Discharge circuitry design for peak current elimination of exchangeable modules
AssigneeSignify Holding B.V.
InventorsPeter Hubertus Franciscus Deurenberg, Herman Johannes Gertrudis Gielen, Remco Christianus Wilhelmus Leermakers
Life of this patent
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Abstract
The invention describes a replaceable LED circuit for coupling to an LED driver. The replaceable LED circuit comprises a pair of input pins for receiving a power supplied by LED driver, an LED string coupled between the pair of input pins for receiving the power, and a surge protection circuit coupled in parallel to the LED string. The surge protection circuit comprises a capacitor arranged to charge when the power is supplied to the LED string, and a current regulator coupled in series with the capacitor and arranged such that it allows the capacitor to charge and prevents the capacitor to discharge into the LED string.
Claims11
A replaceable light emitting diode (LED) circuit arranged to be coupled to an active LED driver, the replaceable LED circuit comprising:
- a pair of input pins (In) for receiving a power supplied by the LED driver,
- an LED string coupled between the pair of input pins (In) for receiving the power, and
- a surge protection circuit coupled in parallel to the LED string, the surge protection circuit comprising:
- a capacitor (C1, C2, C3) arranged to charge when the power is supplied to the LED string,
- a current regulator (D1, Q1) coupled in series with the capacitor (C1, C2, C3) and arranged such that it allows the capacitor (C1, C2, C3) to charge and prevents the capacitor (C1, C2, C3) to discharge into the LED string.
A replaceable light emitting diode (LED) circuit arranged to be coupled to an active LED driver, the replaceable LED circuit comprising:
- a pair of input pins (In) for receiving a power supplied by the LED driver,
- an LED string coupled between the pair of input pins (In) for receiving the power, and
- a surge protection circuit coupled in parallel to the LED string, the surge protection circuit comprising:
- a capacitor (C1, C2, C3) coupled in parallel to the LED string and arranged to charge when the power is supplied to the LED string,
- a current regulator (D1, Q1) coupled in series with the capacitor (C1, C2, C3) and arranged such that it allows the capacitor (C1, C2, C3) to charge and prevents the capacitor (C1, C2, C3) to discharge into the LED string.
Dependencies are inferred from the claim text.