Overview
The FOD8343 series, including the FOD8343R2, is a high-performance gate drive optocoupler produced by onsemi. This component is designed to drive medium-power IGBTs and MOSFETs, making it ideal for fast-switching applications in motor-control inverter systems and high-performance power systems. The FOD8343 series features an Aluminum Gallium Arsenide (AlGaAs) Light-Emitting Diode (LED) optically coupled to an integrated circuit with a high-speed driver for a push-pull MOSFET output stage. The device is housed in a stretched body, 6-pin, small outline plastic package, which enhances creepage and clearance distances for reliable high-voltage insulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Peak Output Current | 4.0 A | A |
| Supply Voltage Range | 10 V to 30 V | V |
| Propagation Delay Time to Logic Low Output | 50 ns to 210 ns | ns |
| Propagation Delay Time to Logic High Output | 50 ns to 210 ns | ns |
| Pulse Width Distortion | -35 ns to 65 ns | ns |
| Common Mode Rejection | 50 kV/μs (minimum) | kV/μs |
| Ambient Operating Temperature Range | -40°C to 100°C | °C |
| Maximum Working Insulation Voltage | 891 V (FOD8343), 1,140 V (FOD8343T) | Vpeak |
| Safety and Regulatory Approvals | UL1577, 5,000 VRMS for 1 minute; DIN EN/IEC60747-5-5 | - |
Key Features
- High-speed gate drive optocoupler with 4.0 A maximum peak output current, suitable for driving medium-power IGBTs and MOSFETs.
- Use of P-channel MOSFETs at the output stage enables output voltage swing close to the supply rail.
- Wide supply voltage range: 10 V to 30 V.
- Fast switching speed over the full operating temperature range.
- Under-voltage lockout (UVLO) with hysteresis.
- Extended industrial temperature range: -40°C to 100°C.
- High-insulation voltage and high-noise immunity due to optimized IC design and stretched body package.
- Compliance with safety standards such as UL1577 and DIN EN/IEC60747-5-5.
Applications
- AC and brushless DC motor drives.
- Industrial inverter systems.
- Uninterruptible power supply (UPS) systems.
- Induction heating applications.
- Isolated IGBT/power MOSFET gate drive applications.
Q & A
- What is the maximum peak output current of the FOD8343 series?
The maximum peak output current is 4.0 A.
- What is the supply voltage range for the FOD8343 series?
The supply voltage range is from 10 V to 30 V.
- What is the propagation delay time for the FOD8343 series?
The propagation delay time to logic low or high output is between 50 ns and 210 ns.
- What is the common mode rejection rate of the FOD8343 series?
The minimum common mode rejection rate is 50 kV/μs.
- What is the operating temperature range for the FOD8343 series?
The ambient operating temperature range is from -40°C to 100°C.
- What safety and regulatory approvals does the FOD8343 series have?
The FOD8343 series complies with UL1577 and DIN EN/IEC60747-5-5 standards.
- What types of applications is the FOD8343 series suitable for?
The FOD8343 series is suitable for AC and brushless DC motor drives, industrial inverter systems, UPS systems, induction heating, and isolated IGBT/power MOSFET gate drive applications.
- What is the maximum working insulation voltage for the FOD8343T?
The maximum working insulation voltage for the FOD8343T is 1,140 Vpeak.
- Does the FOD8343 series have under-voltage lockout (UVLO) protection?
Yes, the FOD8343 series includes under-voltage lockout (UVLO) with hysteresis.
- What is the package type and pin configuration of the FOD8343 series?
The device is housed in a stretched body, 6-pin, small outline plastic package.
