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L6480 Datasheet(PDF) 27 Page - STMicroelectronics

Part # L6480
Description  The L6480, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping.
PDF  73 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6480 Datasheet(HTML) 27 Page - STMicroelectronics

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L6480
Functional description
Doc ID 023278 Rev 3
27/73
Figure 11.
OSCIN and OSCOUT pin configuration
Note:
When OSCIN is UNUSED, it should be left floating.
When OSCOUT is UNUSED it should be left floating.
6.9
Overcurrent detection
The L6480 measures the load current of each half-bridge sensing the VDS voltage of all the
Power MOSFETs (Figure 12). When any of the VDS voltages rise over the programmed
threshold, the OCD flag in the STATUS register is forced low until the event expires and a
GetStatus command is sent to the device (Section 9.1.24 and Section 9.2.20). The
overcurrent event expires when all the Power MOSFET VDS voltages fall below the
programmed threshold.
The overcurrent threshold can be programmed by the OCD_TH register in one of 32
available values ranging from 31.25 mV to 1 V with steps of 31.25 mV (Table 18
Section 9.1.17).



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