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.

Further reading:

3,75 GHz RF inductor
RF Design Passive Components
The ceramic chip wire wound inductor from Coilcraft features a DC resistance of 1 O, a DC current of 175 mA, and a self-resonant frequency of 3,75 GHz.

Read more...

---

Upgraded power inductor series
iCorp Technologies Passive Components
Sunlord’s multiphase co-fired power inductor HTF-MP series has upgraded the single-phase HTF-H products in terms of integrated applications.

Read more...

---

Advanced high-voltage capacitors
RS South Africa Passive Components
These new capacitor families from Panasonic are designed for surface-mount and radial lead applications, offering remarkable performance improvements that meet the evolving needs of industrial applications.

Read more...

---

Chip capacitors for high-voltage applications
RS South Africa Passive Components
TDK Corporation has expanded its line of CeraLink capacitor series B58043 in the EIA 2220 footprint by adding two new 900 V types.

Read more...

---

Moulded inductors
Future Electronics Passive Components
Abracon’s mini-moulded inductors bring all the advantages of their larger counterparts, including superior EMI shielding, high power density, and low core losses, despite their compact size.

Read more...

---

New components from KEMET available from TME
Passive Components
Available from KEMET, one of the largest suppliers of passive components, these new components consist of toroidal inductors (ferrites) and capacitors which boast high current performance.

Read more...

---

Miniature reed relay with 80 W rating
Passive Components
Pickering Electronics has introduced its latest high-power reed relay, Series 44, featuring an 80 W power rating, while stacking on a compact 0,25-inch pitch.

Read more...

---

The future of on-board charging
Future Electronics Passive Components
Engineered to elevate charging performance, the selection of Vishay capacitors, resistors, and other passives redefine reliability and efficiency in on-board charging technology.

Read more...

---

Cooling on a chip
Passive Components
This all-silicon, solid-state active cooling chip by xMEMS is designed for thermal management applications for ultra-mobile devices and next-gen AI solutions.

Read more...

---

First 100 µF MLCC in 0603 packaging
RS South Africa Passive Components
Murata is expanding its range of multilayer ceramic capacitors (MLCC) with the groundbreaking new GRM188C80E107M and GRM188R60E107M.

Read more...

---