公开(公告)号：US20160380552A1

公开(公告)日：2016-12-29

申请号：US15196348

申请日：2016-06-29

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Bonggeun CHUNG ,  SangCheol MOON ,  Chenghao JIN ,  Gwanbon KOO

IPC分类号： H02M7/06 ,  G01R19/04 ,  H02M1/08

CPC分类号： H02M3/158 ,  G01R19/04 ,  H02M1/36 ,  H02M1/44 ,  H02M3/156 ,  H02M7/04 ,  H02M7/217 ,  H02M2001/0009 ,  H02M2001/0048 ,  H02M2001/0054 ,  H02M2001/0058 ,  Y02B70/1491

摘要： Provided are an input voltage detection circuit and a power supply including the same. The power supply includes a rectifier circuit configured to generate a line input voltage by rectifying an alternating current (AC) input. The input voltage detection circuit which is applied to the power supply generates a peak sensing voltage that indicates a predetermined peak area defined around a peak of the line input voltage, generates a peak detection signal that indicates the peak of the line input voltage based on a center of the peak sensing voltage, and generates an input sensing voltage corresponding to the line input voltage by being synchronized with the peak detection signal. The power supply may control a switching period according to the input sensing voltage.

摘要翻译： 提供一种输入电压检测电路和包括该输入电压检测电路的电源。 电源包括整流电路，其被配置为通过整流交流（AC）输入来产生线路输入电压。 施加到电源的输入电压检测电路产生峰值感测电压，其表示围绕线路输入电压的峰值限定的预定峰值面积，生成表示基于线路输入电压的峰值的峰值检测信号 峰值感测电压的中心，并且通过与峰值检测信号同步来生成与线路输入电压相对应的输入感测电压。 电源可以根据输入感测电压来控制开关周期。

公开(公告)号：US20160380542A1

公开(公告)日：2016-12-29

申请号：US15196678

申请日：2016-06-29

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： SangCheol MOON ,  Gwanbon KOO ,  Chenghao JIN ,  Bonggeun CHUNG

IPC分类号： H02M3/158 ,  H02M1/44 ,  H02M7/04 ,  H02M1/08

CPC分类号： H02M3/158 ,  G01R19/04 ,  H02M1/36 ,  H02M1/44 ,  H02M3/156 ,  H02M7/04 ,  H02M7/217 ,  H02M2001/0009 ,  H02M2001/0048 ,  H02M2001/0054 ,  H02M2001/0058 ,  Y02B70/1491

摘要： A buck converter includes a power switch having one end to which an input voltage is transferred, a synchronous switch connected between the other end of the power switch and the ground, an inductor having an end connected to the other end of the power switch, and a switch control circuit configured to calculate a zero voltage delay time based on at least an ON time of the power switch and a delay time. The delay time is determined based on the inductor and parasitic capacitors of the power switch and the synchronous switch.

摘要翻译： 降压转换器包括具有输入电压的一端的电源开关，连接在电源开关的另一端与地之间的同步开关，一端连接到电源开关的另一端的电感器，以及 开关控制电路，被配置为基于至少电源​​开关的接通时间和延迟时间来计算零电压延迟时间。 延时时间取决于电源开关和同步开关的电感和寄生电容。

公开(公告)号：US09461548B2

公开(公告)日：2016-10-04

申请号：US14211635

申请日：2014-03-14

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Won-Tae Lee ,  Kyung-Oun Jang ,  Sung-Won Yun ,  Min-Woo Lee

IPC分类号： H02M1/32 ,  H02M3/335 ,  H02M1/00 ,  G01R31/02

CPC分类号： H02M3/33507 ,  G01R31/025 ,  H02M1/32 ,  H02M2001/0009

摘要： Embodiment relates to a switch control circuit, a switch control method, and a power supply using the switch control circuit. The power supply supplies power to a load using an input voltage. The switch control circuit controls a switching operation of the power switch that controls the power supply. The switch control circuit detects a duty of the power switch using a signal for controlling the switching operation of the power switch, detects the load using the feedback voltage, and determines a short-circuit of the sense resistor according to the detected duty and the detected load.

