Vishay squeezes 35A mosfets and driver into 6x6mm

Vishay has squeezed high-side and low-side 35A mosfets plus a driver into a 6x6mm package, aiming at Intel’s DrMOS specification for point-of-load supplies in PCs, servers and graphics boards.

The SiC769, as it is known, works at frequencies in excess of 1 MHz from an input voltage range of 3 to 16V and delivers up to 35A continuously.

Its integrated mosfets are optimised for output voltages from 0.8 to 2.0V from a nominal input voltage of 12V. However, “the SiC769 can also deliver very high power at a 5V output for ASIC applications”, said Vishay.

DrMOS devices do not contain a voltage regulator, and instead expect a PWM signal from an external regulator.

“The PWM input is compatible with all controllers and especially designed to support controllers with a tri-state PWM output function,” said Vishay.

This said, the internal driver is autonomous enough to enable skip mode operation at light load to improve efficiency.

Adaptive dead time control is also included, as is protection against under-voltage inputs, shoot-through and excessive junction temperature.

Samples and production quantities are available now, with lead times of 10 weeks for larger orders.