EVL185W-LEDTV STMicroelectronics, EVL185W-LEDTV Datasheet - Page 8

• 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

Main characteristics and circuit description
AN3339
also turns on. These two transistors form an SCR structure that shorts to ground the anode
of the U5 optocoupler in case of an overvoltage event. In this way, Q7 cannot deliver supply
voltage Vcc to the controller which remains latched until the mains voltage is recycled.
To protect the PFC and LLC controllers from being powered with an abnormal voltage,
which may occur in the case of a failure of the regulator based on Q7, an overvoltage
protection is provided by the Zener diode D13. In the case of the Q7 regulator providing an
excessive output voltage, D13 is reverse-biased and latches the L6599A through the DIS pin
(#8).
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Doc ID 18449 Rev 1