摘要翻译： 实施例涉及开关控制电路，开关控制方法和使用开关控制电路的电源。 电源使用输入电压为负载供电。 开关控制电路控制控制电源的电源开关的切换动作。 开关控制电路使用用于控制电源开关的开关操作的信号来检测电力开关的占空比，使用反馈电压检测负载，并根据检测到的占空比确定检测电阻器的短路，并且检测到 加载。

公开(公告)号：US20160071837A1

公开(公告)日：2016-03-10

申请号：US14845939

申请日：2015-09-04

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Sun-hak LEE ,  Yong Zhong HU ,  Hye-mi KIM

IPC分类号： H01L27/06 ,  H01L29/10 ,  H01L29/06 ,  H01L29/861 ,  H01L29/808

CPC分类号： H01L27/0629 ,  H01L29/0692 ,  H01L29/1075 ,  H01L29/1095 ,  H01L29/66128 ,  H01L29/66901 ,  H01L29/808 ,  H01L29/8611

摘要： A power semiconductor device includes a diode part disposed in a first region of a substrate, a junction field effect transistor (JFET) part disposed in a second region adjacent to the first region of the substrate, an anode terminal disposed on the first region of the substrate, and a cathode terminal disposed on the second region of the substrate. The diode part includes a p-type body region disposed inside the substrate and electrically connected with the anode terminal, an n-type well disposed on one side of the p-type body region and having a first impurity concentration, and a first n-type semiconductor region disposed below the p-type body region and having a second impurity concentration which is lower than the first impurity concentration.

摘要翻译： 功率半导体器件包括设置在衬底的第一区域中的二极管部分，设置在与衬底的第一区域相邻的第二区域中的结场效应晶体管（JFET）部分，阳极端子设置在衬底的第一区域上 衬底和设置在衬底的第二区域上的阴极端子。 二极管部分包括设置在基板内并与阳极端子电连接的p型体区，设置在p型体区一侧并具有第一杂质浓度的n型阱， 型半导体区域，其配置在p型体区域的下方，具有比第一杂质浓度低的第二杂质浓度。

公开(公告)号：US20160006360A1

公开(公告)日：2016-01-07

申请号：US14853525

申请日：2015-09-14

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Hyun-Chul EUM ,  Young-Jong KIM ,  In-Ki PARK

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/4258 ,  Y02B70/126

摘要： A power supply device according to the present invention includes: a filter capacitor coupled to a line to which an input voltage that is passed through a dimmer is supplied; a discharge switch coupled to the filter capacitor through the line; and a main switch receiving the input voltage and controlling power transmission. The power supply device performs input voltage control for shaping the input voltage with a predetermined pattern using the discharge switch.

摘要翻译： 根据本发明的电源装置包括：滤波电容器，被耦合到提供通过调光器的输入电压的线路; 放电开关，通过线耦合到滤波电容器; 以及接收输入电压并控制电力传输的主开关。 电源装置利用放电开关，以规定的模式对输入电压进行整形，进行输入电压控制。

公开(公告)号：US09184653B2

公开(公告)日：2015-11-10

申请号：US13921474

申请日：2013-06-19

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Hyun-Chul Eom ,  In-Ki Park

IPC分类号： H02H9/08 ,  H02M1/32 ,  H02H9/02 ,  H02M3/335 ,  H02H3/08 ,  H02M1/42

CPC分类号： H02M1/32 ,  H02H3/08 ,  H02H9/02 ,  H02H9/025 ,  H02M1/4258 ,  H02M3/33507 ,  H02M3/33515 ,  Y02B70/126

摘要： A short-circuit sense circuit and a power supply according to an exemplary embodiment of the present invention use an auxiliary voltage, which is a both-end voltage of an auxiliary coil coupled with a predetermined turn ratio to a secondary side coil coupled to an output voltage. After termination of a start-up period, the short-circuit sense circuit samples a sense voltage, which is a voltage of a node between a first sense resistor and a second sense resistor coupled in series to both ends of the auxiliary coils and determines whether a short-circuit occurs according to a short-circuit sense signal that depends on a result of comparison between the sampled voltage and a predetermined reference voltage.

摘要翻译： 根据本发明的示例性实施例的短路感测电路和电源使用辅助电压，辅助电压是与预定匝数比耦合的辅助线圈的二端电压与耦合到输出端的次级侧线圈 电压。 在启动周期终止之后，短路检测电路对感测电压进行采样，该感测电压是在辅助线圈的两端串联耦合的第一检测电阻器和第二检测电阻器之间的节点的电压，并确定是否 根据取决于采样电压和预定参考电压之间的比较结果的短路感测信号发生短路。

公开(公告)号：US20150285872A1

公开(公告)日：2015-10-08

申请号：US14678262

申请日：2015-04-03

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Bong-Geun CHUNG ,  Taesung KIM ,  Gwanbon KOO

IPC分类号： G01R31/42 ,  G01R19/165

CPC分类号： H02M1/15 ,  G01R31/04 ,  H02M1/32 ,  H02M3/07 ,  H02M3/33523 ,  H02M3/33576 ,  H02M2001/0035 ,  Y02B70/16

摘要： A load detecting device for detecting whether a load is connected to a power supply device includes a no-load condition detector configured to detect a no-load condition using a sensing voltage having a frequency variant with a switching frequency of the power supply device, a circuit configured to acquire a signal having a waveform differing according to a connection or detachment between the load and the power supply device after the no-load condition is detected by the no-load condition detector, and a detachment detector configured to detect whether the load is detached by sensing the signal acquired by the circuit.

