Overview
The FAN73892MX is a monolithic three-phase half-bridge gate-drive IC designed by onsemi for high-voltage, high-speed applications. It is specifically engineered to drive MOSFETs and IGBTs operating up to +600 V. The IC utilizes onsemi’s high-voltage process and common-mode noise-canceling technique to ensure stable operation of high-side drivers even under high-dv/dt noise conditions. This device is ideal for three-phase half-bridge applications in motor drive systems, offering advanced protection features and robust performance.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| High-Side Floating Offset Voltage (VS1,2,3) | -25 | - | 0.3 | V |
| High-Side Floating Supply Voltage (VB1,2,3) | -0.3 | - | 625.0 | V |
| Low-Side and Logic Fixed Supply Voltage (VDD) | -0.3 | - | 25.0 | V |
| Input Voltage (VIN) | -0.3 | - | 5.5 | V |
| Turn-On Propagation Delay (tON) | 350 | 500 | 650 | ns |
| Turn-Off Propagation Delay (tOFF) | 350 | 500 | 650 | ns |
| Turn-On Rise Time (tR) | 20 | 50 | 100 | ns |
| Turn-Off Fall Time (tF) | 10 | 30 | 80 | ns |
| Ambient Temperature (TA) | -40 | - | 125 | °C |
| Junction Temperature (TJ) | - | - | 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
- Outputs out of phase with input signals
- 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 conditioner, washing machine, refrigerator, dish washer
- Industrial inverter – sewing machine, power tool
- General-purpose three-phase inverter
Q & A
- What is the maximum operating voltage for the high-side floating supply of the FAN73892MX?
The maximum operating voltage for the high-side floating supply (VB1,2,3) is 625.0 V.
- What is the typical current-driving capability of the FAN73892MX?
The FAN73892MX typically sources and sinks 350 mA and 650 mA, respectively.
- What is the purpose of the built-in UVLO functions in the FAN73892MX?
The built-in UVLO (Under-Voltage Lockout) functions prevent malfunction when VDD and VBS are lower than the threshold voltage.
- How does the over-current protection work in the FAN73892MX?
Over-current protection turns off all six drivers when an over-current condition is detected via an external current-sense resistor.
- What is the ambient temperature range for the FAN73892MX?
The ambient temperature range for the FAN73892MX is -40°C to +125°C.
- Is the FAN73892MX compatible with both 3.3 V and 5.0 V input logic?
Yes, the FAN73892MX is compatible with both 3.3 V and 5.0 V input logic.
- What is the purpose of the common-mode dv/dt noise-canceling circuit in the FAN73892MX?
The common-mode dv/dt noise-canceling circuit ensures stable operation of high-side drivers under high-dv/dt noise conditions.
- How does the fault-clear timing work in the FAN73892MX?
The fault-clear timing is adjustable and determined by an internal current source and an external capacitor at the RCIN pin.
- What types of applications is the FAN73892MX suitable for?
The FAN73892MX is suitable for 3-phase motor inverter drivers, industrial inverters, and general-purpose three-phase inverters.
- What is the package type and operating temperature range for the FAN73892MX?
The FAN73892MX comes in a 28-Lead, Small Outline Integrated Circuit (SOIC) package and operates from -40°C to +125°C.
