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1. 发明授权

US11139735B2 Drive circuit, drive method and integrated circuit thereof 有权
公开(公告)号：US11139735B2
公开(公告)日：2021-10-05
申请号：US16986451
申请日：2020-08-06
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Fuhua Deng
IPC分类号： G05F1/10 , G05F3/02 , H02M3/07
摘要： A drive circuit for a switch capacitor converter having first, second, third, and fourth power switches connected in series, can include: first, second, third, and fourth drivers configured to respectively drive the first, second, third power, and fourth power switches according to control signals; a bootstrap power supply circuit comprising a bootstrap capacitor configured to supply power to the first, second, and third drivers in a time-sharing manner; and a power supply configured to supply power to the fourth driver and charge the bootstrap capacitor, where the fourth power switch is grounded.

2. 发明申请

US20210050779A1 DRIVE CIRCUIT, DRIVE METHOD AND INTEGRATED CIRCUIT THEREOF 有权
公开(公告)号：US20210050779A1
公开(公告)日：2021-02-18
申请号：US16986451
申请日：2020-08-06
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Fuhua Deng
IPC分类号： H02M3/07
摘要： A drive circuit for a switch capacitor converter having first, second, third, and fourth power switches connected in series, can include: first, second, third, and fourth drivers configured to respectively drive the first, second, third power, and fourth power switches according to control signals; a bootstrap power supply circuit comprising a bootstrap capacitor configured to supply power to the first, second, and third drivers in a time-sharing manner; and a power supply configured to supply power to the fourth driver and charge the bootstrap capacitor, where the fourth power switch is grounded.

3. 发明授权

US11476687B2 Power indication circuit and power indication method 有权
公开(公告)号：US11476687B2
公开(公告)日：2022-10-18
申请号：US16883512
申请日：2020-05-26
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Fuhua Deng
IPC分类号： G08B21/00 , H02J7/00 , G01R31/36 , G01R31/388
摘要： A power indication circuit for indicating different power levels of a battery, can include: N LED indicators; N setting resistors; N multifunction ports; a drive circuit coupled to the N multifunction ports and the battery, and being configured to acquire N threshold voltage signals in accordance with voltages at the N multifunction ports during a first time period of an operation cycle, and to generate N comparison signals in accordance with the N threshold voltage signals and a voltage detection signal generated by detecting a voltage of the battery, in order to drive the N LED indicators in accordance with the N comparison signals during a second time period of the operation cycle; and where each of the N setting resistors coupled in parallel to a corresponding one of the N LED indicators is respectively coupled to a corresponding one of the N multifunction ports.

4. 发明申请

US20170149264A1 ADAPTIVE CHARGE CONTROL CIRCUIT AND CONTROL METHOD FOR SWITCHING CHARGER 审中-公开
公开(公告)号：US20170149264A1
公开(公告)日：2017-05-25
申请号：US15340064
申请日：2016-11-01
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Fuhua Deng
IPC分类号： H02J7/00
CPC分类号： H02J7/0068 , H02J7/0052 , H02J7/007 , H02J7/0073 , H02J7/0077 , H02J2007/0059
摘要： An adaptive charge control circuit configured for a switching charger can include: an input voltage control circuit configured to receive an input voltage signal of the switching charger and an input voltage reference signal, and to generate a first error signal; an input current control circuit configured to receive an input current signal of the switching charger and an input current reference signal, and to generate a second error signal; a charging current control circuit configured to receive a charging current signal of the switching charger and a charging current reference signal, and to generate a third error signal; and a charging voltage control circuit configured to receive a charging voltage signal of the switching charger and a charging voltage reference signal, and to generate a fourth error signal.

5. 发明申请

US20150364997A1 CONTROL CIRCUIT, BATTERY POWER SUPPLY DEVICE AND CONTROL METHOD 有权
标题翻译：控制电路，电池电源装置及控制方法
公开(公告)号：US20150364997A1
公开(公告)日：2015-12-17
申请号：US14719662
申请日：2015-05-22
申请人： Silergy Semiconductor Technology (Hangzhou) LTD.
发明人： Fuhua Deng
IPC分类号： H02M3/158
CPC分类号： H02M3/1588 , H02M3/1582 , H02M2001/0025 , Y02B70/1466
摘要： A control circuit can include: (i) a boost mode controller configured to control a switch type converter to operate in a boost mode such that an input current is less than a first input current threshold, where the switch type converter comprises a first terminal coupled to a power supply line from an external power supply to a load, and a second terminal coupled to a battery; (ii) a buck mode controller configured to control the switch type converter to operate in a buck mode; and (iii) a select circuit configured to select either the boost mode controller or the buck mode controller to control the switch type converter based on a detected value of the input current of the external power supply and a detected value of a battery charging/discharging current.
摘要翻译：控制电路可以包括：（i）升压模式控制器，被配置为控制开关类型转换器以升压模式工作，使得输入电流小于第一输入电流阈值，其中开关型转换器包括第一端子耦合连接到从外部电源到负载的电源线，以及耦合到电池的第二端子; （ii）降压模式控制器，被配置为控制所述开关类型转换器以降压模式工作; 以及（iii）选择电路，被配置为基于所述外部电源的输入电流的检测值和电池充电/放电的检测值来选择所述升压模式控制器或所述降压模式控制器来控制所述开关类型转换器当前。

