Download Databrief

STEVAL-ISA121V1
Wide range single-output demonstration board
based on the VIPER37LE
Data brief
Features
■
Universal input mains range:
– input voltage 90 - 264 VAC
– frequency 45 - 65 Hz
■
Single-output voltage: 5 V @ 3 A continuous
operation
■
Standby mains consumption:
< 30 mW @ 230 VAC
■
Average efficiency: > 75%
■
Complies with EuP Lot 6 requirements
■
Fully protected against faults overload,
overvoltage, transformer saturation and
overheating
STEVAL-ISA121V1
■
Compliant with EMC norm EN55022-Class-B
■
RoHS compilant
Description
The board implements several protection features
that considerably increase end-product safety
and reliability: overload protection, overvoltage
protection, brownout protection, hysteretic
thermal protection, shorted secondary rectifier
detection, and transformer saturation protection,
all of which are in auto-restart mode.
The STEVAL-ISA121V1 demonstration board
implements a 15 W single-output wide range
mains power supply to be used as an auxiliary
adapter in applications such as LCD, plasma or
LED TVs, desktop computers, etc., when the
main power supply is OFF or in standby mode
and the auxiliary power supply must provide
energy only to some specific parts of the
equipment such as USB ports, remote receiver,
etc.
The board uses the new VIPER37LE, an offline
high voltage converter from the VIPerPlus family,
specifically designed for fixed frequency flyback
converters, which combines a high-performance
low voltage PWM controller chip and a max. 4.5 Ω
RDS(on), 800 V BV(DSS), avalanche-rugged power
MOSFET in the same package.
The application is optimized for less than 30 mW
standby consumption and meets EPA 2.0 limits,
thereby helping to meet the most stringent
energy-saving requirements.
January 2013
Doc ID 024066 Rev 1
For further information contact your local STMicroelectronics sales office.
1/6
www.st.com
6
C6
22nF – X2
2/6
3
4
2
1
Doc ID 024066 Rev 1
R11
33k
C10
10nF
R12
39k
CONT
BR
R13
47k
C11
33nF
FB
C13
2.2nF
OPTO
KB817A
GND
DRAIN
U1
VIPER37LE
R5
3.3
CONTROL
VDD
R2
3.9M
D5
BAT46RL
C7
2.2nF
OPTO3
KB817A
VR1
TS431
R6
330
C3
1200uF
R10
100k
C9
10nF
R8
12k
C4
1200uF
R14
39k
R9
120k
GND
C5
100uF
STEVAL-ISA121V1 electrical diagram
D6
18V
C12
22uF
R4
150k
D4
1N4148
D3
STTH1L06
D1
1.5KE220
5V
Figure 1.
AC IN
R7
220
JMP
C14
22nF
D7
1N4148
C1
220pF.
L1
2.2uH
Schematic diagram
AC IN
+
NTC
10
R3
2M
R1
2.2M
C2
33uF
D2
STPS30L40CT
1
F1
1.5 A FUSE
CM
2X25mH
-
BR
TF
Schematic diagram
STEVAL-ISA121V1
AM11341v1
STEVAL-ISA121V1
Output characteristics
Figure 2.
Line and load regulation
5.15
115Vac
230Vac
5.10
Output voltage [V]
5.05
5.00
4.95
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Output current [mA]
AM11343v1
Figure 3.
No load consumption
65
60
No brownout
With brownout
55
50
Input power [mW]
2
Output characteristics
45
40
35
30
25
20
15
10
50
100
150
200
Input voltage [Vac]
Doc ID 024066 Rev 1
250
300
AM11345v1
3/6
Output characteristics
Figure 4.
STEVAL-ISA121V1
Efficiency
79
78
Efficiency [%]
77
76
EPA 2.0 limit
75
115Vac
230Vac
average @115Vac
average @230Vac
74
73
72
0
2
4
6
8
10
Output power [W]
4/6
Doc ID 024066 Rev 1
12
14
16
AM11344v1
STEVAL-ISA121V1
3
Revision history
Revision history
Table 1.
Document revision history
Date
Revision
09-Jan-2013
1
Changes
Initial release.
Doc ID 024066 Rev 1
5/6
STEVAL-ISA121V1
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 TWO AUTHORIZED ST REPRESENTATIVES, 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.
© 2013 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
6/6
Doc ID 024066 Rev 1
Similar pages