-
Patent Agency Ranking
21.发明授权公开(公告)号：US11646654B2
公开(公告)日：2023-05-09
申请号：US17244933
申请日：2021-04-29
Applicant: Richtek Technology Corporation
Inventor： Kuo-Chi Liu , Ta-Yung Yang , Chung-Lung Pai
Abstract: A resonant switching power converter includes: capacitors; switches; at least one charging inductor; at least one discharging inductor; a controller generating a charging operation signal corresponding to charging process and discharging operation signals corresponding to discharging processes, to operate the switches to switch electrical connection relationships of the capacitors. In the charging process, the controller controls the switches via the charging operation signal, so that a series connection of the capacitors and the charging inductor is formed between the input voltage and the output voltage, which forms a charging path. In the discharging processes, the controller controls the switches via the discharging operation signals, so that a series connection of one of the capacitors and the discharging inductor is formed between the output voltage and a ground voltage level, to form plural discharging paths at different periods in a sequential order.
-
公开(公告)号：US11601048B2
公开(公告)日：2023-03-07
申请号：US17361866
申请日：2021-06-29
Applicant: Richtek Technology Corporation
Inventor： Kuo-Chi Liu , Ta-Yung Yang , Chung-Lung Pai
Abstract: A resonant switching power converter includes: capacitors, switches, at least one charging inductor, at least one discharging inductor and a pre-charging circuit. The pre-charging circuit controls a first switch of the switches when the resonant switching power converter operates in a pre-charging mode, to control an electrical connection relationship between the input voltage and a first capacitor of the capacitors and to control other capacitors of the capacitors, thus controlling the capacitors to be connected in parallel to one another or to be connected in series to one another, so that when a voltage drop across the first capacitor is lower than a predetermined voltage, the voltage drop across each capacitor is charged to the predetermined voltage. After operating in the pre-charging mode, the resonant switching power converter subsequently operates in a resonant voltage conversion mode, to thereby convert an input voltage to an output voltage.
-
公开(公告)号：US20220368218A1
公开(公告)日：2022-11-17
申请号：US17719568
申请日：2022-04-13
Applicant: Richtek Technology Corporation
Inventor： Kuo-Chi Liu , Ta-Yung Yang , Chung-Lung Pai
Abstract: A resonant switching power converter circuit including: a switching converter, a control circuit and a pre-charging circuit; wherein the control circuit controls a first switch of the switching converter in a pre-charging mode, so as to control electrical connections between a first power and at least one of plural capacitors of the switching converter, and to control other switches of the switching converter, so as to control the pre-charging circuit to charge at least one capacitor to a predetermined voltage; wherein in a start-up mode, the plural switches control electrical connections of the capacitors according to first and second operation signals, such that after the pre-charging mode ends, the switching converter subsequently operates in the start-up mode; wherein in the start-up mode, the first and second operation signals have respective ON periods, and the time lengths of the ON periods increase gradually.
-
公开(公告)号：US20210367511A1
公开(公告)日：2021-11-25
申请号：US17325689
申请日：2021-05-20
Applicant: Richtek Technology Corporation
Inventor： Kuo-Chi Liu , Ta-Yung Yang , Chung-Lung Pai
Abstract: A switched capacitor converter circuit includes: plural capacitors and plural switches which periodically switch the coupling relationships of the plural capacitors. During a first period, the switches control at least two of the capacitors to be electrically connected in series between the first power and the second power, and control a first capacitor of the capacitors to be electrically connected in parallel to the second power. During a second period, the switches control at least two of the capacitors to be electrically connected in series between the second power and a ground voltage level, and control a second capacitor of the capacitors to be electrically connected in parallel with the second power, thereby executing power conversion between the first power and the second power.
-
公开(公告)号：US09041374B2
公开(公告)日：2015-05-26
申请号：US14206877
申请日：2014-03-12
Applicant: Richtek Technology Corporation
Inventor： Hung-Yu Cheng , Chung-Lung Pai , Tzu Huan Chiu , Chien-Ping Lu
CPC classification number: H02M3/156 , H02M3/1588 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
Abstract: A power converting circuit includes an upper gate switch, a transistor, a current source circuit, a comparator circuit, a delay circuit, and a pulse width modulation signal generating circuit. The transistor and the current source circuit provide a reference signal. The comparator circuit generates a comparing signal according to the reference signal and an output signal provided by the upper gate switch. The delay circuit generates a delay signal according to the comparing signal and a clock signal. The pulse width modulation signal generating circuit generates a control signal for the upper gate switch according to the delay signal and the clock signal for configuring the conduction status of the upper gate switch. The power converting circuit adjusts the conduction time of the upper gate switch according to the reference signal and the output signal.
Abstract translation: 电源转换电路包括上栅极开关，晶体管，电流源电路，比较器电路，延迟电路和脉宽调制信号发生电路。 晶体管和电流源电路提供参考信号。 比较器电路根据参考信号和由上部门极开关提供的输出信号产生比较信号。 延迟电路根据比较信号和时钟信号产生延迟信号。 脉冲宽度调制信号发生电路根据延迟信号产生用于上部栅极开关的控制信号和用于构成上部栅极开关的导通状态的时钟信号。 功率转换电路根据参考信号和输出信号调节上部栅极开关的导通时间。
-
-
-
-
Search Results
25
records
(took 0.019 seconds)
