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Class 2 circuit protection

A current and current source technology, applied in the field of category 2 circuit protection, can solve problems that do not meet category 2

Pending Publication Date: 2021-11-12
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this occurs, one of the LEDs 115, 120 that is operating, the inductor 110, etc. may not comply with Category 2 (eg, exceeding Category 2 criteria may result in a higher probability of shock to the user)
Thus, the introduction of the inductor 110 may provide enhanced performance control of the tunable white circuit under normal operating conditions, but also introduce heat / cold issues when at least one of the LEDs 115, 120 fails

Method used

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  • Class 2 circuit protection
  • Class 2 circuit protection
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Examples

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Embodiment Construction

[0017] A further understanding of the exemplary embodiments may be obtained by reference to the following description and the associated drawings, wherein like elements are provided with the same reference numerals. Exemplary embodiments relate to devices, systems, and methods for protecting a category 2 circuit of an electronic device configured as a tunable white circuit including a plurality of loads. Exemplary embodiments provide a protection mechanism that addresses open circuit high voltage on a first load due to a second load failure. By using the exemplary embodiments to address this scenario, class 2 circuits can remain class 2 compliant. A protection mechanism according to an exemplary embodiment provides a first protector based on voltage control and a second protector based on semiconductor control.

[0018] Exemplary embodiments are described with respect to specific circuit components interconnected within a tunable white circuit of an electronic device. Exempl...

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PUM

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Abstract

Disclosed are a device, system, and method protect circuits of a lighting device. The lighting device includes a current source generating a current and a first load and a second load receiving the current. The lighting device includes an inductor positioned between the current source and the first and second loads that balances the current powering the first and second loads. The lighting device includes a detector monitoring a voltage peak of the first 5 and second loads. The lighting device includes a voltage controller receiving a reading of the voltage peak from the detector and determining when the voltage peak is at least a voltage peak threshold. The voltage controller is configured to adjust a setting for the current generated by the current source based on the reading of the voltage peak.

Description

Background technique [0001] Power supplies provide energy to various components of electronic equipment. For example, electronic devices may include lighting components such as light emitting diodes (LEDs). The illumination of the lighting components may be based on the operating parameters of the LEDs, the current received by the LEDs, and the like. The electronic device may include yet another lighting component. Two lighting components are operable in series to generate a predetermined lighting appearance (eg, selected shadows). For example, the electronics of the two lighting components could be tunable white circuits. [0002] A tunable white circuit may utilize two separate LEDs operating at different lighting temperatures (eg, measured in Kelvin (K)). The combined lighting effect of two individual LEDs in a tunable white circuit generates dynamically selectable brightness output by reducing and increasing the intensity of individual LEDs and modifying the lighting t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/50H05B45/52H05B45/20H05B45/46
CPCH05B45/20H05B45/46H05B45/52H05B45/54H05B45/24
Inventor 方玉红B·克劳伯格A·普雷马拉吉
Owner SIGNIFY HLDG BV
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