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1. 发明申请

WO2007133510A3 NOISE FREE IMPLEMENTATION OF PWM MODULATOR COMBINED WITH GATE DRIVER STAGE IN A SINGLE DIE 审中-公开
标题翻译：在单个DIE中与门控驱动器组合的PWM调节器的无噪声实现
公开(公告)号：WO2007133510A3
公开(公告)日：2008-08-07
申请号：PCT/US2007011038
申请日：2007-05-08
申请人： INT RECTIFIER CORP , HONDA JUN , CHENG XIAO-CHANG
发明人： HONDA JUN , CHENG XIAO-CHANG
IPC分类号： H03F3/217
CPC分类号： H03F3/217 , H03F1/26 , H03F2200/03 , H03F2200/351 , H03F2200/372
摘要： An integrated noise isolation circuit on a single silicon substrate die having a structural arrangement that minimizes noise. The integrated circuit including a noise sensitive circuit including an input stage; a noise generating circuit including an output stage; at least one high voltage level shift circuit coupling the noise generating and noise sensitive circuits for transferring a signal from the input to the output stage; and at least one floating structure for isolating influence of the noise.
摘要翻译：在单个硅衬底管芯上的集成噪声隔离电路，具有使噪声最小化的结构布置。所述集成电路包括包括输入级的噪声敏感电路; 包括输出级的噪声产生电路; 耦合所述噪声产生和噪声敏感电路的至少一个高电压电平移位电路，用于将信号从所述输入传送到所述输出级; 以及用于隔离噪声影响的至少一个浮动结构。

2. 发明申请

WO2005119280A2 BI-DIRECTIONAL CURRENT SENSING BY MONITORING VS VOLTAGE IN A HALF OR FULL BRIDGE CIRCUIT 审中-公开
标题翻译：通过监视半桥或全桥电路中的电压进行双向电流感测
公开(公告)号：WO2005119280A2
公开(公告)日：2005-12-15
申请号：PCT/US2005019516
申请日：2005-06-02
申请人： INT RECTIFIER CORP , CHENG XIAO-CHANG , HONDA JUN , WILHELM DANA
发明人： CHENG XIAO-CHANG , HONDA JUN , WILHELM DANA
IPC分类号： G01R17/10 , G01R19/00 , G01R31/28 , G01R31/40
CPC分类号： G01R17/10 , G01R19/0092 , G01R31/40 , H02M2001/0009
摘要： An apparatus and method for determining the output current in a bridge-connected switched transistor output circuit including high-side and low-side transistor switches, typically MOSFETS. The voltage at a common node between the high and low side switches is sensed, and offset in a first circuit by a fixed amount so that the voltage is positive for all positive or negative output currents of interest. The output current is actually determined in a second circuit which receives the offset voltage signal only predetermined times in relation to the on-time of the low side switch. The first circuit includes a current reference source/level shifter and a current mirror circuit formed of a plurality of transistors in a particular circuit configuration. The second circuit is coupled to an output of the first circuit by a gated NMOS transistor at the desired times to provide the current measurement signal. The second circuit includes a second current reference source having substantially the same electrical characteristics as the first current reference source, and a second plurality of transistors respectively matched to the input side circuit transistors, and connected in the same circuit configuration. In the second circuit, the offset signal is compared with high and low reference signals to provide an indication if the output current exceeds an overcurrent limit, either positively or negatively. The sensing circuit is advantageously integrated with the output circuit gate driver in a single IC.
摘要翻译：一种用于确定桥接开关晶体管输出电路中的输出电流的装置和方法，该电路包括高侧和低侧晶体管开关，典型地是MOSFET。感测高侧和低侧开关之间的公共节点处的电压，并且在第一电路中偏移固定的量，使得所有感兴趣的正或负输出电流的电压为正。输出电流实际上是在相对于低侧开关的接通时间仅接收到预定时间的偏移电压信号的第二电路中确定的。第一电路包括电流参考源/电平移位器和由特定电路配置中的多个晶体管形成的电流镜电路。第二电路在期望的时间通过门控NMOS晶体管耦合到第一电路的输出，以提供电流测量信号。第二电路包括具有与第一电流参考源基本相同的电特性的第二电流参考源和分别与输入侧电路晶体管匹配并以相同电路配置连接的第二多个晶体管。在第二电路中，将偏移信号与高和低参考信号进行比较，以提供输出电流是否超过过电流极限的指示，无论是正极还是负极。感测电路有利地与单个IC中的输出电路栅极驱动器集成。

