the ADC. The switch is coupled between an output of the current source and a first node and has a control terminal coupled to the controller. The first node is coupled to the input of the ADC and is configured to couple to a resistor. The DAC has an input coupled to the controller and an output configured to couple to a battery.

20190379228, Dec 12, 2019

Jan 28, 2019

16/259762

- Dallas TX, US
Siew Kuok HOON - Plano TX, US
Daniel Andrew MAVENCAMP - Rockwall TX, US
Jairo Daniel OLIVARES - Dallas TX, US

H02J 7/00
G01R 19/165
H02M 3/158

A device includes a battery current sense circuit configured to generate a battery current feedback voltage based on a current provided to a battery, a current regulation feedback loop configured to regulate the current provided to the battery based on the battery current feedback voltage and a configurable battery current reference voltage, and a precharge regulation feedback loop configured to regulate the current provided to the battery based on the battery current feedback voltage and a configurable precharge reference voltage. The device also includes a processor configured to set the battery current reference voltage to a first value and set the precharge current reference voltage to a second value. The first value is less than the second value during a transition state.

20170207780, Jul 20, 2017

Sep 21, 2016

15/272035

- Dallas TX, US
Daniel Andrew Mavencamp - Rockwall TX, US
Wang Li - Allen TX, US

H03K 5/19
H03K 17/687

A system that can include a detector that can monitor a voltage at an input of a transistor device over a period of time and provide a signal having a value representative of a capacitance between the input and an output of the transistor device. The system can further include a driver that can have a programmable drive strength and be coupled to input of the transistor device to drive the transistor device at the input thereof. The system can further include a controller that can configure the driver based on the signal to drive the transistor device with a corresponding drive strength.