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DRV8842EVM 产品设计参考手册 - TI（德州仪器）
制造商:
TI（德州仪器）
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开发套件
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TEXAS INSTRUMENTS DRV8842EVM 评估模块, DRV8842EVM
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DRV8842EVM数据手册
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DK-LM3S-DRV8312 BASEBOARD
HARDWARE REFERENCE GUIDE
Rev. 1.0
Figure 3. Typical Motor Drive System Block Diagram
Macro Blocks
The motor control board is divided into functional groups that enable a complete motor drive
system. These functional groups are called macro blocks. This list describes the macro blocks
that are present on the board and their functions::
• ISO controlCARD socket – Socket for a Stellaris or C2000 MCU-based controlCARD
• DC Bus Connection
• J9 power entry jack - Connect the supplied +24 V power supply here
• “PVDD/GND” Terminals – Connect an external lab supply here making sure to
observe correct polarity
• Aux-12 V Control Power Entry – Connectors to optionally provide an external 12 V
supply for logic and gate drive power. The 12 V supply can also be regulated on-board
from the DC bus depending on the setting of JP1. Set to the “VR1” position to use the
on-board regulator. Set to position “+12 V” to use the external regulator.
• DRV8312 – This module includes the DRV8312 Three-Phase PWM Motor Driver and all
of the necessary external passive components.
• Current Sense – Low-side shunt current sensing on each half-bridge.
• Reset Switch – Individual reset for each half-bridge. Reset can be forced manually from
the three-position switch or through a GPIO from the MCU. Setting switch in the down
position, “RESET” disables the half-bridge outputs. Setting the switch in the middle
position will allow control through a GPIO on the MCU. Setting the switch in the up
position, “NORMAL OP” disables control from the MCU and enables the half-bridge
outputs.
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