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公开(公告)号：US20160299521A1
公开(公告)日：2016-10-13
申请号：US15037051
申请日：2015-01-08
申请人： Hasnani AKRAM , Yung-Chih YEN , Patrick Stanley RIEHL , Anand SATYAMOORTHY , MEDIATEK SINGAPORE PTE. LTD.
CPC分类号： H02J50/12 , G05F1/56 , H01F38/14 , H02J5/005 , H02J7/025 , H02M3/07 , H02M3/156 , H02M7/217 , H02M2001/0045 , H02M2007/2195 , H04B5/0037 , Y02B70/1408 , Y02B70/1425 , Y02B70/1441
摘要： A synchronous rectifier using only n-channel devices in which the low-side switches are effectively cross-coupled using low-side comparators and the high-side switches perform an accurate zero-voltage-switching (ZVS) comparison. The charging path of each bootstrap domain is completed through the low-side switches, which are each always on for every half-cycle independent of loading. This scheme gives rectifier efficiency gain because a) each bootstrap domain receives maximum charging time, and b) the charging occurs through a switch rather than a diode. Both these factors ensure the bootstrap domain is fully charged, thereby reducing conduction losses through the rectifier switches. Furthermore, settings may be adjusted by software to optimize the resistive and capacitive losses of the rectifier. Using data for die temperature and operating frequency, software can create a feedback loop, dynamically adjusting rectifier settings in order to achieve the best possible efficiency.
摘要翻译： 仅使用n沟道器件的同步整流器，其中低侧开关使用低端比较器和高侧开关有效地交叉耦合，执行精确的零电压切换（ZVS）比较。 每个引导域的充电路径通过低端开关完成，每个开关每个半周期不依赖于负载。 该方案提供整流器效率增益，因为a）每个引导域接收最大充电时间，b）通过开关而不是二极管发生充电。 这两个因素都能确保自举域充满电，从而减少整流开关的导通损耗。 此外，可以通过软件来调整设置以优化整流器的电阻和电容损耗。 使用模块温度和工作频率的数据，软件可以创建一个反馈回路，动态调整整流器设置，以达到最佳的效率。
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公开(公告)号：US11290008B2
公开(公告)日：2022-03-29
申请号：US16828923
申请日：2020-03-24
发明人： Alex Jianzhong Chen , Yung-Chih Yen
摘要： A resonant switched-capacitor converter is provided. The resonant switched-capacitor is configured to convert an input voltage on an input terminal of the resonant switched-capacitor converter into an output voltage on an output terminal of the resonant switched-capacitor converter. The resonant switched-capacitor converter includes a first resonant tank, a second resonant tank, a non-resonant capacitor, and a connection control circuit coupled to the input terminal, the output terminal, the first resonant tank, the second resonant tank and the non-resonant capacitor. The connection control circuit is configured to control connections of the first resonant tank, the second resonant tank and the non-resonant capacitor.
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公开(公告)号：US10277072B2
公开(公告)日：2019-04-30
申请号：US14763829
申请日：2015-01-08
IPC分类号： H02J50/10 , H01F38/14 , H04B5/00 , H02J50/12 , H02J5/00 , H02J7/02 , H02M3/156 , H02M3/07 , H02M7/217 , G05F1/575 , H02M1/00 , H02M7/219 , G05F1/56
摘要： A wireless power receiver IC in which the power path can be reconfigured as either a low-dropout regulator (LDO), a switched-mode power supply (SMPS) or a power switch (PSW) is provided. All three modes share the same pass device to reduce die area and share the same output terminal to reduce pin. In an inductive wireless receiver, the power path can be reprogrammed on the fly to LDO or PSW mode or can be reprogrammed on the fly to SMPS or PSW mode. In a resonant or multi-mode wireless receiver, the power path can be reprogrammed on the fly to SMPS or PSW mode. Furthermore, to achieve high power transfer efficiency performance, using N-channel MOSFET as its pass device has better efficiency and smaller die area than P-channel MOSFET pass device.
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公开(公告)号：US20200313550A1
公开(公告)日：2020-10-01
申请号：US16828923
申请日：2020-03-24
发明人： Alex Jianzhong Chen , Yung-Chih Yen
摘要： A resonant switched-capacitor converter is provided. The resonant switched-capacitor is configured to convert an input voltage on an input terminal of the resonant switched-capacitor converter into an output voltage on an output terminal of the resonant switched-capacitor converter. The resonant switched-capacitor converter includes a first resonant tank, a second resonant tank, a non-resonant capacitor, and a connection control circuit coupled to the input terminal, the output terminal, the first resonant tank, the second resonant tank and the non-resonant capacitor. The connection control circuit is configured to control connections of the first resonant tank, the second resonant tank and the non-resonant capacitor.
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公开(公告)号：US10084345B2
公开(公告)日：2018-09-25
申请号：US14771956
申请日：2014-03-14
CPC分类号： H02J50/12 , H02J5/005 , H02J17/00 , H03F3/2171 , H03F3/2176
摘要： A resonant wireless power (RWP) system is provided that includes a signal generator that provides an input signal waveform. An amplifier structure amplifies signals for transmissions to a receiver that is powered from a fixed DC voltage supply. The amplifier structure is operated either using differential or single-ended amplifiers to provide two different output power levels, in burst mode to provide a range of output power levels, or using a capacitor in a matching network that is adjusted to provide a range of output power levels.
