Invention Grant
- Patent Title: Driver circuit with reduced current ripple
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Application No.: US17572847Application Date: 2022-01-11
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Publication No.: US11647573B2Publication Date: 2023-05-09
- Inventor: Shijun Nie , Shaoping Chen
- Applicant: LEDVANCE GmbH
- Applicant Address: DE Garching bei Munchen
- Assignee: LEDVANCE GMBH
- Current Assignee: LEDVANCE GMBH
- Current Assignee Address: DE Garching bei Munchen
- Agency: Hayes Soloway PC
- Priority: CN 2110056001.8 2021.01.15
- Main IPC: H05B45/345
- IPC: H05B45/345 ; H05B45/385

Abstract:
A ripple reduction circuit for reducing a current ripple of a driver is provided. The driver circuit comprises an input section with input contacts for connecting the driver circuit to an AC power supply providing an AC input current and a power section for providing an output power, the power section comprising a power transformer and a power switch connected in series with a primary winding of the power transformer. The driver circuit further comprises a ripple reduction circuit with an inductance and a capacitive and two diodes, the ripple reduction circuit being configured such that, in operation, the inductance and the capacitance can be alternately charged and discharged, depending on the switching state of the power switch.
Public/Granted literature
- US20220232681A1 Driver Circuit with Reduced Current Ripple Public/Granted day:2022-07-21
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