40V mosfet half-bridge in 3.3 x 3.3mm

Author: EIS Release Date: Oct 26, 2020


Vishay has introduced a 40V n-channel mosfet half-bridge for synchronous buck converters and motor drives with low on-resistance and gate charge.

Vishay-SiZ240DT-dual-mosfet-cct

Called SiZ240DT, its two transistors are:

Channel 1 (upper, switch)
8.05mΩ at 10V
12.25mΩ at 4.5 V
6.9nC gate charge (20V at 10A, Vg=4.5V)
48A at 25°C

Channel 2 (lower, rectifier)
8.41mΩ at 10V
13.30mΩ at 4.5V
6.5nC gate charge (20V at 10A, Vg=4.5V)
47A at 25°C

“The dual mosfet is one of the most compact integrated products on the market,” according to the company. “It provides a space-saving solution for motor control in vacuum cleaners, drones, power tools, home automation, office automation and non-implantable medical devices.”

The transistors are said to be optimised for Qds/Qgs ratio to improve switching characteristics, as well as having wire-free internal construction to minimise parasitic inductance, said Vishay, but although Qds and Qgs are in the data sheet, I can find no mention of inductance.