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公开(公告)号：US09954400B2
公开(公告)日：2018-04-24
申请号：US15037051
申请日：2015-01-08
IPC分类号： H02M3/156 , H02J50/12 , H02J5/00 , H02J7/02 , H01F38/14 , G05F1/575 , H02M3/07 , H02M7/217 , H04B5/00 , H02M1/00 , H02M7/219 , G05F1/56
摘要： A synchronous rectifier using only n-channel devices in which the low-side switches are effectively cross-coupled using low-side comparators and the high-side switches perform an accurate zero-voltage-switching (ZVS) comparison. The charging path of each bootstrap domain is completed through the low-side switches, which are each always on for every half-cycle independent of loading. This scheme gives rectifier efficiency gain because a) each bootstrap domain receives maximum charging time, and b) the charging occurs through a switch rather than a diode. Both these factors ensure the bootstrap domain is fully charged, thereby reducing conduction losses through the rectifier switches. Furthermore, settings may be adjusted by software to optimize the resistive and capacitive losses of the rectifier. Using data for die temperature and operating frequency, software can create a feedback loop, dynamically adjusting rectifier settings in order to achieve the best possible efficiency.
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公开(公告)号：US12027977B2
公开(公告)日：2024-07-02
申请号：US17718332
申请日：2022-04-12
发明人： Man Pun Chan , Hao-Ping Hong , Yung-Chih Yen
CPC分类号： H02M3/158 , H02M1/0003
摘要： A feedback loop circuit of a voltage regulator includes a voltage extraction circuit and a loop filter circuit. The voltage extraction circuit receives an error voltage signal that is indicative of difference between an output voltage signal and a reference voltage of the voltage regulator, and generates a voltage extraction signal by extracting one representative voltage for one switching cycle of the voltage regulator according to the error voltage signal. The loop filter circuit applies filtering to the voltage extraction signal to set a feedback signal, and output the feedback signal to a controller circuit of the voltage regulator for regulating the output voltage signal.
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公开(公告)号：US20220393587A1
公开(公告)日：2022-12-08
申请号：US17719401
申请日：2022-04-13
发明人： Man Pun Chan , Hao-Ping Hong , Yung-Chih Yen , Chien-Hui Wang , Cheng-Hsuan Fan , Jian-Rong Huang
摘要： A feedback loop circuit of a voltage regulator includes a loadline and a compensation circuit. The loadline generates a feedback signal according to a sensed current signal that provides information of an inductor current of the voltage regulator, and outputs the feedback signal to a controller circuit of the voltage regulator for regulating an output voltage of the voltage regulator. The compensation circuit generates a compensation signal to compensate for a deviation of the output voltage, wherein the feedback signal generated from the loadline is affected by the compensation signal.
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公开(公告)号：US20220337159A1
公开(公告)日：2022-10-20
申请号：US17718332
申请日：2022-04-12
发明人： Man Pun Chan , Hao-Ping Hong , Yung-Chih Yen
摘要： A feedback loop circuit of a voltage regulator includes a voltage extraction circuit and a loop filter circuit. The voltage extraction circuit receives an error voltage signal that is indicative of difference between an output voltage signal and a reference voltage of the voltage regulator, and generates a voltage extraction signal by extracting one representative voltage for one switching cycle of the voltage regulator according to the error voltage signal. The loop filter circuit applies filtering to the voltage extraction signal to set a feedback signal, and output the feedback signal to a controller circuit of the voltage regulator for regulating the output voltage signal.
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公开(公告)号：US10177602B2
公开(公告)日：2019-01-08
申请号：US15037051
申请日：2015-01-08
IPC分类号： H02M3/156 , H02J50/12 , H01F38/14 , H02J5/00 , H02J7/02 , H02M3/07 , H02M7/217 , H04B5/00 , G05F1/575 , G05F1/56 , H02M1/00 , H02M7/219
CPC分类号： H02J50/12 , G05F1/56 , G05F1/575 , H01F38/14 , H02J5/005 , H02J7/025 , H02M3/07 , H02M3/156 , H02M7/217 , H02M2001/0045 , H02M2007/2195 , H04B5/0037 , Y02B70/1408 , Y02B70/1425 , Y02B70/1441
摘要： A synchronous rectifier using only n-channel devices in which the low-side switches are effectively cross-coupled using low-side comparators and the high-side switches perform an accurate zero-voltage-switching (ZVS) comparison. The charging path of each bootstrap domain is completed through the low-side switches, which are each always on for every half-cycle independent of loading. This scheme gives rectifier efficiency gain because a) each bootstrap domain receives maximum charging time, and b) the charging occurs through a switch rather than a diode. Both these factors ensure the bootstrap domain is fully charged, thereby reducing conduction losses through the rectifier switches. Furthermore, settings may be adjusted by software to optimize the resistive and capacitive losses of the rectifier. Using data for die temperature and operating frequency, software can create a feedback loop, dynamically adjusting rectifier settings in order to achieve the best possible efficiency.
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