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1. 发明申请

US20160081151A1 Dynamic Bleeder Current Control for LED Dimmers 有权
标题翻译： LED调光器的动态渗流电流控制
公开(公告)号：US20160081151A1
公开(公告)日：2016-03-17
申请号：US14799133
申请日：2015-07-14
申请人： Dialog Semiconductor Inc.
发明人： Xiaoyan Wang , Nan Shi , Clarita Chiting Knoll , Guang Feng
IPC分类号： H05B33/08
CPC分类号： H05B33/0818 , H05B33/0815 , Y02B20/347
摘要： LED lamp systems as described herein include a dimmer switch and a bleeder circuit. The bleeder circuit provides a bleeder current to management voltage and to prevent the dimmer switch from turning off prematurely. The bleeder circuit may monitor the AC input voltage outputted by the dimmer switch. When the AC input voltage is less than a first threshold, the bleeder circuit provides a bleeder current. When the AC input voltage is greater than a second threshold, the bleeder circuit adjusts the bleeder current to less than a predetermined level.
摘要翻译：如本文所述的LED灯系统包括调光开关和泄放电路。泄放电路为管理电压提供泄放电流，并防止调光器开关过早关断。泄放电路可以监视调光开关输出的交流输入电压。当AC输入电压小于第一阈值时，泄放电路提供泄放电流。当AC输入电压大于第二阈值时，泄放电路将泄放电流调节到小于预定水平。

2. 发明授权

US10720846B2 Sense resistor short detection for switching power converters 有权
公开(公告)号：US10720846B2
公开(公告)日：2020-07-21
申请号：US15399658
申请日：2017-01-05
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Guang Feng , Pengju Kong , Juyoung Yoon
IPC分类号： H02M1/08 , H02M3/335 , H02M1/32 , H02M1/00
摘要： Systems, devices, and methods are provided to enable power converters to use two or more sensing elements to reliably detect a short circuit (or soft-short circuit) existing in the power converter and distinguish these conditions from other operating conditions, such as low voltage conditions or normal operating conditions. The disclosed embodiments enable the accurate detection of fault conditions, such as short circuits or soft short conditions, using a number of sensing elements, such as sense resistors and the inherent resistance of switching devices, while preventing the detection of false positives due to other factors such as low input voltage.

3. 发明授权

US10148170B2 Switching power converter with magnetizing current shaping 有权
公开(公告)号：US10148170B2
公开(公告)日：2018-12-04
申请号：US15824927
申请日：2017-11-28
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Guang Feng , Xiaoyan Wang , Nan Shi
IPC分类号： H02M3/335 , H02M1/42 , H02M3/158 , H03K5/08 , H02M1/00
摘要： A switching power converter is provided that uses at least two peak current thresholds. In particular, the switching power converter clamps a desired peak current to not fall below a low peak current threshold value while a rectified input voltage is decreasing and to not fall below a high peak current threshold value subsequent to zero crossing times for an AC input voltage.

4. 发明授权

US10084370B2 Active startup timing control at fault mode 有权
公开(公告)号：US10084370B2
公开(公告)日：2018-09-25
申请号：US15683326
申请日：2017-08-22
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Guang Feng , Pengju Kong , Kai-Wen Chin , Mingsheng Peng
IPC分类号： H02M1/36 , H02M1/32 , H02M3/335
CPC分类号： H02M1/32 , H02M1/36 , H02M3/33507 , H02M2001/0006 , H02M2001/322
摘要： A power switch transistor for a switching power converter is maintained on during a re-startup period by a zener breakdown voltage following a fault condition for the switching power converter. A source voltage from the power switch transistor is used to charge a VCC capacitor that stores a power supply voltage for a controller for the switching power converter.

5. 发明申请

US20180205312A1 Dual Stage Vcc Charging for Switched Mode Power Supply 审中-公开
公开(公告)号：US20180205312A1
公开(公告)日：2018-07-19
申请号：US15406564
申请日：2017-01-13
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Mingsheng Peng , Andrey Malinin , Pengju Kong , Qiu Sha , Guang Feng
IPC分类号： H02M1/36 , H02M3/335 , H02M1/08
CPC分类号： H02M1/36 , H02M1/08 , H02M3/335 , H02M3/33569 , H02M3/33592 , H02M2001/0006 , H02M2001/0009
摘要： A startup circuit is provided for establishing the Vcc voltage level of a switching power converter. The startup circuit uses a switch controller and path switching transistor to provide a two-stage Vcc capacitor charging that reduces startup time while avoiding short circuit damage through the alternate usage of a high impedance charging path and a low-impedance charging path.

