-
1.发明授权Circuit and method for active crosstalk reduction in multiple-channel power supply controllers 有权多通道电源控制器中主动串扰降低的电路和方法公开(公告)号：US09590613B2
公开(公告)日：2017-03-07
申请号：US14742571
申请日：2015-06-17
Applicant: Microchip Technology Inc.
Inventor： Alexander Mednik , Rohit Tirumala , Marc Tan , Simon Krugly
CPC classification number: H03K17/162 , H02M1/08 , H02M3/1584 , H02M2003/1586
Abstract: A comparator sense input is disconnected from a current sense resistor for the duration of a switching transition in an adjacent channel(s). Instead, the sense input receives a signal of the magnitude and the slew rate sampled prior to the transition.
Abstract translation: 在相邻信道中的切换转换的持续时间内，比较器检测输入与电流检测电阻断开。 相反，感测输入接收在转换之前采样的幅度和转换速率的信号。
-
2.发明申请LED DRIVER WITH EXTENDED DIMMING RANGE AND METHOD FOR ACHIEVING THE SAME 审中-公开LED驱动器具有扩展的调光范围及其实现方法公开(公告)号：US20160212812A9
公开(公告)日：2016-07-21
申请号：US13756060
申请日：2013-01-31
Applicant: Microchip Technology, Inc.
Inventor： Alexander Mednik , Rohit Tirumala
IPC: H05B33/08
CPC classification number: H05B33/0839 , H05B33/0815 , H05B33/0848
Abstract: A circuit for powering of a Light Emitting Diode (LED) string has a switching power converter. A brightness control circuit is coupled to the switching power converter to allow a duration of a conductive state of the power converter to exceed a duration of a conductive state of the LED string for maintaining a current magnitude in the LED string constant.
Abstract translation: 用于为发光二极管（LED）串供电的电路具有开关功率转换器。 亮度控制电路耦合到开关功率转换器，以允许功率转换器的导通状态的持续时间超过LED串的导通状态的持续时间，以维持LED串中的电流幅值恒定。
-
公开(公告)号：US09337725B2
公开(公告)日：2016-05-10
申请号：US13947894
申请日：2013-07-22
Applicant: Microchip Technology, Inc.
Inventor： Alexander Mednik , Simon Krugly , Marc Tan
CPC classification number: H02M3/156 , H02M3/155 , H05B33/0818
Abstract: A switching power converter has an input voltage source. An output load is coupled to the input voltage source. An inductive element is coupled to the load. A switch is coupled to the inductive element. A control circuit is coupled to the switch and the inductive element for activating and deactivating the switch, the control circuit activating and deactivating the switch based on a negative voltage drop across a resistive element of the control circuit.
Abstract translation: 开关电源转换器具有输入电压源。 输出负载耦合到输入电压源。 电感元件耦合到负载。 开关耦合到电感元件。 控制电路耦合到开关和感应元件，用于启动和停用开关，控制电路基于控制电路的电阻元件上的负电压降激活和去激活开关。
-
公开(公告)号：US09658276B2
公开(公告)日：2017-05-23
申请号：US14743945
申请日：2015-06-18
Applicant: Microchip Technology Inc.
Inventor： Alexander Mednik , Rohit Tirumala , Marc Tan , Simon Krugly
CPC classification number: G01R31/2621 , G01R31/025 , H02H3/044 , H02H3/08 , H02H3/093
Abstract: A circuit and method are provided detecting a persistent short circuit in a power MOSFET for the purpose of protecting a load from over-current.
-
Patent Agency Ranking
公开(公告)号：US09866101B2
公开(公告)日：2018-01-09
申请号：US14984676
申请日：2015-12-30
Applicant: Microchip Technology Inc.
Inventor： Marc Tan , Alexander Mednik , Simon Krugly , Wilson Wai-Sum Chan
CPC classification number: H02M1/08 , H02M1/36 , H02M3/158 , H02M2001/0006 , H02M2001/0045
Abstract: The invention relates to methods for supplying current to an auxiliary power supply for the control circuit of a switching regulator. The auxiliary power supply is connected in parallel to a first switch of the switching regulator. The auxiliary power supply comprises a second switch. During the nonswitching stage of the switching regulator, the second switch has significant impedance so as to power up the auxiliary power supply gradually and to suppress the flow of large or oscillatory currents which may cause damage or create interference. During the switching stage of the switching regulator, the second switch has negligible impedance so as to avoid undue dissipation within the path for the supply of current.
