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Half Bridge

The L638xE and the brand new smartDRIVE ™ L639x are the two high-voltage gate driver families that are leading the industrial market, from home appliances to HVAC systems, from pumps and fans to industrial drives.

They are based on ST’s 600 V technology with embedded high-voltage bootstrap diode, providing a high dV/dt immunity of ±50 V/ns over the full temperature range. The switching times are 50 ns rise and 30 ns fall with a 1 nF load. The inputs are provided with CMOS/TTL Schmitt trigger circuits, pull-down resistor and shutdown function. Other protection functions are deadtime setting, undervoltage lockout and clamping on VCC.


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