Overview
The FAN3225TMX from onsemi is a high-speed, low-side gate driver designed to drive N-channel enhancement-mode MOSFETs in various switching applications. This dual 4 A gate driver is part of the FAN3223-25 family and is known for its high peak current pulses during short switching intervals, making it suitable for applications requiring high efficiency and precise timing.
Key Specifications
| Parameter | Value |
|---|---|
| Channel Type | Independent |
| Current Capability | 5 A (peak sink/source) |
| Driven Configuration | Low-Side |
| Gate Type | N-Channel MOSFET |
| Input Type | Inverting, Non-Inverting |
| Operating Voltage Range | 4.5 V to 18 V |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Rise Time | 12 ns, 9 ns (typical) |
| Fall Time | 9 ns, 17 ns (typical) |
| Propagation Delay Match | 2 ns to 4 ns |
| Logic Voltage Thresholds | VINL_T: 0.8 V to 1.2 V, VINH_T: 1.6 V to 2.0 V |
Key Features
- Industry-standard pinouts for easy integration.
- MillerDrive architecture for high current during the Miller plateau stage, minimizing switching loss.
- Internal under-voltage lockout function to ensure the output remains LOW until the supply voltage is within the operating range.
- Dual independent enable pins that default to ON if not connected.
- Optional enable function using the second input in the FAN3225 model.
- Matched internal propagation delays between channels for critical timing applications.
- Ability to connect two drivers in parallel to double the current capability.
- AEC-Q100 qualified and PPAP capable, making it suitable for automotive applications.
- Pb-free devices.
Applications
- Switch-mode power supplies.
- High-efficiency MOSFET switching.
- Synchronous rectifier circuits.
- DC-to-DC converters.
- Motor control systems.
- Servers and data center equipment.
- Automotive-qualified systems.
Q & A
- What is the FAN3225TMX used for? The FAN3225TMX is used to drive N-channel enhancement-mode MOSFETs in low-side switching applications.
- What is the current capability of the FAN3225TMX? The FAN3225TMX has a peak current capability of 5 A.
- What are the input types available for the FAN3225TMX? The FAN3225TMX supports both inverting and non-inverting input types.
- What is the operating voltage range of the FAN3225TMX? The operating voltage range is from 4.5 V to 18 V.
- What is the typical rise and fall time of the FAN3225TMX? The typical rise time is 12 ns and the typical fall time is 9 ns.
- Can the FAN3225TMX be used in automotive applications? Yes, the FAN3225TMX is AEC-Q100 qualified and PPAP capable, making it suitable for automotive applications.
- How does the under-voltage lockout function work in the FAN3225TMX? The under-voltage lockout function holds the output LOW until the supply voltage is within the operating range.
- Can multiple FAN3225TMX drivers be connected in parallel? Yes, multiple drivers can be connected in parallel to effectively double the current capability.
- What is the MillerDrive architecture in the FAN3225TMX? The MillerDrive architecture is a bipolar-MOSFET combination that provides high current during the Miller plateau stage, minimizing switching loss.
- What are the logic voltage thresholds for the FAN3225TMX? The logic voltage thresholds are VINL_T: 0.8 V to 1.2 V and VINH_T: 1.6 V to 2.0 V.