-
公开(公告)号：US20160118874A1
公开(公告)日：2016-04-28
申请号：US14984676
申请日：2015-12-30
Applicant: Microchip Technology Inc.
Inventor： Marc Tan , Alexander Mednik , Simon Krugly , Wilson Wai-Sum Chan
CPC classification number: H02M1/08 , H02M1/36 , H02M3/158 , H02M2001/0006 , H02M2001/0045
Abstract: The invention relates to methods for supplying current to an auxiliary power supply, where the auxiliary supply is connected in parallel to a first switch of a switching regulator and the parallel connection of the auxiliary supply comprises a diode and a second switch.
Abstract translation: 本发明涉及向辅助电源供电的方法，其中辅助电源并联连接到开关调节器的第一开关，并且辅助电源的并联连接包括二极管和第二开关。
-
7.发明授权Low dropout light emitting diode (LED) ballast circuit and method therefor 有权低压差发光二极管（LED）镇流器电路及其方法公开(公告)号：US09041313B2
公开(公告)日：2015-05-26
申请号：US13871360
申请日：2013-04-26
Applicant: Microchip Technology, Inc.
Inventor： Alexander Mednik
CPC classification number: H05B33/0815 , H05B33/0818 , Y02B20/346
Abstract: A ballast circuit for a Light Emitting Diode (LED) has a regulator element coupled to the LED and to an input voltage source. A control circuit is coupled to the LED and to an input voltage source. A first switching device is coupled in series with the regulator element. A second switching device is coupled to the input voltage and the control circuit.
Abstract translation: 用于发光二极管（LED）的镇流器电路具有耦合到LED和输入电压源的调节器元件。 控制电路耦合到LED和输入电压源。 第一开关装置与调节器元件串联耦合。 第二开关器件耦合到输入电压和控制电路。
-
8.发明授权Cascode-type dimming switch using a bipolar junction transistor for driving a string of light emitting diodes 有权串联型调光开关，使用双极结型晶体管驱动一串发光二极管公开(公告)号：US09474118B2
公开(公告)日：2016-10-18
申请号：US14549433
申请日：2014-11-20
Applicant: Microchip Technology Inc.
Inventor： Alexander Mednik
IPC: H05B33/08
CPC classification number: H05B33/0845 , H05B33/0815 , H05B33/0818 , Y02B20/346
Abstract: The invention comprises a dimming switch for use with a string of light emitting diodes (LEDs). The dimming switch comprises a bipolar junction transistor (BJT) driven in a cascode scheme. The dimming switch also comprises circuitry to offset the current that drives the base of the BJT to provide a controlled amount of current to the LEDs when the dimming input signal is high.
Abstract translation: 本发明包括用于一串发光二极管（LED）的调光开关。 调光开关包括以共源共享方案驱动的双极结型晶体管（BJT）。 调光开关还包括用于抵消驱动BJT的基极的电流的电路，以在调光输入信号为高时向LED提供受控量的电流。
-
9.发明申请Cascode-type Dimming Switch Using A Bipolar Junction Transistor For Driving A String Of Light Emitting Diodes 有权使用双极结晶体管驱动一串发光二极管的串联型调光开关公开(公告)号：US20150145425A1
公开(公告)日：2015-05-28
申请号：US14549433
申请日：2014-11-20
Applicant: Microchip Technology Inc.
Inventor： Alexander Mednik
IPC: H05B33/08
CPC classification number: H05B33/0845 , H05B33/0815 , H05B33/0818 , Y02B20/346
Abstract: The invention comprises a dimming switch for use with a string of light emitting diodes (LEDs). The dimming switch comprises a bipolar junction transistor (BJT) driven in a cascode scheme. The dimming switch also comprises circuitry to offset the current that drives the base of the BJT to provide a controlled amount of current to the LEDs when the dimming input signal is high.
Abstract translation: 本发明包括用于一串发光二极管（LED）的调光开关。 调光开关包括以共源共享方案驱动的双极结型晶体管（BJT）。 调光开关还包括用于抵消驱动BJT的基极的电流的电路，以在调光输入信号为高时向LED提供受控量的电流。
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.014 seconds)
