參數(shù)資料
型號: TMC222-SI
元件分類: 運(yùn)動(dòng)控制電子
英文描述: STEPPER MOTOR CONTROLLER, PDSO20
封裝: SOIC-20
文件頁數(shù): 17/48頁
文件大?。?/td> 457K
代理商: TMC222-SI
24
TMC222 DATASHEET (V. 1.12 / March 7, 2011)
Copyright 2004-2011 TRINAMIC Motion Control GmbH & Co. KG
5.3.3
Chopper Mechanism
The chopper frequency is fixed as specified in chapter 10.4 AC Parameters on page 46. The TMC222
uses an intelligent chopper algorithm to provide a smooth operation with low resonance. The TMC222
uses internal measurements to derive current flowing through coils. If the current is less than the
desired current, the TMC222 switches a H-bridge in a way that the current will increase. Otherwise if
the current is too high, the H-bridge will be switched to decrease the current. For decreasing two
modes are available, slow decay and fast decay, whereas fast decay decreases the current faster than
slow decay. The figure below shows the chopper behavior.
Figure 13: Different Chopper Cycles with Fast and Slow Decay
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相關(guān)代理商/技術(shù)參數(shù)
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