Overview
The FAN7389MX1 is a monolithic three-phase half-bridge gate-drive IC designed by ON Semiconductor (formerly Fairchild Semiconductor) for high-voltage, high-speed driving of MOSFETs and IGBTs. This IC is optimized for applications requiring stable operation under high-dv/dt noise conditions, making it suitable for various motor drive systems. The device features an advanced level-shift circuit, common-mode noise-canceling technique, and built-in protection functions such as under-voltage lockout and over-current trip with automatic fault-clear functionality.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VS (High-Side Floating Offset Voltage) | -25.0 | - | +0.3 | V |
| VB (High-Side Floating Supply Voltage) | -0.3 | - | 625.0 | V |
| VDD (Low-Side and Logic-Fixed Supply Voltage) | -0.3 | - | 25.0 | V |
| VIN (Input Voltage) | -0.3 | - | 5.5 | V |
| tON (Turn-On Propagation Delay) | 350 | 500 | 650 | ns |
| tOFF (Turn-Off Propagation Delay) | 350 | 500 | 650 | ns |
| tR (Turn-On Rise Time) | 20 | 50 | 100 | ns |
| tF (Turn-Off Fall Time) | 10 | 30 | 80 | ns |
| TJ (Junction Temperature) | - | - | 150 | °C |
| TSTG (Storage Temperature) | -55 | - | 150 | °C |
Key Features
- Floating Channel for Bootstrap Operation up to +600 V
- Typically 350 mA/650 mA Sourcing/Sinking Current-Driving Capability for All Channels
- Extended Allowable Negative VS Swing to -9.8 V for Signal Propagation at VDD=VBS=15 V
- Output In-Phase with Input Signal
- Over-Current Shutdown Turns Off All Six Drivers
- Matched Propagation Delay for All Channels
- 3.3 V and 5.0 V Input Logic Compatible
- Adjustable Fault-Clear Timing
- Built-in Advanced Input Filter
- Built-in Shoot-Through Prevention Logic
- Built-in Soft Turn-Off Function
- Common-Mode dv/dt Noise Canceling Circuit
- Built-in UVLO Functions for All Channels
Applications
- 3-Phase Motor Inverter Driver
- Air Conditioners
- Washing Machines
- General-Purpose Three-Phase Inverters
Q & A
- What is the maximum voltage rating for the high-side floating supply voltage (VB)?
The maximum voltage rating for the high-side floating supply voltage (VB) is 625.0 V.
- What is the typical sourcing and sinking current capability of the output drivers?
The output drivers typically source 350 mA and sink 650 mA.
- What is the purpose of the common-mode dv/dt noise-canceling circuit?
The common-mode dv/dt noise-canceling circuit provides stable operation of high-side drivers under high-dv/dt noise circumstances.
- How does the over-current protection function work?
Over-current protection terminates all six outputs and can be derived from an external current-sense resistor. An open-drain fault signal indicates over-current or under-voltage shutdown.
- What are the input logic voltage compatibility levels for this IC?
The IC is compatible with 3.3 V and 5.0 V input logic.
- What is the junction temperature range for the FAN7389MX1?
The junction temperature range is from -40°C to 150°C.
- What is the storage temperature range for the FAN7389MX1?
The storage temperature range is from -55°C to 150°C.
- Does the FAN7389MX1 have built-in UVLO functions?
- What is the purpose of the adjustable fault-clear timing feature?
The adjustable fault-clear timing feature allows for customizable fault-clear intervals, enhancing system reliability and flexibility.
- Is the FAN7389MX1 suitable for three-phase motor drive applications?
