Step-down regulators with fully integrated circuitry within moulded package and metal substrate

Stocked by Digi-Key, the VDRM family from Wurth Electronics are step-down or ‘buck’ regulators that contain the control circuitry, power MOSFETs, the output inductor, and several discrete resistors and capacitors within a moulded package and metal substrate. The VDRM series, of the MagI³C power modules family, comprises a fully integrated, current mode DC-DC power supply with the switching power stage, control circuitry, and passives all in one package. These devices also feature built-in compensation circuitry and a soft-start feature for a smooth, safe power up. The VDRMs are available in three package sizes: TO263-7EP, BQFN-39, and BQFN-41. The TO263-7EP is an industrial, high power density package with a low profile and a small outline. The VDRM series offers high efficiency and delivers up to 5A of output current with accurate regulated output voltages. It operates from an input voltage of 6V to 42V. They are available in an innovative package that enhances thermal performance and allows for hand or machine soldering. The VDRM regulators also have on-board protection circuitry to guard against thermal and electrical damage. Thermal shut-down, over-current, over-voltage, and under-voltage protections safeguard the regulator and include a short-circuit protection. The small BQFN package is easy to solder onto a printed circuit board where a low profile is demanded. The MagI³C power module requires as few as five external components, and eliminates loop compensation and the magnetics part selection process. This package is ideal for powering a wide area of systems and ICs.