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：US20160118889A1

公开(公告)日：2016-04-28

申请号：US14631178

申请日：2015-02-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jianzhang XIE

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/1588 ,  H02M2001/0054 ,  Y02B70/1466 ,  Y02B70/1491

Abstract: A DC-to-DC converter includes an input voltage node, an inductor, and a switch coupled to the inductor and the input voltage node. More specifically, the switch has an on state and off state, wherein during the on state, current flowing through the inductor increases and the off state results in a decrease of the current flowing through the inductor via a driver coupled to the switch. The driver comprises a plurality of transistors and an adaptive voltage node, wherein a voltage level at the adaptive voltage node is to vary in accordance with the current flowing through the inductor so as to decrease a variation of the amount of time to turn off the switch.

Abstract translation: DC-DC转换器包括输入电压节点，电感器和耦合到电感器和输入电压节点的开关。 更具体地，开关具有导通状态和截止状态，其中在导通状态期间，流过电感器的电流增加，并且关断状态导致经由耦合到开关的驱动器流过电感器的电流的减小。 驱动器包括多个晶体管和自适应电压节点，其中自适应电压节点处的电压电平将根据流过电感器的电流而变化，以便减少关断开关的时间量的变化 。

公开(公告)号：US20200373841A1

公开(公告)日：2020-11-26

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：US20200266702A1

公开(公告)日：2020-08-20

申请号：US16711200

申请日：2019-12-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Wei ZHAO ,  Jianzhang XIE

IPC: H02M3/07 ,  H03K4/06

Abstract: Aspects of the disclosure provide for a circuit. In some examples, the circuit includes a first charging path including a first capacitor coupled to a first output node. The circuit further includes a second charging path comprising a first switch and a second capacitor. The circuit further includes a third charging path comprising a second switch and a third capacitor. The circuit further includes a first discharging path comprising the second capacitor, a third switch coupled between the second charging path and a second output node, and a fourth switch coupled between the second charging path and a fourth node. The circuit further includes a second discharging path comprising the third capacitor, a fifth switch coupled between the third charging path and the second output node, and a sixth switch coupled between the third node and the fourth node.