EVL170W-FTV STMicroelectronics, EVL170W-FTV Datasheet - Page 10

• Manufacturer Part Number: EVL170W-FTV
• Description: DEMO BOARD VIPER27 L6599A L6564
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of EVL170W-FTV

• Main Purpose: Power Supply with PFC
• Outputs And Type: 2, Isolated
• Power - Output: 170W
• Voltage - Output: 24V, 12V, 5V
• Current - Output: 6A, 2A, 2A
• Voltage - Input: 90 ~ 264VAC
• Regulator Topology: Flyback
• Frequency - Switching: 130kHz
• Board Type: Fully Populated
• Utilized Ic / Part: Viper27LN, L6564, L6599A
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11254

Efficiency measurement
10/47
Figure 3.
Figure 5.
The average efficiency has been calculated according to ENERGY STAR 2.0 criteria.
Results are summarized in
Standby supply efficiency
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
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.
Overall efficiency vs. output power Figure 4.
Standby supply efficiency vs.
output power
Figure
Figure 3
6. As shown, in this condition it is higher than 35 % at 230 Vac,
Doc ID 18376 Rev 1
and 4.
Figure 6.
Average efficiency acc. ES-2
Standby supply efficiency vs. light
load output power
Figure
AN3329
5. As