75 to 91V 600W TVS for electric vehicle battery management

Littelfuse is aiming at electric vehicle battery management systems with its latest transient voltage suppressor diodes.

Specifically, the unidirectional diodes in the TPSMB-L series are for protecting analogue front-ends and IC in 14 to 20 cell sub-assemblies.

There are three parts, all rated for 600W 10/1,000μs pulses (0.01% duty cycle) and come in ~3.6 x 5.3mm DO-214AA (SMB) packaging:

Reverse parameters	Stand-off at 1uA	Break-down at 1mA	Max clamp 10/1,000μs	Max clamp 8/20μs 10A	Max clamp 8/20μs
TPSMB75A-L	64.1V	70.4 – 78.8V	96V at 5.9A	83A	95V 29.5A
TPSMB82A-L	70.1V	77 – 86.1V	100V at 5.4A	90A	100V 27A
TPSMB91A-L	77.8V	85.4 – 95.5V	114V at 4.9A	100A	109V 24.5A

Operated in forward conduction, the drop is 3.5Vmax during a 50A pulse.

ESD protection of data lines to IEC 61000-4-2 is 30kV air and 30kV contact, according to the company, and EFT data line protection accords with IEC 61000-4-4.

The parts are AEC-Q101 qualified with PPAP Level 3 compliance.

Recommended Articles

Steve Bush

Steve Bush is the long-standing technology editor for Electronics Weekly, covering electronics developments for more than 25 years. He has a particular interest in the Power and Embedded areas of the industry. He also writes for the Engineer In Wonderland blog, covering 3D printing, CNC machines and miscellaneous other engineering matters.