32V/3.5A High Power Density Synchronous Buck Converters for Industrial POL Applications with Unique Noise Reduction FeaturesDecember 17, 2020 by Hailey Stewart
This article highlights Diodes Incorporated AP63356 and AP63357, 3.5A, synchronous buck converters with a 3.8V to 32V input voltage with power-good (PG) and external compensation.
Diodes Incorporated announces the AP63356 and AP63357, 3.5A, synchronous buck converters with a 3.8V to 32V input voltage with power-good (PG) and external compensation.
Image courtesy of Diodes Incorporated
Their 74mΩ high-side and 40mΩ low-side power MOSFETs provide high-efficiency step-down DC-DC conversion. For optimized light-load efficiency, the AP63357 operates in Pulse Frequency Modulation (PFM) with up to 86% efficiency at 5mA load. For the lowest output voltage ripple, the AP63356 operates in Pulse Width Modulation (PWM) with fixed 450kHz frequency, regardless of load.
Both devices have a proprietary ringing resistant switching-node gate driver without sacrificing the switching rise and fall times, reducing high-frequency radiated EMI noise. The devices feature Frequency Spread Spectrum (FSS) to further reduce EMI.
Both devices have the same pinout in the high-power density V-DFN3020-13 package, which has an optimized pin configuration to simplify PCB layout and reduces trace inductances.
About Diodes Incorporated
Diodes Incorporated is a leading global manufacturer and supplier of high-quality application-specific standard products within the broad discrete, logic, analog and mixed-signal semiconductor markets. Diodes serve the consumer electronics, computing, communications, industrial, and automotive markets. Diodes’ products include diodes, rectifiers, transistors, MOSFETs, protection devices, function-specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors, power management devices, including LED drivers, AC-DC converters and controllers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers.