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公开(公告)号：US11437842B2
公开(公告)日：2022-09-06
申请号：US16824813
申请日：2020-03-20
Applicant: SEIKO EPSON CORPORATION
Inventor： Katsumi Inoue , Kanji Aoki
Abstract: A power supply control device includes a charge circuit, a detection circuit, and a charge control circuit. The charge circuit charges a capacitor coupled to a power supply voltage node based on a full-wave rectified voltage. The charge control circuit enables a charge mode of the charge circuit when the detection circuit detects that a power supply voltage is less than a first threshold voltage. The charge control circuit disables the charge mode when the detection circuit detects that the power supply voltage reached a second threshold voltage. The charge control circuit sets a charge capacity of the charge circuit in a second charge mode period according to a length of a first charge mode period.
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公开(公告)号：US20200303941A1
公开(公告)日：2020-09-24
申请号：US16824813
申请日：2020-03-20
Applicant: SEIKO EPSON CORPORATION
Inventor： Katsumi INOUE , Kanji AOKI
Abstract: A power supply control device includes a charge circuit, a detection circuit, and a charge control circuit. The charge circuit charges a capacitor coupled to a power supply voltage node based on a full-wave rectified voltage. The charge control circuit enables a charge mode of the charge circuit when the detection circuit detects that a power supply voltage is less than a first threshold voltage. The charge control circuit disables the charge mode when the detection circuit detects that the power supply voltage reached a second threshold voltage. The charge control circuit sets a charge capacity of the charge circuit in a second charge mode period according to a length of a first charge mode period.
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公开(公告)号：US10560018B2
公开(公告)日：2020-02-11
申请号：US15668213
申请日：2017-08-03
Applicant: Infineon Technologies AG , pmdtechnologies ag
Inventor： Christoph Unterrieder , Franz Michael Darrer , Stefano Marsili
Abstract: Devices and methods are provided related to modulated power supplies. The device includes an inductor. When a load is to be supplied with power, a terminal of the inductor is coupled to the load. When the load is not to be supplied with power, terminals of the inductor may be coupled with each other.
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公开(公告)号：US20190305676A1
公开(公告)日：2019-10-03
申请号：US16126705
申请日：2018-09-10
Applicant: Texas Instruments Incorporated
Inventor： Stefan Dietrich , Joerg Kirchner , Ruediger Ganz
Abstract: A timer for creating a stable on time. The timer may have a reference voltage source, and an input voltage source. The voltage sources providing voltage that can be applied to a various circuit components such as capacitors, inductors, resistors, diodes, transistors, or other components. The reference voltage source may also be modified by a set of transistors coupled as a diode before being seen by an input of a timer comparator. The reference and input voltage source signals, which may be modified by circuit components, are compared by the timer comparator and then output as a timer control signal. The timer control signal may control a voltage converter, or the switches of a voltage converter.
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公开(公告)号：US10418909B1
公开(公告)日：2019-09-17
申请号：US16043336
申请日：2018-07-24
Applicant: Dialog Semiconductor (UK) Limited
Inventor： Mark Childs
Abstract: A DC-DC switching converter is described, with a high magnetic coupling ratio between coils connected directly to a supply and ground, and with pass-device switches connected directly to an output. The pass-device switches are driven in such a way that the coils are magnetized alternately. The DC-DC switching converter may use multiple output switches, to supply multiple outputs. The DC-DC switching converter may use different turns-ratio on the coils, to adjust the duty-cycle of the switching converter operates, for a given supply voltage to output voltage ratio.
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公开(公告)号：US20190125074A1
公开(公告)日：2019-05-02
申请号：US16158760
申请日：2018-10-12
Applicant: Chung-Sheng CHENG
Inventor： Chung-Sheng CHENG
Abstract: A smart desk includes a desk body and at least one desk leg. The desk body includes a desktop and a DC power supply installed on the desk body. In addition, the DC power supply includes a voltage adjustment unit connected thereto in order to adjust an output DC voltage value depending upon the needs. The desk leg is attached onto the bottom surface of the desk body for supporting thereof. Accordingly, the smart desk is able to provide the functions of reading, office working, item storage, and providing a DC power source.
