Overview
The FAN7888MX, produced by onsemi, is a monolithic three half-bridge gate-drive IC designed for high-voltage, high-speed driving of MOSFETs and IGBTs. This IC operates up to +200 V and is particularly suited for applications requiring stable operation under high-dV/dt noise conditions. The device features advanced level-shift circuits, common-mode noise canceling techniques, and built-in under-voltage lockout (UVLO) and shoot-through prevention circuits. These features make it ideal for three-phase motor drive systems, including battery-based motor applications such as e-bikes and power tools.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VB (High-Side Floating Supply Voltage) | -0.3 | - | 225.0 | V |
| VDD (Low-Side and Logic-Fixed Supply Voltage) | -0.3 | - | 25.0 | V |
| VS (High-Side Floating Supply Offset Voltage) | VB - 25 | - | VB + 0.3 | V |
| VHO (High-Side Floating Output Voltage) | VS - 0.3 | - | VS + 0.3 | V |
| VLO (Low-Side Output Voltage) | -0.3 | - | VDD + 0.3 | V |
| IQDD (Quiescent VDD Supply Current) | - | 160 | 350 | μA |
| IO+ (Output HIGH Short-Circuit Pulsed Current) | 250 | 350 | - | mA |
| IO- (Output LOW Short-Circuit Pulsed Current) | 500 | 650 | - | mA |
| tON (Turn-on Propagation Delay) | - | 130 | 220 | ns |
| tOFF (Turn-off Propagation Delay) | - | 150 | - | ns |
| TJ (Junction Temperature) | - | - | 150 | °C |
| TSTG (Storage Temperature) | -55 | - | 150 | °C |
Key Features
- Floating Channel for Bootstrap Operation up to +200 V
- Typically 350 mA / 650 mA Sourcing/Sinking Current Driving Capability for All Channels
- 3 Half-Bridge Gate Driver Configuration
- Extended Allowable Negative VS Swing to −9.8 V for Signal Propagation at VBS = 15 V
- Matched Propagation Delay Time Maximum: 50 ns
- 3.3 V and 5 V Input Logic Compatible
- Built-in Shoot-Through Prevention Circuit for All Channels with 270 ns Typical Dead Time
- Built-in Common Mode dv/dt Noise Canceling Circuit
- Built-in UVLO Functions for All Channels
- Pb-Free, Halide Free, and RoHS Compliant
Applications
- Battery-Based Motor Applications (E-bike, Power Tool)
- 3-Phase Motor Inverter Driver
Q & A
- What is the maximum operating voltage for the FAN7888MX?
The FAN7888MX operates up to +200 V.
- What is the typical sourcing/sinking current capability of the FAN7888MX?
The device typically sources/sinks 350 mA / 650 mA, respectively.
- What is the purpose of the built-in UVLO functions in the FAN7888MX?
The UVLO functions prevent malfunction when VDD and VBS are lower than the specified threshold voltage.
- How does the shoot-through prevention circuit work in the FAN7888MX?
The circuit prevents the outputs of the high and low sides from turning on at the same time, ensuring safe operation.
- What are the typical propagation delay times for the FAN7888MX?
The turn-on and turn-off propagation delay times are typically 130 ns and 150 ns, respectively.
- Is the FAN7888MX compatible with 3.3 V and 5 V input logic?
Yes, the device is compatible with both 3.3 V and 5 V input logic.
- What is the maximum allowable negative VS swing for signal propagation?
The maximum allowable negative VS swing is −9.8 V for signal propagation at VBS = 15 V.
- What are the typical applications of the FAN7888MX?
The device is typically used in battery-based motor applications and 3-phase motor inverter drivers.
- Is the FAN7888MX RoHS compliant?
Yes, the device is Pb-Free, Halide Free, and RoHS compliant.
- What is the junction temperature range for the FAN7888MX?
The junction temperature range is from −40°C to +125°C.
