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公开(公告)号：US09207692B2
公开(公告)日：2015-12-08
申请号：US14056292
申请日：2013-10-17
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat , Michael R. Kay , Mohammad Ahsanul Adeeb
CPC classification number: G05F1/46 , H03F1/0211 , H03F1/0227 , H03F1/3223 , H03F3/189 , H03F3/24 , H03F2200/102 , H03F2200/432 , H04B2001/0441
Abstract: An envelope tracking power supply and an offset capacitive element are disclosed. The offset capacitive element is coupled between a switching output and an analog output of the envelope tracking power supply, which operates in one of an envelope tracking mode, a transition mode, and an average power tracking mode. During the envelope tracking mode, the envelope tracking power supply provides an envelope power supply signal using both the switching output and the analog output. During the transition mode, the envelope tracking power supply drives a voltage across the offset capacitive element from a first voltage to a second voltage, such that during a transition from the envelope tracking mode to the transition mode, the offset capacitive element has the first voltage, and during a transition from the transition mode to the average power tracking mode, the offset capacitive element has the second voltage.
Abstract translation: 公开了一种包络跟踪电源和偏移电容元件。 偏移电容元件耦合在包络跟踪电源的开关输出和模拟输出之间，其以包络跟踪模式，转换模式和平均功率跟踪模式之一工作。 在包络跟踪模式期间，包络跟踪电源使用开关输出和模拟输出两者提供包络电源信号。 在转换模式期间，包络跟踪电源将偏移电容元件上的电压从第一电压驱动到第二电压，使得在从包络跟踪模式转换到转换模式期间，偏移电容元件具有第一电压 ，并且在从转换模式到平均功率跟踪模式的转变期间，偏移电容元件具有第二电压。
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公开(公告)号：US20160056705A1
公开(公告)日：2016-02-25
申请号：US14831080
申请日：2015-08-20
Applicant: RF Micro Devices, Inc.
Inventor： Mohammad Ahsanul Adeeb , Philippe Gorisse , Nadim Khlat , Michael R. Kay
CPC classification number: H02M3/1582 , H02M3/156
Abstract: A direct current (DC) voltage converter configured to transition between operation modes is disclosed. A voltage selection circuitry is provided in a DC voltage conversion circuit to control a buck-boost converter that generates a DC output voltage. As opposed to conventional methods of switching the buck-boost converter between a buck mode and a boost mode based on a single switching threshold, the voltage selection circuitry is configured to switch the buck-boost converter between the buck mode and the boost mode based on multiple voltage thresholds. Each of the multiple voltage thresholds defines a respective range for the DC output voltage. By controlling the buck-boost converter based on multiple voltage thresholds, it is possible to provide a smoother transition between the buck mode and the boost mode, thus reducing voltage errors in the DC output voltage and improving reliability of the DC voltage conversion circuit.
Abstract translation: 公开了一种配置成在操作模式之间转换的直流（DC）电压转换器。 在DC电压转换电路中提供电压选择电路以控制产生DC输出电压的降压 - 升压转换器。 与基于单个切换阈值在降压模式和升压模式之间切换降压 - 升压转换器的常规方法相反，电压选择电路被配置为基于降压模式和升压模式之间的降压 - 升压转换器 多电压阈值。 多个电压阈值中的每一个定义了直流输出电压的相应范围。 通过基于多个电压阈值控制降压 - 升压转换器，可以在降压模式和升压模式之间提供更平滑的转换，从而减小直流输出电压中的电压误差并提高直流电压转换电路的可靠性。
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公开(公告)号：US10090762B2
公开(公告)日：2018-10-02
申请号：US14831080
申请日：2015-08-20
Applicant: RF Micro Devices, Inc.
Inventor： Mohammad Ahsanul Adeeb , Philippe Gorisse , Nadim Khlat , Michael R. Kay
Abstract: A direct current (DC) voltage converter configured to transition between operation modes is disclosed. A voltage selection circuitry is provided in a DC voltage conversion circuit to control a buck-boost converter that generates a DC output voltage. As opposed to conventional methods of switching the buck-boost converter between a buck mode and a boost mode based on a single switching threshold, the voltage selection circuitry is configured to switch the buck-boost converter between the buck mode and the boost mode based on multiple voltage thresholds. Each of the multiple voltage thresholds defines a respective range for the DC output voltage. By controlling the buck-boost converter based on multiple voltage thresholds, it is possible to provide a smoother transition between the buck mode and the boost mode, thus reducing voltage errors in the DC output voltage and improving reliability of the DC voltage conversion circuit.
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公开(公告)号：US20140111178A1
公开(公告)日：2014-04-24
申请号：US14056292
申请日：2013-10-17
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat , Michael R. Kay , Mohammad Ahsanul Adeeb
IPC: G05F1/46
CPC classification number: G05F1/46 , H03F1/0211 , H03F1/0227 , H03F1/3223 , H03F3/189 , H03F3/24 , H03F2200/102 , H03F2200/432 , H04B2001/0441
Abstract: An envelope tracking power supply and an offset capacitive element are disclosed. The offset capacitive element is coupled between a switching output and an analog output of the envelope tracking power supply, which operates in one of an envelope tracking mode, a transition mode, and an average power tracking mode. During the envelope tracking mode, the envelope tracking power supply provides an envelope power supply signal using both the switching output and the analog output. During the transition mode, the envelope tracking power supply drives a voltage across the offset capacitive element from a first voltage to a second voltage, such that during a transition from the envelope tracking mode to the transition mode, the offset capacitive element has the first voltage, and during a transition from the transition mode to the average power tracking mode, the offset capacitive element has the second voltage.
Abstract translation: 公开了一种包络跟踪电源和偏移电容元件。 偏移电容元件耦合在包络跟踪电源的开关输出和模拟输出之间，其以包络跟踪模式，转换模式和平均功率跟踪模式之一工作。 在包络跟踪模式期间，包络跟踪电源使用开关输出和模拟输出两者提供包络电源信号。 在转换模式期间，包络跟踪电源将偏移电容元件上的电压从第一电压驱动到第二电压，使得在从包络跟踪模式转换到转换模式期间，偏移电容元件具有第一电压 ，并且在从转换模式到平均功率跟踪模式的转变期间，偏移电容元件具有第二电压。
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