公开(公告)号：US11615736B2

公开(公告)日：2023-03-28

申请号：US17183674

申请日：2021-02-24

Applicant: Texas Instruments Incorporated

Inventor： Shang Ding ,  Huibo Zhong ,  Yang Wang ,  Haibin Shao ,  Mingming Hou ,  Yongjie Huang ,  Jing Zhang

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3208 ,  G09G3/3225

Abstract: A light-emitting diode (LED) display driver is operable to drive LEDs of an LED display and has a display interval with sub-periods and a blank time, each sub-period having multiple segments. The LED display driver includes: a data input; LED channel outputs adapted to be coupled to LEDs to drive the LEDs; and blank time distribution circuitry coupled between the data input and the LED channel outputs. The blank time distribution circuitry operable to distribute the blank time as blank time portions added to at least some of the sub-periods. Each blank time portion is smaller than a duration of each sub-period.

公开(公告)号：US20200161293A1

公开(公告)日：2020-05-21

申请号：US16751491

申请日：2020-01-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Qingjie Ma ,  Wei Xu ,  Jingwei Xu ,  Yang Wang

IPC: H01L27/02 ,  H03K17/081 ,  H03K17/0812

Abstract: In a described example, an apparatus includes: a first metal oxide semiconductor field effect transistor (MOSFET) coupled between a first input terminal for receiving a supply voltage and an output terminal for coupling to a load, and having a first gate terminal; an enable terminal coupled to the first gate terminal for receiving an enable signal; a first current mirror coupled between the first input terminal and a first terminal of a first series resistor and having an input coupled to the first gate terminal; and a second MOSFET coupled between the first gate terminal and the output terminal, and having a second gate terminal coupled to the first terminal of the first series resistor, the first series resistor having a second terminal coupled to the output terminal.

公开(公告)号：US10088856B2

公开(公告)日：2018-10-02

申请号：US15588089

申请日：2017-05-05

Applicant: Texas Instruments Incorporated

Inventor： Alvin Xu ,  Qingjie Ma ,  Yang Wang ,  Yan He ,  Jun Ma ,  Zhenghao Cui ,  Jingwei Xu

IPC: G05F1/56 ,  G05F1/567 ,  G05F3/30

Abstract: Methods, apparatus, systems and articles of manufacture for negative output voltage active clamping using a floating bandgap reference and temperature compensation are disclosed. An example load switch includes a floating bandgap reference circuit to generate a bandgap reference voltage. A resistor divider is to generate a resistor divider voltage. A temperature compensator to apply a temperature compensation current to the resistor divider to create a temperature compensated resistor divider voltage. A power transistor is to be enabled when the temperature compensated resistor divider voltage is less than the bandgap reference voltage. The example load switch can work under negative output voltage clamping and get better accuracy drain to source clamped voltage of power transistor for inductive load condition.

公开(公告)号：US11386834B2

公开(公告)日：2022-07-12

申请号：US17122792

申请日：2020-12-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yang Wang ,  Huibo Zhong ,  Haibin Shao ,  Yan He ,  Shang Ding ,  Yongxiang Zhang

IPC: G09G3/32

Abstract: A light-emitting diode (LED) display driver circuit includes: a set of scan lines, each scan line having a respective switch; a set of channels coupled to each scan line of the set of scan lines; and a scan line controller coupled to each respective switch of the set of scan lines, the scan line controller configured to provide a programmable sequence of control signals to respective switches of the set of scan lines.

公开(公告)号：US20210104515A1

公开(公告)日：2021-04-08

申请号：US17122682

申请日：2020-12-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Qingjie Ma ,  Wei Xu ,  Jingwei Xu ,  Yang Wang

IPC: H01L27/02 ,  H03K17/0812 ,  H03K17/081

Abstract: In a described example, an apparatus includes: a first metal oxide semiconductor field effect transistor (MOSFET) coupled between a first input terminal for receiving a supply voltage and an output terminal for coupling to a load, and having a first gate terminal; an enable terminal coupled to the first gate terminal for receiving an enable signal; a first current mirror coupled between the first input terminal and a first terminal of a first series resistor and having an input coupled to the first gate terminal; and a second MOSFET coupled between the first gate terminal and the output terminal, and having a second gate terminal coupled to the first terminal of the first series resistor, the first series resistor having a second terminal coupled to the output terminal.

