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1. 发明申请

WO2008088413B1 CAPACITOR CHARGING METHODS AND APPARATUS 审中-公开
标题翻译：电容充电方法和装置
公开(公告)号：WO2008088413B1
公开(公告)日：2008-11-20
申请号：PCT/US2007021932
申请日：2007-10-15
申请人： ALLEGRO MICROSYSTEMS INC , MANGTANI VIJAY , LEE NAI-CHI , TSAI TSENG-NAN , HUMENICK JOHN
发明人： MANGTANI VIJAY , LEE NAI-CHI , TSAI TSENG-NAN , HUMENICK JOHN
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： A capacitor charging circuit is provided with a primary side output voltage sensing circuit including an RC network having an RC time constant with a predetermined relationship to the RC time constant of the output capacitor. Once the capacitor voltage reaches a fully charged level, the charging mode is terminated. The output voltage is continuously detected by measuring the voltage across the primary side RC network that decays at a predetermined rate with respect to the output capacitor and the charging mode is commenced once the RC voltage falls to a predetermined level. According to a further aspect of the invention, a switch control circuit in a flyback converter controls the switch off time in response to detection of a change in the slope polarity of the voltage at a terminal of the switch.
摘要翻译：电容器充电电路设置有初级侧输出电压检测电路，其包括具有与输出电容器的RC时间常数预定关系的RC时间常数的RC网络。一旦电容器电压达到完全充电电平，充电模式就会终止。通过测量相对于输出电容器以预定速率衰减的初级侧RC网络的电压来连续检测输出电压，一旦RC电压下降到预定电平，充电模式开始。根据本发明的另一方面，回扫转换器中的开关控制电路响应于检测到开关端子处的电压的斜率极性的变化而控制断开时间。

2. 发明申请

WO2008088413A2 CAPACITOR CHARGING METHODS AND APPARATUS 审中-公开
标题翻译：电容器充电方法和设备
公开(公告)号：WO2008088413A2
公开(公告)日：2008-07-24
申请号：PCT/US2007021932
申请日：2007-10-15
申请人： ALLEGRO MICROSYSTEMS INC , MANGTANI VIJAY , LEE NAI-CHI , TSAI TSENG-NAN , HUMENICK JOHN
发明人： MANGTANI VIJAY , LEE NAI-CHI , TSAI TSENG-NAN , HUMENICK JOHN
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： A capacitor charging circuit is provided with a primary side output voltage sensing circuit including an RC network having an RC time constant with a predetermined relationship to the RC time constant of the output capacitor. Once the capacitor voltage reaches a fully charged level, the charging mode is terminated. The output voltage is continuously detected by measuring the voltage across the primary side RC network that decays at a predetermined rate with respect to the output capacitor and the charging mode is commenced once the RC voltage falls to a predetermined level. According to a further aspect of the invention, a switch control circuit in a flyback converter controls the switch off time in response to detection of a change in the slope polarity of the voltage at a terminal of the switch.
摘要翻译：电容器充电电路设置有初级侧输出电压感测电路，该初级侧输出电压感测电路包括具有与输出电容器的RC时间常数具有预定关系的RC时间常数的RC网络。一旦电容器电压达到完全充电电平，充电模式终止。通过测量相对于输出电容器以预定速率衰减的初级侧RC网络上的电压来连续检测输出电压，并且一旦RC电压下降到预定电平就开始充电模式。根据本发明的另一方面，反激式转换器中的开关控制电路响应于检测到开关端子处的电压的斜率极性的变化而控制开关关断时间。

3. 发明申请

WO2007087121A3 ARRANGEMENTS FOR AN INTEGRATED SENSOR 审中-公开
标题翻译：一体化传感器的安排
公开(公告)号：WO2007087121A3
公开(公告)日：2008-04-03
申请号：PCT/US2007000093
申请日：2007-01-04
申请人： ALLEGRO MICROSYSTEMS INC , DOOGUE MICHAEL C , TAYLOR WILLIAM P , MANGTANI VIJAY
发明人： DOOGUE MICHAEL C , TAYLOR WILLIAM P , MANGTANI VIJAY
IPC分类号： G01R15/20 , G01R33/02 , G01R33/06 , G01R33/07 , G01R33/09 , H01L43/06
CPC分类号： H01L43/04 , B82Y25/00 , G01R15/08 , G01R15/207 , G01R33/02 , G01R33/06 , G01R33/07 , G01R33/09 , G01R33/093 , H01L23/49541 , H01L25/162 , H01L43/02 , H01L43/065 , H01L43/08 , H01L2224/48091 , H01L2224/48137 , H01L2224/48247 , H01L2924/3025 , H01L2924/00014 , H01L2924/00
摘要： An integrated circuit (10) can have a first substrate (14) supporting a magnetic field sensing element (30) and a second substrate (26) supporting another magnetic field sensing element (20). The first and second substrates can be arranged in a variety of configurations. Another integrated circuit can have a first magnetic field sensing element and second different magnetic field sensing element disposed on surfaces thereof.
摘要翻译：集成电路（10）可以具有支撑磁场感测元件（30）的第一基板（14）和支撑另一磁场感测元件（20）的第二基板（26）。第一和第二基板可以以各种配置布置。另一个集成电路可以具有设置在其表面上的第一磁场感测元件和第二不同的磁场感测元件。

