TEXAS Instruments has introduced the industry’s first 65V synchronous step-down converter which provides isolated bias supplies up to 15W without needing an opto-coupler.
The LM5160A step-down converter improves power density and addresses the need for increased reliability and efficient performance at higher power levels usually found 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 converter 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 the WEBENCH online design tools, the LM5160A speeds time to market of high-power DC/DC designs.
Key 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.
