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UM1756 데이터시트(PDF) 21 Page - STMicroelectronics

부품명 UM1756
상세설명  The EVAL6480H-DISC and EVAL6482H-DISC are low cost development tools based
PDF  49 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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UM1756 데이터시트(HTML) 21 Page - STMicroelectronics

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UM1756
Device configuration
49
4
Device configuration
This section offers an overview of the basic configuration steps which are required to make
the demonstration board operative.
Warning:
Important - the device configuration is mandatory. The
default configuration is not operative.
Before changing the device configuration verify that the
device is in high impedance status (power stage is disabled).
4.1
Gate drivers
The system allows controlling a wide range of motors - thanks to a large driver's settings
choice.
For details please refer to the AN4354: “L648x devices: gate drivers setup” - application
note available on www.st.com.
The board includes 2 STL30N10F7 - half bridge N-channel MOSFETs. These MOSFETs
presents low RDSon adding high switching performance. Few several settings could by
applied depending on choice of supply voltage motors, EMI tolerance vs. speed of the
communication.
We propose two configurations according to the user choice:
Performance: low power dissipation vs. fast commutation - high electromagnetic
interference.
Recommended: medium power dissipation, commutation and electromagnetic
interference.
Table 6. Settings gate driving
Parameter
Performance solution
(value)
Recommended solution
(value)
Unit
Gate current
96
32
mA
VCC value
7.5
7.5
V
UVLO thresholds
7
7
V
Turn OFF boost time
Disabled
Disabled
ns
Controlled current time
250
750
ns
Blanking time
250
250
ns
Deadtime
125
125
ns



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