Toshiba Electronic Devices & Storage Corporation (Toshiba) has launched an automotive photorelay, “TLX9165T.” The new automotive photorelay TLX9165T comes in a 10pin SO16L-T package while supporting high voltage automotive batteries. The new rollout comes with an output withstand voltage of 1800V (min).
Volume shipments start today.
Wider acceptance of electric vehicles depends on improved charging times and longer cruising ranges, both of which necessitate more effective battery system operation.
By keeping track of the battery’s charge level and the insulation between the battery and the vehicle body—both of which are critical for the safe usage of high-voltage batteries—battery management systems (BMS) enable effective system operation. Electrically isolated photorelays are used in BMSs that have to manage large voltages.
Similar to BMS, energy storage systems (ESS), which are used to ensure the efficient operation of renewable energy, use electrically isolated photorelays and can withstand high voltages similar to those of electric vehicles.
Although 400V battery systems are currently the most common in electric cars, the move to 800V systems will be accelerated by rising demand for longer cruising ranges and quicker charging.
The withstand voltage of the photorelays used in those battery systems must be at least 1600V, or roughly twice the system voltage for an 800V system.
A recently created high-voltage MOSFET with an output withstand voltage of 1800V(min) is used in Toshiba’s new Automotive photorelay, making it appropriate for 800V systems.
The 10-pin SO16L-T package adopts a resin with a Comparative Tracking Index (CTI) of 600 or more, putting it in material group I of the IEC 60664-1 international standard, and the pin configuration ensures a creepage distance of 7.5mm or more on the light receiver side. These features are compliant with IEC 60664-1, and deliver an operating voltage of 1500V.
The pin pitch and pin configuration are the same as SO16L-T, allowing the common use of PCB pattern design.
Toshiba will continue to develop photorelay products suitable for battery systems in automotive applications and energy storage systems in industrial equipment, contributing to the safe operation of equipment.
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