3. 发明申请

WO2005020431A3 HIGH VOLTAGE HIGH SPEED AMPLIFIER USING FLOATING HIGH SIDE STRUCTURE 审中-公开
标题翻译：高压高速放大器采用浮动高边结构
公开(公告)号：WO2005020431A3
公开(公告)日：2005-09-01
申请号：PCT/US2004026853
申请日：2004-08-18
申请人： INT RECTIFIER CORP , HONDA JUN , JEONG JONG-DEOG
发明人： HONDA JUN , JEONG JONG-DEOG
IPC分类号： G03B1/00 , H03B1/00 , H03F20060101
CPC分类号： H03F3/21
摘要： An integrated high-voltage linear amplifier IC with reduced power dissipation, faster operation, and small die size, comprising a low side well and a floating high side well; an error amplifier for receiving a noise signal; a level shifting circuit in the low side well for outputting a current mode error signal based on the noise signal to the high side well in differential current mode for noise reduction; and a drive circuit in the high side well. A voltage/current converter receives a voltage mode error signal based on the noise signal and supplies the current input signal. Current mirror circuitry and the drive circuit in the high side well outputs a sum current derived from the current mode error signal for driving external power devices.
摘要翻译：一种集成的高压线性放大器IC，具有降低功耗，运行更快，裸片尺寸小的特点，包括低侧阱和浮动高侧阱; 一个用于接收噪声信号的误差放大器; 低侧阱中的电平移动电路，用于在差分电流模式下将基于噪声信号的电流模式误差信号输出到高侧阱以降低噪声; 以及高侧井中的驱动电路。电压/电流转换器基于噪声信号接收电压模式误差信号并提供电流输入信号。电流反射镜电路和高压侧的驱动电路输出一个从电流模式误差信号中导出的和电流，用于驱动外部功率器件。

4. 发明申请

WO2008019122A3 STARTUP AND SHUTDOWN CLICK NOISE ELIMINATION FOR CLASS D AMPLIFIER 审中-公开
标题翻译：启动和关闭点击噪音消除类D放大器
公开(公告)号：WO2008019122A3
公开(公告)日：2008-12-18
申请号：PCT/US2007017460
申请日：2007-08-06
申请人： INT RECTIFIER CORP , STRYDOM JOHAN TJEERD , HONDA JUN
发明人： STRYDOM JOHAN TJEERD , HONDA JUN
IPC分类号： H03F3/217
CPC分类号： H03F3/217 , H03F1/305
摘要： A method of minimizing an audible click noise from a speaker in a Class D audio power amplifier upon shutdown or startup of a switching stage having two switches series connected at a node, the speaker being connected to the node via an output filter comprising an inductor and a capacitor, the switches being controlled by a controller. The method including the steps of determining a timing interval at the node to transition a peak voltage of the capacitor, the capacitor voltage being a speaker voltage; and eliminating the audible transient voltage excursion across the speaker that causes a click noise during the timing interval, wherein at startup ON and OFF times of the switches are incrementally increased from zero to a normal mode and at shutdown the ON OFF times of the switches are incrementally decreased from the normal mode to zero.
摘要翻译：一种在关闭或启动具有在节点处连接的两个开关串联的开关级的情况下使来自D类音频功率放大器的扬声器的可听咔嗒声噪声最小化的方法，所述扬声器经由包括电感器的输出滤波器连接到所述节点，电容器，开关由控制器控制。该方法包括以下步骤：确定节点处的时间间隔以转变电容器的峰值电压，电容器电压为扬声器电压; 并且消除扬声器周围的可听到的瞬态电压偏移，在定时间隔期间引起咔嗒声，其中在开关的启动时，ON和OFF时间从零增加到正常模式，并且在关闭时，开关的ON OFF时间是从正常模式逐渐减少到零。

