Infineon PVT312LS-TPBF Optocoupler: Key Features, Applications, and Technical Specifications

The Infineon PVT312LS-TPBF is a high-performance, single-channel optocoupler designed to provide reliable electrical isolation and signal transmission in a compact and efficient package. This device is part of Infineon's extensive portfolio of optoelectronic components, engineered to meet the rigorous demands of modern industrial and automotive applications.

Key Features

One of the most significant attributes of the PVT312LS-TPBF is its high current transfer ratio (CTR). This ensures efficient signal transfer from the input to the output side, even with low input drive currents, which is crucial for energy-efficient designs. The device features a gallium arsenide (GaAs) infrared LED coupled with a silicon phototransistor detector, providing a robust and stable isolation barrier.

It offers a high isolation voltage of 5000 Vrms, making it exceptionally suitable for applications requiring robust protection against high voltage transients and noise. The device is also characterized by its high reliability and long-term stability, capable of operating over a wide temperature range from -55 °C to +110 °C. Furthermore, its compact and gull-wing SMD package (SO-4) makes it ideal for automated PCB assembly and space-constrained applications.

Applications

The PVT312LS-TPBF is versatile and finds use in numerous sectors. Its primary function is to provide electrical isolation in systems where high voltages must be separated from low-voltage control circuits. Key application areas include:

Industrial Control Systems: Used for isolating microprocessor I/O lines, programmable logic controllers (PLCs), and sensor interfaces.

Switch Mode Power Supplies (SMPS): Provides feedback loop isolation, enhancing safety and performance.

Automotive Electronics: Employed in electric vehicle (EV) charging systems, battery management systems (BMS), and other applications requiring high noise immunity and reliability.

Data Acquisition Systems: Isolates analog and digital sections to prevent noise corruption and ground loops.

General Purpose Inverter and Motor Control: Isolates control signals from power stages.

Technical Specifications

The technical specifications underscore the device's capability:

Collector-Emitter Voltage (VCEO): 80 V

Peak Forward Current (IFM): 1 A

Current Transfer Ratio (CTR): 50% (typical at IF = 1 mA, VCE = 5 V)

Isolation Voltage (Viso): 5000 Vrms

Operating Temperature Range: -55 °C to +110 °C

Package: SO-4 (Small Outline)

ICGOOODFIND

The Infineon PVT312LS-TPBF stands out as a highly reliable and efficient optocoupler solution. Its combination of a high current transfer ratio, exceptional 5000 Vrms isolation, and robust performance across a wide temperature range makes it an excellent choice for designers seeking to enhance safety and noise immunity in industrial, automotive, and power management systems. Its compact SMD package further ensures it meets the demands of modern, miniaturized electronic designs.

Keywords: Optocoupler, Electrical Isolation, Current Transfer Ratio (CTR), High Voltage Isolation, SMD Package.