Overview
The FOD3120SD is a high-performance gate drive optocoupler produced by onsemi, designed to drive medium power IGBTs and MOSFETs. This component is part of the FOD3120 series and is specifically packaged in an 8-pin SMT (Surface Mount Technology) package with lead bend. It is optimized for fast switching applications, particularly in motor control inverter systems and high-performance power systems. The FOD3120SD utilizes onsemi’s coplanar packaging technology, OPTOPLANAR®, and features an integrated circuit with a high-speed driver for a push-pull MOSFET output stage.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Peak Output Current | 2.5 A | A |
| Supply Voltage Range | 15 V to 30 V | V |
| Propagation Delay | 400 ns (max) | ns |
| Pulse Width Distortion | 100 ns (max) | ns |
| Operating Temperature Range | −40°C to 100°C | °C |
| Common Mode Transient Immunity | 35 kV/μs (min) | kV/μs |
| Insulation Voltage | 1414 V (peak) | V |
| Safety and Regulatory Approvals | UL1577, DIN EN/IEC60747-5-5 | - |
Key Features
- High noise immunity characterized by 35 kV/μs minimum common mode rejection.
- 2.5 A peak output current driving capability for most 1200 V/20 A IGBTs.
- Use of P-channel MOSFETs at the output stage enables output voltage swing close to the supply rail.
- Fast switching speed with maximum propagation delay of 400 ns and pulse width distortion of 100 ns.
- Under Voltage LockOut (UVLO) with hysteresis.
- Extended industrial temperature range from −40°C to 100°C.
- Low power dissipation with RDS(ON) of 1 Ω (typ.).
- Clearance and creepage distance of >8.0 mm (Option ‘T’ or ‘TS’).
Applications
- Industrial Inverter
- Uninterruptible Power Supply (UPS)
- Induction Heating
- Isolated IGBT/Power MOSFET Gate Drive
Q & A
- What is the peak output current of the FOD3120SD?
The peak output current of the FOD3120SD is 2.5 A.
- What is the supply voltage range for the FOD3120SD?
The supply voltage range is from 15 V to 30 V.
- What is the maximum propagation delay of the FOD3120SD?
The maximum propagation delay is 400 ns.
- What is the common mode transient immunity of the FOD3120SD?
The common mode transient immunity is 35 kV/μs (min).
- What are the safety and regulatory approvals for the FOD3120SD?
The FOD3120SD is approved by UL1577 and DIN EN/IEC60747-5-5.
- What is the operating temperature range of the FOD3120SD?
The operating temperature range is from −40°C to 100°C.
- Does the FOD3120SD have under voltage lockout (UVLO) feature?
- What is the typical RDS(ON) value for the FOD3120SD?
The typical RDS(ON) value is 1 Ω.
- What are the typical applications of the FOD3120SD?
The FOD3120SD is typically used in industrial inverters, uninterruptible power supplies, induction heating, and isolated IGBT/Power MOSFET gate drive applications.
- Is the FOD3120SD a Pb-free device?
