USB
Power
VIN
External
MS
P
He
ad
e
r
D
RV
He
ad
e
r
Power to Rest of Board
Power to DRV2700
Overview of EVM
www.ti.com
2
Overview of EVM
The following sections provide a description of each of the blocks identified in
Figure 1
.
2.1
DRV2700
The DRV2700 is a single-chip, high-voltage piezo driver with an integrated 105-V boost switch, integrated
power diode, and integrated fully-differential amplifier. This EVM allows the designer to evaluate this
device and appropriately prototype it into their design. See the DRV2700 (
SLOS861
) datasheet for more
in-depth information.
2.2
Microcontroller (MSP430)
An onboard MSP430F5510 is used to control the various input signals as well as communicate through
the USB to the GUI. See the
Quick Start Board Setup
section for how to setup and run with the GUI.
2.3
Power Supply Inputs and Path
Two power supply inputs are available to power the EVM: USB power and V
EXTERNAL
(
Ext VIN
on the EVM).
Each of these inputs can be used to power the entire board or parts of the board.
2.3.1
USB Power Input
The USB power input can be supplied from a standard USB port on a computer, USB charger, or USB
battery pack. This input is intended for ease-of-use and can be routed to power all circuitry on the EVM.
Additionally, this input has a 5-V LED indicator showing that power is being supplied to the EVM. If the
GUI is going to be used, the USB must be connected to the computer and JP2 routed to USB connection.
2.3.2
VIN/External Power Input
Provide the VIN power input with an external 3.6- to 5.5-V power supply. Additionally, this input can power
the entire board.
2.3.3
Power Path Selection
Each of the two power supply inputs can be routed to the DRV2700 or the rest of the IC. The positions of
the jumpers are described in
Table 2
or can be read from the silkscreen of the EVM.
Figure 2
shows the
basic diagram of the power paths.
Figure 2. Power Path Diagram
If a power measurement of the DRV2700 circuitry is desired, it is best to provide the MSP jumper (JP2)
with USB power and the DRV jumper (JP4) with VIN. With this configuration, measuring the provided
voltage and current into VIN gives the power consumption of the DRV2700.
8
DRV2700EVM-HV500 High Voltage Piezo Driver Evaluation Kit
SLOU407A – April 2015 – Revised May 2015
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