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1. 发明申请

US20120229107A1 SYSTEM AND METHOD FOR CURRENT SENSING WITHIN A VOLTAGE REGULATOR 审中-公开
标题翻译：电压调节器中电流感测的系统和方法
公开(公告)号：US20120229107A1
公开(公告)日：2012-09-13
申请号：US13275761
申请日：2011-10-18
申请人： SICHENG CHEN , CONGZHONG HUANG , SHEA PETRICEK
发明人： SICHENG CHEN , CONGZHONG HUANG , SHEA PETRICEK
IPC分类号： G05F1/10
CPC分类号： H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A current sense amplifier includes a high-side current sense amplifier and a low-side current sense amplifier. The high-side current sense amplifier provides a current sense voltage signal for use with a voltage regulator and generates the current sense voltage signal responsive to a first current sensed through a high-side switching transistor in a first mode when the high-side switching transistor is turned on and the low-side switching transistor is turned off. The high-side current sense amplifier generates the current sense voltage signal responsive to a second current through the low-side switching transistor in a second mode when the low-side switching transistor is turned on and the high-side switching transistor is turned off. The low-side current sense amplifier senses the second current through the low-side switching transistor and generates a current control signal to the high-side current sense amplifier in the second mode.
摘要翻译：电流检测放大器包括高边电流检测放大器和低端电流检测放大器。高侧电流检测放大器提供与电压调节器一起使用的电流检测电压信号，并且当高侧开关晶体管导通，低端开关晶体管截止。当低侧开关晶体管导通并且高侧开关晶体管截止时，高侧电流检测放大器响应于通过低侧开关晶体管的第二电流以第二模式产生电流感测电压信号。低侧电流检测放大器感测通过低侧开关晶体管的第二电流，并在第二模式中产生到高边电流检测放大器的电流控制信号。

2. 发明申请

US20120105038A1 CLOCK PHASE SHIFTER FOR USE WITH BUCK-BOOST CONVERTER 有权
标题翻译：时钟相位切换器与BUCK-BOOST转换器一起使用
公开(公告)号：US20120105038A1
公开(公告)日：2012-05-03
申请号：US13047424
申请日：2011-03-14
申请人： SICHENG CHEN , CONGZHONG HUANG , XUELIN WU
发明人： SICHENG CHEN , CONGZHONG HUANG , XUELIN WU
IPC分类号： G05F1/618
CPC分类号： H02M3/156 , H02M3/1582
摘要： A buck boost converter generates a regulated output voltage responsive to an input voltage and switching control signals. Switching control circuitry generates the switching control signals responsive to the regulated output voltage, a maximum duty cycle signal and a mode signal. Mode control circuitry generates the maximum duty cycle signal and the mode signal responsive to a buck PWM signal and a boost PWM signal, a first clock signal and a second clock signal phase shifted from the first clock signal by a fixed, programmable amount. A phase shifter generates the first clock signal and the second clock signal responsive to a reference voltage and a synchronization signal.
摘要翻译：降压升压转换器响应于输入电压和开关控制信号产生调节的输出电压。开关控制电路响应于调节的输出电压，最大占空比信号和模式信号产生开关控制信号。模式控制电路产生响应于降压PWM信号和升压PWM信号的最大占空比信号和模式信号，第一时钟信号和从第一时钟信号移位固定的可编程量的第二时钟信号相位。移相器响应于参考电压和同步信号产生第一时钟信号和第二时钟信号。

3. 发明授权

US06603366B2 Trimmable oscillator 有权
标题翻译：可调振荡器
公开(公告)号：US06603366B2
公开(公告)日：2003-08-05
申请号：US09928041
申请日：2001-08-10
申请人： Congzhong Huang , Fredrick W. Trafton , Marcus M. Martins
发明人： Congzhong Huang , Fredrick W. Trafton , Marcus M. Martins
IPC分类号： H03K30231
CPC分类号： H03K3/0231
摘要： The present invention relates to a trimmable oscillator circuit which comprises a comparator circuit operable to compare an output voltage of the oscillator circuit to a reference voltage and output a control signal in response thereto. The oscillator circuit further comprises an output capacitor, wherein a voltage at a node of the capacitor comprises the output voltage of the oscillator circuit, and the oscillator circuit also comprises a selectively trimmable charge/discharge circuit coupled between the comparator circuit and the output capacitor. The charge/discharge circuit is operable to charge or discharge the output capacitor based on the control signal, wherein a rate of charge or discharge is dictated by one or more user selectable control signals. Thus an oscillation frequency of the oscillator circuit may be trimmed.
摘要翻译：本发明涉及一种可调节振荡器电路，其包括比较器电路，其可操作以将振荡器电路的输出电压与参考电压进行比较，并响应于此输出控制信号。所述振荡器电路还包括输出电容器，其中所述电容器的节点处的电压包括所述振荡器电路的输出电压，并且所述振荡器电路还包括耦合在所述比较器电路和所述输出电容器之间的选择性可调节的充电/放电电路。充电/放电电路可操作以基于控制信号对输出电容器进行充电或放电，其中充电或放电的速率由一个或多个用户可选择的控制信号决定。因此，可以修整振荡器电路的振荡频率。

