EVL170W-FTV STMicroelectronics, EVL170W-FTV Datasheet - Page 28

• 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

Functional check
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Figure 56. Half cycle mains dip at full load and
CH1: HB voltage
CH3: 24 V output
Mains sags/dips
Figure 56
complete cycle (16.6 ms) mains dip. As can be noted, in both cases the PFC output voltage
drops but the L6599A still works correctly, and output voltages do not show any disturbance,
therefore demonstrating a good immunity of the circuit against mains dips.
115 Vac - 60 Hz
and
CH2: PFC drain
CH4: PFC gate
57
show the converter behavior in the case of half-cycle (8.3 ms) or a
Doc ID 18376 Rev 1
Figure 57. Full cycle mains dip at full load and
CH1: HB voltage
CH3: 24 V output
115 Vac - 60 Hz
CH2: PFC drain
CH4: PFC gate
AN3329