The DRV8874-Q1 is an
integrated motor driver with N-channel H-bridge, charge pump, current sensing and proportional output, current regulation, and
protection circuitry. The charge pump improves efficiency by supporting N-channel
MOSFET half bridges and 100% duty cycle driving. The family of devices come in
pin-to-pin RDS(on) variants to support different loads with minimal
design changes.
An internal current mirror
architecture on the IPROPI pin implements current sensing and regulation. This
eliminates the need for a large power shunt resistor, saving board area and reducing
system cost. The IPROPI current-sense output allows a microcontroller to detect
motor stall or changes in load conditions. Using the external voltage reference pin,
VREF, these devices can regulate the motor current during start-up and high-load
events without interaction from a microcontroller.
A low-power sleep mode achieves
ultra-low quiescent current draw by shutting down most of the internal circuitry.
Internal protection features include supply undervoltage lockout, charge pump
undervoltage, output overcurrent, and device overtemperature. Fault conditions are
indicated on nFAULT.
View our full portfolio of brushed motor drivers on ti.com.
The DRV8874-Q1 is an
integrated motor driver with N-channel H-bridge, charge pump, current sensing and proportional output, current regulation, and
protection circuitry. The charge pump improves efficiency by supporting N-channel
MOSFET half bridges and 100% duty cycle driving. The family of devices come in
pin-to-pin RDS(on) variants to support different loads with minimal
design changes.
An internal current mirror
architecture on the IPROPI pin implements current sensing and regulation. This
eliminates the need for a large power shunt resistor, saving board area and reducing
system cost. The IPROPI current-sense output allows a microcontroller to detect
motor stall or changes in load conditions. Using the external voltage reference pin,
VREF, these devices can regulate the motor current during start-up and high-load
events without interaction from a microcontroller.
A low-power sleep mode achieves
ultra-low quiescent current draw by shutting down most of the internal circuitry.
Internal protection features include supply undervoltage lockout, charge pump
undervoltage, output overcurrent, and device overtemperature. Fault conditions are
indicated on nFAULT.
View our full portfolio of brushed motor drivers on ti.com.