6. 发明授权

US09288864B2 Adaptive holding current control for LED dimmer 有权
标题翻译：适用于LED调光器的保持电流控制
公开(公告)号：US09288864B2
公开(公告)日：2016-03-15
申请号：US14099986
申请日：2013-12-08
申请人： Dialog Semiconductor Inc.
发明人： Xiaoyan Wang , Chenglong Zhang , Guang Feng , Clarita Knoll , Chuanyang Wang , Jiang Chen , Liang Yan , Dickson T. Wong
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/0848 , H05B33/0845
摘要： A TRIAC dimmer controller for an LED lamp dynamically adjusts the amount of additional current supplied to the TRIAC dimmer based on the TRIAC dimmer operating mode. A TRIAC dimmer current controller continually senses the TRIAC dimmer current loading and determines a TRIAC dimmer operating mode based on the detected current. The TRIAC dimmer controller compares the detected current with a threshold current value called a TRIAC holding current, and adjusts the amount of bleeder current based on the difference between the detected current and the threshold current value. By continually sensing the TRIAC dimmer current loading, the LED controller regulates the amount of bleeder current supplied to the TRIAC dimmer using a single sink current path to satisfy the TRIAC dimmer current demands of multiple TRIAC dimmer operating modes.
摘要翻译：用于LED灯的TRIAC调光器控制器基于TRIAC调光器操作模式动态调节提供给TRIAC调光器的附加电流量。 TRIAC调光器电流控制器连续感测TRIAC调光器电流负载，并根据检测到的电流确定TRIAC调光器工作模式。 TRIAC调光器控制器将检测到的电流与称为TRIAC保持电流的阈值电流进行比较，并根据检测到的电流和阈值电流值之间的差值调整泄放电流的数量。通过连续感测TRIAC调光器电流负载，LED控制器使用单个灌电流通路来调节提供给TRIAC调光器的泄放电流量，以满足多个TRIAC调光器工作模式的TRIAC调光器电流要求。

7. 发明授权

US10333522B2 Selection of multiple configuration settings using a single configuration terminal 有权
公开(公告)号：US10333522B2
公开(公告)日：2019-06-25
申请号：US15826526
申请日：2017-11-29
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Guang Feng , Xiaoyan Wang , Nan Shi
IPC分类号： H03K19/177 , H03K19/0175 , H03K5/1532
摘要： A single configuration terminal of a device is used to configure multiple operating parameters of the device based on a resistor and a capacitor selectively connected to the configuration terminal. The device includes a detection circuit configured to monitor a voltage signal at the configuration terminal to determine multiple values in response to a regulated current source providing a current to the configuration terminal selectively connected to the resistor and the capacitor in parallel, and configure multiple operating parameters based on the determined values. A method for configuring operating parameters using a single configuration terminal of a device includes providing a current to the configuration terminal selectively connected to a resistor and a capacitor in parallel, monitoring a voltage signal at the configuration terminal, determining multiple values based on the monitoring, and configuring multiple operating parameter based on the determined values.

8. 发明授权

US09936547B2 Multi-mode control for solid state lighting 有权
公开(公告)号：US09936547B2
公开(公告)日：2018-04-03
申请号：US15509845
申请日：2015-09-15
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Xiaoyan Wang , Guang Feng , Nan Shi
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0806 , H05B33/0809 , H05B33/0818 , H05B33/083 , H05B33/0845 , H05B33/0884 , H05B33/0887 , Y02B20/347
摘要： A multi-mode control scheme for an LED lamp system uses the detected firing angle of an AC input voltage waveform to select from multiple regulation modes. In operation, a current controller compares the detected firing angle to one or more specified thresholds and selects the appropriate regulation scheme based on the comparison result. When the detected firing angle is less than a first firing angle threshold, the controller employs a current shaping regulation mode. When the detected firing angle is greater than a second firing angle threshold, the controller employs a switching cycle-I Peak modulation regulation mode. And when the detected firing angle is greater than the first firing angle threshold and less than the second firing angle threshold, the controller employs a hybrid regulation mode.

9. 发明授权

US09877367B2 Powering internal components of LED lamps using dissipative sources 有权
公开(公告)号：US09877367B2
公开(公告)日：2018-01-23
申请号：US15497632
申请日：2017-04-26
申请人： Dialog Semiconductor Inc.
发明人： Chuanyang Wang , Chenglong Zhang , Nan Shi , Clarita C. Knoll , Guang Feng
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , H05B33/0815 , H05B33/0851 , Y02B20/347
摘要： An LED lamp comprises one or more LEDs and an LED driver receiving an input signal from a dimmer switch indicative of an amount of dimming for the LED lamp. The LED driver controls regulated current through the one or more LEDs based on the input signal such that an output light intensity of the one or more LEDs substantially corresponds to the amount of dimming for the LED lamp. A regulated output provides operating power for the LED driver. A controller regulates the regulated output to power the LED driver. The controller selects a power source for charging the regulated output from two or more power sources, and the regulated output is charged using the power source selected by the controller.

10. 发明申请

US20170251532A1 MULTI-MODE CONTROL FOR SOLID STATE LIGHTING 有权
公开(公告)号：US20170251532A1
公开(公告)日：2017-08-31
申请号：US15509845
申请日：2015-09-15
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Xiaoyan Wang , Guang Feng , Nan Shi
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0806 , H05B33/0809 , H05B33/0818 , H05B33/083 , H05B33/0845 , H05B33/0884 , H05B33/0887 , Y02B20/347
摘要： A multi-mode control scheme for an LED lamp system uses the detected firing angle of an AC input voltage waveform to select from multiple regulation modes. In operation, a current controller compares the detected firing angle to one or more specified thresholds and selects the appropriate regulation scheme based on the comparison result. When the detected firing angle is less than a first firing angle threshold, the controller employs a current shaping regulation mode. When the detected firing angle is greater than a second firing angle threshold, the controller employs a switching cycle-I_Peak modulation regulation mode. And when the detected firing angle is greater than the first firing angle threshold and less than the second firing angle threshold, the controller employs a hybrid regulation mode.

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