4 Connectors
4.1 Powering the BQ79631EVM
Power to enable the use of the BQ79631EVM is supplied through the 5V_LV connector on the left side of the
board. Simply connect the positive and negative terminals of a power supply set to 5 V to the pins 5V_LV and
GNDLV respectively.
4.2 Primary Input and Output Connectors
4.2.1 Jumper Placements
Below is a table explaining each of the jumpers available to the user on the BQ79631EVM.
Table 4-1. Jumper Placements
Pinheader
Contacts
Jumper Connection
Populated by Default?
J2
1-2
VCC40V to Charge_Plus
No
4.2.2 Host Interface
The 10-pin J10 - Serial connector is used to connect the EVM to a PC running the GUI or to a host controller.
Texas Instruments recommends using the USB2ANY that is available to order through TI.com, which includes
the proper 10-pin cable.
Table 4-2. J10 Serial Connector
Designator
Manufacturer
Part Number
Mating Connector
J10
Samtec Inc.
Manufacturer: TSW-105-08-L-D-
RA
10-pin ribbon connector
packaged with USB2ANY
Table 4-3. Pin Descriptions
Pin
Name
1
NC
2
NC
3
NFAULT signal from BQ79631-Q1
4
NC
5
GND
6
USB2ANY 3.3 V
7
USB2ANY TX (RX of BQ79631-Q1)
8
USB2ANY RX (TX of BQ79631-Q1)
9
NC
10
NC
4.2.3 High-Side and Low-Side Communications
There are two sets of 4-position molex connectors available on each BQ79631EVM board. These provide high-
side (J27) and low-side (J26) communications between stacked EVM devices.
Table 4-4. Pin Description - J26
Pin
Name
Comments
1
COML_N
COM low-side negative
2
COML_P
COM low-side positive
3
N/A
Unused
4
N/A
Unused
Table 4-5. Pin Description - J27
Pin
Name
Comments
1
N/A
Unused
Connectors
SLUUCC3 – FEBRUARY 2021
BQ79631EVM Evaluation Module
11
Copyright © 2021 Texas Instruments Incorporated
