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1. 发明授权

US10958177B2 Optocoupler current transfer ratio compensation 有权
公开(公告)号：US10958177B2
公开(公告)日：2021-03-23
申请号：US16428771
申请日：2019-05-31
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Tao Li , Pengju Kong , Juyoung Yoon , Qingqing Zong
IPC分类号： H02M3/335
摘要： A flyback converter is disclosed having a secondary side controller that generates an input current for an optocoupler diode by driving a variable resistor with a control voltage. The secondary side controller varies a variable resistance for the variable resistor to compensate for current transfer ratio gain variations for the optocoupler.

2. 发明授权

US10530260B2 Adaptive control for zero-voltage switching in a multi-switch switching power converter 有权
公开(公告)号：US10530260B2
公开(公告)日：2020-01-07
申请号：US15876054
申请日：2018-01-19
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Wenduo Liu , Cong Zheng , Xiaoyan Wang , Pengju Kong
IPC分类号： H02M3/335 , H02M1/00
摘要： A switching power converter is provided that adaptively changes the on-time period for an auxiliary switch transistor to locate a boundary between sufficient and insufficient energy.

3. 发明授权

US10084382B2 Adaptive valley mode switching 有权
公开(公告)号：US10084382B2
公开(公告)日：2018-09-25
申请号：US15825042
申请日：2017-11-28
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Pengju Kong , Hien Bui , Duc Doan , Cong Zheng
IPC分类号： H02M3/158 , H02M1/44 , H02M3/335
CPC分类号： H02M3/1582 , H02M1/44 , H02M3/156 , H02M3/335 , H02M3/33523 , Y02B70/1425 , Y02B70/1433
摘要： An adaptive valley mode switching power converter is provided that switches on a power switch within valley periods of a resonant voltage oscillation for the power switch. Each valley period is determined with regard to a valley threshold voltage.

4. 发明授权

US10079548B2 Synchronous rectifier control with adaptive minimum off-time 有权
公开(公告)号：US10079548B2
公开(公告)日：2018-09-18
申请号：US15413042
申请日：2017-01-23
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Pengju Kong , Hien Bui , Hanguang Zhang
IPC分类号： H02M3/335 , H02M1/08 , H02M1/00
CPC分类号： H02M3/33592 , H02M1/08 , H02M2001/0048 , H02M2001/0054 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
摘要： A switching power converter may include a power switch coupled to a primary winding of a transformer, and a primary controller configured to turn on and off the power switch, a synchronous rectifier switch coupled to a secondary winding of a transformer, and a synchronous rectifier controller configured to turn on and off the synchronous rectifier switch. The synchronous rectifier controller may monitor a voltage across the synchronous rectifier switch. The synchronous rectifier controller may determine a period of a resonant oscillation of the voltage across the synchronous rectifier switch following at least one cycling off of the synchronous rectifier switch. The synchronous rectifier controller may adjust the minimum off-time period for the synchronous rectifier switch based on the period of the resonant oscillation. The synchronous rectifier controller may adaptively adjust a minimum off-time period for the synchronous rectifier switch.

5. 发明申请

US20170317600A1 AUXILIARY WINDING GROUND FAULT DETECTION FOR ISOLATED DC/DC CONVERTER 有权
公开(公告)号：US20170317600A1
公开(公告)日：2017-11-02
申请号：US15583800
申请日：2017-05-01
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Pengju Kong , Duc Doan , Fuqiang Shi
IPC分类号： H02M3/335 , H02M1/08 , H02M1/00
CPC分类号： H02M3/33523 , H02M1/08 , H02M1/32 , H02M2001/0003
摘要： A flyback converter is provided with a controller that is configured to analyze the reflected feedback voltage waveforms to determine the presence of a ground connection fault for the auxiliary winding.

6. 发明授权

US09543819B2 Adaptive BJT driver for switching power converter 有权
标题翻译：用于开关电源转换器的自适应BJT驱动器
公开(公告)号：US09543819B2
公开(公告)日：2017-01-10
申请号：US14584676
申请日：2014-12-29
申请人： Dialog Semiconductor Inc.
发明人： Pengju Kong , Hien Bui , Duc Doan , John Shi , Judy Sha
IPC分类号： H02M1/08 , H02M3/335 , H02M1/00
CPC分类号： H02M1/08 , H02M3/33523 , H02M2001/0054 , Y02B70/1491
摘要： A flyback converter is provided that includes a base driver for driving a base current into a base of a BJT power switch. The base driver is controlled so as to adaptively vary the base current across at least some of the pulses.
摘要翻译：提供了一种反激转换器，其包括用于将基极电流驱动到BJT功率开关的基极的基极驱动器。控制基极驱动器以便跨越至少一些脉冲自适应地改变基极电流。

