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1. 发明授权

US10312899B2 Over-voltage clamp circuit 有权
公开(公告)号：US10312899B2
公开(公告)日：2019-06-04
申请号：US15916979
申请日：2018-03-09
申请人： Texas Instruments Incorporated
发明人： Subrato Roy , Dattatreya Baragur Suryanarayana
IPC分类号： H03K17/082 , H03K17/687 , H02M3/337 , H02M3/335
摘要： An apparatus includes an output transistor device configured to control an output voltage of an output node in response to a control signal and an input voltage. A current sensor is configured to sense an output current supplied from the output node. A feedback converter is configured to convert the sensed output current to a feedback signal that tracks the output voltage of the output node. The feedback converter is further configured to set a clamping threshold. A gate control circuit is configured to generate the control signal in response to the feedback signal. The gate control circuit is configured to clamp the output voltage of the output node via the control signal based on the clamping threshold.

2. 发明申请

US20190245530A1 OVER-VOLTAGE CLAMP CIRCUIT 审中-公开
公开(公告)号：US20190245530A1
公开(公告)日：2019-08-08
申请号：US16386991
申请日：2019-04-17
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Subrato Roy , Dattatreya Baragur Suryanarayana
IPC分类号： H03K17/082 , H03K17/687
CPC分类号： H03K17/0822 , H02M3/335 , H02M3/33507 , H02M3/337 , H03K17/687 , H03K2217/0027
摘要： An apparatus includes an output transistor device configured to control an output voltage of an output node in response to a control signal and an input voltage. A current sensor is configured to sense an output current supplied from the output node. A feedback converter is configured to convert the sensed output current to a feedback signal that tracks the output voltage of the output node. The feedback converter is further configured to set a clamping threshold. A gate control circuit is configured to generate the control signal in response to the feedback signal. The gate control circuit is configured to clamp the output voltage of the output node via the control signal based on the clamping threshold.

3. 发明申请

US20180287602A1 CURRENT SENSING AND CONTROL FOR A TRANSISTOR POWER SWITCH 审中-公开
公开(公告)号：US20180287602A1
公开(公告)日：2018-10-04
申请号：US16001518
申请日：2018-06-06
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Ankur Chauhan , Sudheer Prasad , Md. Abidur Rahman , Subrato Roy
IPC分类号： H03K17/082 , H01L23/525 , H03K17/687 , G01R19/00
CPC分类号： H03K17/0822 , G01R19/0092 , H01L23/5256 , H03K17/687 , H03K2217/0027 , H03K2217/0054
摘要： An apparatus includes: a first power transistor having a first current conduction path coupled between an input for receiving a supply voltage and a node and a first gate terminal coupled to a first gate control signal; a second power transistor having a second current conduction path coupled between the node and an output terminal for supplying a load current to a load; and a second gate terminal coupled to a second gate control signal; and a current sense transistor having a third gate terminal coupled to the first gate control signal, and outputting a sense current. The apparatus further includes: a differential amplifier having an output signal, and a feedback transistor having a gate terminal coupled to the output signal of the differential amplifier; and a resistor coupled between a monitor node and ground.

4. 发明授权

US09496007B2 Method and apparatus for generating piece-wise linear regulated supply 有权
标题翻译：用于产生分段线性调节电源的方法和装置
公开(公告)号：US09496007B2
公开(公告)日：2016-11-15
申请号：US14503545
申请日：2014-10-01
申请人： Texas Instruments Incorporated
发明人： Sumantra Seth , Subrato Roy , Deepak Verma
IPC分类号： G05F1/575 , G11C5/14 , H01C1/16
CPC分类号： G11C5/147 , H01C1/16
摘要： The disclosure provides a voltage regulator for generating piece-wise linear regulated supply voltage. The voltage regulator includes a first clamp circuit that receives a reference voltage and an analog supply voltage. A second clamp circuit receives the reference voltage. A voltage divider circuit is coupled to the first clamp circuit and the second clamp circuit. The voltage divider circuit receives a peripheral supply voltage and generates a regulated supply voltage.
摘要翻译：本公开提供了用于产生分段线性稳压电源电压的电压调节器。电压调节器包括接收参考电压和模拟电源电压的第一钳位电路。第二钳位电路接收参考电压。分压器电路耦合到第一钳位电路和第二钳位电路。分压器电路接收外围电源电压并产生稳定的电源电压。

