Toshiba introduces optically coupled isolators
Toshiba Electronics
TLP358 isolators
Toshiba Electronics Europe has introduced a range of ultra-low-power optically coupled isolators designed to drive IGBTs and power Mosfets in applications requiring output currents up to +/-6.0A.
The TLP358 range of driver IC photocouplers is suitable for industrial inverters, AC/DC servos, induction heating systems, factory automation equipment and other applications that require high-output-current driver stages.
The range can operate in temperatures from -40C to +100C, while the TLP358H high-temperature type is designed for temperatures from -40C to +125C.
Both couplers are available in versions - TLP358F and TLP358HF respectively - that offer minimum creepage and clearance distances of 8mm.
All of the new couplers operate with a maximum supply current of 2mA and feature a minimum isolation voltage of 3750Vrms.
Minimum common-mode transient immunity is rated at +/-15kV/us.
An integrated under-voltage lockout function protects against fault conditions that might cause the voltage to drop below the threshold needed to keep an IGBT in a low-resistance state.
Based around a GaAlAs infrared light-emitting diode and an integrated photodetector, the isolation offered by the TLP358 couplers helps to protect against electric shock, to eliminate electrical noise and to provide a solution for connecting different voltages.
The new couplers are supplied in an eight-pin DIP package measuring 9.7 x 6.4 x 3.7mm and will operate with supply voltages from 15V to 30V.
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