WPG has been granted a patent for a power converter featuring an LLC converter, feedback circuit, and driving circuits. The design allows for efficient control of arm transistor groups based on feedback signals, enhancing overall performance. GlobalData’s report on WPG gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on WPG, was a key innovation area identified from patents. WPG's grant share as of February 2024 was 74%. Grant share is based on the ratio of number of grants to total number of patents.

Power converter with llc converter and feedback circuit

Source: United States Patent and Trademark Office (USPTO). Credit: WPG Holdings Ltd

A recently granted patent (Publication Number: US11923777B2) discloses a power converter comprising an LLC converter with a first arm transistor group and a second arm transistor group. The converter includes a feedback circuit that provides a feedback signal based on the current value of the LLC converter. A first driving circuit is connected to the feedback circuit and the first arm transistor group to drive the first arm transistor group and generate a control signal in response to the feedback signal. Additionally, a second driving circuit is linked to the first driving circuit and the second arm transistor group to drive the second arm transistor group based on the control signal.

Furthermore, the power converter described in the patent includes a resonant circuit connected between nodes of the first and second arm transistor groups within the LLC converter. The feedback circuit and the resonant circuit are inductively coupled to generate the feedback signal corresponding to the current value of the resonant circuit and adjust the phase of the feedback signal. The feedback circuit consists of feedback windings, a feedback resistor, and a feedback capacitor to convert the current signal into a sensing voltage signal and compensate for the phase difference, ensuring the accuracy of the feedback signal. Additionally, a coupling circuit is integrated to transmit the control signal between the driving circuits through inductive coupling, enhancing the efficiency and performance of the power converter.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.