Method for controlling plurality of half-bridges and corresponding device

By assigning and decoding the key value in the half-bridge to determine the link relationship between the half-bridge, the problem of difficulty in selectively closing multiple half-bridges in the prior art is solved, and flexible and efficient fault handling in the case of failure is achieved.

CN120165559APending Publication Date: 2025-06-17STMICROELECTRONICS INT NV
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Patent Information

Application Number
CN202411830815.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-11-12
Filing Date
2024-12-12
Publication Date
2025-06-17

AI Technical Summary

Technical Problem

The prior art is difficult to select and close a specified subset of half-bridges among multiple half-bridges, especially in the event of a failure, and it is often necessary to close the entire multiple half-bridges or to close only the faulty half-bridge.

Method used

The desired subset of half-bridges is closed when an exception is detected by associating the value with each half-bridge connected to the pre-drive stage and grouping the half-bridges according to the associated value. The method includes storing the key values ​​in a register, decoding the key values ​​to determine the link relationship between the half-bridges, and closing the corresponding half-bridge according to the relationships.

Benefits of technology

The flexibility and efficiency of fault handling is improved by selectively closing a specified subset of half-bridges in the event of a failure without closing the entire multiple half-bridges or closing only the faulty half-bridge.

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Abstract

The invention relates to a method for controlling a plurality of half-bridges and a corresponding device. According to an embodiment, a method and circuit for controlling a plurality of half-bridges used to drive a load is provided. The circuit includes output terminals coupled to respective half-bridges, a register bank storing link information indicating which half-bridges are linked, and a decoder. The decoder detects an abnormal behavior in the first half-bridge, decodes link information of the first half-bridge to determine a linked half-bridge, and generates a shutdown signal for the first half-bridge and the linked half-bridge. The control unit outputs a closing signal to an appropriate half-bridge via an output terminal. The link information may include a key value or a bit pattern indicating a link between the half bridges. The decoder may use combinatorial logic to determine a half-bridge of the link based on the stored link information. This allows the linked half-bridge to be selectively closed when an abnormality is detected, thereby improving efficiency and reliability when driving a load such as a motor.
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