Categories

A sample text widget

Etiam pulvinar consectetur dolor sed malesuada. Ut convallis euismod dolor nec pretium. Nunc ut tristique massa.

Nam sodales mi vitae dolor ullamcorper et vulputate enim accumsan. Morbi orci magna, tincidunt vitae molestie nec, molestie at mi. Nulla nulla lorem, suscipit in posuere in, interdum non magna.

600V IGBT/MOSFET gate driver IC for electric car motor applications

Allegro MicroSystems has launched MOSFET gate driver IC to drive high-voltage MOSFETs controlling power input to brushless DC motors used in hybrid, electric cars/vehicles. The 600V MOSFET supporting gate driver IC is also suggested for 48 V automotive battery systems such as electronic power steering, A/C compressors, fans, pumps and blowers. The A4900 is also offered in a non-automotive version for high voltage industrial and commercial applications.

A4900 features six gate drives to drive N-channel IGBT or power MOSFET switches. The gate drives are configured as three high-voltage high-side drives and three low-side drives. The high-side drives are isolated up to 600 V to allow operation with high bridge (motor) supply voltages. Highside drives use a bootstrap capacitor to provide greater than the supply gate drive voltage needed for N-channel FET’s. Each FET can be controlled with a TTL logic level input compatible with 3.3 V or 5 V logic systems.

A single supply input provides the gate drive supply and the bootstrap capacitor charge source. An internal regulator from the single supply provides the lower internal voltage for the logic circuit. The A4900 provides internal monitors to ensure that the gate-source voltage of both high-side and low-side external FET above 9 V when active.
More eeherald.com

Share

Leave a Reply