ZHCS138C August 2011 – March 2016 DRV8302
PRODUCTION DATA.
- 1 特性
- 2 應用范圍
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
10 Layout
10.1 Layout Guidelines
Use these layout recommendations when designing a PCB for the DRV8302.
- The DRV8302 makes an electrical connection to GND through the PowerPAD. Always check to ensure that the PowerPAD has been properly soldered (See the application report, PowerPAD™ Thermally Enhanced Package application report, SLMA002).
- PVDD bypass capacitors should be placed close to their corresponding pins with a low impedance path to device GND (PowerPAD).
- GVDD bypass capacitor should be placed close its corresponding pin with a low impedance path to device GND (PowerPAD).
- AVDD and DVDD bypass capacitors should be placed close to their corresponding pins with a low impedance path to the AGND pin. It is preferable to make this connection on the same layer.
- AGND should be tied to device GND (PowerPAD) through a low impedance trace/copper fill.
- Add stitching vias to reduce the impedance of the GND path from the top to bottom side.
- Try to clear the space around and underneath the DRV8302 to allow for better heat spreading from the PowerPAD.
10.2 Layout Example
Figure 12. Top and Bottom Layer Layout Schematic