- Patent Title: Light emitting diode, LED, based current splitter for splitting an LED current between a plurality of LED channels as well as a multi-channel light emitting diode, LED, based lighting device
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Application No.: US17637750Application Date: 2020-09-01
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Publication No.: US11997773B2Publication Date: 2024-05-28
- Inventor: Henricus Marius Joseph Maria Kahlman
- Applicant: SIGNIFY HOLDING B.V.
- Applicant Address: NL Eindhoven
- Assignee: SIGNIFY HOLDING B.V.
- Current Assignee: SIGNIFY HOLDING B.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP 195129 2019.09.03
- International Application: PCT/EP2020/074258 2020.09.01
- International Announcement: WO2021/043730A 2021.03.11
- Date entered country: 2022-02-23
- Main IPC: H05B45/46
- IPC: H05B45/46 ; H05B45/20
Abstract:
A Light Emitting Diode, LED, based current splitter for splitting an LED current between a plurality of LED channels, wherein said current splitter comprises at least two in series connected LED circuits, wherein each LED circuit comprises a first branch (B1.1, B2.1) comprising at least one LED, a second branch (B1.2, B2.2) connected in parallel over said first branch (B1.1, B2.1) and comprising at least one LED and a branch switch (W1, W3) connected in series with said at least one LED, wherein a forward voltage of said at least one LED in said second branch (B1.2, B2.2) is lower than a forward voltage of said at least one LED in said first branch (B1.1, B2.1) and a third branch (B1.3, B2.3) connected in parallel over said first and second branch (B1.2, B2.2) and comprising a shunt switch (W2, W4) for shunting said first branch (B1.1, B2.1) and said second branch (B1.2, B2.2).
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