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HF Resonant Transformers |
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SRL series
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Features
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Designed for best performances on high efficiency LLC resonant power supply |
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Suited for converters based on chip L6599-L6598-L6585 (ST Microelectronics), FAN7621-FSFR1600-FSFR1700-FSFR1800-FSFR1900-FSFR2000-FSFR2100 (Fairchild), UCC25600 (Texas Instruments), MC33067-MC34067-NCP1395x-NCP1396x (ON Semic.), TEA1610x-TEA1611T-TEA1613T-TEA1713T (NXP), PLC810PG (Power Integration), and many others |
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Integrated resonant inductor by winding disposal |
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Operating frequency 40KHz to 300KHz, higher frequency on request |
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High creepage/clearance/DTI for reinforced insulation |
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RoHS compliant |
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Resonant power supply - see technical news |
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The design of a LLC resonant power supply with high efficiency target (both energetic and economic) should consider the constraints related to the physical parameters of the transformer which is supposed to use.
We are able to provide a quick and efficient support, working with electronic designers, in defining the "resonant tank" parameters in order to minimize the losses (including MOSFET's conduction losses) to obtain the best efficiency in each of our formats.
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For a consistent design of the resonant converter and its magnetic components we recommend to send us the necessary information using the following form: |
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"Resonant Tank request form" |
EXCEL form |
PDF form |
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For applications where the supply characteristics are not changeable, please use the following form (*): |
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"Resonant Transformers request form" (*) |
EXCEL form |
PDF form |
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(*) This solution do not guarantee the best results. |
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To request a quote or a sample, please send completed form to contatto@itacoilmail.it or, by FAX, to +39.02.95745133 |
| Size |
Dimensions (mm) |
Basic Characteristics |
Packing Qty |
| A |
B |
H |
X |
Y |
D |
dielectric strenght (1) |
creepage & clearance (1) |
Max power |
| SRLETD34... |
35.5 |
36.6 |
25.2 |
5.5 |
28 |
0.8 |
4.0KV |
5...7mm |
200W |
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| SRLETD39... |
42.5 |
43.5 |
30 |
5.8 |
36 |
0.8 |
5.0KV |
>10mm |
300W |
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| SRLETD49... |
50.6 |
50.7 |
38.2 |
7.0 |
41.6 |
1.0 |
5.0KV |
>12mm |
800W |
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(1) Between primary+aux to secondary. Actual needing should be specified about each item.
(2) Approximative max output power for reference only, it is affected by operating frequency and some other detail.
| SRLETD34... |
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SUGGESTED LAYOUT |
SRLETD39... - SRLETD49... |
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SUGGESTED LAYOUT |
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Auxiliary winding is optional.
Pin 1 missing for reference.
Center tap secondary allow rectifier power loss reduction but increase secondary power loss, it is suggested with very low output voltage only.
Download and send us the “resonant transformer request form”, we will support you in designing an optimized transformer taking into account every detail included skin effect, proximity effects, wire paths for best reliability, costs and so on.
These transformers are useful with every chip for resonant converters, these are some of the most common:
| ST Microelectronics |
Fairchild |
NXP - Philips |
Texas Instruments |
Power integration |
ON Semiconductor - Motorola |
L6598
L6599
L6585 |
FSFR1700
FSFR1800
FSFR1900
FSFR2000
FSFR2100 |
TEA1610
TEA1611
TEA1612
TEA1713 |
UCC25600
UC2861
UC2863
UC2864
UC2865
UC2866
UC2876 |
HyperPLC PLC810PG |
NCP1395
NCP1396
NCP1397 |
| ALL PRIMARY REFERRED TRANSFORMER MODEL |
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