ZHCSME3 November 2020 TPS27SA08
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Device Summary Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameter Measurement Information
-
9 Detailed Description
- 9.1 Overview
- 9.2 Functional Block Diagram
- 9.3
Feature Description
- 9.3.1 Protection Mechanisms
- 9.3.2 Diagnostic Mechanisms
- 9.4 Device Functional Modes
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
10.1 Application Information
With the ground protection network, the device ground will be offset relative to the microcontroller ground.
Figure 10-1 System DiagramTable 10-1 Recommended External Components
| COMPONENT | TYPICAL VALUE | PURPOSE |
|---|---|---|
| RPROT | 15 kΩ | Protect microcontroller and device I/O pins |
| RSNS | 1 kΩ | Translate the sense current into sense voltage |
| RPU | 10 kΩ | Provide pull-up source for open-drain output |
| CSNS | 100 pF - 10 nF | Low-pass filter for the ADC input |
| RGND | 4.7 kΩ | Stabilize GND potential during turn-off of inductive load |
| DGND | BAS21 Diode | Protects device during reverse supply |
| CVBB | 220 nF to Device GND | Filtering of voltage transients (for example, ESD, ISO7637-2) and improved emissions |
| 100 nF to Module GND | Stabilize the input supply and filter out low frequency noise. | |
| COUT | 22 nF | Filtering of voltage transients (for example, ESD, ISO7637-2) |