6. 发明授权

US10250060B2 Adaptive charge control circuit and control method for switching charger 有权
公开(公告)号：US10250060B2
公开(公告)日：2019-04-02
申请号：US15340064
申请日：2016-11-01
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Fuhua Deng
IPC分类号： H01M10/44 , H01M10/46 , H02J7/00
摘要： An adaptive charge control circuit configured for a switching charger can include: an input voltage control circuit configured to receive an input voltage signal of the switching charger and an input voltage reference signal, and to generate a first error signal; an input current control circuit configured to receive an input current signal of the switching charger and an input current reference signal, and to generate a second error signal; a charging current control circuit configured to receive a charging current signal of the switching charger and a charging current reference signal, and to generate a third error signal; and a charging voltage control circuit configured to receive a charging voltage signal of the switching charger and a charging voltage reference signal, and to generate a fourth error signal.

7. 发明授权

US09769888B2 Driving circuit and driving method for a plurality of LED strings 有权
公开(公告)号：US09769888B2
公开(公告)日：2017-09-19
申请号：US15148646
申请日：2016-05-06
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Xudong Wang , Fuhua Deng
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0827 , H05B33/0845 , H05B33/0851 , H05B33/0884 , H05B33/0887 , Y02B20/347
摘要： A constant current driving circuit can include: LED strings; a voltage regulator configured to provide an output voltage signal as a supply for the LED strings; current regulating circuits corresponding to the LED strings, and being coupled between the LED strings and ground, where the current regulating circuits are configured to regulate currents through the LED strings according to present currents and reference current signals; a voltage feedback circuit configured to receive input voltage signals of the current regulating circuits, and to select a voltage feedback signal for controlling the output voltage signal according to the voltage feedback signal and a reference voltage signal; and a signal generating circuit corresponding to the current regulating circuits, where each signal generating circuit receives an input voltage signal of a corresponding current regulating circuit, and generates an error amplifying signal according to the input voltage signal and the reference voltage signal.

8. 发明授权

US09716434B2 Switch control circuit and control method for a four-switch buck-boost converter 有权
公开(公告)号：US09716434B2
公开(公告)日：2017-07-25
申请号：US14921025
申请日：2015-10-23
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Fuhua Deng
IPC分类号： H02M3/158 , H02M1/00
CPC分类号： H02M3/1582 , H02M2001/0003
摘要： An apparatus can include: (i) a power stage circuit including first, second, third, and fourth switches and an inductor; (ii) a constant time control circuit configured to generate a switch trigger signal according to switching signals of the first and third switches; (iii) a PWM control circuit configured to receive an input voltage signal via the input terminal, an output voltage via the output terminal, and the switch trigger signal, and to generate switching signals to control the first, second, third, and fourth switches; and (iv) the PWM control circuit being configured to turn on or off the first and third switches in response to the switch trigger signal being activated.

9. 发明授权

US09654005B2 Battery charge and discharge management circuit and electronic device thereof 有权
公开(公告)号：US09654005B2
公开(公告)日：2017-05-16
申请号：US14829910
申请日：2015-08-19
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Fuhua Deng
IPC分类号： H02J7/00 , H02M3/158 , H02J7/02
CPC分类号： H02M3/1582 , H02J7/022
摘要： An apparatus can include: (i) a first switch coupled to an external interface and an inductor; (ii) a second switch coupled to ground and a common node between the first switch and the inductor; (ii) a third switch coupled to ground and a common node between the inductor and a fourth switch, where the inductor and first, second, third, and fourth switches form a power converter; (iii) a charge and discharge control circuit coupled to the power converter, and being configured to control the first, second, third, and fourth switches; (iv) an internal load coupled to said fourth switch; and (v) a chargeable battery coupled to the fourth switch, where the battery is configured to provide power to the internal load when the external interface is disconnected from the external power supply and the external load.

10. 发明授权

US09559542B2 Battery powered circuit and method 有权
标题翻译：电池供电电路及方法
公开(公告)号：US09559542B2
公开(公告)日：2017-01-31
申请号：US14678530
申请日：2015-04-03
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Fuhua Deng
IPC分类号： H02J7/00 , H02J7/04 , H02M3/158
CPC分类号： H02J7/0081 , H02J7/0065 , H02J7/008 , H02J7/0093 , H02M3/158
摘要： In one embodiment, an apparatus can include: (i) a power converter having an output terminal configured to supply power for a load; (ii) a first switch coupled between the power converter and an input voltage; (iii) a second switch coupled between a battery and the output terminal of the power converter; (iv) a PWM controller configured to control a switching state of a power transistor in the power converter; (v) a mode-switching circuit configured to select a charging mode or a discharging mode based on a voltage of the battery and a charging current; and (vi) a charging-discharging circuit configured to control the second switch based on the mode selection.
摘要翻译：在一个实施例中，装置可以包括：（i）功率转换器，其具有被配置为为负载供电的输出端子; （ii）耦合在功率转换器和输入电压之间的第一开关; （iii）耦合在电池和电力转换器的输出端之间的第二开关; （iv）PWM控制器，被配置为控制所述功率转换器中的功率晶体管的开关状态; （v）模式切换电路，被配置为基于所述电池的电压和充电电流来选择充电模式或放电模式; 以及（vi）充电 - 放电电路，被配置为基于所述模式选择来控制所述第二开关。

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