Mini VNH2SP30 Stepper Motor Driver Monster Moto Shield module For Arduino 30AProduct DescriptionMaximum PWM frequency: 20 kHz.MOSFET on-resistance: 19 mΩ (per leg).Practical Continuous Current: 14A.Undervoltage and Overvoltage and Thermal Shutdown.CJRSLRB? 30A Mini VNH2SP30 Stepper Motor Driver Monster Moto Shield module For Arduino.Voltage max: 16V.Maximum current rating: 30 A.Practical Continuous Current: 14 A.Current sensing available to Arduino analog pin.MOSFET on-resistance: 19 mΩ (per leg).Maximum PWM frequency: 20 kHz.Thermal Shutdown.Undervoltage and Overvoltage shutdown.Size:55*28*12(L*W*H).Weight:9g.Description:This is essentially a ramped up version of our Ardumoto motor driver shield. For this monster shield we've replaced the L298 H-bridge with a pair of VNH2SP30 full-bridge motor drivers. We've also beefed up the support circuitry so this board is capable of driving a pair of high-current motors! The VIN and motor out are pitched for our 5mm screw terminals (not included), making it easy to connect larger gauge wires.Note:When using this board in extreme high-demand applications it may be necessary to improve thermal performance with a heat-sink or fan and to solder the wires directly to the board instead of using a screw terminal (in addition to the myriad other complications present in a high-current system) However, when using the board at currents up to 6A the chips will barely become noticeably warm.