4. 发明授权

US06510394B2 Charge pump with switched capacitor feedback 有权
标题翻译：带开关电容反馈的电荷泵
公开(公告)号：US06510394B2
公开(公告)日：2003-01-21
申请号：US09776312
申请日：2001-02-02
申请人： Congzhong Huang , Fredrick W. Trafton , Kirk D. Peterson
发明人： Congzhong Huang , Fredrick W. Trafton , Kirk D. Peterson
IPC分类号： G01R2700
CPC分类号： H02M3/07
摘要： A system and method is provided for monitoring a voltage level of a charge pump device. The system and method employ a first charging device that is coupled to an output of a charge pump through a switching system. The first charging device is then decoupled from the output of the charge pump device and coupled to a second charging device. The charge on the first charging device is then redistributed between the first charging device and the second charging device. The output of the second charging device is a reduced voltage (e.g., below 5 volts) based on the ratio of the charge distribution between the first and second charging devices. The output of the second charging device can then be compared to a reference voltage to determine if the voltage of the charge pump device is at an adequate voltage level.
摘要翻译：提供了一种用于监测电荷泵装置的电压电平的系统和方法。该系统和方法采用通过交换系统耦合到电荷泵的输出的第一充电装置。然后，第一充电装置与电荷泵装置的输出端分离并耦合到第二充电装置。然后，第一充电装置的充电在第一充电装置和第二充电装置之间重新分配。基于第一和第二充电装置之间的电荷分布的比例，第二充电装置的输出是降低的电压（例如，低于5伏特）。然后可以将第二充电装置的输出与参考电压进行比较，以确定电荷泵装置的电压是否处于足够的电压水平。

5. 发明授权

US08305055B2 Non-inverting buck boost voltage converter 有权
标题翻译：同相降压升压电压转换器
公开(公告)号：US08305055B2
公开(公告)日：2012-11-06
申请号：US12848579
申请日：2010-08-02
申请人： Xuelin Wu , Congzhong Huang , Michael M. Walters
发明人： Xuelin Wu , Congzhong Huang , Michael M. Walters
IPC分类号： G05F1/575 , G05F1/618
CPC分类号： G05F1/10 , H02M3/1582
摘要： A non-inverting buck boost voltage converter includes a buck boost voltage regulation circuitry for generating a regulated output voltage responsive to an input voltage. A current sensor monitors an input current to the buck boost voltage regulation circuitry. Buck boost mode control circuitry controls the buck boost voltage regulation circuitry using peak current mode control in a buck mode of operation and valley current mode control in boost mode of operation responsive to the monitored input current.
摘要翻译：非反相降压升压电压转换器包括降压升压电压调节电路，用于响应于输入电压产生调节的输出电压。电流传感器监测降压升压电压调节电路的输入电流。降压升压模式控制电路使用降压模式下的峰值电流模式控制降压升压电压调节电路，并根据监控的输入电流在升压模式下进行谷值电流模式控制。