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公开(公告)号：US20180041115A1
公开(公告)日：2018-02-08
申请号：US15668213
申请日：2017-08-03
Applicant: Infineon Technologies AG , pmdtechnologies ag
Inventor： Christoph UNTERRIEDER , Franz Michael DARRER , Stefano MARSILI
IPC: H02M3/137
Abstract: Devices and methods are provided related to modulated power supplies. The device includes an inductor. When a load is to be supplied with power, a terminal of the inductor is coupled to the load. When the load is not to be supplied with power, terminals of the inductor may be coupled with each other.
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公开(公告)号：US08803497B2
公开(公告)日：2014-08-12
申请号：US13505947
申请日：2010-01-07
Applicant: Noriyuki Wada , Katsuyuki Sumimoto , Junya Sasaki
Inventor： Noriyuki Wada , Katsuyuki Sumimoto , Junya Sasaki
IPC: H02M3/137
CPC classification number: G01R19/0092 , G01R19/2506 , H02M2001/0009
Abstract: A current detector of an inductive load includes: an inductive load 100; a switching element 101 connected in series with the inductive load and controls an electric current to be carried through this inductive load by ON/OFF operation; a current circulating diode 102 connected in parallel with the inductive load and circulates an electric current of the inductive load when the switching element is OFF; current detecting device 103 making a sampling in a cycle of a predetermined sampling period to detect an electric current to be carried through the switching element 101; and current correction device 104 making a correction with respect to an electric current value having been detected at the current detector, and in which the current correction device 104 changes the correction rate based on DUTY of a pulse with which the switching element is brought in ON/OFF operation.
Abstract translation: 电感负载的电流检测器包括：感性负载100; 与感性负载串联连接的开关元件101，通过ON / OFF动作控制通过该感性负载的电流; 与感性负载并联连接的电流循环二极管102，在开关元件断开时使感性负载的电流循环; 电流检测装置103以预定采样周期的周期进行采样，以检测要通过开关元件101传送的电流; 和电流校正装置104相对于在电流检测器检测到的电流值进行校正，并且其中当前校正装置104基于开关元件导通的脉冲的DUTY改变校正速率 / OFF操作。
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公开(公告)号：US20100177538A1
公开(公告)日：2010-07-15
申请号：US12354250
申请日：2009-01-15
Applicant: Wolfgang Scherr
Inventor： Wolfgang Scherr
CPC classification number: G01R23/02 , B60R21/0173 , G01R31/28 , G01R31/40
Abstract: In one embodiment, a method of verifying a component coupled to an output of a power supply includes measuring a frequency response from a control input of the power supply to the output of the power supply. The method also includes comparing the frequency response to a predetermined metric based on the measuring. The component is determined to be valid if the frequency response falls within the predetermined metric.
Abstract translation: 在一个实施例中，验证耦合到电源的输出的部件的方法包括测量从电源的控制输入到电源的输出的频率响应。 该方法还包括基于测量将频率响应与预定度量进行比较。 如果频率响应落在预定度量内，则该分量被确定为有效。
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10.发明申请
公开(公告)号：US20080100232A1
公开(公告)日：2008-05-01
申请号：US11883016
申请日：2006-01-25
Applicant: Mitsuaki Miguchi
Inventor： Mitsuaki Miguchi
CPC classification number: H05B33/0827 , G09G3/3413 , H05B33/0818 , Y02B20/346 , Y10T307/406 , Y10T307/461
Abstract: In the power supply apparatus, a voltage booster circuit supplies a drive voltage (Vout) to a plurality of light emitting diodes. A drive controller controls a driving state, that is, light emission intensity, of each of the plurality of light emitting diodes. The drive controller drives the plurality of load circuits in a time division manner, the voltage booster circuit is provided with an enabling terminal, and a switching operation is halted during a non-light-emission period in which none of the light emitting diodes is driven by the drive controller. A light emission pattern generator generates light emission control signals which direct light emission of each of the light emitting diodes. The voltage booster circuit halts a switching operation in a non-light-emission period in which none of the light emitting diodes emits light, by a logical operation on the light emission control signals.
Abstract translation: 在电源装置中，升压电路向多个发光二极管供给驱动电压（Vout）。 驱动控制器控制多个发光二极管中的每一个的驱动状态，即发光强度。 驱动控制器以时分方式驱动多个负载电路，升压电路设置有使能端子，并且在不发光二极管被驱动的非发光时段期间停止开关操作 由驱动控制器。 发光图案发生器产生引导每个发光二极管发光的发光控制信号。 通过对发光控制信号的逻辑运算，升压电路在不发光二极管发光的非发光时段中停止开关动作。
