Three-phase gate-driver IC adds seventh channel for higher integration

IR has included an extra low-side driver in the IRS26302D 600V three-phase gate driver IC, allowing designers to implement a PFC switch or inverter brake in the same device to save footprint and component count.

The IRS26302D also implements extensive protection functions, including negative high-side offset voltage immunity allowing the device to withstand very large negative-voltage transients during high-current switching or short-circuit conditions. Ground-fault protection is also included, as well as overcurrent and over-temperature detection, dead-time protection, shoot-through protection, Under-Voltage Lockout (UVLO) and an external Shutdown pin.

By also providing bootstrap functionality, the IRS26302D saves 50% of bootstrap power supply components and is able to implement over-voltage protection for the system. Additional integrated features include an advanced input filter, which rejects noise and reduces distortion to enhance system performance in motor-control applications.

The IRS26302D is capable of producing 200mA/350mA drive current at a gate-drive voltage of up to 20V, and is compatible with 3.3V input logic.

 

FEATURES Cross-conduction prevention logic Power-on reset Single-pin fault-diagnostic function Diagnostic protocol to address fault register Automatic fault-clear with externallyprogrammable delay

APPLICATIONS Air-conditioner inverters Micro- or Mini-inverter drives General-purpose inverters Motor control

 

 

International Rectifier / IRS26302D