ADI Launches Switching Regulator with Reduced EMI/EMC Emissions
Published2017.06.30 10:18Analog Devices announced the release of the new LT8609S synchronous step-down switching regulator with 2A (3A peak) and 42V input.
This product adopts the proprietary Silent Switcher® 2 architecture, which is characterized by minimizing the hot loop area using two internal input capacitors and internal BST and INTVCC capacitors.
The LT8609S design significantly reduces EMI/EMC emissions by adopting a design in which stabilized switching edges and internal circuits are coupled to the ground plane, and copper patterns are used instead of bonding wires. Thanks to this improved EMI/EMC performance, it is less affected by board layout, which not only simplifies the design but also reduces risk when using 2-layer PC boards.
The LT8609S's unique design maintains an extremely low dropout voltage of 400mV (at 1.5A) under any conditions, enabling exceptional performance in situations such as automotive cold-crank. Furthermore, with a minimum on-time of just 45ns, it allows for switching from a 16V input to a 1.5V output at a fixed frequency of 2MHz, allowing designers to optimize efficiency and avoid noise-sensitive critical frequency bands.
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