Introduction
2
SLVUBL8 – August 2019
Copyright © 2019, Texas Instruments Incorporated
TPS25840-Q1 Evaluation Module
1
Introduction
The TPS25840Q1EVM-079 is an evaluation module (EVM) for TI's TPS25840-Q1 USB BC1.2 5-V, 3.5-A
output, 36-V input synchronous buck with cable compensation. The EVM operates over a range from 6 V
to 36 V and provides USB type A connectors to evaluate USB BC1.2 and USB2.0 data communication
functions. The value of cable compensation, current limit, and switching frequency can be adjusted by
resistors on the EVM.
1.1
Features
The following features are available on this EVM:
•
6-V to 36-V input range, 3.5-A continuous output current buck converter
•
Forced PWM operation with spread-spectrum dithering
•
Fully AEC-Q100 qualified
•
± 8% Current sense accuracy (IOUT > 1.5 A) for precision cable droop compensation
•
USB battery charging specification Rev. 1.2 compliant
•
D+ and D– Short-to-VBAT, and VBUS protection
•
User-programmable VBUS current limit
1.2
Applications
The EVM is used in the following applications:
•
Automotive: Infotainment, USB hubs, aftermarket USB chargers
2
Test Setup and Results
shows the EVM board . Connect J1 to the 13.5-V power supply. Connect USB Type-A device to
J3 connector.
Figure 1. EVM Setup for Charging USB Type-A Device
