RS has a series of PCB-mount variable step-down regulator module ICs from Würth Elektronik; the MagI³C-VDRM modules comprise a fully integrated and low-EMI-noise current-mode DC/DC power supply that includes the switching power stage, passive components and control circuitry in a single low-profile and small-outline package.
Providing high efficiencies and accurate regulated output voltage, the series offers an input voltage range from 6 to 42V DC, output voltages from 0.8 to 24V, and maximum output currents from 1 to 5A, as well as built-in compensation circuitry and soft-start functionality for smooth and safe power up. Delivering stable and low-ripple voltages for components such as microprocessors, DSPs, FPGAs and MCUs and I/O interface applications, typical uses for the MagI³C-VDRM series are Point of Load (POL) DC/DC conversion in system power supplies and in server and datacom/telecom applications, as well as in industrial control, measurement equipment and entertainment equipment markets.
Three devices in the variable-output MagI³C-VDRM series cover 5 to 24V output voltages and respective output currents of 1, 1.5 and 3A; and two more offer 0.8 to 6.0V output voltages with respective output currents of 2 and 5A. In addition to programmable soft-start, variable settings available include output voltage, switching frequency, stand-by mode and adjustable UVLO (under-voltage lockout) protection. The regulators also have on-board circuitry to guard against thermal and electrical damage, including over-temperature, over-current and over-voltage protection, as well as output short-circuit functionality.
The ICs come in a 7-pin TO263-7-EP (Exposed Pad) industrial high-power-density package. The package offers a single exposed power ground (PGND) pad for heat dissipation and thermal performance. In addition, the device’s shielded inductor means low noise characteristics that comply with EN55022 Class B standards, meaning a significantly reduced time required for EMI testing. Operating temperature range is –40 to +125°C (junction to ambient).
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