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L9958 Datasheet(PDF) 24 Page - STMicroelectronics

Part # L9958
Description  Low RDSON SPI controlled H-Bridge
PDF  38 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9958 Datasheet(HTML) 24 Page - STMicroelectronics

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Diagnostics and protections
L9958
24/38
DocID17269 Rev 6
Figure 20. Off-state diagnostic principle
5.4
H-Bridge functional status
Three bits in the diagnosis register are used to give a feedback about the state of the H-
Bridge. Status are Current Limitation (bit 4 "C_LIM"), Temperature Warning (bit 5 "T_WRN")
and Bridge Enable Status (bit 7 "ACT"). Those bits do not report a failure but only a
functional state of the H-bridge that could be useful to change the control strategy mainly in
term of power dissipation.



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