-
公开(公告)号：US08729870B2
公开(公告)日：2014-05-20
申请号：US13531584
申请日：2012-06-25
IPC分类号： G05F1/70
CPC分类号： H05B33/0815
摘要： A current-driven load such as LEDs or laser diodes is driven by a current driver having a two stages (or phases), the outputs of which have ripple which is forced to be out-of-phase with one another. In analog embodiments, an output (ripple or switching) of a master stage hysteresis controller is phase-shifted and scaled, and modulates the input of a slave stage hysteresis controller so that the slave stage pulls into a ripple-canceling phase. In digital embodiments, a faster of the two phases is designated “master”, maximum and minimum thresholds are set, and the slave phase's on time is based on a previous cycle's slave phase ON time, the master stage OFF time and an offset. The slave controller may “lock” to the anti-phase of the master stage (or phase). The ripple currents at the summed output of the master and slave stages substantially cancel.
摘要翻译： 诸如LED或激光二极管的电流驱动负载由具有两级（或相）的电流驱动器驱动，其输出具有被迫彼此异相的纹波。 在模拟实施例中，主级滞后控制器的输出（纹波或切换）被相移和缩放，并且调制从属级滞后控制器的输入，使得从级将拉入纹波消除阶段。 在数字实施例中，两相中较快的速度被指定为“主”，设定最大和最小阈值，并且从动相的导通时间基于先前的周期的从相接通时间，主阶段关断时间和偏移量。 从控制器可以“锁定”到主级（或相）的反相。 主级和从级相加输出的纹波电流基本上消除。
-
公开(公告)号：US20120268026A1
公开(公告)日：2012-10-25
申请号：US13531584
申请日：2012-06-25
CPC分类号： H05B33/0815
摘要： A current-driven load such as LEDs or laser diodes is driven by a current driver having a two stages (or phases), the outputs of which have ripple which is forced to be out-of-phase with one another. In analog embodiments, an output (ripple or switching) of a master stage hysteresis controller is phase-shifted and scaled, and modulates the input of a slave stage hysteresis controller so that the slave stage pulls into a ripple-canceling phase. In digital embodiments, a faster of the two phases is designated “master”, maximum and minimum thresholds are set, and the slave phase's on time is based on a previous cycle's slave phase ON time, the master stage OFF time and an offset. The slave controller may “lock” to the anti-phase of the master stage (or phase). The ripple currents at the summed output of the master and slave stages substantially cancel.
摘要翻译： 诸如LED或激光二极管的电流驱动负载由具有两级（或相）的电流驱动器驱动，其输出具有被迫彼此异相的纹波。 在模拟实施例中，主级滞后控制器的输出（纹波或切换）被相移和缩放，并且调制从属级滞后控制器的输入，使得从级将拉入纹波消除阶段。 在数字实施例中，两相中较快的速度被指定为主，最大和最小阈值被设置，并且从动相的导通时间基于先前的周期的从相接通时间，主阶段关断时间和偏移量。 从控制器可能锁定到主级（或相）的反相。 主级和从级相加输出的纹波电流基本上消除。
-
公开(公告)号：US20100207543A1
公开(公告)日：2010-08-19
申请号：US12541915
申请日：2009-08-15
IPC分类号： H05B37/02
CPC分类号： H05B33/0815
摘要： A current-driven load such as LEDs or laser diodes is driven by a current driver having a two stages (or phases), the summed outputs of which have ripple which is forced to be out-of-phase with one another. In analog embodiments, an output (ripple or switching) of a master stage hysteresis controller is phase-shifted and scaled, and modulates the input of a slave stage hysteresis controller so that the slave stage pulls into a ripple-canceling phase. In a digital embodiment, a faster of the two phases is designated “master”, maximum and minimum thresholds are set, and the slave phase's on time is based on a previous cycle's slave phase ON time, the master stage OFF time and an offset. The slave controller preferentially “locks” to the anti-phase of the master stage (or phase) and the ripple current at the summed output substantially cancels.
摘要翻译： 诸如LED或激光二极管的电流驱动负载由具有两级（或相位）的电流驱动器驱动，其相加的输出具有被迫彼此异相的纹波。 在模拟实施例中，主级滞后控制器的输出（纹波或切换）被相移和缩放，并且调制从属级滞后控制器的输入，使得从级将拉入纹波消除阶段。 在数字实施例中，两相中较快的速度被指定为“主”，设定最大和最小阈值，并且从动相的导通时间基于先前的周期的从相接通时间，主阶段关断时间和偏移量。 从控制器优先“锁定”到主级（或相位）的反相位，并且相加输出处的纹波电流基本上消除。
-
公开(公告)号：US08207711B2
公开(公告)日：2012-06-26
申请号：US12541915
申请日：2009-08-15
IPC分类号： G05F1/70
CPC分类号： H05B33/0815
摘要： A current-driven load such as LEDs or laser diodes is driven by a current driver having a two stages (or phases), the summed outputs of which have ripple which is forced to be out-of-phase with one another. In analog embodiments, an output (ripple or switching) of a master stage hysteresis controller is phase-shifted and scaled, and modulates the input of a slave stage hysteresis controller so that the slave stage pulls into a ripple-canceling phase. In a digital embodiment, a faster of the two phases is designated “master”, maximum and minimum thresholds are set, and the slave phase's on time is based on a previous cycle's slave phase ON time, the master stage OFF time and an offset. The slave controller preferentially “locks” to the anti-phase of the master stage (or phase) and the ripple current at the summed output substantially cancels.
摘要翻译： 诸如LED或激光二极管的电流驱动负载由具有两级（或相）的电流驱动器驱动，其相加的输出具有被迫彼此异相的纹波。 在模拟实施例中，主级滞后控制器的输出（纹波或切换）被相移和缩放，并且调制从属级滞后控制器的输入，使得从级将拉入纹波消除阶段。 在数字实施例中，两相中较快的速度被指定为“主”，设定最大和最小阈值，并且从动相的导通时间基于先前的周期的从相接通时间，主阶段关断时间和偏移量。 从控制器优先“锁定”到主级（或相位）的反相位，并且相加输出处的纹波电流基本上消除。
-
-
-
搜索结果
4 条记录 (耗时 0.023 秒)
