Texas Instruments Evaluation Module for DRV8842 DRV8842EVM DRV8842EVM 데이터 시트
제품 코드
DRV8842EVM
The Windows Application
Figure 3. DRV8840 Tab
On the CPG004 DRV88xx EVM Windows Application there are two tabs usable with the CPG005 based
EVMs. They are very similar and refer to the differences in the two devices, namely the ENABLE/PHASE
interface and the IN1/IN2 interface. Everything else will operate in the same fashion.
EVMs. They are very similar and refer to the differences in the two devices, namely the ENABLE/PHASE
interface and the IN1/IN2 interface. Everything else will operate in the same fashion.
All the control signals needed to control motor enablement (ENABLE or INx), direction of rotation (PHASE
or the respective combination of the INx pins), current control (through VREF) and PWM control for both
enablement and direction control signals are made available.
or the respective combination of the INx pins), current control (through VREF) and PWM control for both
enablement and direction control signals are made available.
Access to the DAC responsible of generating the VREF analog voltage is achieved by moving a simple
slider. A label offers information on what this reference voltage should be on a scale ranging from 0 V to
2.5 V.
slider. A label offers information on what this reference voltage should be on a scale ranging from 0 V to
2.5 V.
Similar sliders allow the control of PWM Duty Cycle on the ENABLE and PHASE pins (IN1 and IN2 on the
DRV8842). This will allow for the control of both DC motor speed and direction.
DRV8842). This will allow for the control of both DC motor speed and direction.
5
SLVU410
–
April 2011
CPG005_DRV88xx Evaluation Modules
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2011, Texas Instruments Incorporated