Advanced Linear Devices Inc. (ALD) recently released the SABMB6, a new six-channel PCB performing supercapacitor programmed controlling (SAB) function for over-voltage protection. The board goals 12-V battery applications where six 2 V tissues are now being increasingly stacked in series or parallel.
The SABMB6 board comes filled with three ALD9100XX SAB MOSFETs that automatically balance up to six linked supercapacitor cells by equalling the leakage current of each cell.
The panel allows a supercapacitor cell’s charging and discharging currents to pass through the pv cells themselves directly while bypassing the SAB MOSFETs mounted on the board with near-zero additional leakage current. Which prohibits additional power management utilised by the circuitry, which many cases exceeds the supercapacitor energy burn triggered by leakage currents.
SABMB6 can balance up to six supercapacitors attached in stack. Image courtesy of ALD.
The newest board ties ALD's joins two- and four-channel PCBs, the SABMB2 and SABMB16, respectively. These multi-channel PCBs can be cascaded with a mix-and-match configurability to automatically balance supercapacitor cells in stacks. The board measures 12-15. 24 mm x 45. 64 mm and is made from RoHS-compliant FR4 material and can operate at the business temperature range of -40 °C to +85 °C.
The SABMB6 board also offers the option of installing the reverse-biased external strength diodes—Schottky rectifiers—across each SAB MOSFET to clamp the surge current transients. The SABMB6 board is also available as a bare PCB so that developers can insert their own SAB MOSFETs on the board.
The plug-and-play PCB bypasses the need for a substantial amount of design work; all that is required is perfect for an industrial engineer to mount the PCB and wire the appropriate connections from the SABMB6 board to the individual supercapacitor nodes. SABMB6, a high-voltage supercapacitor balancing PCB, allows system engineers to test, evaluate, and prototype over-voltage protection in strength systems and then get into production volume.
A PCB Built Around SAB MOSFETs
The high-voltage supercapacitors are progressively utilized to address the energy storage and power backup needs in applications such as datacenters, energy enjoying, transportation, and commercial motorisation. However, over-voltage is a major cause of failures in supercapacitors. To ensure that supercapacitor cells attached in stacks of two or more have a reliable over-voltage protection, SAB MOSFETs are installed on the board.
The SAB MOSFETs balance each supercapacitor mobile through low levels of leakage current without exposing tissues to charge and relieve voltage levels. Here, MOSFETs save supercapacitor leakage current and associated power management by lowering the functioning bias voltage of the leakier of the two supercapacitors related in stack.