5. 发明申请

WO2006107815A3 GATE DRIVER FOR CLASS D AUDIO AMPLIFIER WITH ADAPTIVE DV/DT CONTROL 审中-公开
标题翻译：具有自适应DV / DT控制的D类音频放大器的门控驱动器
公开(公告)号：WO2006107815A3
公开(公告)日：2007-12-13
申请号：PCT/US2006012201
申请日：2006-04-04
申请人： INT RECTIFIER CORP , HONDA JUN
发明人： HONDA JUN
IPC分类号： H03F3/217
CPC分类号： H03F3/217
摘要： Provided is a gate driver circuit for a Class D audio amplifier with adaptive dV/dt control The circuit includes an output switching stage (12), a gate driver (22) capable of driving the output switching stage with a variable dV/dt, and a mode control circuit (24) for setting an operating mode of the gate driver, wherein, the operating mode is selected from a plurality of operating modes, changes the dV/dt of the gate dpver, corresponds to a power output level, and provides a balance point between a generated Electromagnetic Interference (EMI) and an efficiency of the switching stage
摘要翻译：提供了一种具有自适应dV / dt控制的D类音频放大器的栅极驱动电路。该电路包括一个输出开关级（12），能够以可变dV / dt驱动输出开关级的栅极驱动器（22），以及用于设置栅极驱动器的工作模式的模式控制电路（24），其中，从多个操作模式中选择操作模式，改变栅极dpver的dV / dt对应于功率输出电平，并且提供所产生的电磁干扰（EMI）与开关级的效率之间的平衡点

6. 发明申请

WO2006107815A2 GATE DRIVER FOR CLASS D AUDIO AMPLIFIER WITH ADAPTIVE DV/DT CONTROL 审中-公开
标题翻译：具有自适应DV / DT控制的D类音频放大器的门控驱动器
公开(公告)号：WO2006107815A2
公开(公告)日：2006-10-12
申请号：PCT/US2006/012201
申请日：2006-04-04
申请人： INTERNATIONAL RECTIFIER CORPORATION , HONDA, Jun
发明人： HONDA, Jun
IPC分类号： H03F3/38
CPC分类号： H03F3/217
摘要： Provided is a gate driver circuit for a Class D audio amplifier with adaptive dV/dt control. The circuit includes an output switching stage, a gate driver capable of driving the output switching stage with a variable dV/dt; and a mode control circuit for setting an operating mode of the gate driver, wherein, the operating mode is selected from a plurality of operating modes, changes the dV/dt of the gate driver, corresponds to a power output level, and provides a balance point between a generated Electromagnetic Interference (EMI) and an efficiency of the switching stage.
摘要翻译：提供了具有自适应dV / dt控制的D类音频放大器的栅极驱动电路。该电路包括输出开关级，能够以可变dV / dt驱动输出开关级的栅极驱动器; 以及用于设定栅极驱动器的工作模式的模式控制电路，其中，从多种操作模式中选择操作模式，改变栅极驱动器的dV / dt对应于功率输出电平，并提供平衡产生的电磁干扰（EMI）与开关级的效率之间。

7. 发明申请

WO2005060672A3 GATE CONTROL CIRCUIT WITH SOFT START/STOP FUNCTION 审中-公开
标题翻译：具有软启动/停止功能的门控电路
公开(公告)号：WO2005060672A3
公开(公告)日：2005-11-24
申请号：PCT/US2004042465
申请日：2004-12-20
申请人： INT RECTIFIER CORP , HONDA JUN , CHENG XIAO-CHANG
发明人： HONDA JUN , CHENG XIAO-CHANG
IPC分类号： H03F1/30 , H03F3/217 , H03F3/38 , H03K17/16 , H03K17/687
CPC分类号： H03F3/2173 , H03F1/305 , H03F3/2171 , H03F2200/03 , H03F2200/321 , H03F2200/351 , H03F2200/372 , H03F2200/375 , H03K17/166 , H03K17/6874
摘要： A control terminal driver circuit for a switching amplifier including a driver (66, 69) for each of a pair of output power transistors (56, 58) responsive to a PWM information signal. The circuit operates in response to an operating state signal (91) indicating a start up condition of the amplifier to vary the amplitude of the drive pulses for the output transistors (56, 58) between a zero value and a maximum value for normal operation of the amplifier over a start up interval, and to reverse the process during a shut down interval. A DC offset detector (74) is provided to detect a DC offset at amplifier output, and an error circuit (86) responsive to an output of the DC offset detector (74) controls the relative amplitude of the driver outputs during at least a portion of the start up interval to substantially eliminate the DC offset. Also disclosed is a switching amplifier including a control terminal driver circuit as described above.
摘要翻译：一种用于开关放大器的控制端子驱动器电路，其包括响应于PWM信息信号的用于一对输出功率晶体管（56,58）中的每一个的驱动器（66,69）。电路响应于指示放大器的启动条件的操作状态信号（91）而工作，以改变用于输出晶体管（56,58）的驱动脉冲的幅度在正常操作的零值和最大值之间放大器在启动间隔内，并在关闭间隔期间逆转进程。提供DC偏移检测器（74）以检测放大器输出处的DC偏移，并且响应于DC偏移检测器（74）的输出的误差电路（86）在至少一部分期间控制驱动器输出的相对幅度的启动间隔以基本上消除DC偏移。还公开了包括如上所述的控制端子驱动电路的开关放大器。

