The DRV841x2 are high-performance, integrated dual full-bridge
motor driver with an advanced protection system.
Because of the low RDS(on) of the H-Bridge MOSFETs and
intelligent gate drive design, the efficiency of these motor drivers can be up to 97%. This high
efficiency enables the use of smaller power supplies and heatsinks, and the devices are good
candidates for energy-efficient applications.
The DRV841x2 requires two power supplies, one at 12 V for GVDD and VDD, and another up
to 50 V for PVDD. The DRV841x2 can operate at up to 500-kHz switching frequency while still
maintaining precise control and high efficiency. The devices also have an innovative protection
system safeguarding the device against a wide range of fault conditions that could damage the
system. These safeguards are short-circuit protection, overcurrent protection, undervoltage
protection, and two-stage thermal protection. The DRV841x2 has a current-limiting circuit that
prevents device shutdown during load transients such as motor start-up. A programmable overcurrent
detector allows adjustable current limit and protection level to meet different motor
The DRV841x2 has unique independent supply and ground pins for each half-bridge. These
pins make it possible to provide current measurement through external shunt resistor and support
multiple motors with different power supply voltage requirements.
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