Texas Instruments DRV8251 4.1A Brushed DC Motor Driver

Texas Instruments DRV8251 4.1A Brushed DC Motor Driver

1.093
Views
0 Comments

Texas Instruments DRV8251 4.1A Brushed DC Motor Driver is an integrated motor driver with N-channel H-bridge, charge pump, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half-bridges and 100% duty cycle driving. The DRV8251 implements a current regulation feature by comparing the analog input VREF and the voltage across a current-sense shunt resistor on the ISEN pin. The ability to limit current can significantly reduce large currents during motor startup and stall conditions.

A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most internal circuitry. Internal protection features include supply undervoltage lockout, output overcurrent, and device overtemperature. The Texas Instruments DRV8251 is part of a family of devices that comes in pin-to-pin, scalable RDS(on), and supply voltage options to support various loads and supply rails with minimal design changes.

Features

  • N-channel H-bridge brushed DC motor driver
  • 4.5V to 48V operating supply voltage range
  • Pin-to-pin, RDS(on), voltage, and current sense/regulation variants (external shunt resistor and integrated current mirror)
    • DRV8870: 6.5V to 45V, 565mΩ, shunt
    • DRV8251: 4.5V to 48V, 450mΩ, shunt
    • DRV8251A: 4.5V to 48V, 450mΩ, mirror
    • DRV8231: 4.5V to 33V, 600mΩ, shunt
    • DRV8231A: 4.5V to 33V, 600mΩ, mirror
  • High output current capability: 4.1A Peak
  • PWM control interface.
  • Supports 1.8V, 3.3V, and 5V logic inputs
  • Integrated current regulation
  • Low-power sleep mode
    • <1µA at VVM = 24V, TJ = 25°C
  • Small package and footprint
  • 8-Pin HSOP with PowerPAD™, 4.9mm × 6.0mm
  • Integrated protection features
    • VM undervoltage lockout (UVLO)
    • Latched overcurrent protection (OCP)
    • Thermal shutdown (TSD)

Block Diagram

more information: https://www.ti.com/product/DRV8251

About mixos

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

view all posts by admin
Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments
Archives