5. 发明申请

US20200028345A1 METHODS AND APPARATUS TO PREVENT UNDESIRED TRIGGERING OF SHORT CIRCUIT OR OVER CURRENT PROTECTION 审中-公开
公开(公告)号：US20200028345A1
公开(公告)日：2020-01-23
申请号：US16428493
申请日：2019-05-31
申请人： Texas Instruments Incorporated
发明人： Subrato Roy , Ankur Chauhan , Vishal Gupta
IPC分类号： H02H1/04 , H02H1/00 , H02H3/28 , H02H7/20
摘要： Methods, apparatus, systems and articles of manufacture are disclosed for preventing undesired triggering of short circuit or over current protection. An example apparatus includes an output terminal; a voltage detection device coupled to a voltage detection input terminal and the output terminal and including a voltage detection output coupled to a logic gate first input terminal; a pulse extender coupled between a logic gate output and a selecting node; a multiplexer coupled to the selecting node and configured to be coupled to a first protection circuit, a second protection circuit, and a driver; and a switch coupled between an input terminal and the output terminal and including a switch gate terminal coupled to the driver.

6. 发明授权

US10348280B2 Controlling current limits in current limiting circuits 有权
公开(公告)号：US10348280B2
公开(公告)日：2019-07-09
申请号：US15857135
申请日：2017-12-28
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Ankur Chauhan , Subrato Roy
IPC分类号： G01R19/00 , G01R1/30 , H02H5/04 , G05F1/00 , G05F3/16 , G01K3/10 , H03K5/08 , G05F1/46 , G05F1/573
摘要： An example current limiting apparatus comprises a first transistor to carry a first current; a sense transistor coupled to the first transistor, the sense transistor to carry a sense current that is a function of the first current; a first amplifier coupled to the first transistor and the sense transistor, the amplifier to achieve a common voltage potential on terminals of the first and the sense transistors; a second amplifier coupled to the first amplifier and the sense transistor, the second amplifier to control the first and sense transistors based on the sense current; and a circuit coupled to the first and second amplifiers, the circuit to control an input to the second amplifier based on an input to the first amplifier such that a current limit of the first transistor remains below a programmed current limit of the first transistor.

7. 发明申请

US20160274616A1 BANDGAP VOLTAGE GENERATION 有权
标题翻译：带状电压发生器
公开(公告)号：US20160274616A1
公开(公告)日：2016-09-22
申请号：US14664803
申请日：2015-03-20
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Subrato Roy
IPC分类号： G05F3/26
CPC分类号： G05F3/267
摘要： A bandgap reference voltage generator includes a first and a second bipolar junction transistor, which is biased at a lower current per unit emitter area than that of the first transistor. Accordingly, the base to emitter voltage of first transistor is higher than that of the second transistor and a delta VBE is generated at the base of the first transistor with respect to the base of the second transistor. A first voltage divider generates a divided voltage of a VBE (fractional VBE) at a first center node. The fractional VBE is added to the VBE of the first transistor and subtracted from the VBE of the second transistor by closed loop feedback action to generate a temperature compensated reference voltage at the base of second transistor. The reference voltage can be amplified to higher voltage levels by using a resistor divider at the base of second transistor.
摘要翻译：带隙参考电压发生器包括第一和第二双极结型晶体管，其以比第一晶体管的每单位发射极面积更低的电流偏置。因此，第一晶体管的基极对发射极电压高于第二晶体管的基极至发射极电压，并且在第一晶体管的基极处相对于第二晶体管的基极产生增量VBE。第一分压器在第一中心节点处产生VBE（分数VBE）的分压。将分数VBE加到第一晶体管的VBE中，并通过闭环反馈作用从第二晶体管的VBE减去，以在第二晶体管的基极处产生温度补偿参考电压。通过在第二晶体管的基极使用电阻分压器，可将参考电压放大到更高的电压电平。

