Download Databrief

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 ClassD 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
The PFC stage delivers 400 V constant voltage
and acts as the pre-regulator for both the LLC
stage and the standby supply.
■
PCB: single side, 70 µm, CEM-1, mixed
PTH/SMT introduction
An external signal, referred to secondary ground,
turns the PFC and the LLC stage on and off.
■
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.
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
Efficiency
1
EVL185W-LEDTV
Efficiency
Thanks to the chipset used, the main peculiarities of this design are the very high efficiency
as well as the very low input consumption during standby operation.
Table 1.
Overall efficiency measured at 230 Vac mains voltage
230 V - 50 Hz
12 V
Test
24 V
130 V
Eff.
[W]
[W]
[%]
[A]
128.89
0.15
5.05
0.50
46.09
52.00
88.6
1.00
129.95
0.31
5.04
1.00
93.30
101.50
91.9
24.38
1.50
131.05
0.47
5.04
1.50
141.67 151.90
93.3
24.48
2.00
132.18
0.62
5.04
2.00
187.96 201.50
93.3
[A]
24.19
0.50
2.01
24.28
11.90
3.01
11.88
3.99
[A]
11.95
1.00
50% load eff.
11.93
75% load eff.
100% load eff.
25% load eff.
Pin
Iout
Iout
Iout
Iout
Pout
Vout
[V]
Vout
[V]
Vout
[V]
Vout
[V]
5V
[A]
Average eff.
Table 2.
91.8
Overall efficiency measured at 115 Vac mains voltage
115 V - 60 Hz
Test
12 V
24 V
130 V
5V
Pout
Pin
Eff.
[W]
[W]
[%]
Vout
[V]
Iout
Vout
[V]
Iout
[A]
Vout
[V]
Iout
[A]
Vout
[V]
Iout
[A]
25% load eff.
11.95
1.00
24.19
0.50
128.89
0.15
5.05
0.50
46.09
52.35
88.0
50% load eff.
11.93
2.01
24.28
1.00
129.95
0.31
5.04
1.00
93.30
102.85
90.7
75% load eff.
11.90
3.01
24.38
1.50
131.05
0.47
5.04
1.50
141.67 154.92
91.4
100% load eff.
11.87
3.99
24.47
2.00
132.15
0.62
5.04
2.00
187.76 206.84
90.8
Average eff.
2/5
[A]
90.2
Doc ID 018695 Rev 1
EVL185W-LEDTV
Efficiency
0IN;M7=
Figure 1.
Standby consumption
6(Z
6(Z
0OUT;M7=
!-6
Doc ID 018695 Rev 1
3/5
Revision history
2
EVL185W-LEDTV
Revision history
Table 3.
4/5
Document revision history
Date
Revision
04-Apr-2011
1
Changes
Initial release.
Doc ID 018695 Rev 1
EVL185W-LEDTV
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2011 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
Doc ID 018695 Rev 1
5/5
Similar pages