6. 发明申请

US20110241636A1 MULTI-PHASE NON-INVERTING BUCK BOOST VOLTAGE CONVERTER 有权
标题翻译：多相非反相升压升压转换器
公开(公告)号：US20110241636A1
公开(公告)日：2011-10-06
申请号：US13160162
申请日：2011-06-14
申请人： XUELIN WU , CONGZHONG HUANG , SHEA PETRICEK
发明人： XUELIN WU , CONGZHONG HUANG , SHEA PETRICEK
IPC分类号： G05F1/618
CPC分类号： H02M3/1584 , H02M3/1582 , H02M3/1588 , Y02B70/1466
摘要： A multi-phase non-inverting buck boost voltage converter has a plurality of buck boost voltage regulators. Each regulator is associated with a separate phase for generating a regulated output voltage responsive to an input voltage. A plurality of current sensors are each associated with one of the plurality of buck boost voltage regulators for monitoring an input current to the associated buck boost voltage regulator and generating a current sense signal for the associated phase. A plurality of buck boost mode control circuitries are each associated with one of the buck boost regulator for controlling an associated buck boost voltage regulator using peak current mode control in a buck mode of operation and valley current mode control in boost mode of operation responsive to a common error voltage and the associated current sense signal. The plurality of buck boost mode control circuitries provides current balancing between the phases. A voltage error circuit generates the error voltage responsive to the regulated output voltage
摘要翻译：多相非反相降压升压电压转换器具有多个降压升压稳压器。每个调节器与单独的相关联，用于响应输入电压产生稳定的输出电压。多个电流传感器各自与多个降压升压电压调节器中的一个相关联，用于监视到相关联的降压升压电压调节器的输入电流，并为相关联的相产生电流检测信号。多个降压升压模式控制电路各自与降压升压调节器中的一个相关联，所述降压升压调节器用于在降压操作模式下使用峰值电流模式控制来控制相关联的降压升压电压调节器，并且响应于一个升压模式常见的误差电压和相关的电流检测信号。多个降压升压模式控制电路提供相间的电流平衡。电压误差电路响应于调节的输出电压产生误差电压

7. 发明申请

US20110187336A1 NON-INVERTING BUCK BOOST VOLTAGE CONVERTER 有权
标题翻译：非反相BUCK升压转换器
公开(公告)号：US20110187336A1
公开(公告)日：2011-08-04
申请号：US12848579
申请日：2010-08-02
申请人： XUELIN WU , CONGZHONG HUANG , MICHAEL M. WALTERS
发明人： XUELIN WU , CONGZHONG HUANG , MICHAEL M. WALTERS
IPC分类号： G05F1/10
CPC分类号： G05F1/10 , H02M3/1582
摘要： A non-inverting buck boost voltage converter includes a buck boost voltage regulation circuitry for generating a regulated output voltage responsive to an input voltage. A current sensor monitors an input current to the buck boost voltage regulation circuitry. Buck boost mode control circuitry controls the buck boost voltage regulation circuitry using peak current mode control in a buck mode of operation and valley current mode control in boost mode of operation responsive to the monitored input current.
摘要翻译：非反相降压升压电压转换器包括降压升压电压调节电路，用于响应于输入电压产生调节的输出电压。电流传感器监测降压升压电压调节电路的输入电流。降压升压模式控制电路使用降压模式下的峰值电流模式控制降压升压电压调节电路，并根据监控的输入电流在升压模式下进行谷值电流模式控制。

8. 发明申请

US20050105204A1 Fly height control for a read/write head in a hard disk drive 有权
标题翻译：在硬盘驱动器中读/写磁头的飞行高度控制
公开(公告)号：US20050105204A1
公开(公告)日：2005-05-19
申请号：US10715217
申请日：2003-11-17
申请人： Bryan Bloodworth , Congzhong Huang , Michael Sheperek , Jeremy Kuehlwein
发明人： Bryan Bloodworth , Congzhong Huang , Michael Sheperek , Jeremy Kuehlwein
IPC分类号： G11B5/48 , G11B5/60 , G11B21/02 , G11B21/21
CPC分类号： G11B21/21 , G11B5/6064 , G11B5/607
摘要： A fly height controller (10FHC; 10FHC′) for controlling the fly height of a read/write head assembly (15) in a disk drive (20) is disclosed. A heat element resistor (30) is disposed within the read/write head assembly (15). The fly height controller (10FHC; 10FHC′) includes registers (32R, 32W) for storing digital data words corresponding to the desired drive levels to be applied to the heat element resistor (30) during read and write operations. The registers (32R, 32W) are selectively coupled to a steady-state digital-to-analog converter (DAC) (36), depending upon whether a read or write operation is occurring; the output of the steady-state DAC (36) is applied to a voltage driver (40), which in turn drives current into the heat element resistor (30). Overdrive and underdrive transistors (44P, 44N) are provided to overdrive and underdrive the input to the voltage driver (40) in transitions between read and write operations. An initial state register (50) receives a digital word indicating the desired current for the heat element resistor (30) when unselected; the output of the initial state register (50) is applied to an initial state DAC (52), which drives an initial state voltage driver (54). Control logic (35; 35′) controls whether the steady-state voltage driver (40) or initial state voltage driver (54) drives the heat element resistor (30). The fly height controller (10FHC′) may also be adapted to control the fly height of multiple read/write head assemblies (15) in a disk drive.
摘要翻译：公开了一种用于控制磁盘驱动器（20）中的读/写磁头组件（15）的飞行高度的飞行高度控制器（10FHC; 10FHC'）。读/写头组件（15）内设有一个热元件电阻（30）。飞行高度控制器（10FHC; 10FHC'）包括用于在读取和写入操作期间存储对应于要施加到热元件电阻器（30）的期望驱动电平的数字数据字的寄存器（32R，32W）。取决于是否发生读取或写入操作，寄存器（32R，32W）选择性地耦合到稳态数模转换器（DAC）（36）稳态DAC（36）的输出被施加到电压驱动器（40），电压驱动器又驱动电流进入热元件电阻器（30）。提供过驱动和欠驱动晶体管（44P，44N）以在读取和写入操作之间的过渡中对驱动器（40）的输入进行过驱动和低驱动。当未选择时，初始状态寄存器（50）接收指示热元件电阻器（30）的期望电流的数字字; 初始状态寄存器（50）的输出被施加到驱动初始状态电压驱动器（54）的初始状态DAC（52）。控制逻辑（35; 35'）控制稳态电压驱动器（40）或初始状态电压驱动器（54）是否驱动热元件电阻（30）。飞行高度控制器（10FHC'）也可以适于控制磁盘驱动器中的多个读/写头组件（15）的飞行高度。

