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1. 发明公开

US20240235233A1 SHARED CURRENT SENSING UNIT 审中-公开
公开(公告)号：US20240235233A1
公开(公告)日：2024-07-11
申请号：US18405800
申请日：2024-01-05
申请人： Advanced Micro Devices, Inc. , ATI Technologies ULC
发明人： David King Wai Li , Amanullah Samit
IPC分类号： H02J7/00 , G01R31/382
CPC分类号： H02J7/0068 , G01R31/382 , H02J2207/20
摘要： A device is disclosed that includes a battery charge controller having an input removably connected to a power adapter and an output supplying DC current to a battery, a voltage regulator having an input coupled to the output of the battery charge controller and the battery, and a current sensing unit used by the battery charge controller for sensing a charging current to the battery and by the voltage regulator for sensing a discharging current from the battery. Various other methods and systems are also disclosed.

2. 发明公开

US20240235376A1 VOLTAGE REGULATOR WITH ACTIVE SHUNT 审中-公开
公开(公告)号：US20240235376A1
公开(公告)日：2024-07-11
申请号：US18478485
申请日：2023-09-29
申请人： Advanced Micro Devices, Inc. , ATI Technologies ULC
发明人： David King Wai Li , Amanullah Samit , Indrani Paul , Meeta Surendramohan Srivastav , Sriram Sambamurthy
IPC分类号： H02M1/32 , H02M3/02
CPC分类号： H02M1/32 , H02M3/02
摘要： The disclosed voltage regulator circuit includes a capacitor bank configured for a first voltage step corresponding to a voltage undershoot, and a shunt circuit configured for a second voltage step exceeding the first voltage step. Various other methods, systems, and computer-readable media are also disclosed.

3. 发明申请

US20140312710A1 MULTIPLE OUTPUT CHARGE PUMP WITH PEAK VOLTAGE FOLLOWING FREQUENCY DIVIDER CONTROL 有权
标题翻译：具有脉冲电压的多输出充电泵在频率分配器控制
公开(公告)号：US20140312710A1
公开(公告)日：2014-10-23
申请号：US13865266
申请日：2013-04-18
申请人： ATI TECHNOLOGIES ULC
发明人： David King Wai Li
IPC分类号： G05F1/10
CPC分类号： G05F1/10 , H02M3/07 , H02M2001/008 , Y10T307/74
摘要： A power converter for a load with varying power requirements dynamically adjusts its supply voltage to the load so as to track the radio frequency (RF) envelope of the signal being carried by the load. The supply voltage can be provided by a multiple-output charge pump providing multiple output voltage levels concurrently, and a switch to provide a selected one of the different output voltage levels as the supply voltage to the load. A controller controls the switch to dynamically modify the voltage level selected for output as the supply voltage such that the supply voltage tracks the RF envelope of the signal being carried by the load. As the switching losses of transistors of the power converter may exceed the power savings achieved through envelope tracking, the power converter employs a peak following frequency divider circuit that limits the switching frequency of the power converter to a threshold frequency.
摘要翻译：用于具有不同功率要求的负载的功率转换器动态地调整其对负载的电源电压，以便跟踪由负载承载的信号的射频（RF）包络。电源电压可以由同时提供多个输出电压电平的多输出电荷泵提供，以及提供不同输出电压电平中选择的一个作为负载的电源电压的开关。控制器控制开关以动态地修改所选择的用于输出的电压电平作为电源电压，使得电源电压跟踪由负载承载的信号的RF包络。由于功率转换器的晶体管的开关损耗可能超过通过包络跟踪实现的功率节省，因此功率转换器采用将功率转换器的开关频率限制到阈值频率的峰值跟随分频器电路。

4. 发明授权

US09563211B2 Multiple output charge pump with peak voltage following frequency divider control 有权
标题翻译：多输出电荷泵，峰值电压跟随分频器控制
公开(公告)号：US09563211B2
公开(公告)日：2017-02-07
申请号：US13865266
申请日：2013-04-18
申请人： ATI Technologies ULC
发明人： David King Wai Li
IPC分类号： G05F1/10 , H02M3/07 , H02M1/00
CPC分类号： G05F1/10 , H02M3/07 , H02M2001/008 , Y10T307/74
摘要： A power converter for a load with varying power requirements dynamically adjusts its supply voltage to the load so as to track the radio frequency (RF) envelope of the signal being carried by the load. The supply voltage can be provided by a multiple-output charge pump providing multiple output voltage levels concurrently, and a switch to provide a selected one of the different output voltage levels as the supply voltage to the load. A controller controls the switch to dynamically modify the voltage level selected for output as the supply voltage such that the supply voltage tracks the RF envelope of the signal being carried by the load. As the switching losses of transistors of the power converter may exceed the power savings achieved through envelope tracking, the power converter employs a peak following frequency divider circuit that limits the switching frequency of the power converter to a threshold frequency.
摘要翻译：用于具有不同功率要求的负载的功率转换器动态地调整其对负载的电源电压，以便跟踪由负载承载的信号的射频（RF）包络。电源电压可以由同时提供多个输出电压电平的多输出电荷泵提供，以及提供不同输出电压电平中选择的一个作为负载的电源电压的开关。控制器控制开关以动态地修改所选择的用于输出的电压电平作为电源电压，使得电源电压跟踪由负载承载的信号的RF包络。由于功率转换器的晶体管的开关损耗可能超过通过包络跟踪实现的功率节省，因此功率转换器采用将功率转换器的开关频率限制到阈值频率的峰值跟随分频器电路。

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