摘要翻译： 用于检测负载是否连接到电源装置的负载检测装置包括：空载状态检测器，被配置为使用具有电源装置的开关频率的频率变化的感测电压来检测空载状态; 电路，被配置为在所述空载状态检测器检测到所述空载状态之后，获取具有与所述负载和所述供电装置之间的连接或分离不同的波形的信号;以及分离检测器，被配置为检测所述负载 通过感测由电路获得的信号来分离。

公开(公告)号：US20150285870A1

公开(公告)日：2015-10-08

申请号：US14678504

申请日：2015-04-03

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Gwanbon KOO ,  Euisoo KIM

IPC分类号： G01R31/40 ,  H02M3/335

CPC分类号： G01R31/40 ,  G01R31/04 ,  H02M3/33507 ,  H02M3/33576 ,  H02M2001/0035 ,  Y02B70/16

摘要： A load detecting method relates to detecting connection or detachment between a power supply device and a load, and the load detecting method includes steps of determining whether a load detection operation is necessary or not, based on a detection voltage corresponding to an output voltage from the power supply device, when determining the load detection operation to be necessary, estimating a specific time point in a first period during which the output voltage of the power supply device decreases from a first level to a second level, and applying a test signal to the output voltage for a predetermined detection period with reference to the specific time point. The switching operation of a power switch of the power supply device does not occur in the first period.

摘要翻译： 负载检测方法涉及检测电源装置和负载之间的连接或拆卸，并且所述负载检测方法包括以下步骤：基于与来自所述电源装置的输出电压相对应的检测电压来确定是否需要负载检测操作 电源装置，当确定需要的负载检测操作时，估计电源装置的输出电压从第一电平降低到第二电平的第一时段中的特定时间点，并将测试信号施加到 参考特定时间点的预定检测周期的输出电压。 电源装置的电源开关的切换操作在第一时间段内不发生。

公开(公告)号：US20150155860A1

公开(公告)日：2015-06-04

申请号：US14557880

申请日：2014-12-02

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： In-Ki PARK ,  Hyun-Chul EUM ,  Chi-Yin LO

IPC分类号： H03K5/08 ,  H03K5/1532 ,  H03K5/1252 ,  H02M3/22

CPC分类号： H03K5/08 ,  H02M1/36 ,  H02M1/4258 ,  H02M2001/0022 ,  H02M2001/0025 ,  H03K5/1252 ,  H03K5/1532 ,  Y02B70/126

摘要： A power supply includes a power switch and a switch control circuit controlling a switching operation of the power switch using a comparison voltage generated according to an output, determining a clamping voltage by sensing an input voltage during a start-up period, and clamping the comparison voltage to the clamping voltage during the start-up period.

摘要翻译： 电源包括电源开关和开关控制电路，其使用根据输出产生的比较电压来控制电源开关的开关操作，通过在启动期间感测输入电压来确定钳位电压，并钳位比较 在启动期间的电压与钳位电压的关系。

公开(公告)号：US20150009722A1

公开(公告)日：2015-01-08

申请号：US14324704

申请日：2014-07-07

申请人： FAIRCHILD KOREA SEMICONDUCTOR LTD.

发明人： Hyun-Chul EUM ,  Young-Jong KIM ,  In-Ki PARK

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/4258 ,  H02M2001/0016 ,  H02M2001/0019 ,  H05B33/0815 ,  Y02B70/126

摘要： Provided is regulation of a line current. The regulation of the line current includes comparing a reference voltage with a line sensing voltage to generate a feedback voltage, and controlling a switching operation of a power switch using the feedback voltage. The reference voltage may be a voltage having a constant level, a voltage which varies according to an output current, or a voltage which follows a sine wave to compensate a power factor. Provided is sensing of an output current. The sensing of the output current includes sensing the output current using a feedback voltage corresponding to a voltage between both terminals of an inductor connected to a power switch, a peak of current flowing through the power switch, and a switching cycle of the power switch.

摘要翻译： 提供线路电流的调节。 线路电流的调节包括将参考电压与线路感测电压进行比较以产生反馈电压，以及使用反馈电压来控制功率开关的开关操作。 参考电压可以是具有恒定电平的电压，根据输出电流而变化的电压或者是跟随正弦波的电压以补偿功率因数。 提供输出电流的感测。 输出电流的感测包括使用对应于连接到电源开关的电感器的两个端子之间的电压的反馈电压，流过电源开关的电流的峰值和电源开关的开关周期来感测输出电流。