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    • 8. 发明申请
    • SWITCHING POWER CONVERTER INPUT VOLTAGE APPROXIMATE ZERO CROSSING DETERMINATION
    • 切换电源转换器输入电压近似零交叉测量
    • WO2012061784A3
    • 2012-07-05
    • PCT/US2011059462
    • 2011-11-04
    • CIRRUS LOGIC INCKING ERIC JMELANSON JOHN L
    • KING ERIC JMELANSON JOHN L
    • H02M1/08
    • H03K17/13H05B33/0815H05B33/0845Y02B20/346
    • In at least one embodiment, the controller senses a leading edge, phase cut AC input voltage value to a switching power converter during a cycle of the AC input voltage. The controller senses the voltage value at a time prior to a zero crossing of the AC input voltage and utilizes the voltage value to determine the approximate zero crossing. In at least one embodiment, by determining an approximate zero crossing of the AC input voltage, the controller is unaffected by any disturbances of the dimmer that could otherwise make detecting the zero crossing problematic. The particular way of determining an approximate zero crossing is a matter of design choice. In at least one embodiment, the controller approximates the AC input voltage using a function that estimates a waveform of the AC input voltage and determines the approximate zero crossing of the AC input voltage from the approximation of the AC input voltage.
    • 在至少一个实施例中,控制器在交流输入电压的周期期间感测到开关功率转换器的前沿,相切割AC输入电压值。 控制器感测交流输入电压过零之前的电压值,并利用电压值来确定近似过零点。 在至少一个实施例中,通过确定AC输入电压的近似零交叉,控制器不受调光器的任何干扰影响,否则可能会使检测到零交叉问题。 确定近似过零点的具体方法是设计选择的问题。 在至少一个实施例中,控制器使用估计AC输入电压的波形的函数来近似AC输入电压,并根据AC输入电压的近似确定AC输入电压的近似过零点。
    • 9. 发明申请
    • SWITCHING POWER CONVERTER INPUT VOLTAGE APPROXIMATE ZERO CROSSING DETERMINATION
    • 开关电源变换器输入电压近似零交叉确定
    • WO2012061784A2
    • 2012-05-10
    • PCT/US2011/059462
    • 2011-11-04
    • CIRRUS LOGIC, INC.KING, Eric J.MELANSON, John L.
    • KING, Eric J.MELANSON, John L.
    • H05B37/02
    • H03K17/13H05B33/0815H05B33/0845Y02B20/346
    • In at least one embodiment, the controller senses a leading edge, phase cut AC input voltage value to a switching power converter during a cycle of the AC input voltage. The controller senses the voltage value at a time prior to a zero crossing of the AC input voltage and utilizes the voltage value to determine the approximate zero crossing. In at least one embodiment, by determining an approximate zero crossing of the AC input voltage, the controller is unaffected by any disturbances of the dimmer that could otherwise make detecting the zero crossing problematic. The particular way of determining an approximate zero crossing is a matter of design choice. In at least one embodiment, the controller approximates the AC input voltage using a function that estimates a waveform of the AC input voltage and determines the approximate zero crossing of the AC input voltage from the approximation of the AC input voltage.
    • 在至少一个实施例中,控制器在AC输入电压的周期期间感测前沿,相切AC输入电压值给开关功率变换器。 控制器在交流输入电压过零点之前的时间检测电压值,并利用该电压值确定近似过零点。 在至少一个实施例中,通过确定AC输入电压的近似过零点,控制器不受调光器的任何干扰的影响,否则可能使得检测过零点成为问题。 确定近似过零点的具体方式是设计选择的问题。 在至少一个实施例中,控制器使用估计AC输入电压的波形的函数来近似AC输入电压,并根据AC输入电压的近似来确定AC输入电压的近似过零点。
    • 10. 发明申请
    • COORDINATED DIMMER COMPATIBILITY FUNCTIONS
    • 协调调光器兼容性功能
    • WO2012016221A3
    • 2012-03-29
    • PCT/US2011046027
    • 2011-07-29
    • CIRRUS LOGIC INCMELANSON JOHN LKING ERIC J
    • MELANSON JOHN LKING ERIC J
    • H02M1/36H02M1/00H05B33/08
    • H02M3/33507H02M1/36H02M7/06H02M2001/0006H05B33/0815Y02B20/346Y10T307/352Y10T307/50
    • A system and method includes a controller that is configured to coordinate (i) a low impedance path for a dimmer current, (ii), control of switch mode power conversion and (iii) an inactive state to, for example, to allow a dimmer to function normally from cycle to cycle of an alternating current (AC) supply voltage. In at least one embodiment, the dimmer functions normally when the dimmer conducts at a correct phase angle indicated by a dimmer input setting and avoids prematurely resetting while conducting. In at least one embodiment, by coordinating functions (i), (ii), and (iii), the controller controls a power converter system that is compatible with a triac-based dimmer. In at least one embodiment, the controller coordinates functions (i), (ii), and (iii) in response to a particular dimming level indicated by a phase cut, rectified input voltage supplied to the power converter system.
    • 一种系统和方法包括控制器,其被配置为协调(i)用于调光器电流的低阻抗路径,(ii)开关模式功率转换的控制和(iii)非活动状态,以例如允许调光器 在交流(AC)电源电压的周期到周期之间正常工作。 在至少一个实施例中,当调光器以由调光器输入设置指示的正确相位角传导时,调光器正常工作,并避免在导通时过早复位。 在至少一个实施例中,通过协调功能(i),(ii)和(iii),控制器控制与基于三端双向可控硅的调光器兼容的功率转换器系统。 在至少一个实施例中,控制器响应由提供给功率转换器系统的相位切断的整流输入电压指示的特定调光电平来对功能(i),(ii)和(iii)进行协调。