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TI Launches Synchronous Buck Regulator that Eliminates Switch-Node Ringing

Preferred source on GooglePublished2016.07.04 18:12
Eliminating switch node ringing in automotive applications
36V, 2.1MHz regulator product, meeting low EMI and high power density requirements


Texas Instruments (TI) (President and CEO Kent Jeon) announced the introduction of two new 36V, 2.1MHz synchronous buck regulator products.

These regulators can eliminate switch node ringing, provide low electromagnetic interference (EMI) and high power density, and operate under deep drop-out conditions.

The 2.5A LM53625-Q1 and 3.5A LM53635-Q1 regulators are designed for high-voltage DC/DC step-down applications such as automotive infotainment, advanced clusters, ADAS (advanced driver assistance systems), and body power supply systems.



Additionally, the adoption of wettable flank packaging enables optical inspection, reducing manufacturing costs. These step-down regulators utilize TI's WEBENCH® automotive design tools, enabling developers to quickly begin automotive designs.

Switch node ringing is a fundamental problem in all switch mode power supplies. The LM53625-Q1 and LM53635-Q1 regulators reduce parasitic inductance and capacitance, enabling these power solutions to reduce noise and EMI emissions at the system level by up to 15 dB.

This reduces external EMI filtering and printed circuit board (PCB) area, making it easier to meet CISPR 25 automotive EMI standards. Watch the video to learn more about how TI's LM53635-Q1 can address automotive EMI, thermal, and system challenges.

TI offers a comprehensive portfolio of controllers and regulators for automotive systems, delivering power from 0.65 A to 10 A, by adding the new LM53625-Q1 and LM53635-Q1 devices to the recently released LM53600-Q1, LM53601-Q1, LM53602-Q1, LM53603-Q1, and LM5140-Q1 buck converters. All of these devices operate at switching frequencies greater than 2 MHz, provide low IQ, and reduce EMI.
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