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US 2023/0420975 A1Published application
Power supply circuit
AssigneeChengdu Monolithic Power Systems Co., Ltd.
InventorsKai Huang, Lei Li
Life of this patent
Estimating the term…
Abstract
A power supply circuit that may be operated in a pre-charge mode or a switch-charge mode to provide a charging current. In the pre-charge mode, a current sense transistor of the power supply circuit may be operating to sense the charging current and to provide a current sense signal indicative of the charging current, while a current control transistor of the power supply circuit may be operating to control the charging current based on the current sense signal.
Claims29
A power supply circuit, comprising:
- a bus terminal, coupled to a power supply input terminal;
- a switch circuit having at least one switch, coupled between a bias terminal and a reference ground;
- a current sense circuit having a current sense transistor, coupled between the bus terminal and the bias terminal;
- and
- a current control circuit having a current control transistor, coupled between the bias terminal and a storage terminal.
2 more elements
A power supply circuit, comprising:
- a bus terminal, configured as an output terminal for providing a bus voltage;
- a storage terminal, configured as an output terminal for providing a charging current;
- a bias terminal;
- a switch circuit having at least one switch, coupled between the bias terminal and a reference ground;
- a current control circuit having a current control transistor, coupled between the bias terminal and the storage terminal;
- and
- a current sense circuit having a current sense transistor, coupled between the bus terminal and the bias terminal.
4 more elements
Dependencies are inferred from the claim text.