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L6223 Folha de dados(PDF) 21 Page - STMicroelectronics

Nome de Peças L6223
Descrição Electrónicos  DMOS PROGRAMMABLE HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER
PDF  33 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6223 Folha de dados(HTML) 21 Page - STMicroelectronics

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Figure 26: Phase current waveform during chopping: the current decay during tOFF is halved.
Figure 27: Simplified waveforms of the current through the phase A (winding MA) and through the phase
B (winding MB). See also fig.22.
stepper motor in the Full Step Mode.
The calculations consider three different condi-
tions of heatsinking: the package with minimum
dissipating copper area on the p.c.b. (Rthj-amb =
55
°C); the copper side of 6 cm2 (Rthj-amb =
40
°C/W - See Fig. 34) and the additional heatsink
(Rthj-amb =30
°C/W).
L6223
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