comment on this article

Mouser stocking Analog Devices’ LT8228 & LTC7871 buck/boost controllers

Mouser has announced that it is now stocking the LT8228 and LTC7871 bidirectional buck/boost controllers from Analog Device.

Offering bidirectional voltage or current regulation and bidirectional reverse current protection, the LT8228 and LTC7871 controllers provide a reliable power solution for dual-battery automotive and industrial systems.

The LT8228 is a single-phase controller that offers a stable power solution for 48 V and 12 V dual-battery systems in automobiles, in which the 12 V bus powers the lighting, infotainment, and audio systems, while the 48 V bus powers active chassis systems, air conditioning compressors, and other performance systems. The device is a 100 V constant-voltage or constant-current synchronous buck or boost controller, with the direction of power flow determined automatically by the LT8228 itself or controlled externally.

The controller features input and output protection MOSFETs to control inrush currents, guard against negative voltages, and provide isolation between terminals under fault conditions. It is also a suitable option for power interruption protection systems, high-power system backup and stabilisation, and “N+1” redundant, high-reliability power supplies.

The LTC7871 is a six-phase bidirectional switching regulator controller that operates in either buck or boost mode on demand via control signal, making it suitable for automotive 48 V and 12 V dual-battery systems as well. The LTC7871 allows both batteries to supply energy to the load simultaneously by driving energy from either battery to the other. Its proprietary constant frequency current mode architecture enhances the signal-to-noise ratio, enabling low-noise operation and providing excellent current matching between phases.

Additional features include an SPI-compliant serial interface, discontinuous or continuous mode of operation, overvoltage and under-voltage monitors, independent loop compensation for buck and boost operation, accurate inductor current monitoring, and overcurrent protection.

For evaluation, Mouser is also stocking the Analog Devices LT8228 demo circuit DC2351A, designed to have 36V to 54V on one side and 8V to 14V on the other side. The circuit can supply a 35A maximum output current in buck mode while delivering 7A of current in boost mode. The DC2351A demo circuit can be paralleled with other DC2351A boards, enabling increased output current with adequate airflow or heatsinking.

Neil Tyler

Comment on this article

This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:

Add your comments


Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

CES 2022 Review

Some of the key trends, innovations and news from this year’s Consumer ...

Get to market faster

A quick look at using Vicor's PFM and AIM in VIA packaging for your AC to Point ...

World IoT Day

ByteSnap Design, a specialist in embedded systems design and development, has ...