GND
High Voltage
Output
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Overview of EVM
2.4
EN Configuration
The EN input for the DRV2700 has 4 different driving configurations:
•
Driven through the MSP430. This is done by connecting the configuration jumper to the “MSP” state
(default).
•
Pulled to a logic level high through pullup resistor. This is done by connecting the configuration jumper
to the “PU” state.
•
Pulled to a logic level low through internal pulldown resistor. This is done by removing the configuration
jumper.
•
Driven externally. This is done by connecting the external control signal to the center 100-mil header.
This signal has an LED to indicate when the signal is at a logic-level high.
2.5
Inputs
The analog input (TP1) is used for PWM and analog inputs. See
PWM and Analog Inputs
, for more
information.
2.6
Outputs
The DRV2700EVM-HV500 has a high voltage output ranging from 0–500 V. This output is routed to a
terminal connector to mitigate the user touching between the high voltage node and GND. Be sure to
disable power when connecting and disconnecting the high voltage node.
Figure 3. Output Diagram
2.7
TRIG Button
The DRV2700EVM-HV500 has a built-in trigger button for user prototyping. If different modes of operation
are desired without using the GUI, the MSP430 can be programmed such that the trigger button can cycle
through different modes.
9
SLOU407A – April 2015 – Revised May 2015
DRV2700EVM-HV500 High Voltage Piezo Driver Evaluation Kit
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