Power

Compact metal power inductors feature profile of just 1.0mm

3rd December 2013
Staff Reporter

The new VLS-HBX series of compact metal power inductors has been announced by TDK. Featuring a high current capability and profile of just 1.0mm, the two new types have footprints of 2.0 mm x 1.6 mm and 2.5 mm x 2.0 mm respectively. Due to the use of a magnetic metal core material with a high saturation flux density, the power inductors offer rated currents of up to 6.0 A DC, depending on type.

The current capability of he VLS-HBX series is thus up to 80 percent higher than that of existing products whose cores are based on ferrite materials. TDK was also able to achieve DC resistance values that are 40 percent lower than those of current products through the use of advanced core forming technology and optimized structural design. Designed for use in the power supply circuitry of smartphones, tablet PCs, and other mobile devices, mass production of the VLS-HBX series began in November 2013.

The use of the newly developed TDK inductors will help to increase power supply efficiency and extend battery life in mobile devices. This fulfills the growing demand from the mobile phone maket for power supply circuitry requiring inductors that are rated for high currents, yet offer a small footprint and low profile.

The new VLS-HBX series joins the existing VLS-E series, resulting in a highly versatile lineup of power inductors for power supply applications in mobile devices.

Main features and benefits
  • Current capability increased by 80 percent through the use of a magnetic metal core material with a high saturation flux density
  • DC resistance decreased by 40 percent through the use of advanced core forming technology and optimized structural design
Key data
TypeDimensions
[mm]
Inductance
[μH] *
DC resistance
[mΩ] max.
Rated current [A] max.
I DC 1I DC 2
VLS201610-HBX 2.0 x 1.6 x 1.0 0.24 to 2.2 30 to 170 1.7 to 4.5 1.45 to 3.74
VLS252010-HBX 2.5 x 2.0 x 1.0 0.24 to 2.2 29 to 120 2.3 to 6.0 1.76 to 3.91

* at 1 MHz
I DC 1: Current at which initial inductance drops by 30 percent
I DC 2: Current at which coil temperature rises by 40 K due to self-heating

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