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1. 发明申请

WO2014164755A3 QUANTIZATION ERROR REDUCTION IN CONSTANT OUTPUT CURRENT CONTROL DRIVERS 审中-公开
标题翻译：恒定输出电流控制驱动器中的量化误差减少
公开(公告)号：WO2014164755A3
公开(公告)日：2015-04-02
申请号：PCT/US2014023399
申请日：2014-03-11
申请人： CIRRUS LOGIC INC
发明人： MARU SIDDHARTH , HE ZHAOHUI
IPC分类号： H02M1/42 , H02M3/156 , H02M3/335 , H05B33/08
CPC分类号： H02M3/33507 , H02M1/4258 , H02M3/156 , H05B33/0815 , H05B33/0848 , Y02B20/347 , Y02B70/126
摘要： An electronic system and method includes a controller to control a switching power converter in at least two different modes of operation, a normal mode and an error reduction mode. The controller controls an amount of charge pushed (i.e. delivered) by the switching power converter to a load to reduce a charge quantization error. The charge quantization error represents an amount of charge pushed to the load beyond a target charge amount. The controller determines an amount of charge to be pushed to the load. Based on the amount of charge to be pushed to the load, the controller generates a current control signal that controls a current control switch in the switching power converter. Determination of the control signal depends on whether the controller is operating in normal mode or error reduction mode. The controller attempts to reduce the charge quantization error to avoid power fluctuations.
摘要翻译：一种电子系统和方法包括：控制器，其以至少两种不同的操作模式，正常模式和误差降低模式来控制开关功率转换器。控制器控制由开关功率转换器推送（即传送）到负载的电荷量，以减少电荷量化误差。电荷量化误差表示被推到负载超过目标电荷量的电荷量。控制器确定要向负载推送的电量。基于将被推送到负载的电荷量，控制器产生控制开关电力转换器中的电流控制开关的电流控制信号。控制信号的确定取决于控制器是在正常模式还是误差降低模式下运行。控制器尝试降低电荷量化误差以避免功率波动。

2. 发明申请

WO2014018676A2 ACTIVE THERMAL PROTECTION FOR SWITCHES 审中-公开
标题翻译：开关的主动保护
公开(公告)号：WO2014018676A2
公开(公告)日：2014-01-30
申请号：PCT/US2013051892
申请日：2013-07-24
申请人： CIRRUS LOGIC INC
发明人： SOOD MOHIT , ISAACSON SPENCER , SINGH RAHUL , HE ZHAOHUI
CPC分类号： H02M3/33523 , H02M3/335 , H03K17/145 , H05B33/0815 , H05B33/0848 , H05B33/0884 , Y02B20/341 , Y10T307/406 , Y10T307/832
摘要： A system and method include a controller that reduces power dissipated by a switch, such as a source-controlled field effect transistor, when an estimated amount of power dissipated by the switch exceeds a predetermined threshold. Reducing the power dissipated by the switch prevents damage to the switch due to overheating. The controller determines the estimated amount of power dissipated by the switch using actual drain-to-source current and drain voltage data. In at least one embodiment, the controller includes a fail-safe, estimated power dissipation determination path that activates when the drain voltage data fails a reliability test. Additionally, in at least one embodiment, the controller includes a model of thermal characteristics of the switch. In at least one embodiment, the controller utilizes real-time estimated power dissipation by the switch and the model to determine when the estimated power dissipated by the switch exceeds a power dissipation protection threshold.
摘要翻译：一种系统和方法包括当由开关消耗的估计的功率量超过预定阈值时，降低由诸如源极控制场效应晶体管的开关消耗的功率的控制器。降低开关消耗的功率可防止由于过热而损坏开关。控制器使用实际的漏极 - 源极电流和漏极电压数据来确定开关耗散的功率的估计量。在至少一个实施例中，控制器包括故障安全的估计功率耗散确定路径，当漏极电压数据失败可靠性测试时激活。另外，在至少一个实施例中，控制器包括开关的热特性模型。在至少一个实施例中，控制器利用开关和模型的实时估计的功率消耗来确定由开关消耗的估计功率何时超过功率耗散保护阈值。

