ZHCSG57B March 2017 – December 2018 DRV8702D-Q1 , DRV8703D-Q1
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Bridge Control
- 7.3.2 MODE Pin
- 7.3.3 nFAULT Pin
- 7.3.4 Current Regulation
- 7.3.5 Amplifier Output (SO)
- 7.3.6 PWM Motor Gate Drivers
- 7.3.7 IDRIVE Pin (DRV8702D-Q1 Only)
- 7.3.8 Dead Time
- 7.3.9 Propagation Delay
- 7.3.10 Overcurrent VDS Monitor
- 7.3.11 VDS Pin (DRV8702D-Q1 Only)
- 7.3.12 Charge Pump
- 7.3.13 Gate Drive Clamp
- 7.3.14
Protection Circuits
- 7.3.14.1 VM Undervoltage Lockout (UVLO2)
- 7.3.14.2 Logic Undervoltage (UVLO1)
- 7.3.14.3 VCP Undervoltage Lockout (CPUV)
- 7.3.14.4 Overcurrent Protection (OCP)
- 7.3.14.5 Gate Driver Fault (GDF)
- 7.3.14.6 Thermal Shutdown (TSD)
- 7.3.14.7 Watchdog Fault (WDFLT, DRV8703D-Q1 Only)
- 7.3.14.8 Reverse Supply Protection
- 7.3.15 Hardware Interface
- 7.4 Device Functional Modes
- 7.5 Programming
- 7.6 Register Maps
- 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
7.3.11 VDS Pin (DRV8702D-Q1 Only)
The VDS pin on the DRV8702D-Q1 device is used to select the VDS threshold voltage for overcurrent detection.
Tying the VDS pin to ground selects the lowest setting of 0.06 V. Leaving this pin open selects the setting of
0.48 V. Tying the VDS pin to the AVDD the pin disables the VDS monitor. For a detailed list of VDS configurations, see Table 7.
Figure 42. VDS Block Diagram Table 7. VDS Pin Resistor Setting
| VDS RESISTANCE | VDS VOLTAGE | OVERCURRENT TRIP LEVEL (VDS(OCP)) | CIRCUIT |
|---|---|---|---|
| < 1 kΩ to GND | GND | 0.06 V |  |
| 33 kΩ ± 5% to GND | 0.7 V ± 5% | 0.12 V |  |
| 200 kΩ ± 5% to GND | 2 V ± 5% | 0.24 V | |
| > 2 MΩ to GND, Hi-Z | 3 V ± 5% | 0.48 V |  |
| 68 kΩ ± 5% to AVDD | 4 V ± 5% | 0.96 V |  |
| < 1 kΩ to AVDD | AVDD | Disabled |  |