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Electronics Manufacturing & Production Handbook 2019


 

Wire-wound inductors employ innovative design
2 April 2008, Passive Components

Taiyo Yuden has released its NR6045T series of 6 x 6 x 4,5 mm height wire-wound power inductors for DC-DC converter choke coil applications in LCD/plasma TVs and other flat panel displays (FPDs). The 14 models in the series offer an excellent selection of low DC resistance (0,014–0,5 Ω), high inductance (1,0–100 μH) and high current ratings (0,8–8,5 A).

Due to the aggressive price/performance quest of the expanding global FPD market, greatly increased numbers of IC chips are now required for their I/O, image processing and information processing circuits. Power supply circuits are likewise increasingly used for each IC chip to more efficiently use power and lower overall consumption as much as possible. These circuits, however, require costly multilayer boards that have grown in size due to the increase in the number of power supply circuits, a factor that has also driven up FPD prices. This has resulted in a corresponding demand for choke coils – the main component in DC-DC converters – with higher current capacity, lower DC resistance and smaller physical size. Boosting current capability, however, requires increasing the size of the core and thickening the windings inside the inductor, both of which make reducing the device’s size very difficult.

Taiyo Yuden has responded to this design challenge by improving the round drum/sleeve core technology used by conventional inductor designs. A unique sleeveless, square-core winding was developed for use by the NR series inductors that successfully eliminates all wasted space and thickens the lead wire inside the inductor to achieve the lowest possible DC resistance.


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Further reading:

  • Consumer grade power inductors
    26 June 2019, Electrocomp, Passive Components
    Bourns is introducing the Model SRP7028C, SRP1038C and SRP1770C high-current shielded power inductor series, designed to meet today’s high current density requirements in various types of consumer electronics ...
  • High-current shielded power inductors
    26 June 2019, Electrocomp, Passive Components
    The inductive components product line at Bourns has created the Model SRP5050FA and Model SRP7030CA high-current shielded power inductor series, designed to meet today’s high current density requirements ...
  • Automotive qualified chip resistors
    29 May 2019, Electrocomp, Passive Components
    Bourns announced the introduction of its new sulphur-resistant, AEC-Q200 compliant thick film chip resistor series. The new Model CRxxxxA-AS series is available in eight different footprints from small ...
  • Inductor learning kit
    30 April 2019, Würth Elektronik eiSos, Passive Components
    Co-developed by Würth Elektronik eiSos and Texas Instruments, the TI-PMLK Buck Würth Elektronik Edition is a learning kit to autonomously study the impact of magnetics in a power supply using a buck board ...
  • Rugged AC filter capacitors
    30 April 2019, Electrocomp, Passive Components
    TDK has introduced a new series of AC filter capacitors that are UL 810 approved at the component level and carry the CE mark. The capacitors of the B32354S3* series are designed for a rated voltage of ...
  • High-voltage double chokes
    27 March 2019, Würth Elektronik eiSos, Passive Components
    With its WE-TDC HV, Würth Elektronik eiSos has introduced a further double choke optimised for SMT assembly. The magnetically shielded 1:1 transformer, with an isolation voltage of 2 000 V, boasts very ...
  • Moulded power inductors
    27 March 2019, RF Design, Passive Components
    Coilcraft introduced its new XGL4020 series of high-performance moulded power inductors at this year’s Applied Power Electronics Conference (APEC) in California, USA. They feature very low DC and AC losses ...
  • RM6 and RM10 transformers
    27 March 2019, Würth Elektronik eiSos, Passive Components
    The new MID-OLRM extended rail RM6 and RM10 transformer series for offline applications is now available from Würth Elektronik. For the past 30 years, the RM packages have required flying leads to meet ...
  • G.fast transformers
    27 March 2019, Würth Elektronik eiSos, Passive Components
    Würth Elektronik announced the release of additional G.fast transformers to the MID-DSLSCK family approved for use with Sckipio chipsets. These transformers cover both the 106 MHz and 212 MHz G.fast profiles ...
  • High-power thick-film resistors
    27 February 2019, Electrocomp, Passive Components
    Bourns announced the introduction of the new Model PWR221T-50 series high-power thick-film resistors. This series is available in a compact TO-220 package utilising thick-film on ceramic technology, ...
  • LAN transformers and common mode inductor
    27 February 2019, Electrocomp, Passive Components
    Bourns’ inductive components product line is introducing the Model SM453229-231N7Y and SM453229-381N7Y chip LAN 10/100/1000 Base-T transformers. Unlike traditional LAN magnetics built with multiple toroidal ...
  • 120 W planar transformers
    30 January 2019, RF Design, Passive Components
    Coilcraft has introduced its new PoE120PL series of high-efficiency planar transformers which are optimised for active clamp forward converters, including use in Power over Ethernet PSE (power sourcing ...

 
 
         
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