Wide VIN controller features industry's highest 65V operation

Texas Instruments (TI) has introduced a 2.2MHz, dual-channel synchronous buck converter with a novel set of features designed to significantly reduce electromagnetic interference (EMI) and high-frequency noise in high-voltage DC-DC step-down applications such as automotive infotainment and high-end cluster power-supply systems. The LM5140-Q1 controller includes dual outputs with phase interleaving and is offered in wettable flank packaging that speeds manufacturing. Together with TI's WEBENCH Automotive Design tool, the LM5140-Q1 enables engineers to get their automotive designs to market faster. Key features : 1 - Wide 3.8-V to 65-V operating range handles start-stop and load-dump conditions for 12-V/24-V lead-acid and emerging 48-V Lithium-ion automotive batteries 2 - Offers 2.2-MHz operation with external synchronization capability moves switching noise above the sensitive AM band, eliminating the need for frequency hopping. 3- Novel, adjustable gate-drive slew-rate control reduces EMI emissions by up to 10 dB with less than a 1 percent reduction in efficiency, which reduces external EMI filtering, saves printed circuit board (PCB) area, and simplifies compliance with CISPR 25 automotive EMI requirements. Watch the video and read the blog post on how to use slew-rate control for EMI reduction. 4 - Low 35uA quiescent current (IQ) in standby (one channel operating with no load) extends battery life in 'always on' applications. 5 - Wettable flank packaging enables post-solder visual inspection to speed manufacturing. The LM5140-Q1 joins the recently released LM53600-Q1, LM53601-Q1, LM53602-Q1 and LM53603-Q1 buck converters to create a complete family of controllers and converters designed for automotive systems that draw from less than 1A of power to more than 10A. All devices feature greater than 2MHz switching frequency, low operating IQ and EMI reduction features, says the company. The LM5140-Q1 uses external metal-oxide semiconductor field-effect transistors (MOSFETs) to support up to 10A dual-channel loads for high-end infotainment systems and other noise-sensitive systems. The LM53600-Q1 and LM53601-Q1 support 650mA and 1A load current, respectively, for emerging advanced driver assistance (ADAS) systems. The LM53602-Q1 and LM53603-Q1 deliver 2A and 3A loads, respectively, for higher-current ADAS and infotainment systems. The LM5140-Q1 is packaged in an 8-pin, 6mm x 6mm x 0.9mm very thin quad flat no-lead (VQFN) package. Also available are the LM5140-Q1 evaluation module with which users can download the LM5140-Q1 quick-start DC-DC synchronous buck converter design tool.