News Releases

Feb.07, 2012

Compact size, large current capacity, and low loss with the lowest DC resistance value in the industry (*1) Announcing the release of the “Power choke coil” Suitable for the DC/DC converter circuits used in smart phones, tablet peripherals, HDDs etc.

(*1) Our investigation of choke coils with the metal-composite core structure as of February 7, 2012

February 7, 2012 Osaka, Japan–Industrial Devices Company, Panasonic Corporation has succeeded in commercializing the “Power choke coil” featuring compact size, large current, and low loss with the lowest DC resistance value in the industry (*1). Newly developed power choke coils are suitable for DC/DC converter circuits used in smart phones, tablet PC, HDDs etc.

New Product

Product name	Power choke coil
Series name	PCC-M0512W series
Production start	February 2012 (Inductance value: 0.47, 3.3, 4.7 µH) April 2012, (Inductance value: 1.0, 2.2 µH)
Sample price	50 Yen/piece
Production capacity	2 million pieces/month

As smart phones and HDDs used in tablet PC, game machines have become larger memory as well as faster, power supplies to be used have been required to have larger capacity and faster transient-response when starting up from standby mode. To meet for these requests, the power supply circuits has been becoming faster switching frequency and larger current. Besides, with the increasing multi-layer of HDD-disks, power supply circuits have been required to be thinner. Accordingly, choke coils to be used in DC/DC converter circuits have been required to be thinner, smaller, as well as larger current, and lower loss. To meet the market demand, Industrial Devices Company, Panasonic Corporation has developed power choke coils featuring smallest, largest current, lowest loss with the lowest DC resistance in the industry, and will commence mass-production.

Features

1. One body-structure using our original round-wire coils, thin terminals, metal-composite core, realizing the lowest profile and DC resistance value in the industry

Dimensions : L 5.4 mm × W 5.15 mm × H 1.2 mm max. Our current models (*2) : H 1.85 mm max.

DC resistance value : 80 mΩ(with 3.3 µH ) ... Top level in the industry (*1)
Approx. from 10 to 20 % reduction compared with our current models (*3)

2. Our original metal-composite core structure, realizing large current and high frequency

Current value : 2.8 A (with 3.3 µH) Our current models (*2) : 1.9 A

High frequency loss : 400 mΩ at 1MHz (with 3.33.3 µH) Our current models (*2) : 650 mΩ

• (*2) Compared with our current models (ELL5PS series with the same inductance value)
• (*3) Compared with our current models (ELL5PS series with the same size and same inductance value)

Applications

• Smart phones
• HDDs used in tablet PC, game machines
• DC/DC converter circuits used in electronic magazines, game machines etc.