Key facts
- Brand
- STMicroelectronics
- Model
- VIPER27LN
- Category
- Power Management
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-06
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ST AN3339 Application note 185 W power supply with PFC standby supply for LED TV using the L6564 L6599A Viper27LN handbook
The document details the characteristics and features of an EVL185W-LEDTV demonstration board. The architecture employs a three-stage approach: a front-end PFC pre-regulator based on the L6564, a downstream LLC resonant half bridge converter using the L6599A delivering 12 V, 24 V, and 130 V outputs, and a flyback-based standby supply controlled by the Viper27LN.
Read onlineSTMicroelectronics VIPER27LN specifications
| Input mains range | 90 + 264 Vac - frequency 45 + 65 Hz |
|---|---|
| Output voltage 1 (Backlight) | 130 V +8 % at 620 mA |
| Output voltage 2 (Audio) | 24 V +8 % at 2 A |
| Output voltage 3 (Panel) | 12 V +1 % at 4 A |
| Output voltage 4 (Microprocessor) | 5 V +2 % at 2 A |
| Standby mains consumption | <170 mW at 230 Vac with 50 mW load |
| Overall efficiency | >90 % at full load |
All STMicroelectronics VIPER27LN documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the main purpose of this document?
It describes a 185 W, wide input mains range, power-factor-corrected demonstration board for LED TV.
Which controllers are used in this design?
The design uses the L6564 PFC controller, L6599A resonant controller, and Viper27LN.
What output voltages and currents does this power supply provide?
The supply provides 24 V at 6 A, 12 V at 2 A, and 5 V at 2 A.
From: AN3329: 170 W PFC Standby Supply for Flat TV using L6564, L6599A and Viper27LN
What is the maximum mains input voltage range?
The unit accepts a universal input range of 90 to 264 Vac.
From: AN3329: 170 W PFC Standby Supply for Flat TV using L6564, L6599A and Viper27LN
What is the input voltage range of the VIPER27LN demonstration board?
The board supports a wide input voltage range from 90 V to 265 V.
From: STMicroelectronics AN2929 VIPER27LN Demonstration Board Application Note
What is the maximum output current of the demonstration board?
The maximum output current is rated at 2.4 A.
From: STMicroelectronics AN2929 VIPER27LN Demonstration Board Application Note