Sumida Introduces Pulse Transformers for Advanced Battery Management Systems

­Sumida Corporation, a global leader in inductive components, announces the launch the start of a new series of automotive-grade, low-profile surface-mounttransformers designed specifically for use in Battery Management Systems (BMS) in electric vehicles (EVs), industrial battery storage, and portable power applications. The new pulse transformers are the CIUH7D46 and CIUH10D47.

Battery management systems play a critical role in ensuring the safety, efficiency, and longevity of high-voltage Li-Ion battery packs. The CIUH Series provides robust galvanic isolation and EMI suppression, both essential for the integrity of serial communication lines within daisy-chained BMS architectures.

Key Features:

·       Low-profile (5mm) SMD packageideal for compact, high-density BMS designs

·       High isolation rating: 3,800 V DC (60 seconds), meeting the demands of high-voltage environments

·       AEC-Q200 qualifiedfor automotive reliability and performance

·       Flexible coil configuration: CIUH10D47 features dual primary/secondary windings for multiple topology options

·       Excellent coplanarity(≦0.1mm) and robust metal terminal construction for high mechanical reliability

·       Wide operating temperature: -40°C to +125°C

“With battery safety and system reliability at the forefront of electrified applications, the CIUH Series delivers both the electrical performance and mechanical robustness BMS engineers require,” said Carl G. LeJambre III, Vice President of Sales. “These components support next-gen EV platforms and are equally suited for marine, aviation, and industrial power systems.”

Electrical Performance Highlights:

·       Working voltageup to 1,000V (CIUH10D47) (600V CIUH10D46)

·       Low interwinding capacitance(as low as 1.46pF) to reduce noise coupling

·       Low DCR: as low as 0.38Ω for improved efficiency

·       Inductanceranges from 45μH to 593μH across variants

·       RoHS compliant

Application Versatility:

·       Automotive BMS for EVs, HEVs, and PHEVs

·       Industrial energy storage and UPS systems

·       Portable and off-grid power solutions

Additionally, the CIUH7D46 is validated for use with Analog Devices' isoSPI transceivers (ADBM56821 and ADBM56822), making it an ideal choice for developers using ADI’s BMS evaluation platforms. It is also compatible with other isoSPI transceiver chips.

For more information, go here.