With the rapid development of industry and technology,In being 4G Base station, each array uses up to four transmitters and four receivers (4x4 MIMO). In contrast, large-scale adoption is expected MIMO array 5G Base stations, each array can be used up to 64A transmitter and 64A receiver. 5G Network energy ratio 4G The data transmission rate of the network is high 100 And the network latency is as low as 1ms.

Compared with the traditional separate DC / DC IC And external inductance solutions, 5G Base station circuit board components require higher density, smaller size requirements, and need to achieve higher efficiency and lower EMI. 

The input voltage of the base station is usually 48V The voltage is DC / DC Converter step-down to 24V or12V And then further step-down to multiple power rails, ranging from 3.3V to1V Below, these power rails are used in baseband processors ASICEl ectrical supply.  

At the same time, in order to reduce the conduction and radiation caused by the switching current EMI. It is also necessary to carefully layout the components and place the filter components. DC / DC Transducers usually generate conduction through a magnetic field in a current loop EMI While the current loop is mainly formed in the output power MOSFET Between the switch node and ground, and between the input capacitor and ground. MOSFET The connection between the switch node and the inductor also generates a radiant electric field EMI Due to the need to constantly switch between the input level and the ground level, therefored V / dt Very high, and the electromagnetic field generated by the inductance itself will also produce radiation. 

The closed magnetic inductance, optimized current loop and integrated input filter of the soft saturated core of Jinlai Technology greatly simplifies the final design to ensure that radiation and conduction are metEMIAsk.

2023A year,Jinlai Technology-5G Base station inductance application will also increase the progress of new product development, keep up with the pace of intelligent technology, welcome new and old customers to inquire!