(13) Other applications that are not considered general-purpose
applications
When designing your equipment even for general-purpose applications, you are kindly requested to take into consideration securing
protection circuit/device or providing backup circuits in your equipment.
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Switching Power Supply Transformers
ECO Series
Conformity to RoHS Directive
Halogen-free
Compatible with lead-free solders
Overview of the ECO Series
Development Concept
The ECO series is compliant with worldwide safety standards∗. It is a pin-compatible, newly developed transformer that can be downsized and thinned.
∗
Applicable as of April 2007: UL/IEC/J 60065 Ver.7 (TV, DVD, STB), UL/IEC/60950 Ver.3 (printer), UL/IEC 60335-1 Ver.4 (home appliance)
■
MATERIAL
Optimum materials and core shape have been developed. No insulation-supporting material is used, and this secures the insulating distance.
While optimizing materials, TDK has further improved its proprietary core shape to develop a new-type ECO core.
TDK has downsized the product considerably in order to securing the necessary creepage distance.
■
MANUFACTURING METHOD
Since the ECO Series supports automatic winding, the product is of a high quality and can be manufactured stably.
It is designed to support automatic winding, which enables a remarkable reduction in the loss generated to achieve a proficient in
manual winding until stable production.
In addition the characteristic variations of the winding wire and creepage tape have largely been removed stabilizing the transformer's characteristics
addition,
removed,
characteristics.
■
OPTIMIZATION DESIGN
Using design tools developed with TDK's comprehensive know-how, high-precision design has been achieved in a short period of time.
1) For optimization design and high-quality stable production, customers can use a specification request form.
If you provide the necessary information in the form, you will receive the optimization design in a short time.
2) We have prepared an individual specifications request document for the home appliance market.
3) TDK recommends design with a standard core gap (AL-value) for optimization and shorter trial and mass production lead time.
4) Plans for standard winding connection (patterns of recommended pin arrangement and winding structure) are available.
These help to speed up the design process, support automatic winding, and prevent deterioration in quality.
■
ENVIRONMENT
The ECO series is RoHS directive-compliant and halogen-free product.
· Ferrite cores, bobbins, cases, etc. are not sold individually.
· Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based
flame retardants, PBB and PBDE, have not been used, except for exempted ópìr.
· All specifications are subject to change without notice.
f
Please read the precautions before using this catalog.
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Replacement Parts List
We have made a new lineup of replacement parts for products with different shapes that meet our customers’ needs for smaller products.
catalog,
us.
We can also provide different transformer shapes not shown in the catalog so feel free to contact us
■
REPLACEMENT PARTS LIST
General-purpose
shaped core
Existing
*1
EGG
Bobbin
*2
type
Maximum external
size DxWxH
(mm)max.
Reference
output
*3
power (W)
Switching
frequency
fsw(kHz)
Bobbin terminal
Cross-sectional
center leg area Ae Pin pitch Lead
2
space F
(mm )
(mm)
(mm)
New ECO
*1
Number
of pins
Vertical type
EI22
EE25/19
EGG2017
EGG2420
ECO2017
ECO2020
ECO2023
ECO2219
EGG2420
EED2820
EER28
ECO2225
EGG2425
VI
VI
VI
VI
VII
VIII
VI
VII
VIII
ECO2230
ECO2420
ECO2425
EGG2430
ECO2430
Under
development
*4
Under
development
*4
p
Under
development
*4
19.5x22.5x24.0
19.5x22.5x27.0
19.5x22.5x30.0
23.0x28.5x25.0
23.0x24.0x25.0
23.0x30.0x25.0
23.0x28.5x31.0
23.0x24.0x31.0
23.0x30.0x31.0
23.0x28.5x36.0
23.0x24.0x36.0
24.0x28.5x26.5
25 0 31 5 26 5
25.0x31.5x26.5
24.0x28.5x31.5
25.0x35.5x31.5
24.0x28.5x36.5
25.0x35.5x36.5
12
20
26
5.0
25
50
46.4
4.0
3.75
5.0
36
50
46.4
4.0
3.75
48
35
50
68
50
50
50
50
46.4
63.8
63.8
63.8
5.0
4.0
5.0
40
4.0
5.0
4.0
5.0
4.0
17.5
17.5
17.5
17.5
17.5
17.5
17.5
17.5
17.5
20 0
20.0
17.5
20.0
17.5
20.0
12
12
14
12
12
14
12
12
12
14
12
16
12
16
50
36.3
3.75
15.0
12
VI
VII
VI
VII
VI
VII
VI
VII
VI
VII
VI
VII
VI
VII
HI
HI
HI
HI
HII
HI
HII
HI
HII
HI
HII
HI
HII
HI
EGG2425
EER28L
EER32
EGG2625
EER35
Horizontal type
EGG2833
ECO2017
EE25/19
NEW
ECO2020
ECO2023
ECO2219
EER2820
NEW
ECO2225
ECO2230
EER28
EGG2425
ECO2425
EER28L
EER35
*1
*2
*3
24.5x23.5x20.0
27.0x23.5x20.0
29.5x23.5x20.0
25.0x29.0x24.0
25.0x26.0x24.0
30.5x29.0x24.0
30.5x26.0x24.0
35.5x29.0x24.0
35.5x26.0x24.0
30.5x30.0x25.0
30.5x27.0x25.0
36.0x30.0x25.0
36.0x27.0x25.0
5
14
20
18
30
42
41
59
50
50
50
50
50
46.4
46.4
46.4
63.8
63.8
50
36.3
3.75
3.75
3.75
5.0
4.0
5.0
4.0
5.0
4.0
5.0
4.0
5.0
4.0
20.0
22.5
25.0
20.0
20.0
25.0
25.0
30.0
30.0
25.0
25.0
30.0
30.0
12
12
12
12
12
12
12
12
12
12
12
12
12
EGG2430
EGG2833
ECO2430
Under
development
*4
Ferrite cores, bobbin are not sold separately.
The bobbin is made from phenol with a flame resistance grade of 94V-2 or higher.
The reference output was obtained under conditions where the frequency was 50kHz and creepage distance was 4mm. (See the relevant page for details of each
shape.) The reference output differs depending on the switching device, switching frequency, transformer temperature, conditions, etc. Use this output for reference.
*4
Scheduled to be supported from April 2010 onwards (prior to that date, it is supported by the EGG type)
· All specifications are subject to change without notice.
f
Please read the precautions before using this catalog.
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Lineup of ECO Series
40.0
35.0
ECO
2230
ECO
2430
Height from substrate(mm)
30.0
ECO
2023
ECO
2020
ECO
2225
ECO
2425
25.0
ECO
ECO
ECO
2219
ECO
2017
2219
2225
ECO
2420
ECO
2425
ECO
2230
ECO
2430
20.0
ECO
2017
ECO ECO
2020 2023
15.0
0.0
20.0
40.0
60.0
Handling power(W)
80.0
100.0
Vertical type
Horizontal type
· All specifications are subject to change without notice.
f
Please read the precautions before using this catalog.
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