专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09609701B2 Switch-mode drive sensing of reverse recovery in bipolar junction transistor (BJT)-based power converters 有权
公开(公告)号：US09609701B2
公开(公告)日：2017-03-28
申请号：US14634716
申请日：2015-02-27
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Ramin Zanbaghi , Thirumalai Rengachari , Prashanth Drakshapalli , Rahul Singh , Arnab Kumar Dutta
IPC分类号： H05B37/02 , H05B33/08 , H02M3/335
CPC分类号： H05B33/0815 , H02M3/335 , H05B33/0845 , H05B33/0887 , H05B37/02
摘要： A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as a converter in LED-based light bulbs. The power stage may be operated by a controller to maintain a desired current output to the LED load. The controller may operate the power stage by monitoring a start and end of a reverse recovery time of the BJT. Information regarding the start and end of the reverse recovery time may be used in the control of the power stage to improve efficiency of the power stage.

2. 发明授权

US09185767B2 Self-oscillating resonant converter-based light emitting diode (LED) driver 有权
标题翻译：基于自谐振转换器的发光二极管（LED）驱动器
公开(公告)号：US09185767B2
公开(公告)日：2015-11-10
申请号：US14158445
申请日：2014-01-17
申请人： Cirrus Logic, Inc.
发明人： Ramin Zanbaghi , Arnab Kumar Dutta , Firas Azrai
IPC分类号： H05B41/36 , H05B33/08 , H02M7/5383
CPC分类号： H05B33/0872 , H02M7/5383 , H05B33/0815 , H05B33/0866 , Y02B20/347 , Y02B70/1441
摘要： A self-oscillating resonator (SOR) may be used to control current through light emitting diodes (LEDs). The SOR may be started and stopped by a controller coupled to a transistor switch in the SOR. The controller may output a control signal that starts and stops the SOR by coupling a supply voltage or a ground to a base of the transistor switch in the SOR. Additional control over the current output to the LEDs may be gained through a resistive DAC coupled to the SOR and duty cycling the SOR.
摘要翻译：自振荡谐振器（SOR）可用于控制通过发光二极管（LED）的电流。 SOR可以由耦合到SOR中的晶体管开关的控制器启动和停止。控制器可以通过在SOR中将电源电压或接地耦合到晶体管开关的基极来输出启动和停止SOR的控制信号。可以通过耦合到SOR的电阻式DAC和SOR负载来获得对LED的电流输出的额外控制。

3. 发明授权

US09521712B1 Measurements of multiple external components through a single pin of an integrated circuit 有权
标题翻译：通过集成电路的单个引脚测量多个外部组件
公开(公告)号：US09521712B1
公开(公告)日：2016-12-13
申请号：US14445732
申请日：2014-07-29
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Arnab Kumar Dutta , Stephen Hodapp , Prashanth Drakshapalli
IPC分类号： G01R19/00 , H05B33/08 , G01R27/26 , G01R27/02
CPC分类号： G01R27/2605 , G01R27/14 , H05B33/0842
摘要： Multiple measurements may be obtained via a single pin of an integrated circuit (IC) to set multiple control parameters of a light emitting diode (LED) controller within the IC. For example, a first input signal may be applied from the IC to two or more components via a single IC pin. A first output signal may be obtained from the two or more components via the single IC pin. A second input signal may be applied from the IC to the two or more components via the single IC pin, and a second output signal may be obtained from the two or more components via the single IC pin. A first parameter and a second parameter of the two or more components may be calculated based, at least in part, on the first output signal and the second output signal obtained via the single IC pin.
摘要翻译：可以通过集成电路（IC）的单个引脚获得多个测量值，以设置IC内的发光二极管（LED）控制器的多个控制参数。例如，可以经由单个IC引脚从IC向两个或更多个组件施加第一输入信号。可以经由单个IC引脚从两个或更多个组件获得第一输出信号。可以经由单个IC引脚从IC向两个或更多个部件施加第二输入信号，并且可以经由单个IC引脚从两个或更多个部件获得第二输出信号。可以至少部分地基于经由单个IC引脚获得的第一输出信号和第二输出信号来计算两个或更多个组件的第一参数和第二参数。

