1.2 I/O Descriptions
lists the BQ25672EVM board connections and ports.
Table 1-2. EVM Connections
Connector, Port
Description
J1
VIN1
Positive rail of the priority input adapter or power supply
GND
Ground
J2
VIN2
Positive rail of the secondary input adapter or power supply
GND
Ground
J3
SYSTEM
Positive rail of the charger system output voltage, typically connected to the system load
GND
Ground
J4
VPMID
Positive rail of the charger output voltage for reverse mode (OTG). This output also shares the rail with
VBUS in forward mode
GND
Ground
J5
BATTERY
Positive rail of the charger battery input
SNS_BATP
Input connected to the positive terminal of the battery for remote battery voltage measurement
GND
Ground
J6
USB port
N/A
J7
EXTERNAL
THERMISTOR
Input connected to an external battery temperature sensing thermistor
GND
Ground
J8
Communication port
I
2
C communication port for use with the EV2300/2400 Interface Board
J9
Communication port
I
2
C communication port for use with the USB2ANY Interface Adapter (for future use)
lists the shunt installations available on the EVM, and their respective descriptions.
Table 1-3. EVM Shunt and Switch Installation
Shunt
Description
BQ25672 Setting
JP1
ACDRV1 pin connection to control ACFET1-RBFET1. Connect this to _acdrv1 when utilizing
the input protection MOSFETs. Connect this to GND when input protection MOSFETs are not
utilized or bypassed
ACDRV1 to _acdrv1
JP2
ACDRV2 pin connection to control ACFET2-RBFET2. Connect this to _acdrv2 when utilizing
the input protection MOSFETs. Connect this to GND when input protection MOSFETs are not
utilized or bypassed
ACDRV2 to _acdrv2
JP3
VIN1/VAC1 to VBUS bypass connection. Connect this when the input protection MOSFET
feature is not desired. This will connect the input source on VIN1 to VBUS.
Not Installed
JP4
VIN2/VAC2 to VBUS bypass connection. Connect this when the input protection MOSFET
feature is not desired. This will connect the input source on VIN2 to VBUS.
Not Installed
JP5
BAT to BATTERY bypass connection. Connect this when the ship and shutdown mode
features are not desired.
Not Installed
JP6
N/A
Installed
JP7
USB port J6 positive rail to charger VBUS selection. Use shunt to select either VIN1/VAC1 or
VIN2/VAC2 as the connection for the USB port.
USB_VIN to VAC1
JP8
SDRV pin connection to control SFET. Disconnect when ship and shutdown mode features are
not desired.
Not Installed
JP9
BATP pin connection. BATP is always connected to J5 pin 2 for remote battery sense. If
remote sense is not used, short pin 1 to J5 pin 1 (BATTERY) for the charger constant voltage
sensing to occur at the connector pin or short pin 2 to pin 3 (BAT pin) for the charger constant
voltage sensing to occur on the PCB board. Do not leave BATP pin floating.
Short pin 1 to J5 pin 1
(BATTERY)
JP10
Do not remove
Installed
JP11
N/A
Installed
JP12
REGN to TS resistor divider network connection. This must remain connected.
Installed
JP13
ILIM_HIZ pin setting for 500 mA. Connect to set the external input current limit setting to
500mA
Not Installed
Introduction
4
BQ25672 Evaluation Module
SLUUCF3A – DECEMBER 2020 – REVISED OCTOBER 2021
Copyright © 2021 Texas Instruments Incorporated
