Ashish Razdan is a notable inventor based in Round Rock, TX (US). He has made significant contributions to the field of power supply technology, holding a total of 4 patents. His work focuses on enhancing the efficiency and reliability of power supply units.

Latest Patents

One of Ashish Razdan's latest patents is for a power supply unit with re-rush current limiting. This innovative power supply unit includes a rectifying module to rectify an alternating current (AC) voltage, a first bulk capacitor to receive the rectified AC voltage, and a first transistor coupled in series with the first bulk capacitor. The design features an AC input monitoring circuit that holds the first transistor in an OFF state during an AC voltage dropout. The current source adapts the gate voltage to control the first transistor when the AC voltage is re-applied, effectively limiting the re-rush current within the power supply unit.

Another significant patent is for a constant inrush current circuit for an AC input power supply unit. This power supply circuit includes a rectifier module to rectify an input voltage and a capacitor with a first terminal coupled to the rectifier module. The circuit features first and second transistors, with the first transistor coupling to a second terminal of the capacitor. A resistor is included to set an inrush current value in parallel with the second transistor. The design allows the power supply circuit to turn on the first transistor, enabling an inrush current to flow through the capacitor, first transistor, and resistor. After a delay, the second transistor is activated, reducing the inrush current to near zero and maintaining a low impedance path during steady-state operation.

Career Highlights

Ashish Razdan is currently employed at Dell Products Inc., where he continues to innovate in the field of power supply technology. His work has been instrumental in developing solutions that enhance the performance and reliability of power supply units.

Collaborations

Throughout his career, Ashish has collaborated with talented individuals such as Mehran Mirjafari and Lei Wang. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

Ashish Razdan is a prominent inventor whose work in power supply technology has led to several innovative patents. His contributions continue to impact the industry positively, showcasing his dedication to advancing electrical engineering.

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