公开(公告)号：US08907650B2

公开(公告)日：2014-12-09

申请号：US13637237

申请日：2011-02-28

Applicant: Shaowei Zhen ,  Ping Luo ,  Ruhui Yang ,  Kang Yang ,  Bo Zhang

Inventor： Shaowei Zhen ,  Ping Luo ,  Ruhui Yang ,  Kang Yang ,  Bo Zhang

IPC: G05F3/16 ,  G05F3/30

CPC classification number: G05F3/16 ,  G05F3/30 ,  Y10S323/907

Abstract: This invention involves a bandgap reference circuit in IC. The temperature coefficient of conventional bandgap reference is large and the higher order compensation is difficult to implement. This invention provides an adaptive compensated bandgap reference which solves the problem only using lower order (first order) temperature coefficient compensation. The invention adopts segmental compensation circuit to realize adaptive segmental compensation of bandgap reference with low temperature coefficient. The technical solution includes traditional bandgap voltage reference circuit and adaptive feedback compensation circuit which consists of sample and hold circuit, voltage comparator and control module. This invention controls the bandgap voltage reference through systematical view and it has high process compatibility. This invention can find the best temperature characteristic curve adaptively, the output voltage has low temperature coefficient, meeting the requirement of fabrication process, the implementation is simple with small area. This invention relates to integrated circuits.

Abstract translation: 本发明涉及IC中的带隙基准电路。 常规带隙基准的温度系数大，难以实现较高阶补偿。 本发明提供了一种仅使用低阶（一阶）温度系数补偿来解决问题的自适应补偿带隙基准。 本发明采用分段补偿电路，实现低温系数带隙参考自适应分段补偿。 技术方案包括传统的带隙电压参考电路和自适应反馈补偿电路，由采样保持电路，电压比较器和控制模块组成。 本发明通过系统的视图控制带隙电压参考，并具有较高的工艺兼容性。 本发明可以自适应地找到最佳的温度特性曲线，输出电压温度系数低，满足制造工艺要求，实现面积小。 本发明涉及集成电路。

公开(公告)号：US08866462B2

公开(公告)日：2014-10-21

申请号：US13637230

申请日：2011-02-28

Applicant: Ping Luo ,  Shaowei Zhen ,  Xiang Geng ,  Ye Zhang ,  Yajuan He ,  Bo Zhang

Inventor： Ping Luo ,  Shaowei Zhen ,  Xiang Geng ,  Ye Zhang ,  Yajuan He ,  Bo Zhang

IPC: H02M3/157 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/157 ,  H02M3/158 ,  H02M2001/0025

Abstract: This invention involves with a low power IC (Integrated Circuit) with high energy efficiency. This invention describes a Buck converter that can track the minimum energy point of the load. It works by estimating input energy of every sensing period, taking advantage of energy consumption curve of IC in sub-threshold. Energy estimation is implemented with counting conducted pulses, while maintaining constant input energy of each pulse by regulating output voltage and ON time with digital control circuit. With digital control circuit, minimum energy point can be tracked with a lookup table stored inside. Most of this invention's control circuit is digital, with benefits of low power consumption and small chip area.

Abstract translation: 本发明涉及具有高能量效率的低功率IC（集成电路）。 本发明描述了可以跟踪负载的最小能量点的降压转换器。 通过估计每个感测周期的输入能量，利用IC的能量消耗曲线在次阈值中起作用。 通过计数传导脉冲实现能量估计，同时通过使用数字控制电路调节输出电压和导通时间来保持每个脉冲的恒定输入能量。 使用数字控制电路，可以使用存储在其中的查找表来跟踪最小能量点。 本发明的大多数控制电路是数字式的，具有低功耗和小芯片面积的优点。

公开(公告)号：US20130320946A1

公开(公告)日：2013-12-05

申请号：US13637230

申请日：2011-02-28

Applicant: Ping Luo ,  Shaowei Zhen ,  Xiang Geng ,  Ye Zhang ,  Yajuan He ,  Bo Zhang

Inventor： Ping Luo ,  Shaowei Zhen ,  Xiang Geng ,  Ye Zhang ,  Yajuan He ,  Bo Zhang

IPC: H02M3/157

CPC classification number: H02M3/157 ,  H02M3/158 ,  H02M2001/0025

Abstract: This invention involves with a low power IC (Integrated Circuit) with high energy efficiency. This invention describes a Buck converter that can track the minimum energy point of the load. It works by estimating input energy of every sensing period, taking advantage of energy consumption curve of IC in sub-threshold. Energy estimation is implemented with counting conducted pulses, while maintaining constant input energy of each pulse by regulating output voltage and ON time with digital control circuit. With digital control circuit, minimum energy point can be tracked with a lookup table stored inside. Most of this invention's control circuit is digital, with benefits of low power consumption and small chip area.

Abstract translation: 本发明涉及具有高能量效率的低功率IC（集成电路）。 本发明描述了可以跟踪负载的最小能量点的降压转换器。 通过估计每个感测周期的输入能量，利用IC的能量消耗曲线在次阈值中起作用。 通过计数传导脉冲实现能量估计，同时通过使用数字控制电路调节输出电压和导通时间来保持每个脉冲的恒定输入能量。 使用数字控制电路，可以使用存储在其中的查找表来跟踪最小能量点。 本发明的大多数控制电路是数字式的，具有低功耗和小芯片面积的优点。

公开(公告)号：US08947063B2

公开(公告)日：2015-02-03

申请号：US13637298

申请日：2011-03-07

Applicant: Bo Zhang ,  Shaowei Zhen ,  Ping Luo ,  Xiaohui Zhu ,  Jiangkun Li

Inventor： Bo Zhang ,  Shaowei Zhen ,  Ping Luo ,  Xiaohui Zhu ,  Jiangkun Li

IPC: G05F1/00 ,  H02M3/158 ,  H02M3/157 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M3/157 ,  H02M3/1588 ,  H02M2001/0016 ,  H02M2001/0025 ,  Y02B70/1466

