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1.发明申请CHARGE PUMP-BASED DRIVE CIRCUITRY FOR BIPOLAR JUNCTION TRANSISTOR (BJT)-BASED POWER SUPPLY 有权双极型晶体管（BJT） - 充电电源的基于充电泵的驱动电路公开(公告)号：US20140339999A1
公开(公告)日：2014-11-20
申请号：US14280539
申请日：2014-05-16
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Ramin Zanbaghi , Jieyeon Choi , Firas Azrai , Rahul Singh , Siddharth Maru
CPC classification number: H02M3/07 , H02M1/08 , H02M3/335 , H02M2001/0006 , H03K17/64 , H05B33/0815 , H05B33/0845
Abstract: A bipolar junction transistor (BJT) may be used to generate a supply voltage for operating a controller, such as a lighting controller for a LED-based light bulb. A base of the BJT may receive current generated from the supply voltage to control operation of the BJT. Although the base of the BJT would be at a lower voltage than the emitter, a base drive circuit may be coupled between the emitter and the base of the BJT to increase the voltage. As one example, the base drive circuit may be a charge pump. In another example, the BJT may function as its own charge pump. In yet another example, a positive and a negative base current of the BJT may be independently controlled to regulate an output supply voltage VDD from the BJT.
Abstract translation: 可以使用双极结型晶体管（BJT）来产生用于操作诸如用于基于LED的灯泡的照明控制器的控制器的电源电压。 BJT的基座可以接收从电源电压产生的电流，以控制BJT的工作。 虽然BJT的基极处于比发射极更低的电压，但是基极驱动电路可以耦合在发射极和BJT的基极之间以增加电压。 作为一个示例，基本驱动电路可以是电荷泵。 在另一个例子中，BJT可以用作其自身的电荷泵。 在另一个例子中，可以独立地控制BJT的正和负的基极电流以调节来自BJT的输出电源电压VDD。
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2.发明授权公开(公告)号：US09253833B2
公开(公告)日：2016-02-02
申请号：US14280474
申请日：2014-05-16
Applicant: Cirrus Logic, Inc.
Inventor： Ramin Zanbaghi , John L. Melanson , Jieyeon Choi
CPC classification number: H05B33/0815 , H02M3/158 , H02M2001/0009 , H05B33/0845 , Y02B20/346
Abstract: A power stage for light emitting diode (LED)-based light bulbs may include a bipolar junction transistor (BJT). The base of BJT switch may be biased externally and the operation of the BJT may be through a single pin to the emitter of the BJT. A controller integrated circuit (IC) may control the power stage through the main BJT's emitter pin in an emitter-controlled BJT-based power stage. The emitter-controlled BJT-based power stage may replace the conventional buck-boost power stage topology. For example, the controller may activate and deactivate a switch coupling the BJT's emitter to ground. A power supply for the controller IC may be charged from a reverse recovery of charge from the BJT, and the reverse recovery controlled by the controller IC.
Abstract translation: 基于发光二极管（LED）的灯泡的功率级可以包括双极结型晶体管（BJT）。 BJT开关的基极可能被外部偏置，并且BJT的操作可能通过BJT的发射极的单个引脚。 控制器集成电路（IC）可以通过发射极控制的基于BJT的功率级中的主BJT发射极引脚来控制功率级。 基于发射极控制的基于BJT的功率级可以取代传统的降压 - 升压功率级拓扑。 例如，控制器可以激活和去激活将BJT的发射极耦合到地的开关。 用于控制器IC的电源可以从BJT的反向恢复电荷和由控制器IC控制的反向恢复来充电。
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3.发明申请公开(公告)号：US20140339995A1
公开(公告)日：2014-11-20
申请号：US14280474
申请日：2014-05-16
Applicant: Cirrus Logic, Inc.
Inventor： Ramin Zanbaghi , John L. Melanson , Jieyeon Choi
CPC classification number: H05B33/0815 , H02M3/158 , H02M2001/0009 , H05B33/0845 , Y02B20/346
Abstract: A power stage for light emitting diode (LED)-based light bulbs may include a bipolar junction transistor (BJT). The base of BJT switch may be biased externally and the operation of the BJT may be through a single pin to the emitter of the BJT. A controller integrated circuit (IC) may control the power stage through the main BJT's emitter pin in an emitter-controlled BJT-based power stage. The emitter-controlled BJT-based power stage may replace the conventional buck-boost power stage topology. For example, the controller may activate and deactivate a switch coupling the BJT's emitter to ground. A power supply for the controller IC may be charged from a reverse recovery of charge from the BJT, and the reverse recovery controlled by the controller IC.
Abstract translation: 基于发光二极管（LED）的灯泡的功率级可以包括双极结型晶体管（BJT）。 BJT开关的基极可能被外部偏置，并且BJT的操作可能通过BJT的发射极的单个引脚。 控制器集成电路（IC）可以通过发射极控制的基于BJT的功率级中的主BJT发射极引脚来控制功率级。 基于发射极控制的基于BJT的功率级可以取代传统的降压 - 升压功率级拓扑。 例如，控制器可以激活和去激活将BJT的发射极耦合到地的开关。 用于控制器IC的电源可以从BJT的反向恢复电荷和由控制器IC控制的反向恢复来充电。
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4.发明授权公开(公告)号：US09735671B2
公开(公告)日：2017-08-15
申请号：US14280539
申请日：2014-05-16
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Ramin Zanbaghi , Jieyeon Choi , Firas Azrai , Rahul Singh , Siddharth Maru
CPC classification number: H02M3/07 , H02M1/08 , H02M3/335 , H02M2001/0006 , H03K17/64 , H05B33/0815 , H05B33/0845
Abstract: A bipolar junction transistor (BJT) may be used to generate a supply voltage for operating a controller, such as a lighting controller for a LED-based light bulb. A base of the BJT may receive current generated from the supply voltage to control operation of the BJT. Although the base of the BJT would be at a lower voltage than the emitter, a base drive circuit may be coupled between the emitter and the base of the BJT to increase the voltage. As one example, the base drive circuit may be a charge pump. In another example, the BJT may function as its own charge pump. In yet another example, a positive and a negative base current of the BJT may be independently controlled to regulate an output supply voltage VDD from the BJT.
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