Monolithic Power Systems has been granted a patent for a power converter that includes a boost off time adaptive adjustment unit and a boost cycle short circuit protection module. The unit generates an off time control signal based on input and output voltages to regulate the off time of the boost cycle. When the power converter is operating normally, the off time changes in the opposite direction to the output voltage, but when a short-circuit fault occurs, the off time changes in the same direction as the output voltage. GlobalData’s report on Monolithic Power Systems gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Monolithic Power Systems, power MOSFET SMPS was a key innovation area identified from patents. Monolithic Power Systems's grant share as of September 2023 was 76%. Grant share is based on the ratio of number of grants to total number of patents.
Power converter with adaptive off time control during boost cycle
A recently granted patent (Publication Number: US11777405B2) describes a power converter with a boost off time adaptive adjustment unit. The power converter includes a switch module that regulates energy or power transmission from an input port to an output port in response to control signals from a control circuit. The control circuit includes the boost off time adaptive adjustment unit, which generates an off time control signal based on the input voltage at the input port and the output voltage at the output port.
During normal operation, the off time control signal is configured to regulate the off time of the boost cycle in the opposite direction to the output voltage. However, if a short-circuit fault occurs during the boost cycle, the off time control signal is configured to regulate the off time in the same direction as the output voltage. This adaptive adjustment helps protect the power converter from damage during short-circuit faults.
The boost off time adaptive adjustment unit further includes a boost off time control module and a boost cycle short circuit protection module. The boost off time control module adjusts the off time of the boost cycle based on the input voltage and the output voltage, while the boost cycle short circuit protection module provides a short circuit protection signal based on these voltages. If a short-circuit fault occurs, the short circuit protection signal acts on the boost off time control module to adjust the off time in the same direction as the output voltage.
The control circuit also includes a regulation module that performs calculations between a feedback signal indicative of the output voltage and a reference signal to provide a regulation signal. This regulation signal, along with the off time control signal, is used by a boost cycle control module to generate a boost cycle control signal.
The patent also describes the structure and components of the boost off time control module and the boost cycle short circuit protection module in detail. These components include a timing capacitor, controllable current sources, and a comparator.
Overall, this patent presents a power converter with an adaptive adjustment unit that can regulate the off time of the boost cycle based on the input and output voltages. This adaptive adjustment helps protect the power converter from short-circuit faults and ensures efficient operation during normal conditions.
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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.
