Invention Grant
- Patent Title: Level shifter circuit
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Application No.: US15177544Application Date: 2016-06-09
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Publication No.: US09654087B1Publication Date: 2017-05-16
- Inventor: Martin Feldtkeller
- Applicant: Infineon Technologies Austria AG
- Applicant Address: AT Villach
- Assignee: Infineon Technologies Austria AG
- Current Assignee: Infineon Technologies Austria AG
- Current Assignee Address: AT Villach
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: H03K3/00
- IPC: H03K3/00 ; H03K3/356 ; H03K3/2885

Abstract:
Techniques are disclosed for a level shifter configured to adjust current flow in response to measured current fluctuations due to common mode noise in the level shifter. For example, the level shifter includes a low-side control circuit configured to adjust a first current flowing into a first low-side terminal of an active high voltage level shifter device in response to a difference between the first low-side current and a second low-side current flowing into a second low-side terminal of an inactive high voltage level shifter device. The level shifter further includes a high-side receiver circuit configured to detect a difference between a first high-side current flowing into a first high-side terminal of the active high voltage level shifter device and a second high-side current flowing into a second high-side terminal of the inactive high voltage level shifter device.
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