HV9906DB3

HV9906DB3 Off-Line PFC Current Source Controller Introduction The Supertex HV9906DB3 demo board is a power factor corrected (PFC) LED driver using the HV9906 IC. A power converter of the demo board consists of an input buck-boost stage and an output buck stage. The output voltage polarity is negative. Due to its unique quadratic input-to-output DC voltage transfer ratio, the converter can operate directly off AC line to produce low-voltage output without need for electrolytic capacitors. The HV9906 is designed for optimally controlling this type of a power converter or other types of two-stage multi-converters. HV9906DB3 demo board features passive power factor correction to PF>0.95. The board is optimized for driving a 500mA (700mA max.) LED array. (Forced cooling or encapsulation is required to achieve an output current higher than 500mA.) Features Off-Line Transformerless Power Conversion Power Factor Correction to PF>0.95 Soft Start Low Inrush Current on Start Specification Input Voltage Output Current Output Voltage Power Factor Total AC Line Harmonic Distortion (THD) Efficiency 80 to 135VAC, 47-63 Hz or 100 to 200VDC 500mA ±10% (700mA max.) 10V max. >0.95 <15% 60% (Vo=10V, Io=0.5A, Vin=100VAC) Board Layout and Connections ~ WARNING!!! Do not connect to scope ground or to the ground of other earth-grounded instruments. Doing so will short the AC line, resulting in damage to the circuit and/or instruments. Either use an isolation transformer on the AC lin...