Equipped with EMI compliance and high reliability for industrial and automotive power supplies

Texas Instruments (TI) announced two families of wide VIN synchronous DC/DC buck regulators with electromagnetic interference (EMI) and thermal performance.

The highly integrated 5A/6A LM73605/6 and 2.5A/3.5A LM76002/3 step-down voltage converters simplify the process of achieving EMI compliance and high reliability for rugged industrial and automotive power supplies with optimized pinouts and industry-leading temperature coefficients.

The 3.5V to 36V LM73605/6 and 3.5V to 60V LM76002/3 buck regulators meet and exceed stringent CISPR 25 Class 5 automotive electromagnetic compatibility (EMC) requirements. These regulators' programmable output switching frequency can be set above the AM band to eliminate AM band interference and reduce the size and cost of the output filter, or below the AM band to optimize efficiency.

The compact QFN package, featuring a unique wettable flank design, offers an extremely low temperature coefficient of 7.1ºC/W (ΨJB), enhancing reliability and enabling post-solder optical inspection, simplifying manufacturing. Furthermore, the optimized package pin layout enhances board design flexibility and improves heat sinking, minimizing conducted and radiated emissions.

The new DC/DC converter offers an operating input voltage range of up to 60 V for nominal 12 V, 24 V or 48 V systems such as remote radios, ultrasound scanners, motor drives, inverters and servo controllers. The regulator delivers up to 92% full-load efficiency at 12VIN, 5VOUT, and a 500kHz switching frequency. An ultra-low quiescent current of 15µA improves light-load efficiency.