US 10,560,997 B2
Method for MR16 lamp to pass EMI test with CCG
Yongchang Dai, Guangdong (CN); Xiaoming Fu, Guangdong (CN); Xiangyin Hao, Guangdong (CN); and Kun Xiong, Guangdong (CN)
Assigned to LEDVANCE GMBH, Garching Bei Munich (DE)
Filed by LEDVANCE GmbH, Garching bei Munchen (DE)
Filed on Sep. 11, 2018, as Appl. No. 16/127,983.
Claims priority of application No. 2017 1 0889280 (CN), filed on Sep. 27, 2017.
Prior Publication US 2019/0098726 A1, Mar. 28, 2019
Int. Cl. H05B 33/08 (2006.01); H05B 37/02 (2006.01)
CPC H05B 33/0887 (2013.01) [H05B 33/0815 (2013.01)] 20 Claims
OG exemplary drawing
1. A lamp driver for a light-emitting diode (LED) lamp, the lamp driver comprising:
a voltage input port configured to connect the lamp driver to a power source;
a boost converter circuit connected to the voltage input port;
a voltage output port configured to connect an LED to the lamp driver; and
a shutdown circuit connected to the voltage input port for detecting an input voltage of the voltage input port and connected to the boost converter circuit for controlling at least one active component of the boost converter circuit, wherein the shutdown circuit is arranged to shut down the boost converter circuit with a shutdown signal when the input voltage at the voltage input port is detected as exceeding a predetermined set point voltage value;
wherein the lamp driver is configured such that during the shutdown of the boost converter circuit, the voltage output port still provides an operation voltage for the LED.