-
1.发明申请SYSTEM AND METHOD FOR PROVIDING A PULSE-WIDTH MODULATED SIGNAL TO AN OUTPUT SYSTEM 有权将脉冲宽度调制信号提供给输出系统的系统和方法公开(公告)号：US20100013569A1
公开(公告)日：2010-01-21
申请号：US12173488
申请日：2008-07-15
IPC分类号： H03K7/08
CPC分类号： H03K5/1565 , H03K7/08
摘要： Systems and methods are disclosed that can be used to control an output signal, such as for controlling a heater for a hard disk drive. A system can include a pre-driver configured to provide a pulse-width modulated (PWM) signal to an output system in response to a control signal and a feedback signal, the output system being configured to provide an output signal for driving a load, the pre-driver comprising a modulator that provides the PWM signal in response to the control signal and a filtered feedback signal. A low pass filter is configured to receive a feedback signal with a voltage corresponding to a voltage of the output signal, wherein the low pass filter provides the filtered feedback signal that controls a frequency of the PWM signal to the modulator, the low pass filter having a bulk driven operational transconductance amplifier.
摘要翻译： 公开了可用于控制输出信号的系统和方法，例如用于控制用于硬盘驱动器的加热器。 系统可以包括预驱动器，其配置为响应于控制信号和反馈信号向输出系统提供脉宽调制（PWM）信号，输出系统被配置为提供用于驱动负载的输出信号， 预驱动器包括响应于控制信号和经滤波的反馈信号提供PWM信号的调制器。 低通滤波器被配置为接收具有与输出信号的电压对应的电压的反馈信号，其中低通滤波器提供将经过滤波的反馈信号控制到调制器的PWM信号的频率，低通滤波器具有 大容量驱动的运算跨导放大器。
-
2.发明授权System and method for providing a pulse-width modulated signal to an output system 有权用于向输出系统提供脉宽调制信号的系统和方法公开(公告)号：US07692889B2
公开(公告)日：2010-04-06
申请号：US12173488
申请日：2008-07-15
CPC分类号： H03K5/1565 , H03K7/08
摘要： Systems and methods are disclosed that can be used to control an output signal, such as for controlling a heater for a hard disk drive. A system can include a pre-driver configured to provide a pulse-width modulated (PWM) signal to an output system in response to a control signal and a feedback signal, the output system being configured to provide an output signal for driving a load, the pre-driver comprising a modulator that provides the PWM signal in response to the control signal and a filtered feedback signal. A low pass filter is configured to receive a feedback signal with a voltage corresponding to a voltage of the output signal, wherein the low pass filter provides the filtered feedback signal that controls a frequency of the PWM signal to the modulator, the low pass filter having a bulk driven operational transconductance amplifier.
摘要翻译： 公开了可用于控制输出信号的系统和方法，例如用于控制用于硬盘驱动器的加热器。 系统可以包括预驱动器，其配置为响应于控制信号和反馈信号向输出系统提供脉宽调制（PWM）信号，输出系统被配置为提供用于驱动负载的输出信号， 预驱动器包括响应于控制信号和经滤波的反馈信号提供PWM信号的调制器。 低通滤波器被配置为接收具有与输出信号的电压对应的电压的反馈信号，其中低通滤波器提供将经过滤波的反馈信号控制到调制器的PWM信号的频率，低通滤波器具有 大容量驱动的运算跨导放大器。
-
公开(公告)号：US08218259B2
公开(公告)日：2012-07-10
申请号：US12729183
申请日：2010-03-22
CPC分类号： H03F3/45282 , H03F3/45085 , H03F2203/45636
摘要： A reduced power driver is described. This reduced power driver comprises: an input current driver for transmitting a current signal that is a fraction of a DC current signal; a first resistor coupled at one end to a first voltage supply; a first current driver coupled to the input current driver and a first switch control; a second switch coupled a first current driver output, another end of the first resistor, and the output control; a dynamic booster coupled between the first voltage supply and the output control; and wherein the reduced power driver is operative for selectively adding an overshoot current to the output control so that power consumption is reduced, while synchronizing the DC current signal with the overshoot current.
摘要翻译： 描述了一种降低功率的驱动器。 该减小功率驱动器包括：用于发送作为DC电流信号的一部分的电流信号的输入电流驱动器; 第一电阻器，其一端耦合到第一电压源; 耦合到所述输入电流驱动器的第一电流驱动器和第一开关控制; 耦合第一电流驱动器输出的第二开关，第一电阻的另一端和输出控制; 耦合在第一电压源和输出控制之间的动态升压器; 并且其中所述降低功率驱动器用于选择性地向所述输出控制器添加过冲电流，使得在使所述直流电流信号与所述过冲电流同步的同时降低功耗。
-
公开(公告)号：US20100237910A1
公开(公告)日：2010-09-23
申请号：US12729183
申请日：2010-03-22
IPC分类号： H03B1/00
CPC分类号： H03F3/45282 , H03F3/45085 , H03F2203/45636
摘要： A reduced power driver is described. This reduced power driver comprises: an input current driver for transmitting a current signal that is a fraction of a DC current signal; a first resistor coupled at one end to a first voltage supply; a first current driver coupled to the input current driver and a first switch control; a second switch coupled a first current driver output, another end of the first resistor, and the output control; a dynamic booster coupled between the first voltage supply and the output control; and wherein the reduced power driver is operative for selectively adding an overshoot current to the output control so that power consumption is reduced, while synchronizing the DC current signal with the overshoot current.
摘要翻译： 描述了一种降低功率的驱动器。 该减小功率驱动器包括：用于发送作为DC电流信号的一部分的电流信号的输入电流驱动器; 第一电阻器，其一端耦合到第一电压源; 耦合到所述输入电流驱动器的第一电流驱动器和第一开关控制; 耦合第一电流驱动器输出的第二开关，第一电阻的另一端和输出控制; 耦合在第一电压源和输出控制之间的动态升压器; 并且其中所述降低功率驱动器用于选择性地向所述输出控制器添加过冲电流，使得在使所述直流电流信号与所述过冲电流同步的同时降低功耗。
-
公开(公告)号：US08174320B1
公开(公告)日：2012-05-08
申请号：US13023313
申请日：2011-02-08
IPC分类号： H03F3/04
CPC分类号： H03K17/305
摘要： A current switching system is described. This system includes first and second mirrored devices coupled to each other and a coupled terminal, and the first and second mirrored devices are coupled to an input terminal and an output terminal; a storage element in element in parallel with the first mirrored device and the first degeneration device; a variable impedance device coupled between the coupled terminal and a low voltage device; and a current mirroring accuracy enhancing circuit coupled between the coupled terminal and a high voltage device, wherein the variable impedance device dynamically changes a current at the coupled terminal to a second level depending when a threshold is met, and an impedance on the coupled terminal remains low both before switching and during switching.
摘要翻译： 描述当前的交换系统。 该系统包括彼此耦合的第一和第二镜像设备和耦合终端，并且第一和第二镜像设备耦合到输入端子和输出端子; 与所述第一镜像装置和所述第一退化装置并联的元件中的存储元件; 耦合在所述耦合端子和低电压装置之间的可变阻抗装置; 以及耦合在所述耦合端子和高电压装置之间的电流镜像精度增强电路，其中所述可变阻抗装置根据满足阈值时将所述耦合端子处的电流动态地改变为第二电平，并且所述耦合端子上的阻抗保持 在切换和切换之前均为低电平。
-
-
-
-
搜索结果
5 条记录 (耗时 0.012 秒)
