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DC-DC step-down converter operates from 4.5-60V

Posted: 26 Sep 2013     Print Version  Bookmark and Share

Keywords:Maxim Integrated Products  step-down converter  voltage regulator  MAX17503  MOSFET 

Maxim Integrated Products Inc. has announced the MAX17503 synchronously-rectified DC-DC step-down converter that allows system designers to achieve more efficiency across a wide industrial voltage range. By integrating two MOSFET switches and eliminating an external Schottky diode, the device offers higher power efficiency, operating 50 per cent cooler than any other industrial high-voltage DC-DC converter.

According to the company, the MAX17503 operates from 4.5-60V and delivers up to 2.5A output current. The device also saves up to 50 per cent space and reduces component count by 75 per cent.

Industrial equipment has been shrinking with no heatsinks or fans. System designers also struggle to secure enough design margins against input voltage transients to meet fail-safe standards. According to the company, the MAX17503 provides the widest input operating voltage range, significantly reduces heat dissipation and improves reliability. Designers with widely varying loads can use pulse-frequency modulation (PFM) for enhanced efficiency at light load currents. Specifically designed for industrial control and automation applications, the MAX17503 is geared for programmable logic controllers (PLCs), process variable transmitters (PVTs), computerized numerical control (CNC), and distributed I/O modules in industrial process control, motor control, power grid and building automation applications.

Available in a 20-pin, 4 x 4mm TQFN package, and specified over the -40°C to 125°C temperature range, the MAX17503 can be had for Rs.122.01 ($1.94) (1000-up, FOB USA).

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