ZHCSQT3K October 2009 – January 2022 DRV8824
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Layout
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
封裝選項
請參考 PDF 數據表獲取器件具體的封裝圖。
機械數據 (封裝 | 引腳)
- RHD|28
- PWP|28
散熱焊盤機械數據 (封裝 | 引腳)
訂購信息
9.1 Bulk Capacitance
Bulk capacitance sizing is an important factor in motor drive system design. It depends on a variety of factors including:
- Type of power supply
- Acceptable supply voltage ripple
- Parasitic inductance in the power supply wiring
- Type of motor (brushed DC, brushless DC, stepper)
- Motor startup current
- Motor braking method
The inductance between the power supply and motor drive system limits the rate current can change from the power supply. If the local bulk capacitance is too small, the system responds to excessive current demands or dumps from the motor with a change in voltage. The designer must size the bulk capacitance to meet acceptable voltage ripple levels.
The data sheet generally provides a recommended value, but system-level testing is required to determine the appropriate-sized bulk capacitor.
Figure 9-1 Example Setup of Motor Drive System With External Power Supply