ZHCSND1A November 2020 – May 2022 DRV8434
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 規格
- 7 詳細說明
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
- RGE|24
訂購信息
7.3.4 Controlling VREF with an MCU DAC
In some cases, the full-scale output current may need to be changed between many different values, depending on motor speed and loading. The voltage of the VREF pin can be adjusted in the system to change the full-scale current.
In this mode of operation, as the DAC voltage increases, the full-scale regulation current increases as well. For proper operation, the output of the DAC must not exceed 3.3 V.
Figure 7-3 Controlling VREF with a DAC ResourceThe VREF pin can also be adjusted using a PWM signal and low-pass filter.
Figure 7-4 Controlling VREF With a PWM Resource