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ALD’s MOSFET boards balance high-voltage supercaps

Advanced Linear Devices, an innovator in analog semiconductors, announced high-voltage supercapacitor-balancing printed circuit boards (PCBs) designed to automatically control leakage current and enhance reliability for applications used in data center, industrial automation, public utility, and transportation systems.

ALD SABMB810028 boards built with ALD810028SCLI SAB MOSFETs provide balancing for 2.8-volt (V), 3.0V and 3.3V supercapacitors arranged in a series stack by equalizing the leakage current of each cell. ALD SAB MOSFET arrays used in each board provide industry’s most scalable, low-power solution. Additionally, the MOSFETS balance each cell through low levels of leakage current without exposure to supercapacitor charge/discharge voltage levels for cells of 3000 Farad (F) or more.

The boards are scalable to meet the growing application of multiple supercapacitor cells in modules to meet the energy storage needs of higher voltage systems. Engineers looking to meet the needs of new 700-volt systems, for example, could arrange 64 ALD SABMB810028 boards together to ensure safe voltage balancing. The ALD SAB MOSFET boards allow supercapacitor cell charging and discharging currents to pass through the cells themselves directly, bypassing SAB MOSFETs mounted on the board with near zero additional leakage current, a superior alternative to other methods where additional power dissipation used by the circuitry far exceeds the supercapacitor energy burn caused by leakage currents.

SABMB810028 board is designed for ease of use as a plug-and-play PCB for supercapacitors of 0.1 farads (F) to 3000F and beyond. The average additional power dissipation due to DC leakage of the supercapacitor is zero, which makes this method of supercapacitor balancing highly energy efficient and well suited for low-loss energy harvesting and long-life battery operated applications. Prices start at $30.17 each for boards ordered in volume. boards.

For more information visit www.aldinc.com.

Components & Devices Technology

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