STSPIN948TR [STMicroelectronics]

The STSPIN948 is a 4.5 A dual full-bridge driver for brushed DC motors or bipolar stepper motors.

The power stage is designed with high dynamic performance, allowing to achieve high frequency PWM control with precise duty-cycle.

Each full-bridge is totally independent with a current limiter with adjustable threshold and OFF-time with slow or mixed decay selection. Two amplifiers with fixed amplification factor are available for current sensing (using an external shunt resistor).

The adjustable slew-rate guarantees the best trade-off between performances and EMI.

Versatile power stage offers several ways of operation for a high level of flexibility.

The device offers a complete set of protection features including overcurrent, overtemperature, and low bus voltage detection.

• Operating voltage up to 58 V
• Maximum output current up to 4.5 Arms
• Five driving methods with full-bridge and dual half-bridge parallel mode
• R_DS(ON) HS + LS = 0.36 Ω typ.
• Adjustable power MOS slew rate
• Integrated amplifiers with two different embedded current control techniques
• Adjustable OFF-time with slow or mixed decay
• Low consumption standby
• Protections
  • UVLO
  • Overcurrent protection
  • Thermal shutdown