Datasheet

Computer

USB port

USB Interface

Adapter

I/O

USB

TexasInstruments

©2006

10-pin

Ribbon

Cable

To EVM

www.ti.com

Test Summary

2.2.6 HPA172 Communication Kit (USB TO GPIO)

A HPA172 USB-to-I

C communication kit.

2.2.7 Software

Download BQ2414xSW.zip from the charger's product folder, unzip the file, and double-click on the

SETUP.EXE file. Follow the installation steps.

2.3 Recommended Test Equipment Setup

1. Set Power Supply #1 for 5 V ± 100 mVdc, 2-A ± 0.1-A current limit, and then turn off supply.

2. Connect the output of Power Supply #1 in series with a current meter (multimeter) to J1 (VIN, GND).

3. Connect a voltage meter across J4 and J5 (VIN, GND).

4. Connect the Load #2 in series with a current meter (multimeter) to J7 (BAT, GND). Ensure that a

voltage meter is connected across J10 or TP10 and J11 or TP11 (BAT, GND).

5. Turn on the Load #2. Use the constant voltage mode. Set the output voltage to 2.5 V.

6. Turn off Load #2.

7. Connect the HPA172 USB-TO-GPIO to J2 using the 10-pin ribbon cable. Connect the USB port of the

HPA172 kit to the USB port of the computer. The connections are shown in Figure 1.

Figure 1. Connections of HPA172 Kit

8. Install jumpers per Section 1.5

9. After the preceding steps have been performed, the test setup for charging from VIN is shown in

Figure 2

SLUU495A–October 2011–Revised September 2012 bq24140, Fully Integrated, Dual-Input, Switch-Mode, One-Cell, Li-Ion Charger

With Full USB Compliance and USB-OTG Support EVM

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