You're trying to achieve improved efficiency across a wide industrial voltage range -- and in ever-shrinking industrial equipment design. Have faith. It just got easier.
Maxim Integrated Products has rolled out a high-input-voltage regulator that cuts space by up to 50 percent and component count by 75 percent, integrates two MOSFET switches, and gets rid of an external Schottky diode. The device is 50 percent cooler than asynchronous solutions on the market. This is a critical feature, because smaller designs don't have the benefit of fans and heat sinks. There's just no room.
The MAX17503 synchronously rectified DC-DC stepdown converter integrates dual MOSFETs, offers high efficiency operating at 4.5-60 V, and delivers up to 2.5 A of output current. There's pulse-frequency modulation for improved efficiency at light loads, and the switching frequency range is 200 kHz to 2.2 MHz.
Designed for industrial control and automation apps, the device targets programmable logic controllers, process variable transmitters, CNC, and distributed I/O modules in industrial process control, motor control, power grid, and building automation settings. The converter is available now in 20-pin, 4mm x 4mm TQFN packaging. Pricing starts at $1.94 for 1,000 units.
There are also evaluation kits available preset to 3.3 V or 5 V. The kit features adjustable input under-voltage lockout, adjustable soft start, open-drain active-low reset signal, and external frequency synchronization.