Buck controllers (external switch)
Achieve high reliability in high-power, thermally-demanding applications
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Select by input voltage range
Battery, 3.3 V
Buck controllers that typically take an Input voltage from batteries, supercapacitors (2.7 V or higher) or PCI Express connectors (3.3 V).
12 V
Buck controllers commonly found in automotive, server, communication systems or a supercapacitor output found in storage and UPS applications.
19 V or 24 V
Buck controllers for industrial and automotive systems with nominal 24-V input rails or PCB systems with a nominal 19-V input rail.
48 V
Buck controllers designed for 48-V input buses found in industrial, automotive and communications applications.
Multiphase
Multiphase buck-controller applications typically involve high-output current, low-output voltage and tight voltage regulation required for ASIC, FPGA, DDR, DSP and CPU core rails.
New products
80-V automotive synchronous buck DC/DC controller with ultra-low IQ and integrated active EMI filter
12-phase, step-down, digital multiphase controller with SVI3 and PMBus for AMD platform
Eight-phase, step-down, digital multiphase controller with SVI3 and PMBus for AMD platform
Automotive, 3.5-V to 42-V low-Iq, dual output, stackable synchronous buck DC-DC controller
Automotive, 3.5-V to 65-V low-IQ, dual output, stackable synchronous buck DC-DC controller
Power trends
Low EMI
Mitigating buck converter EMI is a major challenge for many power supply designers. Devices with built-in EMI reduction technologies save design time and headaches and help you comply with difficult standards like CISPR 25 Class-5. Take a look at our portfolio below for some of the latest and best DC/DC step-down controllers for excellent EMI performance.
How to reduce EMI and shrink power-supply size with an integrated active EMI filter
Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout
Reducing filter size and cost with an active EMI filter
Featured products for low EMI
Low quiescent current (IQ)
DC/DC buck switching regulators with ultra-low standby quiescent current increase light-load efficiency and extend battery life in portable and battery-operated applications. Find some of the lowest IQ devices in our buck controller portfolio below.