Vishay introduces the VOA300 linear optical coupler

Vishay's AEC-Q102-compliant VOA300 linear optical coupler provides linear voltage transmission across isolation grids. It provides 1.4 MHz data transfer instead of the 200 kHz provided by the isolation amplifier, which makes the response time of the battery management system faster. It provides an isolation voltage of 5,300 VRMS.

The feedback photodiode of VOA300 captures a certain percentage of the LED luminous flux and generates a control signal used to regulate the LED driving current, while the output PIN photodiode generates an output signal linearly related to the luminous flux produced by the LED. The time and temperature stability of the input/output coupler is ensured by the use of matching PIN photodiodes that accurately track the output flux of the LED. The single ended output of the VOA300 can be connected directly to the amplifier stage or to the ADC.

Features

● Through AEC-Q102 standard certification
● 5,300 VRMS isolation voltage
● Transmission gain stability: ±0.005%/°C (typical value)
● Single-ended output provides design flexibility
● Reliable and fast data transmission at 1.4 MHz
● Low input/output capacitance: 1 pF typical value
● High gain linearity: ±0.25%
● Low power consumption below 15 mW
● RoHS compliant, halogen free and Vishay Green requirements

Applications

● Electrically isolated current and voltage measurements in electric vehicles (EVs), including on-board chargers (OBCs), traction inverters, and DC/DC converters