Method for improving EMC robustness of integrated capacitive sensors

    公开(公告)号:US11320472B2

    公开(公告)日:2022-05-03

    申请号:US15698384

    申请日:2017-09-07

    申请人: IDT EUROPE GmbH

    摘要: A method is provided for improving the EMC robustness of Integrated Capacitive Sensor systems with a sensor Signal-Conditioner (SSC). The SSC is connected with a capacitive integrating converter to convert a received signal into a bit stream. An oscillator provides a plurality of sampling frequencies. A counter connected with the capacitive integrating converter collects the bit stream and calculates the digital representative of the physical input which is than stored in an output register. The method includes performing some conversions with different sampling frequencies from the oscillator or a frequency divider by the capacitive integrating Signal-Converter; storing the results of the samplings and using the results in the following cycle to calculate for each sampling frequency a difference to the prior sampling of the same frequency; and calculating the digital representative of the input signal from the external sensing capacitor as the reverse weighted average of the samplings of the different frequencies.

    Non PWM digital DC-DC converter
    3.
    发明授权

    公开(公告)号:US09917514B2

    公开(公告)日:2018-03-13

    申请号:US14889204

    申请日:2014-05-23

    申请人: IDT EUROPE GMBH

    IPC分类号: H02M3/157 H02M3/158 H02M1/00

    摘要: A switched power converter includes a power stage for generating an output voltage according to a switching signal and an input voltage via a switching element. The switching signal is generated by a variable timing generator which is controlled by a compensator. The pulses of the switching signal are generated on a “need to have basis”. Hence, theses pulses may be generated independently of a PWM period. The pulses can be generated such that switching losses are minimized. A switching pattern can be matched to the load current pattern. Thus, the behavior of the compensator can be synchronized to a regular pattern of the load current. A high resolution variable timing generator may be employed.

    ADAPTIVE CONTROLLER BASED ON TRANSIENT NORMALIZATION

    公开(公告)号:US20180062496A1

    公开(公告)日:2018-03-01

    申请号:US15804729

    申请日:2017-11-06

    申请人: IDT EUROPE GMBH

    发明人: Anthony KELLY

    摘要: A controller is provided for controlling a power stage of a power converter according to a control law, the control law implementing a specific type of compensator and being pre-designed to generate an objective response of a default power converter for a default parameter value of a component of the power stage. The controller is further configured to determine an actual response for an actual parameter value of the component of the power stage and to alter the control law for the actual parameter value of the component of the power stage such that the actual response matches the objective response. The controller determines a degree of matching between the actual response and the objective response by filtering the actual response to generate a filtered actual response and integrating a product of the filtered actual response and a delayed actual response.

    METHOD FOR IMPROVING EMC ROBUSTNESS OF INTEGRATED CAPACITIVE SENSORS

    公开(公告)号:US20180074102A1

    公开(公告)日:2018-03-15

    申请号:US15698384

    申请日:2017-09-07

    申请人: IDT EUROPE GmbH

    发明人: Reinhard KAUERT

    摘要: A method is provided for improving the EMC robustness of Integrated Capacitive Sensor systems with a sensor Signal-Conditioner (SSC). The SSC is connected with a capacitive integrating converter to convert a received signal into a bit stream. An oscillator provides a plurality of sampling frequencies. A counter connected with the capacitive integrating converter collects the bit stream and calculates the digital representative of the physical input which is than stored in an output register. The method includes performing some conversions with different sampling frequencies from the oscillator or a frequency divider by the capacitive integrating Signal-Converter; storing the results of the samplings and using the results in the following cycle to calculate for each sampling frequency a difference to the prior sampling of the same frequency; and calculating the digital representative of the input signal from the external sensing capacitor as the reverse weighted average of the samplings of the different frequencies.

    METHOD FOR IMPROVING EMC ROBUSTNESS OF INTEGRATED CAPACITIVE SENSORS

    公开(公告)号:US20220236308A1

    公开(公告)日:2022-07-28

    申请号:US17721279

    申请日:2022-04-14

    申请人: IDT EUROPE GmbH

    摘要: A method is provided for improving the EMC robustness of Integrated Capacitive Sensor systems with a sensor Signal-Conditioner (SSC). The SSC is connected with a capacitive integrating converter to convert a received signal into a bit stream. An oscillator provides a plurality of sampling frequencies. A counter connected with the capacitive integrating converter collects the bit stream and calculates the digital representative of the physical input which is than stored in an output register. The method includes performing some conversions with different sampling frequencies from the oscillator or a frequency divider by the capacitive integrating Signal-Converter; storing the results of the samplings and using the results in the following cycle to calculate for each sampling frequency a difference to the prior sampling of the same frequency; and calculating the digital representative of the input signal from the external sensing capacitor as the reverse weighted average of the samplings of the different frequencies.

    Device for determining the absolute position of a movable body

    公开(公告)号:US10203223B2

    公开(公告)日:2019-02-12

    申请号:US15371313

    申请日:2016-12-07

    申请人: IDT EUROPE GMBH

    发明人: Josef Janisch

    摘要: In a device for determining absolute position of a mobile element in reference to two magneto-sensitive sensors, having a source of a magnetic field fastened to the element, a first sensor signal and a second sensor signal are measured with one magneto-sensitive sensor each. An amplitude ratio of the respective sensor signals and the off-set values about the respective zero point of the sensor signals are determined from the minimum and maximum values of the sensor signals, and from these values, scaled sensor signals are calculated that form a sum signal and a difference signal, which are scaled, with the determination of the minimum and the maximum values occurring by a relative movement of the element over a full range of motion, and an absolute position is calculated via the scaled sum signal and the scaled difference signal.