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Automotive electronics is divided into six major categories: power system, lighting system, body control, intelligent driving, in vehicle electrical appliances, and high-voltage three electricity. Inductance mainly focuses on energy storage, voltage transformation, current limiting, and LC filtering; Magnetic beads are mainly used for high-frequency EMI noise reduction, and the two are often used in combination. Inductors and magnetic beads are currently in a golden period of high prosperity, high growth, and accelerated domestic substitution in automotive electronics: driven by electrification, intelligence, and high voltage, with both usage and value increasing.
Mandatory requirements for medical selection (different from ordinary consumer electronics) Inductance: fully shielded magnetic circuit, low temperature drift, moisture and heat resistance (85 ℃/85% RH aging parameter change<3%), insulation resistant to medical disinfection environment; Magnetic beads: low DCR, low heat generation, 1.5 times the rated current margin reserved, 100MHz impedance commonly used 300~600 Ω, medical specific low leakage magnetic material; Overall, it meets the GB9706.1 and YY0505 medical electrical EMC standards, and some exported products require UL medical certification.
Inductors and magnetic beads are applied in industrial control motherboards (commonly used for industrial control PLCs, servo drives, IO boards, and frequency converters)
In the field of network communication, magnetic components are mainly used in products such as network switches, servers, communication power supplies, 5G base stations, and terminal communication equipment. Inductance is mainly used in communication equipment applications for energy storage, filtering, isolation, and impedance matching, improving signal transmission quality and efficiency.
Application of Inductors and Magnetic Beads in Switching Power Supply (Universal for Power Adapter, Module Power Supply, Industrial Control Switching Power Supply)
Inductors are not "replaceable supporting role" in LED lighting, but the core just needed components of DOB/driving power supply. In the next five years, the overall steady growth and structural upgrading are obvious: small volume, high frequency, low loss, and intelligence are the orientation, and domestic substitution opportunities are large. In Buck/Buck Boost/DOB with PFC, inductance is the "energy heart"
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