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Power FET/IGBT drivers in half- or full-bridge at 600V

Power FET/IGBT drivers in half- or full-bridge at 600V

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By Graham Prophet



Target applications include driving motors in white goods, industrial automation systems and battery-operated vehicles such as eBikes and drones. They are also suited for power supplies above 600W and inverters in fuel cell, solar and wind power applications.

 

A floating high-side driver enables bootstrap operation up to 600V. This allows these devices to be used on the high-voltage rails commonly found in motor drives and power supplies. A high peak-current drive capability ensures the MOSFET or IGBT can switch quickly, delivering greater efficiency under high frequency operation. Inputs that are logic-compatible down to 3.3V further simplify the interface between the controller and the power switches.

 

To protect the MOSFET/IGBT from shoot-through, all devices have matched delays and the half-bridge drivers feature a pre-set internal dead time. Additional self-protection features include Schmitt inputs to avoid false triggering, a gate drive that is tolerant to negative transients arising from high dV/dt switching, and under-voltage lockout (UVLO) to avoid malfunction under low supply voltage conditions.

 

The DGD21xx series are supplied in SO-8 and SO-16 packages, providing pin-compatibility with other sources.

 

Diodes; www.diodes.com

 

 

 

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