公开(公告)号：US20150097545A1

公开(公告)日：2015-04-09

申请号：US14505054

申请日：2014-10-02

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Navin Venkata Kommaraju ,  Rahul Prakash ,  Chintan Trehan

IPC: G05F1/12

CPC classification number: G05F1/12 ,  G05F1/46

Abstract: A circuit includes an output current circuit that employs a regulated voltage to provide an output voltage to drive a load current through an output load resistor. A load resistance sensor (LRS) senses the resistance of the output load resistor based on the output voltage and the load current. A controller provides a sense voltage control command to set the regulated voltage to an initial sense voltage during a sense mode. The initial sense voltage adjusts the output voltage of the output current circuit and enables the LRS to sense the resistance of the output load resistor at a given setting of the load current. The controller provides a clamp control command based on the sensed resistance of the output load resistor to set the regulated voltage to a fixed regulated voltage during an operation mode. The fixed regulated voltage enables the output current circuit to supply a predetermined maximum load current to the output load resistor at a predetermined minimum setting of the output voltage.

Abstract translation: 电路包括输出电流电路，其采用调节电压来提供输出电压以驱动负载电流通过输出负载电阻器。 负载电阻传感器（LRS）根据输出电压和负载电流检测输出负载电阻的电阻。 控制器提供感测电压控制命令，以在感测模式期间将调节电压设置为初始感测电压。 初始感测电压调节输出电流电路的输出电压，并使LRS能够在给定的负载电流设置下感测输出负载电阻的电阻。 控制器基于感测到的输出负载电阻的电阻提供钳位控制命令，以在操作模式期间将调节电压设置为固定的调节电压。 固定的调节电压使得输出电流电路能够在输出电压的预定最小设置下向输出负载电阻器提供预定的最大负载电流。

公开(公告)号：US11194355B2

公开(公告)日：2021-12-07

申请号：US14505054

申请日：2014-10-02

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Navin Venkata Kommaraju ,  Rahul Prakash ,  Chintan Trehan

IPC: G05F1/12 ,  G05F1/46

Abstract: A circuit includes an output current circuit that employs a regulated voltage to provide an output voltage to drive a load current through an output load resistor. A load resistance sensor (LRS) senses the resistance of the output load resistor based on the output voltage and the load current. A controller provides a sense voltage control command to set the regulated voltage to an initial sense voltage during a sense mode. The initial sense voltage adjusts the output voltage of the output current circuit and enables the LRS to sense the resistance of the output load resistor at a given setting of the load current. The controller provides a clamp control command based on the sensed resistance of the output load resistor to set the regulated voltage to a fixed regulated voltage during an operation mode. The fixed regulated voltage enables the output current circuit to supply a predetermined maximum load current to the output load resistor at a predetermined minimum setting of the output voltage.

公开(公告)号：US09088211B2

公开(公告)日：2015-07-21

申请号：US14177558

申请日：2014-02-11

Applicant: Texas Instruments Incorporated

Inventor： Vadim V. Ivanov ,  Rahul Prakash

IPC: G05F1/00 ,  H02M3/158

CPC classification number: H02M3/1582

Abstract: A buck-boost regulation methodology operable, in one embodiment, with a single inductor, four-switch (S1-S4) buck-boost regulator configured for DCM. Buck-boost transition switching control is operable when inductor charge time exceeds a max charge time, and inductor discharge time exceeds a max discharge time, and includes: (a) during charge transition cycles, at the end of the max charge time, if IL is less than a predetermined peak current IL—MAX, switching S2 on (grounding the output side of the inductor) and S4 off, causing IL to increase (a rapid S1S2 charging current ramp), until IL reaches IL—MAX, and (b) during discharge transition cycles, at the end of the max charge time, if IL is greater than zero, switching S1 off and S3 on (grounding the input side of the inductor), causing IL to increase (a rapid S3S4 IL discharging current ramp), until IL reaches zero.

Abstract translation: 在一个实施例中，降压 - 升压调节方法可用于配置用于DCM的单电感器，四开关（S1-S4）降压 - 升压调节器。 当电感充电时间超过最大充电时间，电感放电时间超过最大放电时间时，降压 - 升压转换开关控制可操作，包括：（a）在充电转换周期期间，在最大充电时间结束时，如果IL 小于预定的峰值电流IL-MAX，开关S2（电感器的输出侧接地）和S4关闭，导致IL增加（快速S1S2充电电流斜坡），直到IL达到IL-MAX，并且（b ）在放电过渡周期中，在最大充电时间结束时，如果IL大于零，则关断S1和S3（接地电感的输入端），导致IL增加（快速S3S4 IL放电电流斜坡 ），直到IL达到零。

公开(公告)号：US20140225577A1

公开(公告)日：2014-08-14

申请号：US14177558

申请日：2014-02-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vadim V. Ivanov ,  Rahul Prakash

IPC: H02M3/158

CPC classification number: H02M3/1582

Abstract: A buck-boost regulation methodology operable, in one embodiment, with a single inductor, four-switch (S1-S4) buck-boost regulator configured for DCM. Buck-boost transition switching control is operable when inductor charge time exceeds a max charge time, and inductor discharge time exceeds a max discharge time, and includes: (a) during charge transition cycles, at the end of the max charge time, if IL is less than a predetermined peak current IL—MAX, switching S2 on (grounding the output side of the inductor) and S4 off, causing IL to increase (a rapid S1S2 charging current ramp), until IL reaches IL—MAX, and (b) during discharge transition cycles, at the end of the max charge time, if IL is greater than zero, switching S1 off and S3 on (grounding the input side of the inductor), causing IL to increase (a rapid S3S4 IL discharging current ramp), until IL reaches zero.

Abstract translation: 在一个实施例中，降压 - 升压调节方法可用于配置用于DCM的单电感器，四开关（S1-S4）降压 - 升压调节器。 当电感充电时间超过最大充电时间，电感放电时间超过最大放电时间时，降压 - 升压转换开关控制可操作，包括：（a）在充电转换周期期间，在最大充电时间结束时，如果IL 小于预定的峰值电流IL-MAX，开关S2（电感器的输出侧接地）和S4关闭，导致IL增加（快速S1S2充电电流斜坡），直到IL达到IL-MAX，并且（b ）在放电过渡周期中，在最大充电时间结束时，如果IL大于零，则关断S1和S3（接地电感器的输入端），导致IL增加（快速S3S4 IL放电电流斜坡 ），直到IL达到零。