Analog Devices, Inc. introduced two components that work together as an integrated analog controller to offer energy recycling and significant performance and cost benefits over current rechargeable battery formation and grading system solutions. The AD8450/1 precision analog front-end and controller, and the ADP1972 buck or boost pwm controller provide energy efficiency benefits in the charging and discharging cycles, both as the current is provided through a pwm controller as well as when it is directed back to the grid or to charge other cells.
Unique to this two-device architecture is the use of analog control loops, which offer significant benefits over the current digital solution. These benefits include faster control of up to 1.5 MHz for the critical signal path, greater than 90 percent efficiency and higher accuracy over temperature. The solution is designed for battery formation and grading systems for medium- and high-energy batteries used in hybrid and electric vehicles, energy storage and industrial tools.
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