4 Testing Procedures
4.1 Equipment
This section includes a list of supplies required to perform tests on this EVM
1.
Two Power Supplies
: Keithley 2400 Powersupply or equivalent
a. Power Supply #1 (PS #1) will be used as input voltage
b. Power Supply #2 (PS #2) will be used as battery voltage
2.
4 Channel Oscilloscope
: To monitor voltages at VIN, VBAT, and VSYS
a. Channel 1 (SC #1) will be used to probe VIN
b. Channel 2 (SC #2) will be used to probe VBAT
c. Channel 3 (SC #3) will be used to probe VSYS
3.
Computer:
A computer with at least one USB port and a USB cable
4.
PC communication interface
:
5.
Software:
from Texas Instruments.
4.2 Charge Mode
Connect the equipment as the following:
• Power Supply PS#1: VIN of the BQ25180 at 5V
• Power supply PS#2: VBAT of the BQ25180 at 3.7V
• Scope Channel SC#1: VIN
• Scope Channel SC#2: VSYS
• Scope Channel SC#3: VBAT
Turn ON the supply PS#2, then turn ON the supply PS#1. The VSYS will rise to the level of 4.5V. The device will
begin to charge as long as the TS is left at default configuration and there are no other faults.
VBAT
VIN
TS/MR Pushbu
on
USB2ANY connec
on
VDD connec on
Figure 4-1. BQ25180 EVM Connections
To adjust the charge current or change other parameters, connect the USB2ANY to the EVM and then startup TI
Charger GUI.
Testing Procedures
SLUUCH5A – AUGUST 2021 – REVISED JANUARY 2022
BQ25180 EVM User's Guide
5
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