DRV841x2 is a high-performance, integrated two-way full-bridge motor driver with advanced protection system.

Thanks to the low RDS(on) and smart gate drive design of H-bridge MOSFET, the efficiency of these motor drivers can reach 97%. This high efficiency supports the use of smaller power supplies and heat sinks, making such devices very suitable for energy-saving applications.

DRV841x2 needs two power supplies, one is 12V for GVDD and VDD, and the other is up to 50V for PVDD. DRV841x2 can operate at switching frequency up to 500kHz, while still maintaining precise control and high efficiency. These devices also have innovative protection systems to protect them from various fault conditions that may damage the system. These protections are short circuit protection, overcurrent protection, undervoltage protection and two-stage overheating protection. DRV841x2 has a current limiting circuit, which can prevent the device from over-current turning off during load transients such as motor start-up. A programmable overcurrent detector can realize adjustable current limit and protection level to meet different motor requirements.

Each half-bridge of DRV841x2 has a unique independent power supply and ground pin. With these pins, current measurement can be provided through external shunt resistors, and multiple motors with different power supply voltage requirements can be supported.

Characteristics of DRV8412
High efficiency power stage with low rds (on) MOSFET (110 mω at TJ = 25 C) (up to 97%).
The working power supply voltage is as high as 52V.
DRV8412 (power supply pad facing down): provides up to 2 × 3A continuous output current (peak value is 2 × 6A) in dual-channel full-bridge mode and up to 6A continuous current (peak value is 12A) in parallel mode.
DRV8432 (power supply pad up): provides up to 2 × 7A continuous output current (peak value is 2 × 12A) in dual-channel full-bridge mode and up to 14A continuous current (peak value is 24A) in parallel mode.
The working frequency of PWM is as high as 500kHz.
Integrated self-protection circuit including undervoltage, overheating, overload and short circuit protection
Programmable cycle-by-cycle current limiting protection
Independent power and ground pins for each half bridge.
Intelligent gate drive and transconductance protection
No external buffers or Schottky diodes are required.