Overview
The VOM1271T, produced by Vishay Semiconductor Opto Division, is a stand-alone optically isolated MOSFET driver. This component is designed to eliminate the need for an external power supply, as it derives the necessary current for its internal circuitry from the LED current on the low-voltage primary side of the isolation barrier. This design saves space and reduces costs associated with providing external power supplies. The VOM1271T also integrates a rapid turn-off circuit, enhancing switching speed and reducing turn-off time without the need for additional components. Its small SOP4 package makes it an ideal solution for a variety of MOSFET driver applications, offering a highly integrated and isolated gate driver solution.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Open Circuit Voltage at IF = 10 mA | 8.4 | V |
| Short Circuit Current at IF = 10 mA | 15 | μA |
| Isolation Test Voltage | 3750 | VRMS |
| Logic Compatible Input | Yes | |
| Isolation Resistance at Tamb = 25 °C, VIO = 500 V | ≥ 10^12 | Ω |
| Isolation Resistance at Tamb = 100 °C, VIO = 500 V | ≥ 10^11 | Ω |
| Output Safety Power | 350 | mW |
| Input Safety Current | 150 | mA |
| Input Safety Temperature | 175 | °C |
| Creepage Distance (SOP-4) | ≥ 5 | mm |
| Clearance Distance (SOP-4) | ≥ 5 | mm |
| Insulation Thickness (DTI) | ≥ 0.4 | mm |
Key Features
- Stand-alone optically isolated MOSFET driver without the need for an external power supply.
- Integrated rapid turn-off circuitry to enhance switching speed.
- Logic compatible input for easy integration with digital circuits.
- High reliability and isolation ratings suitable for safe electrical insulation.
- Small SOP4 package for a compact footprint.
- Open circuit voltage at IF = 10 mA: 8.4 V typical.
- Short circuit current at IF = 10 mA: 15 μA typical.
- Isolation test voltage: 3750 VRMS.
Applications
The VOM1271T is suitable for a wide range of MOSFET driver applications, including:
- Bidirectional MOSFET drivers.
- Single MOSFET drivers.
- Industrial control systems.
- Automotive systems requiring high isolation and reliability.
- Medical devices where safety and isolation are critical.
- Telecommunications and aerospace applications needing compact, high-performance drivers.
Q & A
- What is the VOM1271T?
The VOM1271T is a stand-alone optically isolated MOSFET driver produced by Vishay Semiconductor Opto Division.
- Does the VOM1271T require an external power supply?
No, the VOM1271T does not require an external power supply as it derives its power from the LED current on the low-voltage primary side of the isolation barrier.
- What is the isolation test voltage of the VOM1271T?
The isolation test voltage of the VOM1271T is 3750 VRMS.
- What are the key features of the VOM1271T?
The key features include integrated rapid turn-off circuitry, logic compatible input, high reliability, and a small SOP4 package.
- What are the typical open circuit voltage and short circuit current at IF = 10 mA?
The typical open circuit voltage is 8.4 V, and the typical short circuit current is 15 μA at IF = 10 mA.
- What are the safety ratings for the VOM1271T?
The VOM1271T has safety ratings including input safety current of 150 mA, input safety temperature of 175 °C, and insulation thickness of ≥ 0.4 mm.
- What are the common applications of the VOM1271T?
Common applications include bidirectional and single MOSFET drivers, industrial control systems, automotive systems, medical devices, and telecommunications and aerospace applications.
- What is the creepage and clearance distance for the SOP-4 package?
The creepage and clearance distance for the SOP-4 package is ≥ 5 mm each.
- Is the VOM1271T suitable for high-reliability applications?
Yes, the VOM1271T is designed for high-reliability applications and is suitable for safe electrical insulation.
- What is the output safety power of the VOM1271T?
The output safety power of the VOM1271T is 350 mW.
