公开(公告)号：US20180109251A1

公开(公告)日：2018-04-19

申请号：US15295903

申请日：2016-10-17

Applicant: Infineon Technologies AG

Inventor： Christian Djelassi ,  Octavian Barbu ,  Markus Ladurner ,  Luca Petruzzi

IPC: H03K17/081 ,  H01L27/02 ,  H03K17/687 ,  H03K3/3565 ,  H03K19/0185

CPC classification number: H03K17/08104 ,  H01L27/0255 ,  H01L27/0288 ,  H01L28/20 ,  H01L29/866 ,  H03K3/356182 ,  H03K3/3565 ,  H03K17/6871 ,  H03K19/018521

Abstract: A driver circuit for an electronic switch is described herein. According to one embodiment the driver circuit includes an input buffer with an input node for receiving a buffer input signal, a pull-down circuit coupled to the input node and a ground node, and a pull-up circuit coupled to the input node and a supply node. The driver circuit further includes control circuitry configured to activate either the pull-down circuit or the pull-up circuit. The pull-up circuit is activated when the voltage level of the buffer input signal is above a first threshold, and the pull-down circuit is activated when the voltage level of the buffer input signal is below a second threshold.

公开(公告)号：US20170302071A1

公开(公告)日：2017-10-19

申请号：US15130775

申请日：2016-04-15

Applicant: Infineon Technologies AG

Inventor： Markus Ladurner ,  Albino Pidutti ,  Daniel Mayer

IPC: H02H7/26 ,  G01R31/28 ,  G01R31/02

CPC classification number: G01R31/2856 ,  G01R31/025 ,  G01R31/31715 ,  G06F11/00 ,  H02H3/17 ,  H02H7/26 ,  H04Q1/00

Abstract: A multi-channel device with a single diagnosis status pin may be configured to detect if one or more channels has a fault. The multi-channel device, which may operate within a system, can communicate which channel, of a plurality of channels, has the fault using only a single diagnosis status pin and no additional diagnosis control pins. The multi-channel device may output a fault signal on the diagnosis status pin and in response to an interrogation input signal on the same channel as a fault channel indicate to the system which channel is the fault channel.

公开(公告)号：US20170294922A1

公开(公告)日：2017-10-12

申请号：US15094240

申请日：2016-04-08

Applicant: Infineon Technologies AG

Inventor： Robert Illing ,  Christian Djelassi ,  Markus Ladurner ,  David Jansson

IPC: H03M1/38

CPC classification number: H03M1/38 ,  H02H3/093 ,  H03M1/365 ,  H03M1/367

Abstract: An embodiment electronic circuit includes an electronic switch comprising a load path, a first protection circuit configured to generate a first protection signal based on a current-time-characteristic of a load current through the load path of the electronic switch, and a drive circuit configured to drive the electronic switch based on the first protection signal. The first protection circuit includes a logarithmic analog-to-digital converter (ADC) configured to receive an ADC input signal representing the load current and to output an ADC output signal that includes a sequence of values such that each of the values represents a respective sample of the ADC input signal, a filter configured to filter the ADC output signal and output a filter output signal, and a comparator circuit configured to generate the first protection signal based on comparing the filter output signal with a predefined threshold.