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AN4043 Datasheet(PDF) 29 Page - STMicroelectronics

No. de pieza AN4043
Descripción Electrónicos  In recent years the variable speed motor control market has required high performance
PDF  60 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4043 Datasheet(HTML) 29 Page - STMicroelectronics

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AN4043
Electrical characteristics and functions
Doc ID 022726 Rev 2
29/60
The sense voltage signals must be provided to an A-D converter. They are usually shifted
and amplified by dedicated op amps in order to exploit the full range of the A-D converter.
The typical scheme and principle waveforms are shown in
Figure 19:
Figure 18.
3-phase system
3-phase driver
Sinusoidal Vector Control
Sensing:
Discontinuous Voltage at f
PWM frequency
Discontinuous Voltage at f
PWM frequency
Power
stage
I
PHASE
AM09338v1
Figure 19.
General advanced current sense scheme and waveforms



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