ZHCSDA8E January 2015 – May 2018 DRV10975
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 修訂歷史記錄
- 5 說(shuō)明 （續(xù)）
- 6 Pin Configuration and Functions
- 7 Specifications
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8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3 Feature Description
- 8.4
Device Functional Modes
- 8.4.1 Motor Parameters
- 8.4.2 Starting the Motor Under Different Initial Conditions
- 8.4.3 Motor Start Sequence
- 8.4.4 Start-Up Current Setting
- 8.4.5 Closed Loop
- 8.4.6 Current Limit
- 8.4.7 Lock Detect and Fault Handling
- 8.4.8 AVS Function
- 8.4.9 PWM Output
- 8.4.10 FG Customized Configuration
- 8.4.11
Diagnostics and Visibility
- 8.4.11.1 Motor Status Readback
- 8.4.11.2 Motor Speed Readback
- 8.4.11.3 Motor Electrical Period Readback
- 8.4.11.4 BEMF Constant Readback
- 8.4.11.5 Motor Estimated Position by IPD
- 8.4.11.6 Supply Voltage Readback
- 8.4.11.7 Speed Command Readback
- 8.4.11.8 Speed Command Buffer Readback
- 8.4.11.9 Fault Diagnostics
- 8.5 Register Maps
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文檔支持
- 13機(jī)械、封裝和可訂購(gòu)信息
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
散熱焊盤(pán)機(jī)械數(shù)據(jù) (封裝 | 引腳)
- PWP|24
訂購(gòu)信息
8.4.4.1 Start-Up Current Ramp-Up
A fast change in the applied drive current may result in a sudden change in the driving torque. In some applications, this could result in acoustic noise. To avoid this, the DRV10975 allows the option of limiting the rate at which the current is applied to the motor. OpLCurrRt[2:0] sets the maximum voltage ramp up rate that will be applied to the motor. The waveforms in Figure 20 show how this feature can be used to gradually ramp the current applied to the motor.
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| Start driving with fast current ramp | Start driving with slow current ramp |