September 6, 2005
Realized the World's Highest Speed (18ns)
Fast Recovery Diode with low noise and high breakdown voltage
|Sanken Electric Co., Ltd. has developed three types of fast recovery rectifier diodes under the FMX Series - low noise, high breakdown voltage and the shortest reverse recovery time in the world (18 ns*)- optimum for plasma TVs.
Samples will be available from September 15. Mass production will be launched at the end of 2005.
Sample price: 240 yen for FMXJ-1103S (300V, 10A), 260 yen for FMXJ-1104S (400V, 10A), and 300 yen for FMXJ-2164S (400V, 16A).
*Surveyed by Sanken Electric as of September 2005
|Recently, there have been growing demands for plasma TVs. In order for the driver circuits of the display panels to achieve higher efficiency for energy saving and lower electromagnetic noise for higher picture quality, fast recovery diodes are required to have shorter reverse recovery time (trr) for power-loss reduction and to have lower noise as well as high breakdown voltage.
However, the conventional fast recovery diodes, though easy in heightening the breakdown voltages, are limited in achieving the higher speeds and in lowering the power losses due to the structure. In addition, the noise tends to increase as the reverse recovery time is shortened - a sort of trade-off. Therefore, it is extremely difficult to achieve both higher speed and loss reduction at the same time.
Sanken Electric has developed the innovative structure JBS (*1) that combines into the structure of the fast recovery diode the structure of the schottky barrier diode which is easy in achieving higher speed and in lowering the power loss. Employing this structure and also Sanken's proprietary Lifetime Control technology (*2) has realized the new fast recovery diodes with high breakdown voltages (300V and 400V), extremely high speed (Reverse recovery time: 18 ns. Improves 40% or more at high temperature compared with Sanken's conventional counterparts) and low noise.
Optimum for such circuits and power supplies that require high voltages and high-frequency outputs as follows:
|4.||Electrical Characteristics of FMXJ Series