4. 发明申请

WO2009064682A3 ELECTRONIC CIRCUITS FOR DRIVING SERIES CONNECTED LIGHT EMITTING DIODE STRINGS 审中-公开
标题翻译：用于驱动系列连接的发光二极管的电子电路
公开(公告)号：WO2009064682A3
公开(公告)日：2010-02-04
申请号：PCT/US2008082934
申请日：2008-11-10
申请人： ALLEGRO MICROSYSTEMS INC , SZCZESZYNSKI GREGORY , ALNAHAS BASSEM , MANGTANI VIJAY
发明人： SZCZESZYNSKI GREGORY , ALNAHAS BASSEM , MANGTANI VIJAY
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , G09G3/3413 , G09G3/342 , G09G2320/064 , G09G2330/021 , H05B33/0818 , H05B33/0827 , Y02B20/347
摘要： Electronic circuits provide an error signal to control a regulated output voltage signal generated by a controllable DC-DC converter for driving one or more series connected strings of light emitting diodes.
摘要翻译：电子电路提供误差信号以控制由用于驱动一个或多个串联连接的发光二极管串的可控DC-DC转换器产生的稳定的输出电压信号。

5. 发明申请

WO2008086050B1 ELECTRONIC CIRCUIT FOR DRIVING A DIODE LOAD 审中-公开
标题翻译：用于驱动二极管负载的电子电路
公开(公告)号：WO2008086050B1
公开(公告)日：2008-12-18
申请号：PCT/US2008050026
申请日：2008-01-02
申请人： ALLEGRO MICROSYSTEMS INC , SZCZESZYNSKI GREGORY , WEKHANDE SHASHANK , MANGTANI VIJAY
发明人： SZCZESZYNSKI GREGORY , WEKHANDE SHASHANK , MANGTANI VIJAY
IPC分类号： G05F1/46 , H05B33/08
CPC分类号： G05F1/46
摘要： An electronic circuit includes circuit portions for identifying a largest voltage drop through one of a plurality of series connected diode strings and for controlling a boost switching regulator according to the largest voltage drop. The electronic circuit can sense an open circuit series connected diode string, which would otherwise have the largest voltage drop, and can disconnect that open circuit series connected diode string from control of the boost switching regulator. Another electronic circuit includes a current limiting circuit coupled to or within a boost switching regulator and configured to operate with a diode load. Another electronic circuit includes a pulse width modulation circuit configured to dim a series connected string of light emitting diodes.
摘要翻译：电子电路包括用于识别通过多个串联连接的二极管串中的一个的最大电压降的电路部分，并且用于根据最大电压降来控制升压开关调节器。电子电路可以感测开路串联的二极管串，否则其将具有最大的电压降，并且可以断开该开路串联连接的二极管串与升压开关调节器的控制。另一个电子电路包括耦合到升压开关调节器中或其内的限流电路，并配置为在二极管负载下工作。另一个电子电路包括一个脉冲宽度调制电路，配置成调光串联的发光二极管串。

6. 发明申请

WO2008086050A3 ELECTRONIC CIRCUIT FOR DRIVING A DIODE LOAD 审中-公开
标题翻译：驱动二极管负载的电子电路
公开(公告)号：WO2008086050A3
公开(公告)日：2008-10-16
申请号：PCT/US2008050026
申请日：2008-01-02
申请人： ALLEGRO MICROSYSTEMS INC , SZCZESZYNSKI GREGORY , WEKHANDE SHASHANK , MANGTANI VIJAY
发明人： SZCZESZYNSKI GREGORY , WEKHANDE SHASHANK , MANGTANI VIJAY
IPC分类号： G05F1/46 , H05B33/08
CPC分类号： G05F1/46
摘要： An electronic circuit includes circuit portions for identifying a largest voltage drop through one of a plurality of series connected diode strings and for controlling a boost switching regulator according to the largest voltage drop. The electronic circuit can sense an open circuit series connected diode string, which would otherwise have the largest voltage drop, and can disconnect that open circuit series connected diode string from control of the boost switching regulator. Another electronic circuit includes a current limiting circuit coupled to or within a boost switching regulator and configured to operate with a diode load. Another electronic circuit includes a pulse width modulation circuit configured to dim a series connected string of light emitting diodes.
摘要翻译：电子电路包括用于识别通过多个串联连接的二极管串中的一个串联连接的二极管串中的最大电压降并根据最大电压降来控制升压开关调节器的电路部分。电子电路可以检测开路串联连接的二极管串，否则该串联连接的二极管串会具有最大的电压降，并且可以将开路串联连接的二极管串与升压开关调节器的控制断开。另一种电子电路包括限流电路，其耦合到升压开关调节器或在升压开关调节器内并被配置成以二极管负载工作。另一种电子电路包括配置成使串联连接的发光二极管串变暗的脉宽调制电路。

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