EVL185W-LEDTV STMicroelectronics, EVL185W-LEDTV Datasheet - Page 24

• Manufacturer Part Number: EVL185W-LEDTV
• Description: DEMO BOARD VIPER27L L6564 L6599A
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of EVL185W-LEDTV

• Design Resources: EVL185W-LED BOM EVL185W-LED Schematic
• Main Purpose: Power Supply with PFC
• Outputs And Type: 4, Isolated
• Power - Output: 185W
• Voltage - Output: 130V, 24V, 12V, 5V
• Current - Output: 620mA,2A, 4A, 2A
• Voltage - Input: 90 ~ 264VAC
• Regulator Topology: -
• Frequency - Switching: -
• Board Type: Fully Populated
• Utilized Ic / Part: Viper27L, L6564, L6599A
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11255

Functional check
24/43
Figure 41. 24 V current limitation at full load
Figure 43. 12 V short-circuit at full load and
CH1: 24 V o/p voltage CH2: CSS
CH1: LVG
CH3: ISEN
CH3: ISEN
cause IC shutdown, therefore providing the system with immunity to short duration
phenomena. If, instead, the overload condition continues, the mentioned procedure for
shutting down the L6599A is activated.
V, 12 V, and 130 V outputs respectively; the voltage on ISEN reaches the second
comparator threshold, the L6599A immediately shuts down and the operation is resumed
after an off-on cycle.
Figure 45
the resonant outputs the Zener diodes D16, D17, and D29 detect the output voltages and
conduct. Then Q10 conducts and turns on Q9 too. These two transistors are configured as
an SCR that shorts to ground the anode of the U5 optocoupler. In this way the Q7 is no
longer delivering the Vcc to the controllers and stays permanently latched until the mains
voltage is recycled.
and 115 Vac - 60 Hz
115 Vac - 60 Hz
and
CH4: 24 V o/p current
CH4: 24 V o/p current
CH2: DELAY
46
show the OVP intervention. In the case of overvoltage of one or more of
Doc ID 18449 Rev 1
Figure
Figure 42. 24 V short-circuit at full load and
Figure 44. 130 V short-circuit at full load and
CH1: LVG
CH1: LVG
CH3: ISEN
CH3: ISEN
42, 43, and
115 Vac - 60 Hz
115 Vac - 60 Hz
44
show dead short events on 24
CH4: 24 V o/p current
CH4: 24 V o/p current
CH2: DELAY
CH2: DELAY
AN3339