-
公开(公告)号：US10476275B2
公开(公告)日：2019-11-12
申请号：US15284643
申请日：2016-10-04
发明人： Chang-Yu Wu , Yi-Wei Lee
摘要： The present invention provides a multi-load control apparatus, a slave circuit and a control method thereof. The multi-load control apparatus includes a master circuit and at least one slave circuit. The master circuit generates at least one pulse width modulation (PWM) signal according to an input signal. The slave circuit controls a power switch according to a corresponding PWM signal. The slave circuit has a primary side circuit and a secondary side circuit. The primary side circuit generates an AC PWM signal according to the corresponding PWM signal. The power switch has a control terminal which is driven according to a floating ground level which is not a constant voltage level. The power switch has a current inflow terminal and a current outflow terminal, which are connected to a corresponding load circuit in series, wherein the series circuit of the power switch and the load circuit receives an AC voltage.
-
公开(公告)号：US09907128B2
公开(公告)日：2018-02-27
申请号：US15454424
申请日：2017-03-09
发明人： Chang-Yu Wu , Wei-Ming Chiu
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0824 , H05B33/0827 , H05B33/083 , H05B33/0842 , H05B33/0857 , H05B33/0887 , Y02B20/341
摘要： A control chip of a driving circuit for driving a LED array shares a ground terminal with the LED array so that, without an additional winding, the driving circuit can provide a supply voltage for the control chip, implement a zero-current switching function, and implement an over-voltage protection function. Since no additional windings are needed, the related costs and the size of the driving circuit are decreased.
-
公开(公告)号：US09680369B2
公开(公告)日：2017-06-13
申请号：US14547870
申请日：2014-11-19
发明人： Chang-Yu Wu , Tzu-Chen Lin
IPC分类号： H02M1/42
CPC分类号： H02M3/33507 , H02M1/083 , H02M1/12 , H02M1/42 , H02M1/4225 , H02M1/4258 , H02M2001/0009 , Y02B70/126 , Y02P80/112
摘要： A power factor correction (PFC) circuit of a power converter is disclosed. The power converter includes a primary side coil, a secondary side coil, an inductive coil, and a power switch. The PFC circuit includes a zero current detection circuit for detecting an inductive signal of the inductive coil to generate a detection signal; an error detection circuit for generating an error signal corresponding to an output voltage signal or an output current signal according to a reference signal; a ramp signal generating circuit for generating a ramp signal; a comparison circuit for comparing the ramp signal with the error signal to generate a comparison signal; and a trigger circuit for generating a control signal to control the power switch and for controlling the ramp signal generating circuit to adjust a slope of the ramp signal according to the detection signal and the comparison signal.
-
4.发明申请FLYBACK POWER CONVERTER, SECONDARY SIDE CONTROL CIRCUIT, AND CONTROL METHOD THEREOF 有权反相电源转换器，二次侧控制电路及其控制方法公开(公告)号：US20160141966A1
公开(公告)日：2016-05-19
申请号：US14943662
申请日：2015-11-17
发明人： Chun-Shih Huang , Chang-Yu Wu , Pei-Yuan Chen
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M1/4258 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/126 , Y02B70/16
摘要： The present invention provides a flyback power converter, a secondary side control circuit, and a control method thereof. The flyback power converter converts an input voltage to an output voltage, and provides a load current to a load circuit. The flyback power converter includes: a transformer circuit, a power switch circuit, a switch current sense circuit, a primary side control circuit, and a secondary side control circuit. The secondary side control circuit adaptively adjusts a frequency of a zero of a compensator gain function and/or a mid-frequency gain of the compensator gain function according to the load current, such that a number of poles of a system open loop gain function of the flyback power converter is at most more than a number of zeroes of the system open loop gain function by one under a crossover frequency.
摘要翻译： 本发明提供一种反激式功率转换器，次级侧控制电路及其控制方法。 反激式功率转换器将输入电压转换为输出电压，并向负载电路提供负载电流。 反激式功率转换器包括：变压器电路，电源开关电路，开关电流检测电路，初级侧控制电路和次级侧控制电路。 次级侧控制电路根据负载电流自适应地调整补偿器增益功能的零频率和/或补偿器增益功能的中频增益，使得系统开环增益功能的极数为 反激式功率转换器在系统开环增益功能下最多不超过一个零的交叉频率。
-
公开(公告)号：US20210029791A1
公开(公告)日：2021-01-28
申请号：US16844947
申请日：2020-04-09
发明人： Wei-Hsu Chang , Chang-Yu Wu
IPC分类号： H05B45/10 , H05B47/19 , H05B45/375 , H05B45/385 , H05B45/382 , H05B45/38
摘要： A lighting system includes: a power supply circuit, an AC-DC converter circuit and a wireless communication module. The wireless communication module receives an external command from a wireless communication device and generates an adjustment command according to the received external command. The adjustment command includes a luminance adjustment command and a driving power control command. The power supply circuit includes a power stage and a conversion controller circuit. The conversion controller circuit supplies a adjustable output voltage to the wireless communication module, to power the wireless communication module. The conversion controller circuit controls the power stage according to the luminance adjustment command, to adjust an output current of an output power, thereby adjusting the luminance of a light emission device. And, the conversion controller circuit controls the adjustable output voltage according to the driving power control command, to regulate the adjustable output voltage to a high voltage level or a low voltage level.
