First 65V synchronous step-down converter with Fly-Buck capability

Introduced as the industry’s first 65V synchronous step-down converter that provides isolated bias supplies up to 15W, without the need for an opto-coupler, Texas Instruments (TI) has unveiled the LM5160A. As part of TI’s innovative Fly-Buck power portfolio, the LM5160A improves power density and addresses higher power needs more efficiently and reliably in industrial and automotive applications, such as three-phase AC motor drives, programmable logic controllers (PLCs), smart metering, renewable energy or grid infrastructure, factory automation, power over Ethernet (POE) IP cameras and electric vehicles. The LM5160A converter features a constant on-time control that requires no loop compensation and supports high step-down ratios with fast transient response. The innovative converter, which supports a wide-input voltage of 4.5V to 65V, can generate positive and negative bias-supply rails in non-isolated designs, or single and multiple isolated outputs, while minimizing solution size and simplifying the design compared to traditional fly-back solutions. Used in conjunction with award-winning WEBENCH online design tools, the LM5160A speeds time to market of high-power DC-DC designs, says the company.