EVL185W-LEDTV Datasheet, PDF (1/5 Pages) STMicroelectronics – RoHS compliant

EVL185W-LEDTV
185 W power supply with PFC and standby supply for LED TV
based on the L6564, L6599A and Viper27L
Data brief
Features
■ Universal input mains range: 90÷264 Vac -
frequency 45÷65 Hz
■ Output voltage 1: 130 V ±8 % at 620 mA for
backlight
■ Output voltage 2: 24 V ±8 % at 2 A for audio
supply
■ Output voltage 3: 12 V ±1 % at 4 A for panel
supply
■ Output voltage 4: 5 V ±2 % at 2 A for
microprocessor supply
■ Mains harmonics: acc. to EN61000-3-2 Class-
D or JEITA-MITI Class-D
■ Standby mains consumption: <170 mW at 230
Vac with 50 mW load
■ Overall efficiency at full load: >90%
■ EMI: according to EN55022-Class-B
■ Safety: according to EN60065
■ Dimensions: 115x204 mm, 25 mm maximum
component height from PCB
■ PCB: single side, 70 µm, CEM-1, mixed
PTH/SMT introduction
■ RoHS compliant
the logic circuitry, and a bigger section composed
of a front-end PFC, using the new TM L6564 and
an LLC resonant converter, using the L6599A,
delivering three output voltages: 12 V dedicated
to supplying the TV panel, 24 V to supplying the
audio power amplifiers, and 130 V dedicated to
the backlight.
The PFC stage delivers 400 V constant voltage
and acts as the pre-regulator for both the LLC
stage and the standby supply.
An external signal, referred to secondary ground,
turns the PFC and the LLC stage on and off.
Description
The EVL185W-LEDTV is a high-end
demonstration board tailored to the specifications
of a typical LED TV application. The peculiarities
of this design are the very high average efficiency
of about 90%, without synchronous rectification,
and very low no load consumption of 100 mW at
230 Vac. The result is that this converter is
compliant to the most demanding ENERGY
STAR^® eligibility criteria. The architecture is made
up of two sections, based on a three-stage
approach: a 10 W standby supply using the new
VIPer27L, which delivers the 5 V standby
dedicated to supplying the microprocessor and
April 2011
Doc ID 018695 Rev 1
For further information contact your local STMicroelectronics sales office.
1/5
www.st.com
5