Robert Douglas Christie

This inventor holds 9 USPTO granted patents and 1 published patent application and 4 EPO patents. Top assignee: Allegro Microsystems, LLC. Active years: 2010-2021.

USPTO Granted Patents = 9 (Patent Applications = 1)

% Patents Active = 100.0

EPO Patents = 4 (Patent Applications = 1)

Average Co-Inventor Count = 3.4

ph-index = 5

Forward Citations = 85(Granted Patents)

Company Filing History:

9 out of 997

Allegro Microsystems, LLC

patents

Years Active: 2010-2021

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10924052 - Motor control system with phase current polarity detection (2021-02-16),

2. 10819257 - Reconstruction of an average motor supply current using phase current measurement (2020-10-27),

3. 10511223 - Voltage regulator having boost and charge pump functionality (2019-12-17),

4. 9935452 - Circuits and techniques for signaling between devices (2018-04-03),

5. 9780706 - Motor control current zero crossing detector (2017-10-03),

6. 9735773 - Systems and methods for sensing current through a low-side field effect transistor (2017-08-15),

7. 9496708 - Electric motor drive isolation circuit (2016-11-15),

8. 9294084 - Multi-stage slew rate control profiling for transistor drive applications (2016-03-22),

9. 7649325 - Methods and apparatus for switching regulator control (2010-01-19),

Title: Innovations of Robert Douglas Christie

Introduction

Robert Douglas Christie is a notable inventor based in Fife, GB. He has made significant contributions to the field of motor control systems, holding a total of 9 patents. His work focuses on enhancing the efficiency and functionality of motor systems, which are crucial in various applications.

Latest Patents

One of Christie's latest patents is a "Motor control system with phase current polarity detection." This innovative system is designed to drive a load, such as a multi-phase motor, using a motor driver with multiple switches. The system includes a polarity detection circuit that identifies the current polarity in the motor's phase coils, allowing for improved control over the motor's operation. The controller adjusts the duty cycle of pulse width modulated (PWM) output control signals based on the detected polarity, optimizing the voltage applied to the motor's phase coils.

Another significant patent is "Reconstruction of an average motor supply current using phase current measurement." This invention involves a current sensor that measures the current through the motor. A converter samples the sensor's output and converts it into digital values, which are then used by a controller to compute the average supply current to the motor. This method enhances the accuracy of current measurements, leading to better motor performance.

Career Highlights

Robert Douglas Christie is currently employed at Allegro Microsystems, LLC, where he continues to innovate in the field of motor control technologies. His expertise and dedication have made him a valuable asset to the company.

Collaborations

Christie has collaborated with several talented individuals, including James McIntosh and Gianluca Allegrini. These partnerships have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Robert Douglas Christie is a distinguished inventor whose work in motor control systems has led to significant advancements in the field. His innovative patents and collaborations reflect his commitment to enhancing technology and improving motor efficiency.