News
Ultra-small car POC interface with broadband inductor
- Author:Murata
- Release on:2021-05-06
Corporate Murata Making Center (hereinafter referred to as the company) will be super small 2012 size (2.0 × 1.2mm) car POC(1)The interface is commercialized with a broadband inductor "LQW21FT series" (hereinafter referred to as this product), and it has been mass production in May 2021.
- (1)POC (Power Over COAX): combining the signal line with the power cord into a coaxial cable.
In recent years, with the popularity of the automatic driving of the advanced driving assistance system (ADAS), etc., in order to monitor the surrounding circumstances, multiple HD car cameras will be equipped. So use multiple cables, so that the demand of the PoC circuit of the power supply and the power supply can be used simultaneously with a cable. In addition to processing broadband signals through the circuit processing site, the POC circuit is separated from the power supply and the power supply, so it is necessary to maintain a high impedance on the wide frequency band, thereby usually using multiple inductors.
This product uses the company's unique ceramic material and coil structure to achieve broadband and high impedance in a super-small 2012 size (2.0 × 1.2 mm), thereby reducing the number of inductors and the installation area. Thereby, miniaturization of the car camera module, which contributes to the small light quantization of the electricity.
The company will also actively develop products that adapt to market demand and contribute to the high performance and high functionalization of the automobile.
main feature
- Ultra-small 2012 size (2.0 × 1.2mm) car PoC inductor for Serdes interface(2)
- Products with various inductance values (0.47 ~ 2.0μH)
- With usual through inductor(3)Composite constitutes a combination of LQW21FT (this product) and LQW32FT (existing products of the company) to reduce 50% circuit area
- (2)Serializer: The circuit that mutually converts the parallel signal / serial signal in order to high speed data transmission.
- (3)Usually the filter circuit constitutes the universal inductor used.
Main technical specifications
Product details, please seeLQW21FT_0H series.
| model | Inductance value | Rated current (MA) | ||
|---|---|---|---|---|
| Nominal value (μH) | Inductance value change rate | Temperature increase | ||
| Ambient temperature 105 ° C | Ambient temperature 125 ° C | |||
| LQW21FTR47M0H | 0.47 | 1000 | 1100 | 900 |
| LQW21FTR82M0H | 0.82 | 800 | 800 | 700 |
| LQW21FT1R0M0H | 1.0 | 700 | 700 | 600 |
| LQW21FT1R5M0H | 1.5 | 550 | 550 | 500 |
| LQW21FT2R0M0H | 2.0 | 450 | 450 | 400 |