Overview
The FAN3217TMX from onsemi is a dual 2A high-speed gate driver designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications. It provides high peak current pulses during short switching intervals and features TTL input thresholds. The driver includes internal circuitry for under-voltage lockout, ensuring the output remains LOW until the supply voltage is within the operating range. The FAN3217TMX is particularly useful in applications requiring dual gate drives with critical timing, such as synchronous rectifiers, and it can be used to double the current capability by paralleling channels.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 |
| Output Current | 2 A (sink/source) |
| Supply Voltage Range | 4.5 V to 18 V |
| Configuration | Non-Inverting |
| Package Type | SOIC-8 |
| Operating Temperature Range | -40°C to +125°C |
| Rise Time (typical) | 12 ns (with 1 nF load) |
| Fall Time (typical) | 9 ns (with 1 nF load) |
| Propagation Delay (typical) | Under 20 ns, matched within 1 ns to the other channel |
Key Features
- MillerDrive™ technology for high current during the Miller plateau stage, minimizing switching loss and providing rail-to-rail voltage swing and reverse current capability.
- Internal under-voltage lockout function to ensure the output remains LOW until the supply voltage is within the operating range.
- Matched internal propagation delays between A and B channels, suitable for applications requiring critical timing.
- Ability to double the current capability by paralleling channels.
- Industry-standard pinouts and standard SOIC-8 package.
- Internal resistors to turn the driver off if no inputs are present.
Applications
The FAN3217TMX is suitable for various low-side switching applications, including but not limited to:
- Synchronous rectifiers due to its matched propagation delays and high-speed operation.
- Automotive industry applications where high reliability and wide operating temperature ranges are necessary.
- Other high-frequency switching applications requiring precise timing and high current drive capability.
Q & A
- What is the primary function of the FAN3217TMX?
The FAN3217TMX is a dual 2A high-speed gate driver designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications.
- What is the supply voltage range for the FAN3217TMX?
The supply voltage range is from 4.5 V to 18 V.
- What type of configuration does the FAN3217TMX offer?
The FAN3217TMX offers a non-inverting configuration.
- What is the typical rise and fall time of the FAN3217TMX?
The typical rise time is 12 ns and the typical fall time is 9 ns with a 1 nF load.
- Can the FAN3217TMX be used in high-temperature environments?
Yes, it operates from -40°C to +125°C.
- What technology does the FAN3217TMX use for its final output stage?
The FAN3217TMX uses MillerDrive™ technology, a bipolar-MOSFET combination.
- How can the current capability of the FAN3217TMX be increased?
The current capability can be doubled by paralleling the channels.
- What is the package type of the FAN3217TMX?
The package type is SOIC-8.
- Does the FAN3217TMX have internal under-voltage lockout?
Yes, it has an internal under-voltage lockout function.
- What are some typical applications for the FAN3217TMX?
Typical applications include synchronous rectifiers and automotive industry applications.