4. 发明申请

US20160255685A1 SWITCH-MODE DRIVE SENSING OF REVERSE RECOVERY IN BIPOLAR JUNCTION TRANSISTOR (BJT)-BASED POWER CONVERTERS 有权
标题翻译：双极型晶体管（BJT） - 电源转换器的反向恢复开关式驱动感应
公开(公告)号：US20160255685A1
公开(公告)日：2016-09-01
申请号：US14634716
申请日：2015-02-27
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Ramin Zanbaghi , Thirumalai Rengachari , Prashanth Drakshapalli , Rahul Singh , Arnab Kumar Dutta
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H02M3/335 , H05B33/0845 , H05B33/0887 , H05B37/02
摘要： A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as a converter in LED-based light bulbs. The power stage may be operated by a controller to maintain a desired current output to the LED load. The controller may operate the power stage by monitoring a start and end of a reverse recovery time of the BJT. Information regarding the start and end of the reverse recovery time may be used in the control of the power stage to improve efficiency of the power stage.
摘要翻译：双极结型晶体管（BJT）可用于功率级DC-DC转换器，例如基于LED的灯泡中的转换器。功率级可以由控制器操作以保持对LED负载的期望的电流输出。控制器可以通过监视BJT的反向恢复时间的开始和结束来操作功率级。关于反向恢复时间的开始和结束的信息可以用于功率级的控制，以提高功率级的效率。

5. 发明申请

US20150028764A1 TWO TERMINAL DRIVE OF BIPOLAR JUNCTION TRANSISTOR (BJT) FOR SWITCH-MODE OPERATION OF A LIGHT EMITTING DIODE (LED)-BASED BULB 有权
标题翻译：双极型晶体管（BJT）的双端驱动器用于发光二极管（LED）的开关模式操作
公开(公告)号：US20150028764A1
公开(公告)日：2015-01-29
申请号：US14444087
申请日：2014-07-28
申请人： Cirrus Logic, Inc.
发明人： Siddharth Maru , John L. Melanson , Rahul Singh , Eric King , Thirumalai Rengachari , Ramin Zanbaghi , Arnab Kumar Dutta
IPC分类号： H03K4/48 , H05B33/08
CPC分类号： H03K4/48 , H05B33/0815 , H05B37/02 , Y02B20/347
摘要： A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as for LED-based light bulbs. The BJT may be switched on and off from a controller coupled to two terminals of the BJT. Through the two terminals, the control IC may dynamically adjust a reverse recovery time period of the BJT. The reverse recovery time period may be adjusted by changing an amount of base charge that accumulates on the BJT. Additional, the reverse recovery may be controlled through the use of a reverse base current source applied to the BJT after beginning switching off the BJT.
摘要翻译：双极结型晶体管（BJT）可用于功率级DC-DC转换器，例如用于基于LED的灯泡。 BJT可以从耦合到BJT的两个端子的控制器接通和断开。通过两个端子，控制IC可以动态地调整BJT的反向恢复时间段。可以通过改变在BJT上积累的基本电荷的量来调整反向恢复时间段。此外，可以通过在开始关闭BJT之后使用施加到BJT的反向基极电流源来控制反向恢复。

6. 发明授权

US09496855B2 Two terminal drive of bipolar junction transistor (BJT) of a light emitting diode (LED)-based bulb 有权
标题翻译：基于发光二极管（LED）的灯泡的双极结型晶体管（BJT）的两端驱动器
公开(公告)号：US09496855B2
公开(公告)日：2016-11-15
申请号：US14444087
申请日：2014-07-28
申请人： Cirrus Logic, Inc.
发明人： Siddharth Maru , John L. Melanson , Rahul Singh , Eric King , Thirumalai Rengachari , Ramin Zanbaghi , Arnab Kumar Dutta
IPC分类号： H05B37/02 , H03K4/48 , H05B33/08
CPC分类号： H03K4/48 , H05B33/0815 , H05B37/02 , Y02B20/347
摘要： A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as for LED-based light bulbs. The BJT may be switched on and off from a controller coupled to two terminals of the BJT. Through the two terminals, the control IC may dynamically adjust a reverse recovery time period of the BJT. The reverse recovery time period may be adjusted by changing an amount of base charge that accumulates on the BJT. Additional, the reverse recovery may be controlled through the use of a reverse base current source applied to the BJT after beginning switching off the BJT.
摘要翻译：双极结型晶体管（BJT）可用于功率级DC-DC转换器，例如用于基于LED的灯泡。 BJT可以从耦合到BJT的两个端子的控制器接通和断开。通过两个端子，控制IC可以动态地调整BJT的反向恢复时间段。可以通过改变在BJT上积累的基本电荷的量来调整反向恢复时间段。此外，可以通过在开始关闭BJT之后使用施加到BJT的反向基极电流源来控制反向恢复。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式