8. 发明申请

US20150115929A1 METHOD AND APPARATUS FOR GENERATING PIECE-WISE LINEAR REGULATED SUPPLY 有权
标题翻译：用于生成线性线性调节电源的方法和装置
公开(公告)号：US20150115929A1
公开(公告)日：2015-04-30
申请号：US14503545
申请日：2014-10-01
申请人： Texas Instruments Incorporated
发明人： Sumantra Seth , Subrato Roy , Deepak Verma
IPC分类号： G05F5/00 , H01C1/16
CPC分类号： G11C5/147 , H01C1/16
摘要： The disclosure provides a voltage regulator for generating piece-wise linear regulated supply voltage. The voltage regulator includes a first clamp circuit that receives a reference voltage and an analog supply voltage. A second clamp circuit receives the reference voltage. A voltage divider circuit is coupled to the first clamp circuit and the second clamp circuit. The voltage divider circuit receives a peripheral supply voltage and generates a regulated supply voltage.
摘要翻译：本公开提供了用于产生分段线性稳压电源电压的电压调节器。电压调节器包括接收参考电压和模拟电源电压的第一钳位电路。第二钳位电路接收参考电压。分压器电路耦合到第一钳位电路和第二钳位电路。分压器电路接收外围电源电压并产生稳定的电源电压。

9. 发明授权

US11329472B2 Methods and apparatus to prevent undesired triggering of short circuit or over current protection 有权
公开(公告)号：US11329472B2
公开(公告)日：2022-05-10
申请号：US16428493
申请日：2019-05-31
申请人： Texas Instruments Incorporated
发明人： Subrato Roy , Ankur Chauhan , Vishal Gupta
IPC分类号： H02H1/04 , H02H7/20 , H02H3/28 , H02H1/00
摘要： Methods, apparatus, systems and articles of manufacture are disclosed for preventing undesired triggering of short circuit or over current protection. An example apparatus includes an output terminal; a voltage detection device coupled to a voltage detection input terminal and the output terminal and including a voltage detection output coupled to a logic gate first input terminal; a pulse extender coupled between a logic gate output and a selecting node; a multiplexer coupled to the selecting node and configured to be coupled to a first protection circuit, a second protection circuit, and a driver; and a switch coupled between an input terminal and the output terminal and including a switch gate terminal coupled to the driver.

10. 发明授权

US10422818B2 Power transistors with a resistor coupled to a sense transistor 有权
公开(公告)号：US10422818B2
公开(公告)日：2019-09-24
申请号：US15859470
申请日：2017-12-30
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Tikno Harjono , Vijay Krishnamurthy , Min Chu , Kuntal Joardar , Gary Eugene Daum , Subrato Roy , Vinayak Hegde , Ankur Chauhan , Sathish Vallamkonda , Md Abidur Rahman , Eung Jung Kim
IPC分类号： G01R15/14 , H01L27/06 , H03K17/567 , H01L25/18 , H01L49/02
摘要： An electronic device comprises: a first semiconductor die; a power transistor integrated in the first semiconductor die, the power transistor comprising a gate, a first terminal, and a second terminal; a sense transistor integrated in the first semiconductor die, the sense transistor comprising a gate coupled to the gate of the power transistor, a first terminal, and a second terminal coupled to the second terminal of the power transistor; and a first resistor integrated in the first semiconductor die, the first resistor comprising a polysilicon section and a metal section coupled to the polysilicon section, the first resistor comprising a first terminal and a second terminal, wherein the first terminal of the first resistor is coupled to the first terminal of the sense transistor.

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