ZHCSR67 July 2020 DRV8353M
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Absolute Maximum Ratings
- 8 ESD Ratings
- 9 Recommended Operating Conditions
- 10Thermal Information
- 11Electrical Characteristics
- 12SPI Timing Requirements
-
13Detailed Description
- 13.1 Overview
- 13.2 Functional Block Diagram
- 13.3
Feature Description
- 13.3.1 Three Phase Smart Gate Drivers
- 13.3.2 DVDD Linear Voltage Regulator
- 13.3.3 Pin Diagrams
- 13.3.4 Low-Side Current-Shunt Amplifiers
- 13.3.5
Gate Driver Protective Circuits
- 13.3.5.1 VM Supply and VDRAIN Undervoltage Lockout (UVLO)
- 13.3.5.2 VCP Charge-Pump and VGLS Regulator Undervoltage Lockout (GDUV)
- 13.3.5.3 MOSFET VDS Overcurrent Protection (VDS_OCP)
- 13.3.5.4 VSENSE Overcurrent Protection (SEN_OCP)
- 13.3.5.5 Gate Driver Fault (GDF)
- 13.3.5.6 Overcurrent Soft Shutdown (OCP Soft)
- 13.3.5.7 Thermal Warning (OTW)
- 13.3.5.8 Thermal Shutdown (OTSD)
- 13.3.5.9 Fault Response Table
- 13.4 Device Functional Modes
- 13.5 Programming
- 13.6
Register Maps
- 13.6.1 Status Registers
- 13.6.2
Control Registers
- 13.6.2.1 Driver Control Register (address = 0x02h)
- 13.6.2.2 Gate Drive HS Register (address = 0x03h)
- 13.6.2.3 Gate Drive LS Register (address = 0x04h)
- 13.6.2.4 OCP Control Register (address = 0x05h)
- 13.6.2.5 CSA Control Register (address = 0x06h)
- 13.6.2.6 Driver Configuration Register (address = 0x07h)
-
14Application and Implementation
- 14.1 Application Information
- 14.2
Typical Application
- 14.2.1
Primary Application
- 14.2.1.1 Design Requirements
- 14.2.1.2 Detailed Design Procedure
- 14.2.1.3 Application Curves
- 14.2.1
Primary Application
- 15Power Supply Recommendations
- 16Layout
- 17Device and Documentation Support
- 18Mechanical, Packaging, and Orderable Information
13.3.4.2 Unidirectional Current Sense Operation (SPI only)
On the DRV8353M SPI devices, use the VREF_DIV bit to remove the VREF divider. In this case the shunt amplifier operates unidirectionally and SOx outputs an analog voltage equal to the voltage across the SPx and SNx pins multiplied by the gain setting (GCSA). Use Equation 4 to calculate the current through the shunt resistor.
Equation 4. 
Figure 13-24 Unidirectional Current-Sense Configuration
Figure 13-25 Unidirectional Current-Sense Output
Figure 13-26 Unidirectional Current-Sense Regions