Overview
The FAN3227CMX, part of the FAN3226-29 family, is a dual 2-A high-speed, low-side gate driver designed by onsemi. This component is specifically tailored to drive N-channel enhancement-mode MOSFETs in low-side switching applications. It provides high peak current pulses during short switching intervals, making it ideal for high-efficiency MOSFET switching and synchronous rectifier circuits. The FAN3227CMX features dual non-inverting drivers with independent enable pins, which default to ON if not connected. The device incorporates MillerDrive architecture, a bipolar-MOSFET combination that minimizes switching loss and provides rail-to-rail voltage swing and reverse current capability.
Key Specifications
| Parameter | Unit | Typical | Minimum | Maximum |
|---|---|---|---|---|
| Operating Voltage Range | V | - | 4.5 | 18 |
| Peak Sink/Source Current at VDD = 12 V | A | - | - | 3 |
| Sink/Source Current at VOUT = 6 V | A | - | 1.6 (Source) | 2.4 (Sink) |
| Rise/Fall Times (1-nF Load) | ns | 9/12 | - | - |
| Propagation Delay | ns | < 20 | - | - |
| Ambient Temperature Range | °C | - | -40 | 125 |
| Package Type | - | - | - | SOIC-8 |
Key Features
- Industry-standard pinouts
- Dual non-inverting drivers with independent enable pins
- Choice of TTL or CMOS input thresholds
- Internal resistors turn driver off if no inputs are connected
- MillerDrive technology for high current during MOSFET turn-on/turn-off
- Under 20-ns typical propagation delay matched within 1 ns to the other channel
- Double current capability by paralleling channels
- Rated from –40°C to +125°C ambient
- Pb-free devices
- AEC-Q100 qualified and PPAP capable
Applications
- Switch-mode power supplies
- High-efficiency MOSFET switching
- Synchronous rectifier circuits
- DC-to-DC converters
- Motor control
- Servers
- Automotive-qualified systems
Q & A
- What is the operating voltage range of the FAN3227CMX?
The operating voltage range is from 4.5 V to 18 V.
- What is the peak sink/source current capability of the FAN3227CMX at VDD = 12 V?
The peak sink/source current is up to 3 A.
- What are the typical rise and fall times for the FAN3227CMX with a 1-nF load?
The typical rise and fall times are 12 ns and 9 ns, respectively.
- Can the FAN3227CMX be used in high-temperature environments?
- What is the MillerDrive technology used in the FAN3227CMX?
The MillerDrive technology is a bipolar-MOSFET combination that provides high current during the Miller plateau stage of the MOSFET turn-on/turn-off process, minimizing switching loss.
- How can the current capability of the FAN3227CMX be increased?
The current capability can be doubled by paralleling the channels.
- What types of input thresholds are available for the FAN3227CMX?
The device is available with either TTL or CMOS input thresholds.
- What is the purpose of the internal resistors in the FAN3227CMX?
The internal resistors turn the driver off if no inputs are connected.
- Is the FAN3227CMX Pb-free and AEC-Q100 qualified?
- What are some common applications of the FAN3227CMX?
