New dual full-bridge PWM motor driver IC
Allegro MicroSystems Europe has a new 40V dual full-bridge driver capable of driving two DC motors with outputs rated up to 3.2A. Their A5995 device includes fixed off-time pulse-width modulation (PWM) regulators for current control. Each DC motor can be controlled in forward, reverse, coast and brake modes with industry standard PHASE and ENABLE inputs. Fast or slow PWM current decay is selected via the MODE input.
This new device is targeted at the consumer, industrial and office automation markets with end applications that include, laser, inkjet and label printers, copiers, vending, robot vacuums, and ATM machines.
Protection features include thermal shutdown with hysteresis, undervoltage lockout (UVLO), crossover current, and overcurrent protection. Low current sleep mode is included to improve efficiency.
The device is supplied in a leadless 6mm × 6mm × 0.9mm, 36-pin QFN package with exposed power tab for enhanced thermal performance. The package is lead (Pb) free, with 100% matt-tin leadframe plating.