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L6480 bảng dữ liệu(PDF) 27 Page - STMicroelectronics

tên linh kiện L6480
Giải thích chi tiết về linh kiện  The L6480, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping.
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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L6480 bảng dữ liệu(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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