-
公开(公告)号：US10171001B2
公开(公告)日：2019-01-01
申请号：US15415360
申请日：2017-01-25
发明人： Chang-Yu Wu , Tzu-Chen Lin
摘要： An AC-to-DC power converter includes a rectifier for generating a rectified voltage based on an AC voltage; an input capacitor coupled between the rectifier and a fixed-voltage terminal; a first inductive element; a first auxiliary capacitor; a first switch coupled between the input capacitor and the first inductive element; a second switch coupled between the first inductive element and the fixed-voltage terminal; a circuitry node; an auxiliary switch for coupling between the circuitry node and the first auxiliary capacitor or between the first auxiliary capacitor and the fixed-voltage terminal; a first diode; a second diode; a control signal generating circuit for controlling the first switch and the second switch; and an auxiliary switch control circuit for controlling the auxiliary switch.
-
7.发明授权Flyback power converter, secondary side control circuit, and control method thereof 有权反激式电力转换器，二次侧控制电路及其控制方法公开(公告)号：US09564815B2
公开(公告)日：2017-02-07
申请号：US14943662
申请日：2015-11-17
发明人： Chun-Shih Huang , Chang-Yu Wu , Pei-Yuan Chen
CPC分类号： H02M3/33523 , H02M1/4258 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/126 , Y02B70/16
摘要： The present invention provides a flyback power converter, a secondary side control circuit, and a control method thereof. The flyback power converter converts an input voltage to an output voltage, and provides a load current to a load circuit. The flyback power converter includes: a transformer circuit, a power switch circuit, a switch current sense circuit, a primary side control circuit, and a secondary side control circuit. The secondary side control circuit adaptively adjusts a frequency of a zero of a compensator gain function and/or a mid-frequency gain of the compensator gain function according to the load current, such that a number of poles of a system open loop gain function of the flyback power converter is at most more than a number of zeroes of the system open loop gain function by one under a crossover frequency.
摘要翻译： 本发明提供一种反激式功率转换器，次级侧控制电路及其控制方法。 反激式功率转换器将输入电压转换为输出电压，并向负载电路提供负载电流。 反激式功率转换器包括：变压器电路，电源开关电路，开关电流检测电路，初级侧控制电路和次级侧控制电路。 次级侧控制电路根据负载电流自适应地调整补偿器增益功能的零频率和/或补偿器增益功能的中频增益，使得系统开环增益功能的极数为 反激式功率转换器在系统开环增益功能下最多不超过一个零的交叉频率。
-
公开(公告)号：US11304272B2
公开(公告)日：2022-04-12
申请号：US16844947
申请日：2020-04-09
发明人： Wei-Hsu Chang , Chang-Yu Wu
IPC分类号： H05B45/10 , H05B47/19 , H05B45/375 , H05B45/382 , H05B45/38 , H05B45/385 , H05B45/3725 , H05B45/395
摘要： A lighting system includes: a power supply circuit, an AC-DC converter circuit and a wireless communication module. The wireless communication module receives an external command from a wireless communication device and generates an adjustment command according to the received external command. The adjustment command includes a luminance adjustment command and a driving power control command. The power supply circuit includes a power stage and a conversion controller circuit. The conversion controller circuit supplies a adjustable output voltage to the wireless communication module, to power the wireless communication module. The conversion controller circuit controls the power stage according to the luminance adjustment command, to adjust an output current of an output power, thereby adjusting the luminance of a light emission device. And, the conversion controller circuit controls the adjustable output voltage according to the driving power control command, to regulate the adjustable output voltage to a high voltage level or a low voltage level.
-
公开(公告)号：US20170338663A1
公开(公告)日：2017-11-23
申请号：US15284643
申请日：2016-10-04
发明人： Chang-Yu Wu , Yi-Wei Lee
摘要： The present invention provides a multi-load control apparatus, a slave circuit and a control method thereof. The multi-load control apparatus includes a master circuit and at least one slave circuit. The master circuit generates at least one pulse width modulation (PWM) signal according to an input signal. The slave circuit controls a power switch according to a corresponding PWM signal. The slave circuit has a primary side circuit and a secondary side circuit. The primary side circuit generates an AC PWM signal according to the corresponding PWM signal. The power switch has a control terminal which is driven according to a floating ground level which is not a constant voltage level. The power switch has a current inflow terminal and a current outflow terminal, which are connected to a corresponding load circuit in series, wherein the series circuit of the power switch and the load circuit receives an AC voltage.
-
公开(公告)号：US09629210B2
公开(公告)日：2017-04-18
申请号：US15047154
申请日：2016-02-18
发明人： Chang-Yu Wu , Wei-Ming Chiu
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0824 , H05B33/0827 , H05B33/083 , H05B33/0842 , H05B33/0857 , H05B33/0887 , Y02B20/341
摘要： A control chip of a driving circuit for driving a LED array shares a ground terminal with the LED array so that, without an additional winding, the driving circuit can provide a supply voltage for the control chip, implement a zero-current switching function, and implement an over-voltage protection function. Since no additional windings are needed, the related costs and the size of the driving circuit are decreased.
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.016 秒)