8. 发明申请

WO2005060672A2 GATE CONTROL CIRCUIT WITH SOFT START/STOP FUNCTION 审中-公开
标题翻译：具有软启动/停止功能的门控电路
公开(公告)号：WO2005060672A2
公开(公告)日：2005-07-07
申请号：PCT/US2004/042465
申请日：2004-12-20
申请人： INTERNATIONAL RECTIFIER CORPORATION , HONDA, Jun , CHENG, Xiao-chang
发明人： HONDA, Jun , CHENG, Xiao-chang
IPC分类号： H03F1/30 , H03F3/217 , H03F3/38 , H03K17/16 , H03K17/687
CPC分类号： H03F3/2173 , H03F1/305 , H03F3/2171 , H03F2200/03 , H03F2200/321 , H03F2200/351 , H03F2200/372 , H03F2200/375 , H03K17/166 , H03K17/6874
摘要： A control terminal driver circuit for a switching amplifier including a driver for each of a pair of output power transistors responsive to a PWM information signal. The circuit operates in response to an operating state signal indicating a start up condition for the amplifier to vary the amplitude of the drive pulses for the output transistors between a zero value and a maximum value for normal operation of the amplifier over a start up interval, and to reverse the process during a shut down interval. A DC offset detector is provided to detect a DC offset at amplifier output, and an error circuit responsive to an output of the DC offset detector controls the relative amplitude of the driver outputs during at least a portion of the start up interval to substantially eliminate the DC offset. Also disclosed is a switching amplifier including a control terminal driver circuit as described above.
摘要翻译：一种用于开关放大器的控制端子驱动器电路，其包括响应于PWM信息信号的一对输出功率晶体管中的每一个的驱动器。电路响应于指示放大器的启动条件的操作状态信号而工作，以在放大器的起始间隔之间改变放大器的正常工作的零值和最大值之间的输出晶体管的驱动脉冲的幅度，并在关闭间隔期间逆转进程。提供DC偏移检测器以检测放大器输出端的DC偏移，并且响应于DC偏移检测器的输出的误差电路在至少启动间隔的一部分期间控制驱动器输出的相对幅度，以基本上消除直流偏移。还公开了包括如上所述的控制端子驱动电路的开关放大器。

9. 发明申请

WO2004109896B1 ACTIVE EMI FILTER HAVING NO INDUCTIVE CURRENT SENSING DEVICE 审中-公开
标题翻译：具有无感应电流感测装置的主动式EMI滤波器
公开(公告)号：WO2004109896B1
公开(公告)日：2005-06-02
申请号：PCT/US2004017484
申请日：2004-06-03
申请人： INT RECTIFIER CORP , HONDA JUN
发明人： HONDA JUN
IPC分类号： H02M1/12 , H02M1/44 , H02M1/00
CPC分类号： H02M1/44 , H02M1/12 , H02M1/15 , H02M2001/123
摘要： An active EMI filter senses current in a ground line as a voltage across a capacitor coupled to the ground line. The EMI filter senses common mode voltage and determines a difference between the common mode voltage and noise to provide an output to the ground line to reduce the difference.
摘要翻译：有源EMI滤波器将地线中的电流感测为耦合到地线的电容器两端的电压。 EMI滤波器检测共模电压，并确定共模电压与噪声之间的差异，以提供输出至接地线以减少差异。

10. 发明申请

WO2004109896A2 ACTIVE EMI FILTER HAVING NO INDUCTIVE CURRENT SENSING DEVICE 审中-公开
标题翻译：无电感电流传感器的主动EMI滤波器
公开(公告)号：WO2004109896A2
公开(公告)日：2004-12-16
申请号：PCT/US2004017484
申请日：2004-06-03
申请人： INT RECTIFIER CORP , HONDA JUN
发明人： HONDA JUN
IPC分类号： H02M1/12 , H02M1/44 , H02M
CPC分类号： H02M1/44 , H02M1/12 , H02M1/15 , H02M2001/123
摘要： An active EMI filter senses current in a ground line as a voltage across a capacitor coupled to the ground line. The EMI filter senses common mode voltage and determines a difference between the common mode voltage and noise to provide an output to the ground line to reduce the difference.
摘要翻译：有源EMI滤波器将接地线中的电流感测为耦合到地线的电容器两端的电压。 EMI滤波器感测共模电压并确定共模电压和噪声之间的差异，以向地线提供输出以减小差分。

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