Overview
The FAN7392MX is a monolithic high- and low-side gate drive IC produced by ON Semiconductor. This device is designed to drive high-speed MOSFETs and IGBTs that operate up to +600V. It features a buffered output stage with all NMOS transistors, which provides high pulse current driving capability and minimizes cross-conduction. The IC utilizes ON Semiconductor’s high-voltage process and common-mode noise canceling techniques to ensure stable operation under high dv/dt noise conditions. An advanced level-shift circuit enables high-side gate driver operation up to VS=-9.8V (typical) for VBS=15V. The logic inputs are compatible with standard CMOS or LSTTL output, down to 3.3V logic, and the UVLO circuit prevents malfunction when VCC and VBS are below the specified threshold voltage.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VB (High-Side Floating Supply Voltage) | -0.3 | 625.0 | V |
| VS (High-Side Floating Offset Voltage) | VB-25.0 | VB+0.3 | V |
| VHO (High-Side Floating Output Voltage) | VS-0.3 | VB+0.3 | V |
| VCC (Low-Side Supply Voltage) | -0.3 | 25.0 | V |
| VLO (Low-Side Floating Output Voltage) | -0.3 | VCC+0.3 | V |
| VDD (Logic Supply Voltage) | -0.3 | VSS+25.0 | V |
| VIN (Logic Input Voltage) | VSS-0.3 | VDD+0.3 | V |
| IO+ (Output High, Short-Circuit Pulsed Current) | 2.5 | 3.0 | A |
| IO- (Output Low, Short-Circuit Pulsed Current) | 2.5 | 3.0 | A |
| TJ (Maximum Junction Temperature) | 150 | °C | |
| TSTG (Storage Temperature) | -55 | 150 | °C |
| TA (Operating Ambient Temperature) | -40 | 125 | °C |
Key Features
- Floating Channel for Bootstrap Operation up to +600V
- 3A/3A Sourcing/Sinking Current Driving Capability
- Common-Mode dv/dt Noise Canceling Circuit
- 3.3V Logic Compatible
- Separate Logic Supply (VDD) Range from 3.3V to 20V
- Under-Voltage Lockout for VCC and VBS
- Cycle-by-Cycle Edge-Triggered Shutdown Logic
- Matched Propagation Delay for Both Channels
- Outputs In-phase with Input Signals
- Available in 14-DIP and 16-SOP (Wide) Packages
Applications
- High-Speed Power MOSFET and IGBT Gate Driver
- Server Power Supply
- Uninterrupted Power Supply (UPS)
- Telecom System Power Supply
- Distributed Power Supply
- Motor Drive Inverter
- Half- and Full-Bridge Inverters, such as switching-mode power supplies and high-power DC-DC converters
- PDP TV, Motion Control, Electric Bike, and other Industrial Applications
Q & A
- What is the maximum voltage the FAN7392MX can handle?
The FAN7392MX can handle high-side floating supply voltages up to +600V.
- What is the current driving capability of the FAN7392MX?
The FAN7392MX has a 3A/3A sourcing/sinking current driving capability.
- Is the FAN7392MX compatible with 3.3V logic?
- What are the package options for the FAN7392MX?
The FAN7392MX is available in 14-DIP and 16-SOP (Wide) packages.
- What is the purpose of the UVLO circuit in the FAN7392MX?
The UVLO (Under-Voltage Lockout) circuit prevents malfunction when VCC and VBS are lower than the specified threshold voltage.
- How does the FAN7392MX handle high dv/dt noise?
The FAN7392MX uses common-mode noise canceling techniques to ensure stable operation under high dv/dt noise conditions.
- What is the recommended PCB layout to minimize parasitic elements?
The recommended PCB layout includes direct tracks between switches, avoiding interconnect links, reducing lead-inductance, co-locating power switches, and minimizing noise coupling by not placing the ground plane under or near the high-voltage floating side.
- What components are recommended for the bootstrap circuit?
A low-ESR capacitor (such as a ceramic capacitor) for the bootstrap capacitor and a fast recovery or ultra-fast recovery diode can be used if necessary.
- What are the typical applications of the FAN7392MX?
The FAN7392MX is typically used in high-speed power MOSFET and IGBT gate driver applications, server power supplies, UPS, telecom system power supplies, distributed power supplies, and motor drive inverters.
- What is the maximum junction temperature for the FAN7392MX?
The maximum junction temperature for the FAN7392MX is +150°C.