3. 发明申请

WO2013090852A3 ADAPTIVE CURRENT CONTROL TIMING AND RESPONSIVE CURRENT CONTROL FOR INTERFACING WITH A DIMMER 审中-公开
标题翻译：自适应电流控制时序和响应电流控制用于与DIMM连接
公开(公告)号：WO2013090852A3
公开(公告)日：2014-08-21
申请号：PCT/US2012069949
申请日：2012-12-14
申请人： CIRRUS LOGIC INC , HE ZHAOHUI
发明人： HE ZHAOHUI
IPC分类号： H02M5/257 , H02M1/00 , H02M1/44
CPC分类号： H02M3/33507 , H02M1/4258 , H02M1/44 , H02M3/33523 , H02M3/33561 , H02M3/33576 , H02M5/2576 , H02M7/217 , H02M2001/0006 , H02M2001/0048 , H05B33/0815 , H05B33/0845 , H05B37/02 , Y02B20/346 , Y02B20/347 , Y02B70/126 , Y02B70/1491
摘要： In at least one embodiment, an electronic system adapts current control timing for half line cycle of a phase-cut input voltage and responsively controls a dimmer current in a power converter system. The adaptive current control time and responsive current control provides, for example, interfacing with a dimmer. The electronic system and method include a dimmer, a switching power converter, and a controller to control the switching power converter and controls a dimmer current. In at least one embodiment, the controller determines a predicted time period from a zero crossing until a leading edge of a phase-cut input voltage and then responsively controls the dimmer current to, for example, reduce current and voltage perturbations (referred to as "ringing"), improve efficiency, and reduce an average amount of power handled by various circuit components.
摘要翻译：在至少一个实施例中，电子系统适应相切切输入电压的半线周期的电流控制定时，并且响应于控制功率转换器系统中的调光器电流。自适应电流控制时间和响应电流控制提供例如与调光器的接口。电子系统和方法包括调光器，开关电源转换器和控制器以控制开关功率转换器并控制调光器电流。在至少一个实施例中，控制器确定从零交叉直到相切输入电压的前沿的预测时间段，然后响应地控制调光器电流，例如减小电流和电压扰动（称为“ 振铃“），提高效率，并减少各种电路组件处理的平均功率。

4. 发明申请

WO2013090845A3 MULTI-MODE FLYBACK CONTROL FOR A SWITCHING POWER CONVERTER WITH DIMMER 审中-公开
标题翻译：用于具有调光器的开关电源转换器的多模式跳线控制
公开(公告)号：WO2013090845A3
公开(公告)日：2014-09-18
申请号：PCT/US2012069942
申请日：2012-12-14
申请人： CIRRUS LOGIC INC
发明人： MARU SIDDHARTH , HE ZHAOHUI , SOOD MOHIT
IPC分类号： H02M5/257 , H02M1/00 , H02M1/44
CPC分类号： H02M3/33507 , H02M1/4258 , H02M1/44 , H02M3/33523 , H02M3/33561 , H02M3/33576 , H02M5/2576 , H02M7/217 , H02M2001/0006 , H02M2001/0048 , H05B33/0815 , H05B33/0845 , H05B37/02 , Y02B20/346 , Y02B20/347 , Y02B70/126 , Y02B70/1491
摘要： In at least one embodiment, an electronic system and method includes a controller to control a switching power converter in at least two different modes of operation depending on whether the controller detects a dimmer or not and/or whether a load requests more power than either of the two operational modes can provide. In at least one embodiment, the controller detects whether a dimmer is phase cutting an input voltage to a switching power converter. The controller operates the switching power converter in a first mode if the dimmer is detected, and the controller operates the switching power converter in a second mode if the dimmer is not detected. The controller also transitions between operating the switching power converter in the first mode and the second mode if a status of detection of the dimmer changes.
摘要翻译：在至少一个实施例中，电子系统和方法包括控制器，用于根据控制器是否检测到调光器和/或负载是否要求比任何一个调光器更多的功率来控制至少两种不同的操作模式的开关功率转换器两种操作模式可以提供。在至少一个实施例中，控制器检测调光器是否相位切割到开关功率转换器的输入电压。如果检测到调光器，则控制器以第一模式操作开关功率转换器，并且如果未检测到调光器，则控制器在第二模式下操作开关功率转换器。如果调光器的检测状态改变，则控制器还在第一模式中操作开关功率转换器和第二模式之间转换。

5. 发明申请

WO2012083222A2 SWITCHING PARAMETER BASED DISCONTINUOUS MODE-CRITICAL CONDUCTION MODE TRANSITION 审中-公开
标题翻译：基于开关参数的不连续模式临界导通模式转换
公开(公告)号：WO2012083222A2
公开(公告)日：2012-06-21
申请号：PCT/US2011065593
申请日：2011-12-16
申请人： CIRRUS LOGIC INC , MELANSON JOHN L , HE ZHAOHUI
发明人： MELANSON JOHN L , HE ZHAOHUI
IPC分类号： H02M1/00
CPC分类号： H02M3/33507 , H02M3/33523 , H02M2001/0003 , H02M2001/007 , H05B33/0815 , Y02B20/346
摘要： An electronic system includes a controller to provide at least dual-mode conduction control of a switching power converter. In at least one embodiment, the controller is capable to control transitions between discontinuous conduction mode (DCM) and critical conduction mode (CRM) of the switching power converter using a measured switching time parameter having a value corresponding with an approximately peak voltage of a time-varying supply voltage supplied to the switching power converter. In at least one embodiment, the controller dynamically compensates for changing parameters of the electronic system by dynamically determining a minimum non-conductive time of the control switch of the switching power converter using the measured switching time parameter value at approximately the peak of the supply voltage of the supply voltage.
摘要翻译：电子系统包括控制器，以提供开关功率转换器的至少双模式导通控制。在至少一个实施例中，控制器能够使用具有与时间的近似峰值电压相对应的值的测量开关时间参数来控制开关功率转换器的不连续导通模式（DCM）和临界导通模式（CRM）之间的转变提供给开关电源转换器的不同电源电压。在至少一个实施例中，控制器通过动态确定开关功率变换器的控制开关的最小非导通时间，使用测量的开关时间参数值在动态电压的峰值附近动态补偿电子系统的变化参数的电源电压。

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