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itacoil transformers
Switching transformers  
Power ferrite transformers for SMPS, DC/DC converters, inverters flyback resonant etc.
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SRL Resonant transf. with PFC
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new products, transformers, inductors, coils
 
For the detailed features please see the catalogue
Integrated Resonant Transformers
resonant transformer
sizes table for custom and standard products
This category contains the following standard series:
SRL series resonant transformers - with PFC stage
SRL series resonant transformers - without PFC stage
Switching power supplies, what are the LLC resonant converters?
  Resonant power supply - see technical news
  Demo-boards and comparative test - Increase the efficiency thanks to optimised magnetics

Features

Designed for best performances on high efficiency LLC resonant power supply
Suited for converters based on chips ST Microelectronics, Fairchild, Texas Instruments, ON Semiconductor Motorola, NXP Philips, Power Integrations, Infineon, International Rectifier and many others. (see some models)
Integrated resonant inductor
Operating frequency 40KHz to 300KHz, higher frequency on request
High creepage/clearance/DTI for reinforced insulation
RoHS compliant
 
The design of a LLC resonant converter 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.
Thanks to our proprietary software 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.
 
For a consistent and customized design of the resonant converter and its magnetic components, please, require the Resonant tank request form . We are also able to provide a similar service of advanced design of inductors for active PFC.
Go to inductors for active PFC - Commone mode chokes
 
  To request a quote or a sample, please send completed form to contatto@itacoilmail.it or, by FAX, to +39.02.95745133


Sizes table

Max
Continuous
Power
A B H H1 max X Y L D Layout Dielectric
Strength
Creepage
&
Clearance
Download
115W 26.4 28.9 16.1 -- 5.0 22.5 2.5 0.64 drw. 24A 5.0KV >6mm

file 3D .stp

190W 26.3 28.9 20.7 -- 5.0 22.5 2.5 0.7 drw. 26B 5.0KV >6mm

file 3D .stp

230W 47.3 56.9 10.6 13.6 6.0 69.6 2.5 0.8 drw. 31A 5.0KV >6mm

file 3D .stp

240W 36.1 36.6 25.6 -- 5.5 28.0 3.0 Ø 0.8 drw. 34A 5.0KV >6mm

file 3D .stp

300W 43.2 44.5 31.5* -- 5.8 36.0 3.0 Ø 0.8 drw. 37A 5.0KV >6mm

file 3D .stp

400W 33.6 32.8 33.4 -- 5.0 25.0 2.5 Ø 0.8 drw. 40A 5.0KV >6mm

file 3D .stp

450W 53.0 62.3 26.3 -- 5.0 52.0 3.5 Ø 1.0 drw. 50A 5.0KV >6mm

file 3D .stp

700W 53.6 56.7 38.3 -- 5.5 44.8 3.5 Ø 1.0 drw. 52A 5.0KV >6mm

file 3D .stp

* Output voltage lower than 36Vdc could increase the max height up to 2mm
Standard tanks available on this size

drawing 24A (pin layout bottom view) drawing 26B (pin layout bottom view)
Risonante


pin 10 missing for reference
Risonante



drawing 31A (pin layout bottom view) drawing 34A (pin layout bottom view)
Risonante


Risonante

pin 1 missing for reference

drawing 37A (pin layout bottom view) drawing 40A (pin layout bottom view)
Risonante

pin 1 missing for reference
Risonante

pin 1 missing for reference

drawing 50A (pin layout bottom view) drawing 52A (pin layout bottom view)
Risonante


pin 1 missing for reference
Risonante

pin 1 missing for reference

Request latest catalogue for more info


These transformers are useful with every chip for resonant converters, these are some of the most common:
ST Microelectronics Fairchild NXP Philips Texas Insruments Power Integrations ON Semiconductors International Rectifier Infineon
L6598
L6599
L6585
L6699
FAN7688
FAN7631
FAN7621
FAN7621S
FAN7621B
FSFR2100
FSFR1600US
FSFR1700US
FSFR1800US
FSFR2100US
FSFR1800HS
FSFR1700HS
FSFR1600XS
FSFR1700XS
FSFR1800XS
FSFR2100XS
FLS1600XS
FLS1700XS
FLS1800XS
FLS2100XS
TEA1610T
TEA1611T
TEA1612T
TEA1713T
TEA1716T
SSL4120T
UCC25600
UCC256301
UCC256303
UCC256304
UCC29950
UCD3138
PLC810PG
LCS700HG
LCS701HG
LCS702HG
LCS703HG
LCS705HG
LCS708HG
NCP1395x
NCP1396x
NCP1397
NCP1910
NCL30051
MC34067
MC33067
IRS27951
IRS27952
IRS279524
IRS2548D
IRS2153
IRS21531
ICE1HS01G
ICE2HS01G
ICL5101

 

 


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