Table 1-1. I/O Description - Texas Instruments BQ2573 Series User Manual

Evaluation module

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Table of Contents

Introduction

1 Introduction

1.1 EVM Features

This EVM supports the following features:

•

Evaluation module for the BQ2573X devices

•

Supports 3.5- to 26-V input source

– 3.5- to 26-V, 0- to 10-A input operating range and 1–5 cell battery configuration

– Supports USB2.0, USB 3.0, USB 3.1 ( USB Type-C

– Supports USB OTG with 3- to 24-V adjustable output

– Supports Fast Role Swap (FRS) feature for USB_PD

•

Narrow VDC (NVDC) power path management

– Instant-on works with no battery or deeply discharged battery

– Battery supplements system when adapter is fully-loaded

•

400-kHz or 800-kHz switching frequency for high efficiency

•

Power Path (BQ25730) or Non Power Path (BQ25731) options

•

Power and Current Monitor for CPU Throttling

•

Safety

– Thermal shutdown

– Input and system overvoltage protection

– MOSFET overcurrent protection

•

Charge status outputs for LED or host processor

•

Maximum power tracking capability by input voltage regulation

•

Test points for key signals available for testing purposes. Easy probe hook-up.

•

Jumpers available. Easy-to-change connections.

1.2 General Description

The BQ2573X evaluation modules are complete charger modules for evaluating an I

charge using the BQ2573X devices.

The BQ2573X EVM does not include the EV2400 interface board. To evaluate the BQ2573X EVM, order an

EV2400 interface board separately.

The BQ2573X is a synchronous NVDC-1 battery buck boost charge controller, offering a low component count,

high efficiency solution for space-constrained, multi-chemistry battery charging applications.

The BQ2573X charges the battery from a wide range of input sources including a 5-V USB adapter to a high-

voltage USB PD source and traditional adapters.

During power up, the charger sets the converter to buck, boost, or buck-boost configuration based on the input

source and battery conditions. During the charging cycle, the charger automatically transits among buck, boost,

and buck-boost configuration without host control.

The BQ2573X monitors adapter current, battery current, and system power. The flexible programmed

PROCHOT output goes directly to the CPU for throttle back, when needed.

For more details on register functions, see the

Controller With System Power Monitor and Power Path Control

Boost Battery Charge Controller Data

Table 1-1

lists the I/O descriptions.

Jack

J1–VIN

J1–PGND

J2-CHRG_OK

BQ2573X Evaluation Module

™

) and USB_PD

BQ25730 I

C 1-5 Cell Narrow VDC Buck-Boost Battery Charge

Sheets.