New benchmark for high frequency and low loss! TDK launches 1GHz automotive grade anti-interference inductor solution
2025-08-11
TDK has recently launched the ADL4524VL series of car mounted PoC winding inductors, which achieve breakthrough high impedance characteristics of 10MHz-1GHz ultra wideband and military grade temperature tolerance of -55 ℃~155 ℃. The 4.5 × 2.4 × 2.6mm ultra-thin package replaces the traditional three inductance scheme with a single device, saving 40% of PCB area for ADAS camera systems and helping smart cars achieve lightweight wiring and energy efficiency upgrades.
Technical difficulties and solutions
Industry pain points
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Innovative Technology Path
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High frequency signal interference in power transmission
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Non sensory solution
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High temperature in the engine compartment causes saturation of the magnetic core
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Broadband flux gate technology achieves 1GHz impedance isolation of nanocrystalline alloy materials to maintain inductance stability at 155 ℃
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Insufficient space for multi inductor layout
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Three in one integrated design reduces footprint by 70%
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Vehicle vibration causes solder joint failure
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Laser welded terminals pass 20G vibration test
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central role
Solve the electromagnetic compatibility problem of power/signal simultaneous interpreting in ADAS multi camera system:
Block the interference of GHz level video signals on power supply (such as LVDS differential signals)
Eliminate image stripes caused by motor brush noise (PSRR> 60dB@100MHz ）
Prevent camera power failure accidents caused by inductance attenuation in high temperature environments
Key competitiveness
The industry's widest frequency response at 1GHz (competitors generally ≤ 500MHz)
Maximum operating temperature of 155 ℃ (55% higher than the temperature resistance of consumer grade inductors)
0.6 Ω ultra-low DC resistance (10 μ H model, reducing power loss by 50%)
AEC-Q200 vehicle specification certification (meets ISO 16750 vibration standard)
Actual application scenarios
ADAS Multi Vision System: Tesla HW4.0 Platform 8 Camera PoC Powered Filter
Electronic rearview mirror: replaces traditional wiring harness, reduces weight by 300g per vehicle
● Cabin driver monitoring: 155 ℃ temperature resistance guarantee, instrument panel high temperature stability
● Vehicle Ethernet switch: 1GHz bandwidth supports 100BASE-T1 signal isolation
Product supply situation
● Mass production progress: Starting from July 2025, the entire series will be mass-produced (including 10 μ H/18 μ H dual models)
● Channel support: In stock supply on platforms such as DigiKey/Maoze, with samples delivered within 72 hours
Customized services:
Impedance characteristic optimization (for 77GHz radar frequency band)
Copper alloy terminal reinforcement scheme (salt spray resistance>96h)
Conclusion
Faced with the demand for centralized evolution of intelligent automotive electronic architecture, TDK ADL4524VL series redefines the benchmark of PoC inductor technology with 1GHz bandwidth and three in one integration. Its 155 ℃ extreme temperature tolerance capability has become the cornerstone of the reliability of L3+auto drive system. The power assisted vehicle enterprise has achieved a double breakthrough of 40% weight reduction of the harness and 25% volume reduction of the camera module.
Karmin Electronic (HK) Limited 
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