Datasheet

TPS2543EVM

J2 J3

PC (USB charging source)

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General Configuration and Description

Table 4. TPS2543 Mode Truth Table

CTL1 CTL2 CTL3 ILIM_SEL Mode

0 0 0 X OUT discharge, power switch OFF

0 0 1 0 Dedicated charging port, auto-detect, without power-wake function

0 0 1 1 Dedicated charging port, auto-detect, with power wake function

(1)

0 1 1 0 Dedicated charging port, auto-detect, with load detection disabled

0 1 1 1 Dedicated charging port, auto-detect, with load detection enabled

(2)

1 0 0 X Dedicated charging port, BC 1.2 only, ILIM_HI or ILIM_LO is selected to set I

by ILIM_SEL.

1 0 1 X Dedicated charging port, Divider1 mode only, ILIM_HI or ILIM_LO is selected to

set I

by ILIM_SEL.

X 1 0 X Standard downstream port, USB 2.0 mode, ILIM_HI or ILIM_LO is selected to

set I

by ILIM_SEL.

1 1 0 1 Standard downstream port, USB 2.0 mode, ILIM_LO is selected to set I

, no

discharge to or from 1111

1 1 1 1 Charging downstream port, BC 1.2, with load detection enabled

(2)

(1)

Current limit (I

) is automatically changed, I

is I

OS_PW

while no load, I

is switched to the value set by ILIM_HI and STATUS is

active-low while with load

(2)

ILIM_HI is selected to set I

, ILIM_LO is selected to set load-detection current threshold (I

)

3.2 Test Setup

Figure 2 shows a typical test setup for TPS2543EVM. Connect J2 to the PC either directly (insert J2 into

available/accessible PC USB port) or using any Type A Male to Type A Female USB v2.0 extension cable.

USB power and data are available at J3.

Figure 2. Typical TPS2543EVM Test Setup

SLVU660A–February 2012–Revised February 2013 TPS2543EVM User's Guide

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