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L9908 Datasheet(PDF) 71 Page - STMicroelectronics

Part # L9908
Description  Automotive 3-Phase motor gate driver unit
PDF  153 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9908 Datasheet(HTML) 71 Page - STMicroelectronics

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Figure 44. n-th Current Monitor Channel simplified block diagram
Each current monitor channel can be used to measure positive or negative motor current flow through single (DC
Link) or multiple (Single Leg) shunts system configurations.
Figure 45. External Shunts Configurations a) DC-Link, b) 2xSingle Leg + DC-Link, c) 3xSingle Leg
The specific n-th current monitor channel can be disabled by a dedicated SPI bit in the SAFETY_RELEVANT2
register, as follows:
Table 68. n-th Current Monitor Channel enable bit
CSn_DIS
Description
0
n-th current monitor enabled (Default)
1
n-th current monitor disabled
When disabled, the n-th input current measurement structure is set in low consumption mode, the related DSP
logic is reset and the output stage is set into high impedance state.
The current monitor channel consists of three main parts:
•
A/D Conversion;
•
Digital Signal Processing;
•
D/A Conversion.
L9908
Current monitors
DS13546 - Rev 3
page 71/153



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