CSD95430 Synchronous Buck NexFET™ Power Stage

Texas Instruments CSD95430 Synchronous Buck NexFET™ Power Stage is a highly optimized design for use with a high-power, high-density synchronous buck converter. This device integrates the driver IC and power MOSFETs to complete the power stage switching function. This combination produces high-current, high-efficiency, and high-speed switching capability in a small 5mm × 6mm outline package. The power stage also integrates accurate current sensing and temperature sensing functionality to simplify system design and improve accuracy. In addition, the PCB footprint has been optimized to help reduce design time and simplify the completion of the overall system design. This power stage features an active current balance feature, allowing multiple power stages to be paralleled off a single PWM input. This feature enables phase multiplication for very high current applications without needing a similarly high phase count controller. The active current balance of the Texas Instruments CSD95430 ensures that the multiplied phases share current evenly, so no significant derating of current capability is needed when paralleling phases.