Pololu G2 High-Power Motor Driver 24v21

This discrete MOSFET H-bridge motor driver enables bidirectional control of a high-power brushed DC motor. The small 1.3″ × 0.8″ board supports a wide operating voltage range of 6.5 V to 40 V and is efficient enough to deliver a continuous 21 A without a heat sink. Additional features of this second-generation (G2) driver include reverse-voltage protection and basic current sensing and current limiting functionality.

Features:

• H-bridge motor driver: can drive one bidirectional brushed DC motor
  
• Operating voltage: 6.5 V to 40 V (absolute maximum)
  
• Output current: 21 A continuous
  
• Inputs compatible with 1.8 V, 3.3 V, and 5 V logic
  
• PWM operation up to 100 kHz
  
• Current sense output proportional to motor current (approx. 20 mV/A; only active while H-bridge is driving motor)
  
• Active current limiting (chopping) with a default threshold of 50 A (can be adjusted down)
  
• Reverse-voltage protection
  
• Undervoltage lockout
  
• Short circuit protection
  
• Dimensions: 1.3″ x 0.8″
  
• Two 0.086″ mounting holes for #2 or M2 screws

Specifications:

• Motor channels: 1
  
• Minimum operating voltage: 6.5 V
  
• Maximum operating voltage: 40 V
  
• Continuous current per channel: 21 A
  
• Current sense: 0.02 V/A
  
• Maximum PWM frequency: 100 kHz
  
• Minimum logic voltage: 1.8 V
  
• Maximum logic voltage: 5.5 V
  
• Reverse voltage protection?: Yes
• Weight: 5 g

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