Техническая Спецификация для STMicroelectronics 170 W power supply with PFC and standby supply for flat TV using the L6564, L6599A, and Viper27LN EVL EVL170W-FTV

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Doc ID 18376 Rev 1

The average efficiency has been calculated according to ENERGY STAR 2.0 criteria. 
Results are summarized in 

 and 

.

Standby supply efficiency has been measured and the results are plotted in 

shown, the efficiency during rated load operation is above 82 %, over the whole input mains 
voltage range, from 50 % to full load. 

Efficiency during standby operation at very light load, like microprocessor and wake-up 
circuitry, is plotted in 

. As shown, in this condition it is higher than 35 % at 230 Vac, 

therefore, it allows to supply the microprocessor with a significant low consumption from the 
mains. It should be mentioned that the standby supply efficiency has been calculated 
measuring the input power at the input connector, including power loss contribution due to 
all residual loads connected to mains before and after the input bridge rectifier, like the EMI 
filter and PFC resistor dividers.

         

         

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