7. 发明申请

US20160028313A1 Secondary-Side Dynamic Load Detection and Communication Device 有权
标题翻译：次级动态负载检测和通信设备
公开(公告)号：US20160028313A1
公开(公告)日：2016-01-28
申请号：US14340482
申请日：2014-07-24
申请人： Dialog Semiconductor Inc.
发明人： Pengju Kong , Yong Li
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/08 , H02M3/33592 , H02M2001/0009 , H02M2001/0032 , Y02B70/16
摘要： A switching power converter provides regulated voltage to a load. The switching power converter comprises a transformer including a primary winding coupled to an input voltage and a secondary winding coupled to an output of the switching power converter. The switching power converter further comprises a power switch coupled to the primary winding and a rectifier coupled to the secondary winding. Current is generated in the primary winding responsive to the power switch being turned on and not generated responsive to the power switch being turned off. A detection circuit measures a voltage across the rectifier. If the detection circuit detects a decrease in the voltage across the rectifier outside of a blanking period, the detection circuit generates a current pulse in the secondary winding of the transformer.
摘要翻译：开关电源转换器为负载提供稳压电压。开关功率转换器包括变压器，其包括耦合到输入电压的初级绕组和耦合到开关功率转换器的输出的次级绕组。开关功率转换器还包括耦合到初级绕组的功率开关和耦合到次级绕组的整流器。响应于电源开关导通而在初级绕组中产生电流，并且响应于电源开关被关闭而不产生电流。检测电路测量整流器两端的电压。如果检测电路检测到在消隐期之外的整流器两端的电压的降低，则检测电路在变压器的次级绕组中产生电流脉冲。

8. 发明授权

US11626803B2 Adaptive control for zero-voltage switching in a multi-switch switching power converter 有权
公开(公告)号：US11626803B2
公开(公告)日：2023-04-11
申请号：US16735069
申请日：2020-01-06
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Wenduo Liu , Cong Zheng , Xiaoyan Wang , Pengju Kong
IPC分类号： H02M3/335 , H02M1/00 , H02M3/00
摘要： A switching power converter is provided that adaptively changes the on-time period for an auxiliary switch transistor to locate a boundary between sufficient and insufficient energy.

9. 发明授权

US11601061B2 System for turning off a synchronous rectifier based on a primary switch turn-on detection 有权
公开(公告)号：US11601061B2
公开(公告)日：2023-03-07
申请号：US16784108
申请日：2020-02-06
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Pengju Kong , Qingqing Zong
IPC分类号： H02M3/335 , H02M1/00
摘要： A system for turning off a synchronous rectifier (SR) based on a primary switch (PS) turn-on detection in a flyback converter having a primary-side and a secondary-side is disclosed. The system comprises the PS on the primary-side, the SR on the secondary-side, a spike detector, and a SR controller. The SR is configured to produce a drain-to-source voltage (VDS). The spike detector is in signal communication with an output capacitor (Cout) on the secondary-side and the spike detector is configured to detect a voltage spike of an output voltage (VOut) across the Cout that is indicative of the PS being turned-on. The SR controller is in signal communication with the SR and the spike detector and the SR controller is configured to turn-off the SR based on the spike detector detecting the voltage spike of the VOut.

10. 发明授权

US11223284B2 System and method for determining a primary switching event in an isolated converter 有权
公开(公告)号：US11223284B2
公开(公告)日：2022-01-11
申请号：US16779459
申请日：2020-01-31
申请人： DIALOG SEMICONDUCTOR INC.
发明人： Kuangzhe Xu , Pengju Kong , Jiandong Zhang , Hien Bui
IPC分类号： H02M3/335
摘要： Disclosed is a system for determining a primary switching event in an isolated converter having a primary-side and a secondary-side. The system includes a primary-switch (PS) on the primary-side, a synchronous rectifier (SR) on the secondary-side, an integration circuit, and a SR controller. The integration circuit is in signal communication with the SR on the secondary-side and the SR controller is in signal communication with the SR and the integration circuit. The SR is configured to produce a drain-to-source voltage (VDS) and the integration circuit is configured to integrate a difference between the VDS and a output voltage (VOut) (produced by the secondary-side) over time to produce a VDS over time value (VTime). The SR controller is configured to determine if the VDS is greater than a first threshold voltage (VTH) and determine the primary switching event when the VTime is greater than a second threshold voltage (VSTH).

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