Optical coupling isolation amplifiers

Toshiba Electronics Europe has announced two digital output isolation amplifiers for current and voltage sensing in power converters.

The TLP7830 and TLP7930 achieve high accuracy through the inclusion of a delta sigma A/D converter at the input side that enables the devices to achieve a typical linearity of 4 LSB at INL. Therefore, the devices can achieve high-precision operation by monitoring the phase current of motors and bus voltage fluctuations when providing feedback to the MCUs used in factory automation equipment.

TLP7830 and TLP7930 provide a guaranteed common mode transient immunity of 20kV/µs and this enables stable operation in electrically noisy environments. The optical barrier guarantees an isolation voltage of 5000V rms. The devices have been designed to operate in temperatures ranging from -40 to 105°C.

A choice of two package types is available: TLP7930 is supplied in an industry-standard DIP8 package and the TLP7830 is available in a new compact SO8L package.