SUNSUN LIGHTING CHINA CO., LTD. Patent applications |
Patent application number | Title | Published |
20140183569 | LED CHIP UNIT AND MANUFACTURING METHOD THEREOF, AND LED MODULE - An LED chip unit and manufacturing method thereof, a LED module, an illuminating device and a display device. The LED chip unit includes a plurality of LED cores which are electrically isolated from each other. The LED chip unit is used for a cutting unit of an epitaxial wafer, so that scraping channels between the LED chip units are only reserved. The area which the space between the adjacent cores occupies is less than the scraping channel, so that utilization ratio of the epitaxial wafer is increased. The cores are integrated and the LED chip unit is packaged on the base plate as a basic unit, so that the cores are packaged on the base plate at a time thereby simplifying packaging. | 07-03-2014 |
20140016384 | CURRENT SENSING CIRCUIT AND CONTROL CIRCUIT THEREOF AND POWER CONVERTER CIRCUIT - A current sensing circuit and the control circuit thereof and a power converter circuit. The current sensing circuit includes a sample and hold circuit ( | 01-16-2014 |
20140016381 | CURRENT DETECTING CIRCUIT, CONTROLLING CIRCUIT AND POWER CONVERSION CIRCUIT - The present invention provides a current detection circuit, a controlling circuit using the current detection circuit and a power conversion circuit using the controlling circuit, the current detection circuit comprises a sample keeping circuit, a rising edge detection circuit, a falling edge detection circuit, a sequential controlling circuit, a synchronous detection circuit and a lowpass filter. The inventive current detection circuit for the power conversion circuit obtains signals of the output current by detecting loop current of the master switch and processing the loop current. | 01-16-2014 |
20130033110 | POWER SUPPLY CIRCUIT WITH LOW-VOLTAGE CONTROL AND PRODUCING METHOD THEREOF - A power supply circuit with low-voltage control and a producing method thereof. The circuit includes an auxiliary power supply, a high-voltage startup unit, a switching circuit, and a control circuit. When the circuit is powered on, a storage capacitor in the switching circuit is charged by the high-voltage startup unit and supplies the control circuit with a low-voltage power source so that the control circuit is started up completely. After the circuit enters a normal operation state, the control circuit detects the voltage across the storage capacitor and dynamically controls the switching circuit to charge the storage capacitor so that a steady low-voltage power source supplied for the control circuit is obtained. Without reducing the efficiency of the power supply, the circuit is simplified and the cost is lowered. | 02-07-2013 |