Product category:
Circuit Protection Devices
News Release from: Toshiba Electronics Europe | Subject: TLP350
Edited by the Electronicstalk Editorial
Team on 27 April 2004
Photocoupler improves transient
protection
The latest high-output-current photocoupler requires up to 80% less supply current than previous generation technologies in the same package size.
Toshiba has expanded its family of ultra-low-power optically coupled isolators with the introduction of a high-output-current photocoupler that requires up to 80% less supply current than previous generation technologies in the same package size Offering a peak output current of 2.0A, the new TLP350 photocoupler is ideally suited to industrial and home appliance applications including industrial inverters, high power type mosfet gate drives and IGBT gate drives
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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A maximum supply current rating of just 2mA has been achieved through the use of Toshiba's BiCMOS semiconductor technology, and common-mode transient immunity has been increased to 115kV/us.
In addition, the TLP350 offers an undervoltage lockout (UVLO) function that protects against fault conditions that might cause the voltage to drop below the threshold needed to keep the IGBT in a low resistance state.
The TLP350 integrates an LED and photodetector into a single, compact 8-pin DIP device with a rated isolation voltage of 3.75kV RMS.
By offering this electrical isolation, the TLP350 allows engineers to address a variety of design issues including connection of different voltages, elimination of electrical noise, and protection from electric shock.
Fully pin-compatible with Toshiba's existing TLP250 8-pin DIP photocouplers, the TLP350 allows engineers to improve the performance of existing applications without board redesign.
In addition, a reduced power dissipation of just 60mW - compared with 330mW for the TLP250 - reduces the space required for heat dissipation, allowing higher component densities to be achieved in new designs.
The TLP350 can be used at temperatures between -40 and +100C, and provides a guaranteed maximum delay time of less than 5us across the full temperature range.
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