Power Integrations has been granted a patent for a primary controller in a power converter. The controller generates signals to control the timing of power switch operations, improving efficiency. By adjusting delay times based on input voltage levels, energy transfer is optimized. GlobalData’s report on Power Integrations gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Power Integrations, Quantum dot devices was a key innovation area identified from patents. Power Integrations's grant share as of January 2024 was 65%. Grant share is based on the ratio of number of grants to total number of patents.

Controller for power converter with adjustable delay between switches

Source: United States Patent and Trademark Office (USPTO). Credit: Power Integrations Inc

The granted patent (Publication Number: US11888405B2) discloses a controller designed for use in a power converter. The controller includes a control circuit that receives an input line voltage sense signal and generates a control signal based on this input. The control signal determines the delay time between turning OFF a clamp switch and turning ON a power switch of the power converter. The controller operates in two modes - continuous conduction mode (CCM) and discontinuous conduction mode (DCM), with different delay times for each mode. Additionally, the controller features an enable circuit, a delay circuit, and a drive circuit to facilitate the efficient transfer of energy within the power converter.

Furthermore, the primary controller described in the patent includes additional features such as a mode detection circuit, a zero-crossing detector, and multiple switches and comparators to accurately determine the mode of operation of the power converter. The primary controller generates different operation signals based on the mode detected, enabling the control circuit to adjust the delay time accordingly. By incorporating these components and functionalities, the controller aims to optimize the performance and efficiency of the power converter by effectively managing the timing of the power and clamp switches based on the input voltage levels and operational mode of the converter.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.