High-output-power low-frequency-flash alternating-current direct-connection LED driving chip and device
The invention discloses a high-output-power low-frequency-flash alternating-current direct-connection LED driving chip and device. In the device, 380V three-phase alternating current is adopted to supply power to the alternating current direct connection LED driving ICs, three phases in the 380V thr...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a high-output-power low-frequency-flash alternating-current direct-connection LED driving chip and device. In the device, 380V three-phase alternating current is adopted to supply power to the alternating current direct connection LED driving ICs, three phases in the 380V three-phase alternating current are respectively matched with the three 380V alternating current directconnection LED driving ICs to drive the three groups of same LED lamp strings, and the frequency of the output power of the alternating current direct connection LED driving ICs is increased to 300Hzthrough a superposition mode by utilizing the phase characteristics of the 380V three-phase alternating current. The frequency-flash percentage is reduced by 87% or above, harm of frequency flash tohuman health is greatly reduced, due to increase of the input voltage phase number and increase of the amplitude, compared with an alternating-current direct-connection LED driving IC driven by 220V single-phase alternating cur |
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