The Californian chip-maker Maxim Integrated Products has developed a
high-voltage regulator for industrial DC-DC converter applications
which, it says, will reduce heat dissipation, improve reliability, cut
space requirements by up to 50% and external component counts by 75%.
The
Max17503 chip, designed specifically for industrial control and
automation applications, is suitable for PLCs, CNC systems and
distributed I/O modules in industrial process control, motor control,
power grid, and building automation applications.
By
integrating two Mosfet switches and eliminating the need for an
external Schottky diode, the chip is claimed to deliver higher power
efficiencies, and to operate 50% cooler than any other industrial HV
DC–DC converter.
The synchronously-rectified DC–DC step-down converter chip
operates from 4.5–60V and delivers output currents up to 2.5A. Maxim
says that the ability to operate at 60V will eliminate the need for
external protection circuitry and extend design margins in harsh
industrial applications.
“Synchronous
rectification in switching regulators at high voltages and currents on a
single chip requires advanced process technology and innovative IC
design,” says Anil Telikepalli, Maxim’s director of business management.
“As the first company to bring synchronous rectification to HV
applications, Maxim delivers unparalleled power efficiency and size
advantage to industrial customers who can now leapfrog their
competition.”
Prices for the new chip will start at less than $2 in quantities of 1,000 or more.
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