Solutions limiting EMI in automotive and industrial designs

Mouser has a new solutions page from Analog Devices and Coilcraft developed to assist designers to address EMI concerns in automotive and industrial applications. The new page offers a mixture of reference material and paired electronic components to help designers in delivering lower EMI using a combination of Analog Devices’ Silent Switcher 2 LT8640S/LT8643S/LT8650S synchronous step-down regulators and Coilcraft’s power inductors. Featuring Analog Devices’ second-generation Silent Switcher architecture created to minimise EMI emissions, their Silent Switcher 2 LT8640S, LT8643S, and LT8650S synchronous step-down regulators deliver high efficiency at high switching frequencies using a combination of bypass capacitors, a ground plane, copper pillars, and other components to optimise all the fast current loops. The 42V, 6A regulators offer a 2.5µA quiescent current and up to 96% efficiency at 1MHz, and provide fast, clean, and low-overshoot switching edges that enable high-efficiency operation and step-down ratios even at high switching frequencies. When paired with the regulators, Coilcraft’s power inductors can reduce EMI in harsh and noisy environments even further. Their XFL5030 series shielded power inductor features a particularly low DC resistance of only 2.15 milliohms. With excellent current handling up to 11.5A, soft saturation, and composite construction to minimise audible noise, the devices are perfect for high-frequency applications. The series high-current shielded power inductors provide particularly low DC resistance and ultra-low AC losses for high switching frequencies of 2MHz to 5MHz. They offer excellent current handling with soft saturation characteristics to resist high current spikes and produce an inductance range from 0.15µH-3.3µH. Both the XFL5030 and the XEL6030 series of devices satisfy the AEC-Q200 Grade 1 automotive specification and are RoHS-compliant and halogen-free.