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L9958 Datenblatt(PDF) 11 Page - STMicroelectronics

Teilenummer L9958
Bauteilbeschribung  Low RDSON SPI controlled H-Bridge
PDF  38 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9958 Datenblatt(HTML) 11 Page - STMicroelectronics

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L9958
Device description
37
3.2.2
DIR and PWM inputs
The pins DIR and PWM are internally pulled down. The bridge is controlled by these two
inputs according to the table below.
Figure 5. H-Bridge configurations
The outputs can be disabled (set to tri-state) by the Disable and Enable inputs DI and EN.
Input DI has an internal pull-up. Input EN has an internal pull-down. During freewheeling
phase, an active freewheeling on the Low-Side MOS is automatically set, switching ON the
power transistor in parallel to the internal freewheeling diode.
Table 6. Control pins DIR, PWM
DIR
PWM
OUT1
OUT2
Bridge Status
H
H
H
L
Forward
L
L
L
L
Freewheeling Low
L
H
L
H
Reverse
H
L
L
L
Freewheeling low



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