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LED driving apparatus and lighting apparatus including same

  • US 9,860,955 B2
  • Filed: 03/31/2016
  • Issued: 01/02/2018
  • Est. Priority Date: 09/02/2015
  • Status: Active Grant
First Claim
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1. A light emitting diode (LED) driving apparatus comprising:

  • a power supply circuit configured to supply driving power to a first LED group and a second LED group, the first LED group and the second LED group being configured to emit light having different color temperatures;

    a current controlling circuit configured to control a first magnitude of a first current flowing through the first LED group and a second magnitude of a second current flowing through the second LED group; and

    an LED controller comprising a first common control switch configured to simultaneously change on/off switching operations of a first LED of the first LED group and a second LED of the second LED group and a second common control switch configured to simultaneously change on/off switching operations of a third LED of the first LED group and a fourth LED of the second LED group.

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