Abstract: An output voltage regulator of step-down switching power converters is described, with the regulator provided with digitally adjusted output voltage. It solves the problem of low regulation due to low error amplifier (EA) gain. This invention includes a power converter with the function of Digitally Error Correction, having Logic Control, EA, PWM comparator, Driver, power devices and passive components. A Digital Calibration Circuit whose input terminal is connected to the output voltage and output terminal is connected to the error signal. When the output voltage exceeds the tolerance range, this Digital Calibration Circuit will increase or decrease the error signal step by step, keeping the output voltage in the tolerance range. The Digital Calibration Circuit can be applied not only in nanometer scale process, but also in traditional process. For those power converters in traditional process, it is also quite promising in applications.

Abstract translation: 描述了降压开关电源转换器的输出电压调节器，调节器提供数字调节的输出电压。 它解决了由于低误差放大器（EA）增益引起的低调制问题。 本发明包括具有数字误差校正功能的功率转换器，具有逻辑控制，EA，PWM比较器，驱动器，功率器件和无源组件。 其输入端连接到输出电压和输出端的数字校准电路连接到误差信号。 当输出电压超过公差范围时，该数字校准电路将逐步增加或减少误差信号，将输出电压保持在公差范围内。 数字校准电路不仅可以在纳米级工艺中应用，也可以应用于传统工艺。 对于传统过程中的电源转换器，在应用中也是非常有希望的。

公开(公告)号：US20130335045A1

公开(公告)日：2013-12-19

申请号：US13637298

申请日：2011-03-17

Applicant: Bo Zhang ,  Shaowei Zhen ,  Ping Luo ,  Xiaohui Zhu ,  Jiangkun Li

Inventor： Bo Zhang ,  Shaowei Zhen ,  Ping Luo ,  Xiaohui Zhu ,  Jiangkun Li

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M3/157 ,  H02M3/1588 ,  H02M2001/0016 ,  H02M2001/0025 ,  Y02B70/1466

Abstract: This invention relates to the output voltage regulator of step-down switching power converters. This invention provides regulator with digitally adjusted output voltage. It solves the problem of low regulation due to low error amplifier (EA) gain. This invention is a power converter with the function of Digitally Error Correction, consisting of Logic Control, EA, PWM comparator, Driver, power devices and passive components. It features Digital Calibration Circuit whose input terminal is connected to the output voltage and output terminal is connected to the error signal. When the output voltage exceeds the tolerance range, this Digital Calibration Circuit will increase or decrease the error signal step by step, keeping the output voltage in the tolerance range. The Digital Calibration Circuit of this invention can be applied not only in nanometer scale process, but also in traditional process. For those power converters in traditional process, it is also quite promising in applications.

Abstract translation: 本发明涉及降压开关电源转换器的输出电压调节器。 本发明为调节器提供数字调节的输出电压。 它解决了由于低误差放大器（EA）增益引起的低调制问题。 本发明是具有数字误差校正功能的功率转换器，由逻辑控制，EA，PWM比较器，驱动器，功率器件和无源器件组成。 它具有数字校准电路，其输入端连接到输出电压，输出端连接到误差信号。 当输出电压超过公差范围时，该数字校准电路将逐步增加或减少误差信号，将输出电压保持在公差范围内。 本发明的数字校准电路不仅可以应用在纳米级工艺中，而且可以应用于传统工艺。 对于传统过程中的电源转换器，在应用中也是非常有希望的。

公开(公告)号：US20130314068A1

公开(公告)日：2013-11-28

申请号：US13637237

申请日：2011-02-28

Applicant: Shaowei Zhen ,  Ping Luo ,  Ruhui Yang ,  Kang Yang ,  Bo Zhang

Inventor： Shaowei Zhen ,  Ping Luo ,  Ruhui Yang ,  Kang Yang ,  Bo Zhang

IPC: G05F3/16

CPC classification number: G05F3/16 ,  G05F3/30 ,  Y10S323/907

Abstract: This invention involves a bandgap reference circuit in IC. The temperature coefficient of conventional bandgap reference is large and the higher order compensation is difficult to implement. This invention provides an adaptive compensated bandgap reference which solves the problem only using lower order (first order) temperature coefficient compensation. The invention adopts segmental compensation circuit to realize adaptive segmental compensation of bandgap reference with low temperature coefficient. The technical solution includes traditional bandgap voltage reference circuit and adaptive feedback compensation circuit which consists of sample and hold circuit, voltage comparator and control module. This invention controls the bandgap voltage reference through systematical view and it has high process compatibility. This invention can find the best temperature characteristic curve adaptively, the output voltage has low temperature coefficient, meeting the requirement of fabrication process, the implementation is simple with small area. This invention relates to integrated circuits.

Abstract translation: 本发明涉及IC中的带隙基准电路。 常规带隙基准的温度系数大，难以实现较高阶补偿。 本发明提供了一种仅使用低阶（一阶）温度系数补偿来解决问题的自适应补偿带隙基准。 本发明采用分段补偿电路，实现低温系数带隙参考自适应分段补偿。 技术方案包括传统的带隙电压参考电路和自适应反馈补偿电路，由采样保持电路，电压比较器和控制模块组成。 本发明通过系统的方式控制带隙电压参考，并具有较高的工艺兼容性。 本发明可以自适应地找到最佳的温度特性曲线，输出电压温度系数低，满足制造工艺要求，实现面积小。 本发明涉及集成电路。