(19)
(11) EP 2 919 559 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.10.2015 Bulletin 2015/42

(43) Date of publication A2:
16.09.2015 Bulletin 2015/38

(21) Application number: 15157687.3

(22) Date of filing: 05.03.2015
(51) International Patent Classification (IPC): 
H05B 33/08(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA

(30) Priority: 10.03.2014 JP 2014046174

(71) Applicant: SANKEN ELECTRIC CO., LTD.
Niiza-shi, Saitama 352-8666 (JP)

(72) Inventors:
  • Kato, Junichi
    Niiza-shi, Saitama 352-8666 (JP)
  • Matsunaga, Yasuyuki
    Niiza-shi, Saitama 352-8666 (JP)

(74) Representative: Grünecker Patent- und Rechtsanwälte PartG mbB 
Leopoldstraße 4
80802 München
80802 München (DE)

   


(54) Driving apparatus of light emitting load and light emitting apparatus for vehicle


(57) A light emitting load driving apparatus includes a first switching element, a second switching element, and a gate driver, to drive first and second light emitting loads connected in series. The first switching element, when in an ON state, bypasses a current to be passed to the first light emitting load. The second switching element, when in an ON state, bypasses a current to be passed to the second light emitting load. The gate driver reduces at least one of an overshoot current caused when the first and second switching elements are simultaneously turned on and an undershoot current caused when the first and second switching elements are simultaneously turned off.







Search report









Search report