公开(公告)号：US11367719B2

公开(公告)日：2022-06-21

申请号：US17122682

申请日：2020-12-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Qingjie Ma ,  Wei Xu ,  Jingwei Xu ,  Yang Wang

IPC: H01L27/02 ,  H03K17/0812 ,  H03K17/081 ,  H03K17/08

Abstract: In a described example, an apparatus includes: a first metal oxide semiconductor field effect transistor (MOSFET) coupled between a first input terminal for receiving a supply voltage and an output terminal for coupling to a load, and having a first gate terminal; an enable terminal coupled to the first gate terminal for receiving an enable signal; a first current mirror coupled between the first input terminal and a first terminal of a first series resistor and having an input coupled to the first gate terminal; and a second MOSFET coupled between the first gate terminal and the output terminal, and having a second gate terminal coupled to the first terminal of the first series resistor, the first series resistor having a second terminal coupled to the output terminal.

公开(公告)号：US10896905B2

公开(公告)日：2021-01-19

申请号：US16751491

申请日：2020-01-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Qingjie Ma ,  Wei Xu ,  Jingwei Xu ,  Yang Wang

IPC: H03K17/0812 ,  H01L27/02 ,  H03K17/081 ,  H03K17/08

Abstract: In a described example, an apparatus includes: a first metal oxide semiconductor field effect transistor (MOSFET) coupled between a first input terminal for receiving a supply voltage and an output terminal for coupling to a load, and having a first gate terminal; an enable terminal coupled to the first gate terminal for receiving an enable signal; a first current mirror coupled between the first input terminal and a first terminal of a first series resistor and having an input coupled to the first gate terminal; and a second MOSFET coupled between the first gate terminal and the output terminal, and having a second gate terminal coupled to the first terminal of the first series resistor, the first series resistor having a second terminal coupled to the output terminal.

公开(公告)号：US11659638B2

公开(公告)日：2023-05-23

申请号：US17463239

申请日：2021-08-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yan He ,  Yang Wang ,  Haibin Shao ,  Shang Ding ,  Wei Xu ,  Qingjie Ma

IPC: H05B45/325 ,  H05B45/34 ,  G05B23/02 ,  G09G3/32

CPC classification number: H05B45/325 ,  G05B23/0218 ,  G09G3/32 ,  H05B45/34 ,  G09G2310/0267 ,  G09G2320/0219

Abstract: A light emitting diode (LED) matrix driver includes a scan line switch coupled to a scan line of an LED matrix and adapted to be coupled to a signal ground; a first voltage clamp coupled to the scan line switch and the scan line; and a second voltage clamp coupled to the scan line.

公开(公告)号：US10586791B2

公开(公告)日：2020-03-10

申请号：US16035007

申请日：2018-07-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Qingjie Ma ,  Wei Xu ,  Jingwei Xu ,  Yang Wang

IPC: H03K17/0812 ,  H01L27/02 ,  H03K17/081 ,  H03K17/08

Abstract: In a described example, an apparatus includes: a first metal oxide semiconductor field effect transistor (MOSFET) coupled between a first input terminal for receiving a supply voltage and an output terminal for coupling to a load, and having a first gate terminal; an enable terminal coupled to the first gate terminal for receiving an enable signal; a first current mirror coupled between the first input terminal and a first terminal of a first series resistor and having an input coupled to the first gate terminal; and a second MOSFET coupled between the first gate terminal and the output terminal, and having a second gate terminal coupled to the first terminal of the first series resistor, the first series resistor having a second terminal coupled to the output terminal.

公开(公告)号：US20190279977A1

公开(公告)日：2019-09-12

申请号：US16035007

申请日：2018-07-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Qingjie Ma ,  Wei Xu ,  Jingwei Xu ,  Yang Wang

IPC: H01L27/02 ,  H03K17/081 ,  H03K17/0812

Abstract: In a described example, an apparatus includes: a first metal oxide semiconductor field effect transistor (MOSFET) coupled between a first input terminal for receiving a supply voltage and an output terminal for coupling to a load, and having a first gate terminal; an enable terminal coupled to the first gate terminal for receiving an enable signal; a first current mirror coupled between the first input terminal and a first terminal of a first series resistor and having an input coupled to the first gate terminal; and a second MOSFET coupled between the first gate terminal and the output terminal, and having a second gate terminal coupled to the first terminal of the first series resistor, the first series resistor having a second terminal coupled to the output terminal.