Texas Instruments DRV814x-Q1EVM, User Manual, Page: 3 / 22

3 Evaluation Hardware Overview
CAUTION
Hot surfaces on the EVM include the DRV824x-Q1 or DRV814x-Q1 device (U1) and the area
surrounding it.
When operating the EVM at the maximum device specifications and a high ambient
temperature, external cooling fans may be required to minimize potential fire hazard,
personal injury, or both.
3.1 Connections Overview
The major blocks of the EVM include the DRV824x-Q1 or DRV814x-Q1 driver, MSP430G2553 microcontroller
(MCU) controlling the driver, and MSP430F5528 (EZFET_LITE) for UART and JTAG communications over USB.
The EVM is designed for an input supply from 4.5 to 36 V at the rated peak drive current for each device (refer
to device datasheet). The DRV824x-Q1 or DRV814x-Q1 device provides current to a brushed DC motor or other
load. The MCU communicates with the GUI via the EZFET_LITE USB to Virtual COM Port (VCP) to control the
DRV824x-Q1 or DRV814x-Q1 device.
3.2 Connection Details
See Table 3-1 for a brief comparison of both the DRV824x-Q1EVM and DRV814x-Q1EVM in the VQFN
HotRod™ package. The 28-pin leaded package (HVSSOP or HTSSOP) version of EVM leverages much
of the same design and is also covered by this document. From a firmware and GUI perspective, the two
package options are interchangeable. The 40x40mm lower-right quadrant of the EVM is modified to the H-bridge
and half-bridge devices. The DRV814x-Q1 VQFN device orientation is rotated for better power and thermal
characteristics, taking advantage of the busbar-like footprint of the HotRod™ package.
A supply voltage ranging from +4.5 VDC to +36 VDC from a battery or a DC voltage source is connected to the
voltage supply pins. This connection includes fuse, reverse polarity, and transient protection.
The OUT1 and OUT2 banana jacks on the DRV824x-Q1EVM can be connected to a brushed motor, inductor,
or latched relay coil when used in PWM or phase/enable (PH/EN) mode. When used in independent half-bridge
mode, the OUT1 pin can drive one load and the OUT2 pin can drive a second load.
www.ti.com Evaluation Hardware Overview
SLVUC46A – MARCH 2021 – REVISED JULY 2021
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