Global Sources
EE Times-India
Stay in touch with EE Times India
 
EE Times-India > Amplifiers/Converters
 
 
Amplifiers/Converters  

DMOS PWM motor driver suits industrial apps

Posted: 03 Jan 2007     Print Version  Bookmark and Share

Keywords:Allegro MicroSystems  DMOS  PWM motor driver  DC motors  A3995 

Allegro MicroSystems Inc. has announced a DMOS full-bridge PWM motor driver designed to control two DC motors at currents up to 2.4A. Capable of drive voltages up to 36 V, the Allegro A3995 includes two independent fixed off-time PWM current regulators that operate in either fast or slow decay mode, determined by the MODE input. This new motor driver is targeted at the office automation and industrial markets.

Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. PHASE, ENABLE, and MODE inputs are provided for use in controlling the speed, torque, direction, and brake and coast functions of a DC motor. Protection features include thermal shutdown with hysteresis, undervoltage lockout (UVLO), and crossover current protection. Special power-up sequencing is not required.

Allegro's 3995 is supplied in a lead (Pb) free 36L QFN package with exposed power tab for enhanced thermal dissipation. It has a 6-by-6mm footprint and 0.90mm nominal height.




Comment on "DMOS PWM motor driver suits industri..."
Comments:  
*  You can enter [0] more charecters.
*Verify code:
 
 
Webinars

Seminars

Visit Asia Webinars to learn about the latest in technology and get practical design tips.

 

Go to top             Connect on Facebook      Follow us on Twitter      Follow us on Orkut

 
Back to Top