MPHM160809 Series Power Inductor Designed for Smart Wear: Low DCR and Large Current

PublishTime： 2023-08-16 Article Source：Sunlord News

In 2022, TWS headphone shipments have reached 287.7 million units, accounting for 68% of total personal audio shipments, TWS headphones have a huge demand for electronic components. In TWS headsets, in order to achieve a high-quality user experience of ‘on-call’, many functions are mostly in standby state when it is not used, and the standby state will continue to consume battery life, which shows that battery life is an important parameter for TWS headsets. In order to improve standby efficiency, a switching DC/DC power IC is required for power conversion and the switching DC/DC power conversion IC needs to be equipped with a Power Inductor as an energy storage device. Therefore, according to the functional application of different products and the integration level of different main platforms, 2-4 pcs power inductors are required in a single earphone. Given the structure of TWS, the power inductor needs to be small in size and 1.1A of rated current and requires low inductor losses to achieve high conversion efficiency and strong endurance. The new MPHM series launched by SUNLORD this time can not only meet the power inductor requirements of TWS headphones in terms of electrical properties but also have strong price competitiveness with its unique production process.

MPHM160809 series is a new product that was developed on Sunlord's mature multilayer platform, the new MPHM series has the following features:

1. For high-density mounted circuits, MPHM series products show excellent anti-interference/anti-coupling and low magnetic flux Leakage performance;

2. The product exterior is designed with a mark, marking the direction of magnetic flux, which can ensure that the direction of the magnetic field is consistent after the mounting;

3. Excellent electrical properties such as high reliability, low DCR;

4. Meet the mainstream power requirements, providing customers with cost-effective products by adopting the multilayer technology platform;

Features

●Low DCR, large current

●Mark identifies the direction of flux

●Full magnetic shielding

●Low magnetic flux leakage

●Monolithic structure

Applications

●TWS headphone

●Smart watches, electronic tags

●Smartphone

●Power supply module

●Monolithic structure

Shape and Dimensions

Fig.1

Product Identification

Fig.2

Main Specifications and Electrical Characteristics

Table.1

※□: Please specify the inductance tolerance code (M=±20%, N=±30%);

※Rated current: Isat or Irms, whichever is smaller;

※Isat: DC current at which the inductance drops approximately 30% from its value without current;

※Irms: DC current that causes the temperature rise (△T =40°C) from 20°C ambient.

MPHM160809 Series

Inductance vs. Frequency Characteristics

Fig.3

Inductance vs. DC Current Characteristics

Fig.4

Inductance vs. Frequency Characteristics

Fig.4

Inductance vs. DC Current Characteristics

Fig.5

Application Cases

The application of MPHM in TWS

Fig.6 Headphone application block diagram

Recommended models are as follows

Table.2

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Integrated Circuits