Unique DC-DC buck converter features innovative control topology

Texas Instruments has introduced what is claimed to be the industry’s first 16V input, 40A synchronous DC-DC buck converter with an internally compensated ACM control topology supporting frequency synchronization. The company’s TPS543C20 SWIFT converter provides enhanced efficiency by integrating its latest generation of low resistance high and low-side MOSFETs into a thermally efficient small-footprint package. Designers can stack two converters side by side to drive loads up to 80A for processors in space-constrained and power-dense applications in various markets, including wired and wireless communications, enterprise and cloud computing, and data storage systems. The unique internally compensated ACM control topology with fast transient response maintains stability over a wide range of input and output voltages. What makes ACM different is that it is an emulated peak-current-mode control topology that internally generates a ramp with the ability to dynamically adjust for stability over a wide range of operating switching frequencies. This provides the best of both traditional fixed frequency for low noise operation and COT control for fast transient without external compensation.