AMIS30624C6245RG ON Semiconductor, AMIS30624C6245RG Datasheet - Page 31

• Manufacturer Part Number: AMIS30624C6245RG
• Description: IC STEPPER DVR I2C 800MA 32-NQFP
• Manufacturer: ON Semiconductor
• Type: I2C Micro Stepping Motor Driverr

Specifications of AMIS30624C6245RG

• Applications: Stepper Motor Driver, 2 Phase
• Number Of Outputs: 1
• Current - Output: 800mA
• Voltage - Supply: 8 V ~ 29 V
• Operating Temperature: -40°C ~ 165°C
• Mounting Type: Surface Mount
• Package / Case: 32-VSQFP
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 8 V to 29 V
• Supply Current: 800 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 766-1002-2

AMIS-30624
14.3 Motor Driver
14.3.1. Current Waveforms in the Coils
Figure 18 illustrates the current fed to the motor coils by the motor driver in half step mode.
Whereas Figure 19 below shows the current fed to one coil in 1/16
14.3.2. PWM Regulation
In order to force a given current (determined by Irun or Ihold and the current position of the rotor) through the motor coil while ensuring
high energy transfer efficiency, a regulation based on PWM principle is used. The regulation loop performs a comparison of the sensed
output current to an internal reference, and features a digital regulation generating the PWM signal that drives the output switches. The
Ix
Iy
Ix
Iy
Coil Y
Figure 19: Current Waveforms in Motorcoils X and Y in 1/16
Coil Y
Figure 18: Current Waveforms in Motorcoils X and Y in Halfstep Mode
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Coil X
Coil X
th
micro stepping (one electrical period).
th
Microstep mode
PC20051205.1
PC20051123.4
t
t