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1.发明公开MULTI-LEVEL SWITCHING REGULATOR CIRCUITS AND METHODS WITH FINITE STATE MACHINE CONTROL 审中-公开具有有限状态机控制的多电平开关稳压器电路和方法
公开(公告)号：EP3262744A1
公开(公告)日：2018-01-03
申请号：EP16704320.7
申请日：2016-01-28
IPC分类号： H02M7/487
CPC分类号： H02M3/158 , H02M3/07 , H02M3/157 , H02M7/487 , H02M2001/0009 , H02M2001/0045 , H02M2003/072 , H03F3/21 , H03F2200/102
摘要： The present disclosure includes multi-level switching regulator circuits and methods with finite state machine control. In one embodiment, a circuit comprises a switching regulator and a finite state machine. The switching regulator comprises high side and low side switches, and at least one capacitor. A finite state machine receiving a switching signal and a duty cycle signal to generate switch control signals to the switches. The switches are turned on and off under control of the finite state machine in response to transitions of the switching signal and the duty cycle signal. The switching signal may be generated from an envelope tracking signal, and the switching regulator may be part of an envelope tracking system.
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2.发明公开
公开(公告)号：EP3278437A1
公开(公告)日：2018-02-07
申请号：EP16710607.9
申请日：2016-03-07
摘要： The present disclosure includes circuits that have a switching regulator and methods of operating the circuits. The switching regulator may receive a switching signal that has a switching frequency. The circuit also includes a monitor circuit to monitor the switching frequency, and includes a reconfigurable inductance coupled to an output of the switching regulator. The monitor circuit may change the reconfigurable inductance. The circuit includes an amplifier to receive an envelope tracking signal. An output of the amplifier is coupled to the output of the switching regulator to provide a power supply voltage. The circuit may further include a switching generator circuit to produce the switching signal for the switching regulator based on an output current of the amplifier. The monitor circuit may compare a frequency of the envelope tracking signal to the switching frequency of the switching signal and accordingly change the reconfigurable inductance.
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公开(公告)号：EP3278450B1
公开(公告)日：2019-05-15
申请号：EP16711472.7
申请日：2016-03-09
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公开(公告)号：EP3509690A1
公开(公告)日：2019-07-17
申请号：EP17757991.9
申请日：2017-08-14
IPC分类号： A61N1/36
摘要： In certain aspects, a method for providing electrical stimulation includes transferring energy from a battery to an electrode to charge the electrode, and, after the electrode is charged, transferring energy from the electrode to the battery to discharge the battery. The energy transferred from the electrode to the battery may include a portion of the energy transferred from the battery to the electrode.
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5.发明公开
公开(公告)号：EP3278450A1
公开(公告)日：2018-02-07
申请号：EP16711472.7
申请日：2016-03-09
IPC分类号： H03F1/02
CPC分类号： H03F1/0216 , H03F1/0222 , H03F3/211 , H03F2200/102 , H03F2200/453 , H03F2200/78
摘要： The present disclosure includes envelope tracking circuits and methods with adaptive switching frequency. In one embodiment, a circuit comprising an amplifier to receive an envelope tracking signal having an envelope tracking frequency and output voltage and current to a power supply terminal of a power amplifier circuit. A programmable comparator receives an output signal from the amplifier and generates a switching signal having a switching frequency. A switching regulator stage receives the switching signal and outputs a switching current to the power supply terminal. A frequency comparison circuit configures the programmable comparator based on the envelope tracking frequency and the switching frequency so that the switching frequency tracks the envelope tracking frequency.
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公开(公告)号：EP3278437B1
公开(公告)日：2019-10-30
申请号：EP16710607.9
申请日：2016-03-07
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