Invention Application
- Patent Title: CURRENT MEASURING DEVICE FOR SWITCHED-MODE POWER CONVERTERS AND REGULATION CIRCUIT FOR APPLICATION OF THE CURRENT MEASURING DEVICE
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Application No.: US17719383Application Date: 2022-04-13
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Publication No.: US20220334150A1Publication Date: 2022-10-20
- Inventor: Joachim Muehlschlegel
- Applicant: OSRAM GmbH
- Applicant Address: DE Munich
- Assignee: OSRAM GmbH
- Current Assignee: OSRAM GmbH
- Current Assignee Address: DE Munich
- Priority: DE102021203742.9 20210415
- Main IPC: G01R19/02
- IPC: G01R19/02 ; H02M1/00 ; H02M1/32 ; H05B45/3725 ; H02M3/156

Abstract:
A current measuring device for switched-mode electronic power converters includes two independent sensors connected in series for the current to be measured, one of said sensors providing an admittance and the other providing a conductance. The current measuring device further includes a parallel current measuring resistor and an average value capacitor which are connected in parallel contribute to the provided admittance. The conductance is provided by a serial current measuring resistor as one of the sensors. The current to be measured has both DC and AC current components. The current measuring device further includes a filter is transferred back into the power path or merged with the current measuring sensors.
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