9. 发明授权

US08334683B2 System and method for current limiting a DC-DC converter 有权
标题翻译：用于限流DC-DC转换器的系统和方法
公开(公告)号：US08334683B2
公开(公告)日：2012-12-18
申请号：US13052820
申请日：2011-03-21
申请人： Congzhong Huang , Sicheng Chen , Xuelin Wu
发明人： Congzhong Huang , Sicheng Chen , Xuelin Wu
IPC分类号： G05F1/44
CPC分类号： G05F1/46 , H02M1/15 , H02M1/32 , H02M3/1582
摘要： A DC-DC voltage converter has a pair of switching transistors to provide an output voltage and are alternately switched in a boost mode of operation responsive to control signals. An inductor is connected to the pair of switching transistor and has an inductor current flowing there through. A current sensor monitors an input current and generates a current sense signal responsive thereto. Control circuitry generates the control signals to the second pair of switching transistors responsive to the current sense signal, the output voltage and a current limit signal, wherein when the current limit signal indicates the inductor current exceeds a current limit the control signals configure the pair of switching transistors to decrease the inductor current.
摘要翻译： DC-DC电压转换器具有一对开关晶体管以提供输出电压，并且响应于控制信号而在升压操作模式中交替切换。电感器连接到该对开关晶体管，并且具有在其中流过的电感器电流。电流传感器监测输入电流并响应于此产生电流检测信号。响应于电流感测信号，输出电压和电流限制信号，控制电路产生对第二对开关晶体管的控制信号，其中当电流限制信号指示电感器电流超过电流限制时，控制信号配置一对开关晶体管降低电感电流。

10. 发明申请

US20120229110A1 HIGH EFFICIENCY PFM CONTROL FOR BUCK-BOOST CONVERTER 有权
标题翻译： BUCK-BOOST转换器的高效PFM控制
公开(公告)号：US20120229110A1
公开(公告)日：2012-09-13
申请号：US13341496
申请日：2011-12-30
申请人： CONGZHONG HUANG , SHEA PETRICEK
发明人： CONGZHONG HUANG , SHEA PETRICEK
IPC分类号： G05F1/46
CPC分类号： H02M3/1582
摘要： A buck/boost voltage regulator generates a regulated output voltage responsive to an input voltage and a plurality of control signals. The buck/boost voltage regulator includes a plurality of switching transistors responsive to the plurality of control signals. Control circuitry monitors the regulated output voltage and generates the plurality of control signals responsive thereto. The control circuitry controls the operation of the plurality of switching transistors to enable a charging phase in a first mode of operation, a pass through phase in a second mode of operation and a discharge phase in a third mode of operation within the buck/boost voltage regulator to eliminate occurrence of a four switch switching condition.
摘要翻译：降压/升压稳压器响应于输入电压和多个控制信号产生调节的输出电压。降压/升压稳压器包括响应于多个控制信号的多个开关晶体管。控制电路监视调节的输出电压并响应于此产生多个控制信号。控制电路控制多个开关晶体管的操作，以使第一工作模式下的充电阶段，第二工作模式中的通过阶段和降压/升压电压内的第三工作模式中的放电阶段调节器消除了四个开关切换条件的发生。

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