MUMBAI, India, Dec. 13 -- Intellectual Property India has published a patent application (202511077932 A) filed by National Institute Of Technology, New Delhi, on Aug. 15, for 'gain-phase margin (gpm)-based modified internal model controller (mimc) for robust control of dc-dc converters.'

Inventor(s) include Manoj Kumawat; Mukur Gupta; Nitin Gupta; and Man Mohan Garg.

The application for the patent was published on Dec. 12, under issue no. 50/2025.

According to the abstract released by the Intellectual Property India: "The disclosure relates to a control system (100) for DC-DC converters (104) integrating a Modified Internal Model Controller (MIMC) (106) with a Gain-Phase Margin (GPM)-based tuning unit (116), and a method (200) thereof. The tuning unit (116) generates a filter-setting signal from a desired phase margin and converter parameters including closed-loop time constant and system delay. The signal is provided to the MIMC (106) to adjust an internal filter parameter that influences the timing and shaping of control signals. The MIMC (106) generates pulse-width modulation signals delivered through a gate driver (118) to actuate a power semiconductor switch (108) of the converter (104), thereby regulating the output voltage under varying input voltage and load conditions. The control system (100) is applicable to multiple converter topologies, including buck, boost, buck-boost, bi-switch buck-boost, interleaved, and multi-phase converters, and is implementable on microcontrollers, DSPs, FPGAs, ASICs, or analogue circuits."

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