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itacoil transformers
Switching transformers  
LLC Resonant transformers  
SRL Resonant transf. with PFC
SRL Resonant transf. without PFC
Power ferrite transformers for SMPS, DC/DC converters, inverters flyback resonant etc.
Measurement transformers
HF Current transformers
SHL AC-DC current sensor
Pulse transformers
Drive transformers for IGBT, MOSFET, Triac...
Ignition transformers
Ignition transformers
Signal transformer
Signal transformers for intrinsic safety equipments (Ex) too
SML Signal transformers
NEW PRODUCTS  
new products, transformers, inductors, coils
 
For the detailed features please see the catalogue
What are resonant switching power supplies "LLC Series"??
trasformatore risonante
The resonant switching topology is to date, one of the most efficient solutions
for switch mode power supply design.



 
The need for high performance power supply systems for LED lighting and, in general, the increasingly greater request for energy efficiency, both regarding running costs and compliance with recent Standards, has brought about a revaluation of the LLC resonant topology.
In fact all the major manufacturers of active components for the SMPS market have added chips which have effectively contained the supporting circuitry needed to achieve a relatively complex but highly efficient SMPS PSU design whilst offering low EMI/EMC emissions.
   
  ADVANTAGES
 
- Typical range of efficiency for the simplest circuitry 94 - 96%, with the possibility of improvements through synchronous rectification and other small adjustments;
- Utilising correctly sized magnetic components, the design is rapid and notably simplified;
- The current waveform at high frequencies it basically sinusoidal with significant reductions in harmonics with respect to other topologies;
- MOSFET commutation ON "ZVS" (Zero Voltage Switching) with dramatical reduction of its power loss, reduction / elimination of dissipators and reduction of stress and disturbances which are often the causes of the most hostile design problems.
- The possibility to reduce consumption with low/zero load by utilizing the functions "burst mode" and "PFC stop" implemented on many controllers.
- The possibility of optimal sizing for continuous and temporary power including some significant improvements on conventional solutions( eg. One of our transformers having volume similar a classic EF25 can temporarily reach up to 500-1000Wpk).
With respect to other topologies, with the attributes described above, LLC supplies have reduced dimensions with a notable reduction in EMI/EMC issues.
   
  CRITICAL POINTS
 
- One necessary factor to be considered for the optimised design of power supplies is the magnetics, the ommission of which means to renounce a significant potential in improved efficiency;
- The selection of the optimised onboard transformer requires specific competence;
- Two MOSFETs are required (half bridge) rather than the single MOSFET for the Flyback;
- The controller is slightly less economic than the flyback; usually it become a global saving thanks to the minimal spendings on dissipators, EMC filters, the use of more compact transformers etc.
   
  These comparative tests are interesting examples of how it's possible to increase the efficiency thanks to an optimised integrated transformer.
  demo board and comparative tests
   
  OUR CAPABILITIES
 
We are able to supply standard transformers with correctly tuned resonant tanks and we collaborate with electronics designers when defining custom resonance tanks to resolve every specific need.
We have made significant investment enabling us to provide a rapid and technically competent support.
With the aid and experience of internally developed proprietary software, we have the ability to offer design solutions which, amongst other factors, take into account skin effect,proximity effect and structural limitations.
   
 
Don't waste your resources:
Even an optimum design of power units and elevated quality components can leave you with deluding results due to poorly optimised matching of your magnetic components.
The collaboration between our company and your electronic engineers at the design phase offers reduced development times without renouncing the best results in terms of efficiency, temperature, costs and footprint.
   
  THE INTEGRATED TRANSFORMERS
 
This definition refers to a transformer which integrates its internal resonant inductance utilising the calibrated leaked inductance. (See our technical artical published in various sector magazines in Italy and abroad).
Our standard transformer series covers all the most popular power and voltage needs, see either our catalogue or the link to standard resonants. To date is is still relatively common to find convertors which for design simplicity make use of discrete inductors in addition to conventional transformers, however their use is totally inefficient in every aspect, economically, and in terms of energy consumption and utilisation of space.
We have the capability to rapidly design and provide samples of custom integrated transformers for specific needs.
   
   
  All our integrated transformers can be utilised irresepectively with any controller present in todays markets, some of which we refer here:

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
UCD3138
UCC29950
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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ITACOIL transformers - 7 , via delle Gerole - I-20867 CAPONAGO (MI) - ITALY
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