公开(公告)号：US08502459B2

公开(公告)日：2013-08-06

申请号：US13095572

申请日：2011-04-27

申请人： Young Suk Son ,  Tae Kyu Nam ,  Won Suk Jang ,  Hyung Seog Oh

发明人： Young Suk Son ,  Tae Kyu Nam ,  Won Suk Jang ,  Hyung Seog Oh

IPC分类号： H05B41/36 ,  H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  Y02B20/347

摘要： A driver IC for electrical loads, suitable for regulating a driving voltage depending upon a feedback signal and supplying a regulated driving voltage to a power supply line to which load strings are connected in parallel. The driver IC includes driving current sources respectively connected to the load strings through regulated voltage nodes and configured to supply driving current to the load strings in response to a control signal; sensing units configured to sense and output a minimum voltage among voltages of the regulated voltage nodes; a sample-and-hold circuit configured to sample, hold and output the minimum voltage in response to the control signal; and a comparator configured to compare an output voltage of the sample-and-hold circuit and a reference threshold voltage and generate the feedback signal.

摘要翻译： 一种用于电气负载的驱动器IC，适用于根据反馈信号调节驱动电压，并将调节的驱动电压提供给负载串并联连接的电源线。 驱动器IC包括分别通过调节电压节点连接到负载串的驱动电流源，并且被配置为响应于控制信号向驱动电流提供驱动电流; 感测单元，被配置为感测并输出调节电压节点的电压中的最小电压; 采样保持电路，被配置为响应于所述控制信号采样，保持和输出所述最小电压; 以及比较器，被配置为将采样保持电路的输出电压与参考阈值电压进行比较，并产生反馈信号。

公开(公告)号：US20110266962A1

公开(公告)日：2011-11-03

申请号：US13095572

申请日：2011-04-27

申请人： Young Suk Son ,  Tae-Kyu Nam ,  Won-Suk Jang ,  Hyung-Seog Oh

发明人： Young Suk Son ,  Tae-Kyu Nam ,  Won-Suk Jang ,  Hyung-Seog Oh

IPC分类号： H05B37/02 ,  H03K3/00

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  Y02B20/347

摘要： A driver IC for electrical loads, suitable for regulating a driving voltage depending upon a feedback signal and supplying a regulated driving voltage to a power supply line to which load strings are connected in parallel. The driver IC includes driving current sources respectively connected to the load strings through regulated voltage nodes and configured to supply driving current to the load strings in response to a control signal; sensing units configured to sense and output a minimum voltage among voltages of the regulated voltage nodes; a sample-and-hold circuit configured to sample, hold and output the minimum voltage in response to the control signal; and a comparator configured to compare an output voltage of the sample-and-hold circuit and a reference threshold voltage and generate the feedback signal.

摘要翻译： 一种用于电气负载的驱动器IC，适用于根据反馈信号调节驱动电压，并将调节的驱动电压提供给负载串并联连接的电源线。 驱动器IC包括分别通过调节电压节点连接到负载串的驱动电流源，并且被配置为响应于控制信号向驱动电流提供驱动电流; 感测单元，被配置为感测并输出调节电压节点的电压中的最小电压; 采样保持电路，被配置为响应于所述控制信号采样，保持和输出所述最小电压; 以及比较器，被配置为将采样保持电路的输出电压与参考阈值电压进行比较，并产生反馈信号。