General Description

The CA-IS322x devices are a family of dual-channel isolated gate drivers capable of sinking 6A and sourcing 5A peak currents. These devices have very fast switching time,  combined with short propagation delays (56ns, typ) and small pulse width distortion, making them ideal to drive power MOSFET, IGBT or silicon-carbide(SiC) transistors with up to 5MHz frequency in various inverter, isolated power supply or motor control applications.

All devices have integrated digital galvanic isolation using  Chipanalog’s proprietary capacitive isolation technology. They feature isolation for a withstand voltage rating of  3.75kVRMS (narrow SOIC package) or 5.7kVRMS (wide SOIC  package) for 60 seconds with minimum common-mode transient immunity (CMTI) of 100V/ns. The internal functional isolation between driver A and driver B on the secondary-side (output-side) allows up to 1500V DC  working voltage.

The CA-IS322x family of devices can be configured as dual low-side, dual high-side or half-bridge drivers with programmable dead-time. The enable control (EN pin for the CA-IS3222) and disable control (DIS pin for the  CA-IS3221) allow both driver A and driver B outputs to be quickly set to logic-low, turning off the external power transistor. They also have a default-low output. The default is the state the output assumes when the input is either not powered or is open-circuit. Also, the driver outputs are set to logic-low when the input-side or output-side supply is in  UVLO, or the device is disabled.