公开(公告)号：US20180113159A1

公开(公告)日：2018-04-26

申请号：US15850349

申请日：2017-12-21

申请人： NEWPORT CORPORATION

发明人： Adrian Nastase ,  Jesus Delvalle

IPC分类号： G01R27/26 ,  H02N2/14 ,  H01L41/04 ,  G01R31/34

CPC分类号： G01R27/2605 ,  G01R31/343 ,  H01L41/042 ,  H02N2/142

摘要： System and method for detecting the presence and type of capacitive load that may be coupled to a power driver. The system includes a detection circuit to determine the presence and type of load based on a measured characteristic of the load in response to a drive voltage. The characteristic may be the load capacitance as measured by the current flow between the driver and load. The circuit may include a differential amplifier to generate a current-related voltage, comparators to generate pulses when the voltage exceeds respective thresholds, registers to output logic levels in response to the comparators, and a microcontroller to make the determination based on the logic levels. Alternatively, the circuit includes a differential amplifier to generate a current-related voltage, a rectifier to rectify the voltage, a peak and hold circuit to hold the peak voltage, an ADC to digitize the peak voltage, and a microcontroller to make its determination based on the digitized voltage.

公开(公告)号：US09857405B2

公开(公告)日：2018-01-02

申请号：US14440783

申请日：2013-10-21

申请人： NEWPORT CORPORATION

发明人： Adrian Nastase ,  Manny DelValle

IPC分类号： G01R27/26 ,  H01L41/04 ,  H02N2/14 ,  G01R31/34

CPC分类号： G01R27/2605 ,  G01R31/343 ,  H01L41/042 ,  H02N2/142

摘要： System and method for detecting the presence and type of capacitive load that may be coupled to a power driver. The system includes a detection circuit to determine the presence and type of load based on a measured characteristic of the load in response to a drive voltage. The characteristic may be the load capacitance as measured by the current flow between the driver and load. The circuit may include a differential amplifier to generate a current-related voltage, comparators to generate pulses when the voltage exceeds respective thresholds, registers to output logic levels in response to the comparators, and a microcontroller to make the determination based on the logic levels. Alternatively, the circuit includes a differential amplifier to generate a current-related voltage, a rectifier to rectify the voltage, a peak and hold circuit to hold the peak voltage, an ADC to digitize the peak voltage, and a microcontroller to make its determination based on the digitized voltage.

公开(公告)号：US10139440B2

公开(公告)日：2018-11-27

申请号：US15850349

申请日：2017-12-21

申请人： NEWPORT CORPORATION

发明人： Adrian Nastase ,  Jesus Delvalle

IPC分类号： G01R27/26 ,  H01L41/04 ,  H02N2/14 ,  G01R31/34

摘要： System and method for detecting the presence and type of capacitive load that may be coupled to a power driver. The system includes a detection circuit to determine the presence and type of load based on a measured characteristic of the load in response to a drive voltage. The characteristic may be the load capacitance as measured by the current flow between the driver and load. The circuit may include a differential amplifier to generate a current-related voltage, comparators to generate pulses when the voltage exceeds respective thresholds, registers to output logic levels in response to the comparators, and a microcontroller to make the determination based on the logic levels. Alternatively, the circuit includes a differential amplifier to generate a current-related voltage, a rectifier to rectify the voltage, a peak and hold circuit to hold the peak voltage, an ADC to digitize the peak voltage, and a microcontroller to make its determination based on the digitized voltage.

公开(公告)号：US20150301094A1

公开(公告)日：2015-10-22

申请号：US14440783

申请日：2013-10-21

申请人： NEWPORT CORPORATION

发明人： Adrian Nastase ,  Manny DelValle

IPC分类号： G01R27/26

CPC分类号： G01R27/2605 ,  G01R31/343 ,  H01L41/042 ,  H02N2/142

摘要： System and method for detecting the presence and type of capacitive load that may be coupled to a power driver are disclosed. The system includes a detection circuit to determine the presence and type of load based on a measured characteristic of the load in response to a drive voltage. The characteristic may be the load capacitance as measured by the current flow between the driver and load. The circuit may include a differential amplifier to generate a current-related voltage, comparators to generate pulses when the voltage exceeds respective thresholds, registers to output logic levels in response to the comparators, and a microcontroller to make the determination based on the logic levels. Alternatively, the circuit includes a differential amplifier to generate a current-related voltage, a rectifier to rectify the voltage, a peak and hold circuit to hold the peak voltage, an ADC to digitize the peak voltage, and a microcontroller to make its determination based on the digitized voltage.

摘要翻译： 公开了用于检测可耦合到功率驱动器的电容性负载的存在和类型的系统和方法。 该系统包括检测电路，用于响应于驱动电压，基于负载的测量特性来确定负载的存在和类型。 该特性可以是由驱动器和负载之间的电流流量测量的负载电容。 电路可以包括用于产生电流相关电压的差分放大器，当电压超过相应的阈值时产生脉冲的比较器，响应于比较器寄存器输出到逻辑电平，以及基于逻辑电平进行确定的微控制器。 或者，电路包括产生电流相关电压的差分放大器，整流器整流电压，峰值和保持电路以保持峰值电压，ADC对峰值电压进行数字化，以及微控制器使其基于 数字化电压。