dimmable, 9.5 w, 120 vac ccr lighting circuit evaluation board-凯发登录

the 60wledbulbgevb evaulation board showcases an enhanced parallel-to-series led lighting circuit. it uses updated control circuitry that allows the ability to accommodate multiple led voltages by simply adjusting a single resistor (r3) as well as compensating for drift in led voltage with temperature. it also has superb pf and thd performance, dimmability, low cost, and efficiency.

this circuit uses a parallel-to-series topology that dynamically adjusts led load voltage as the instantaneous bridge output voltage varies. while a switch-mode power supply such as a buck converter reconfigures the input voltage to match the load, this circuit reconfigures the load to match the input voltage. when the instantaneous input voltage is relatively low, the leds are configured in parallel. when the instantaneously input voltage is relatively high, the leds are configured in series.

the circuit is designed for input voltages between 100 vac and 140 vac . on semiconductor ccrs are used to provide constant led current and to protect leds from over-voltage conditions. the circuit employs an additional ccr (shown as ccr2) to increase led current at high voltages for improved efficiency, pf, and thd performance.

产品 状况 compliance 简短说明 所用产品 行动
60wledbulbgevb active
dimmable, 9.5 w, 120 vac ccr lighting circuit evaluation board bas21ht1g ,  , 
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mmsz5265bt1g nsic2030jbt3g
nsic2050jbt3g ,  , 
类型 文档标题 文档编号/大小 修订号
eval board: bom 60wledbulbgevb bill of materials rohs compliant  0 
eval board: gerber 60wledbulbgevb gerber layout files (zip format)  0 
eval board: schematic 60wledbulbgevb schematic  0 
eval board: test procedure 60wledbulbgevb test procedure  0 
video 60w equivalent led design demonstration - 60wledbulbgevb   

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