TI's new SWIFTTM converter delivers output currents up to 160A

Texas Instruments today introduced the industry's first new 40-A SWIFTTM DC / DC buck converter that can stack up to four integrated circuits (ICs). The TPS546D24APMBus step-down converter can provide up to 160A output current at an ambient temperature of 85 ° C, which is four times higher than other power integrated circuits on the market. Among the many 40A DC / DC converters, the TPS546D24A is more efficient and can reduce power consumption by 1.5W in high-performance data centers, enterprise computing, medical, wireless infrastructure, and wired network applications.

Reduce power supply size and optimize thermal performance

Solution size and thermal performance are two key considerations for engineers designing power supplies for modern field programmable gate arrays (FPGAs). The TPS546D24A buck converter addresses these two issues with its unique stackability. It has a PMBus interface that provides an optional internal compensation network, which can reduce up to 6 external compensation components on the circuit board, and reduce the size of the entire power solution by more than 10% (that is, 130mm2), thereby achieving more than discrete Phase controllers with higher current FPGAs / application specific integrated circuits (ASICs).

In addition, TPS546D24A has a low thermal resistance of 8.1 ° C / W, which is 13 ° C lower than other DC / DC converters on the market, thereby improving the performance of electronic products (such as baseband units and automated test equipment) in high temperature and harsh environments. reliability.

Improve efficiency at high switching frequencies

The use of a DC / DC converter with a high switching frequency can reduce the footprint of the power supply and facilitate the design of high-bandwidth systems. The TPS546D24A's inductance and capacitance are one-third smaller than similar converters, can achieve a switching frequency of 1.5MHz, and can provide 40A for each integrated circuit. In order to reduce the negative impact of high switching frequency on operating efficiency, the TPS546D24A integrates a 0.9mΩ low-side MOSFET, making it 3.5% more efficient than other DC / DC buck converters on the market.

Meets the stringent voltage accuracy requirements of FPGA power supplies

FPGAs are widely used, but engineers are often surprised at the voltage accuracy required to support FPGA DC voltage rails when designing power supplies for them. The TPS546D24A can achieve an output voltage error of less than 1%, helping engineers more easily meet these stringent voltage tolerance requirements. In addition, its extensive PMBus instruction set and pin multiplexing configurability also allow engineers to achieve more accurate current monitoring in order to provide fault reports in a timely manner and avoid overdesign.