公开(公告)号：US11418119B2

公开(公告)日：2022-08-16

申请号：US16794110

申请日：2020-02-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jianzhang Xie ,  Wei Zhao ,  Yihan Yao ,  Yue Wu

IPC: H02M3/158

Abstract: Aspects of the disclosure provide for a circuit. In some examples, the circuit includes a timing circuit and a state machine circuit. The timing circuit determines a relationship between a duty cycle of a power converter and a threshold value. The state machine circuit is coupled to the timing circuit and includes a plurality of states including a buck state, a boost state, and a buck-boost state. The state machine circuit transitions among the plurality of states according to time domain control and voltage domain control, based at least partially on the determined relationship between the duty cycle and the threshold value, transitions among the states according to the time domain control when the time domain control indicates an exit from the buck-boost state, and transitions among the states according to the voltage domain control when the voltage domain control indicates the exit from a buck-boost state.

公开(公告)号：US20210211052A1

公开(公告)日：2021-07-08

申请号：US16877785

申请日：2020-05-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wei ZHAO ,  Jianzhang XIE ,  Yihan Yao ,  Xufeng Wu

IPC: H02M3/158 ,  H02J7/02 ,  H02M1/08

Abstract: A system includes an input voltage node configured to provide an input voltage (VIN). The system also includes a load (RLOAD) and a switching converter coupled between the input voltage node and the load (RLOAD). The switching converter is configured to provide an output voltage (VOUT) to the load (RLOAD) based on the input voltage (VIN). The switching converter includes gate driver circuitry and a current mode control circuit coupled to the gate driver circuitry. The current mode control circuit is configured to output control signals to the gate driver circuitry in accordance with different modes of operation, wherein the current mode control circuit is configured to adjust a threshold (IPSM*) used to switch between a discontinuous conduction mode (DCM) and a power save mode (PSM).

公开(公告)号：US10243463B2

公开(公告)日：2019-03-26

申请号：US15729366

申请日：2017-10-10

Applicant: Texas Instruments Incorporated

Inventor： Yueming Sun ,  Yihan Yao

IPC: H02M3/158

Abstract: An apparatus comprises a voltage supply configured to provide an input voltage, a buck-boost converter coupled to the voltage supply and comprising an inductor, and a buck-boost controller coupled to the power supply and the buck-boost converter. The buck-boost controller comprises a mode controller coupled to the buck-boost converter and a comparator coupled to the mode controller and the buck-boost converter. The comparator is configured to compare an error signal based on an output voltage of the buck boost-converter to an output current of the inductor to produce a control signal. The mode controller is configured to control the output voltage at least in part according to the control signal.