The TLP118(V4-TPR,E(T is a high-speed photocoupler from Toshiba Semiconductor and Storage. It's designed for applications requiring electrical isolation between input and output circuits. This photocoupler consists of a gallium arsenide (GaAs) infrared emitting diode optically coupled to a silicon phototransistor.

Applications

• Programmable Logic Controllers (PLCs): Used for isolating control signals in industrial automation systems.
• Inverter Circuits: Provides isolation between the control and power stages in inverters.
• AC Servo Motor Controllers: Isolates feedback signals from the motor drive circuitry.
• Switching Power Supplies: Ensures safe and reliable operation by isolating the primary and secondary sides.
• Communication Equipment: Used in data transmission systems to prevent ground loops and improve noise immunity.

Features

• High Isolation Voltage: Offers a high isolation voltage (typically 5000 Vrms) between input and output.
• High Collector-Emitter Voltage: Can withstand high voltage levels on the output side.
• High-Speed Switching: Supports fast switching speeds, making it suitable for high-frequency applications.
• Compact Package: Available in a small outline package for space-saving designs.
• RoHS Compliant: Meets environmental regulations for hazardous substances.

Benefits

• Enhanced Safety: Provides electrical isolation to protect sensitive circuits and personnel from high voltages.
• Improved Noise Immunity: Reduces the impact of noise and interference on signal integrity.
• Reliable Performance: Offers stable and consistent performance over a wide range of operating conditions.
• Simplified Design: Simplifies circuit design by providing a convenient isolation solution.
• Long Operating Life: Ensures long-term reliability in demanding applications.

Additional Details

The TLP118 series features a current transfer ratio (CTR) that varies depending on the specific grade. It is important to refer to the datasheet for the exact CTR range for the TLP118(V4-TPR,E(T variant. The operating temperature range typically spans from -55°C to +110°C. The input forward voltage is around 1.2V, and the output collector-emitter voltage can reach up to 80V. Proper external resistors are needed to limit current and voltage to safe operating levels. The device is packaged in a 4-pin DIP package, with different lead forming options available.