Texas Instruments (TI) today introduced the industry's first 65-V synchronous step-down converter that provides isolated bias supplies up to 15 W – without the need for an opto-coupler. 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 4.5 V to 65 V, 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 flyback solutions. Used in conjunction with award-winning WEBENCH online design tools, the LM5160A speeds time to market of high-power DC/DC designs.
The newest Fly-Buck converter joins TI's proven DC/DC portfolio with industry-leading, high-performance power conversion. TI also offers several devices with its Fly-Buck architecture, including the LM5017 converter, which supports input voltages up to 100 V. Watch a video on how to design with Fly-Buck topology and read a blog about new reference designs.
Features:
－ The 4.5- to 65-V input voltage range allows the converter to efficiently operate in harsh transient conditions without the need for input clamp circuits, resulting in higher reliability.
－ Constant on-time control provides fast transient response and results in lower component count.
－ Programmable soft start reduces in-rush currents when powering up into heavy loads or large capacitance.
－ Internal ±1 percent voltage reference and VOUT error correction improve accuracy across line, load and temperature.
