Texas Instruments DRV814x-Q1EVM, User Manual, Page: 7 / 22

The EZFET_LITE (based on the Texas Instruments MSP430F5528) is programmed at the factory with firmware
that implements UART and JTAG over USB.
Figure 3-3. EVM Communication Connections
Table 3-2 describes each communication connection.
Table 3-2. Communication Description
Designator Description
J5 MSP430 14-pin JTAG interface. Used for programming EZFET_LITE
firmware on MSP430F5528 during manufacturing and not used
during normal user operation.
J6 Micro-USB interface for main MCU (MSP430G2553). Both UART
and JTAG are routed over this connection.
J7 These headers route communications and 3.3 V to the main MCU.
Jumpers should be installed on 3V3, RX, TX, TDIO and TCK
positions.
3.2.4 Supply Input
Figure 3-4 illustrates the portions of the EVM associated with the main supply input powering the DRV824x-Q1
or DRV814x-Q1 device, and the associated load(s). Starting from the upper-left, and working clockwise around
the image:
• Supply reverse polarity protection. The Texas Instruments LM74610QDGKRQ1 drives a Texas Instruments
CSD18513Q5A 40V 100A N-channel MOSFET.
• Fuses (note: DRV8243-Q1 EVMs will only have a single fuse populated).
• Not pictured (underside): TVS diode.
• High current supply input with screw terminals. Supply shall be b4.5 VDC to +36 V. Test points are
provided.
• Pi filter section comprising two 50 V 150 uF capacitors and a 1 mH inductor (misc. passive components
omitted from image for simplicity).
www.ti.com Evaluation Hardware Overview
SLVUC46A – MARCH 2021 – REVISED JULY 2021
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DRV824x_DRV814x-Q1EVM User’s Guide 7
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