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1. 发明申请

US20130293298A1 Split Capacitors Scheme for Suppressing Overshoot Voltage Glitches in Class D Amplifier Output Stage 有权
标题翻译：用于抑制D类放大器输出级过冲电压毛刺的分流电容器方案
公开(公告)号：US20130293298A1
公开(公告)日：2013-11-07
申请号：US13628011
申请日：2012-09-26
申请人： Chenling Huang , Haibo Fei , Matthew D. Sienko
发明人： Chenling Huang , Haibo Fei , Matthew D. Sienko
IPC分类号： H03F3/217
CPC分类号： H03F3/217 , H03F1/52
摘要： A class D power amplifier is provided. The class D power amplifier includes a class D driver circuit having a plurality of output transistors, at least one active clamp circuit coupled to at least one output transistor of the plurality of output transistors, and at least one filter bank circuit coupled to the at least one active clamp circuit for controlling a voltage of the at least one output transistor. Accordingly, a voltage across a drain node and source node (VDS), a voltage across a gate node and source node (VGS), and a voltage across the gate node and drain node (VGD) of the output transistors is reduced to increase reliability of the power amplifier while consuming less power and utilizing less die area.
摘要翻译：提供D类功率放大器。 D类功率放大器包括具有多个输出晶体管的D类驱动器电路，耦合到多个输出晶体管中的至少一个输出晶体管的至少一个有源钳位电路以及耦合至少一个至少一个的至少一个滤波器组电路一个有源钳位电路，用于控制至少一个输出晶体管的电压。因此，降低了漏极节点和源极节点（VDS）两端的电压，栅极节点和源节点（VGS）两端的电压以及输出晶体管的栅极节点和漏极节点（VGD）两端的电压，以增加可靠性的功率放大器，同时消耗更少的功率并且利用更少的管芯面积。

2. 发明申请

US20130285744A1 Overcurrent Protection for Class D Power Amplifier 有权
标题翻译： D类功率放大器的过电流保护
公开(公告)号：US20130285744A1
公开(公告)日：2013-10-31
申请号：US13646585
申请日：2012-10-05
申请人： Haibo Fei , Matthew D. Sienko , Chenling Huang
发明人： Haibo Fei , Matthew D. Sienko , Chenling Huang
IPC分类号： H03F3/217
CPC分类号： H03F3/45 , H03F1/523 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F2200/456 , H03F2200/462 , H03F2200/474
摘要： In an aspect of the disclosure, a class D power amplifier with an overcurrent protection (OCP) circuit is provided. The class D power amplifier includes a plurality of output transistors, and the OCP circuit is mirrored to at least one output transistor of the plurality of output transistors in a closed-loop feedback configuration for precisely controlling a sensing current of the OCP circuit with respect to an output current of the at least one output transistor. The class D power amplifier with the OCP circuit in the closed-loop feedback configuration mitigates a variation in a current threshold value for triggering interruption of the class D power amplifier.
摘要翻译：在本公开的一个方面，提供了具有过电流保护（OCP）电路的D类功率放大器。 D类功率放大器包括多个输出晶体管，并且OCP电路以闭环反馈配置被镜像到多个输出晶体管中的至少一个输出晶体管，用于精确地控制OCP电路的感测电流相对于所述至少一个输出晶体管的输出电流。具有闭环反馈配置中的OCP电路的D类功率放大器减轻了用于触发D类功率放大器中断的电流阈值的变化。

3. 发明授权

US09088251B2 Overcurrent protection for class D power amplifier 有权
标题翻译： D类功率放大器的过电流保护
公开(公告)号：US09088251B2
公开(公告)日：2015-07-21
申请号：US13646585
申请日：2012-10-05
申请人： Haibo Fei , Matthew D. Sienko , Chenling Huang
发明人： Haibo Fei , Matthew D. Sienko , Chenling Huang
IPC分类号： H03F3/45 , H03F1/52 , H03F3/217
CPC分类号： H03F3/45 , H03F1/523 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F2200/456 , H03F2200/462 , H03F2200/474
摘要： In an aspect of the disclosure, a class D power amplifier with an overcurrent protection (OCP) circuit is provided. The class D power amplifier includes a plurality of output transistors, and the OCP circuit is mirrored to at least one output transistor of the plurality of output transistors in a closed-loop feedback configuration for precisely controlling a sensing current of the OCP circuit with respect to an output current of the at least one output transistor. The class D power amplifier with the OCP circuit in the closed-loop feedback configuration mitigates a variation in a current threshold value for triggering interruption of the class D power amplifier.
摘要翻译：在本公开的一个方面，提供了具有过电流保护（OCP）电路的D类功率放大器。 D类功率放大器包括多个输出晶体管，并且OCP电路以闭环反馈配置被镜像到多个输出晶体管中的至少一个输出晶体管，用于精确地控制OCP电路的感测电流相对于所述至少一个输出晶体管的输出电流。具有闭环反馈配置中的OCP电路的D类功率放大器减轻了用于触发D类功率放大器中断的电流阈值的变化。

4. 发明授权

US08947163B2 Split capacitors scheme for suppressing overshoot voltage glitches in class D amplifier output stage 有权
标题翻译：用于抑制D类放大器输出级中的过冲电压毛刺的分离电容器方案
公开(公告)号：US08947163B2
公开(公告)日：2015-02-03
申请号：US13628011
申请日：2012-09-26
申请人： Chenling Huang , Haibo Fei , Matthew D. Sienko
发明人： Chenling Huang , Haibo Fei , Matthew D. Sienko
IPC分类号： H03F3/217
CPC分类号： H03F3/217 , H03F1/52
摘要： A class D power amplifier is provided. The class D power amplifier includes a class D driver circuit having a plurality of output transistors, at least one active clamp circuit coupled to at least one output transistor of the plurality of output transistors, and at least one filter bank circuit coupled to the at least one active clamp circuit for controlling a voltage of the at least one output transistor. Accordingly, a voltage across a drain node and source node (VDS), a voltage across a gate node and source node (VGS), and a voltage across the gate node and drain node (VGD) of the output transistors is reduced to increase reliability of the power amplifier while consuming less power and utilizing less die area.
摘要翻译：提供D类功率放大器。 D类功率放大器包括具有多个输出晶体管的D类驱动器电路，耦合到多个输出晶体管中的至少一个输出晶体管的至少一个有源钳位电路以及耦合至少一个至少一个的至少一个滤波器组电路一个有源钳位电路，用于控制至少一个输出晶体管的电压。因此，降低了漏极节点和源极节点（VDS）两端的电压，栅极节点和源节点（VGS）两端的电压以及输出晶体管的栅极节点和漏极节点（VGD）两端的电压，以增加可靠性的功率放大器，同时消耗更少的功率并且利用更少的管芯面积。

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