Texas Instruments TPS2543EVM Manuel utilisateur

User's Guide

SLVU660–February 2012

TPS2543EVM User's Guide

This user’s guide describes the evaluation module (EVM) for the TPS2543. TPS2543 is a USB charging

port power switch and controller for charging host ports and dedicated charging ports.

Contents

1 Description ................................................................................................................... 2

1.1 Features ............................................................................................................. 2

1.2 Applications ......................................................................................................... 2

1.3 Glossary of Terms ................................................................................................. 2

2 Schematic .................................................................................................................... 3

3 General Configuration and Description .................................................................................. 4

3.1 Physical Access .................................................................................................... 4

3.2 Test Setup .......................................................................................................... 5

4 EVM Assembly Drawings and Layout Guidelines ...................................................................... 6

4.1 PCB Drawings ...................................................................................................... 6

4.2 Layout Guidelines .................................................................................................. 9

5 Bill of Materials ............................................................................................................. 10

List of Figures

1 TPS2543EVM Schematic.................................................................................................. 3

2 Typical TPS2543EVM Test Setup ........................................................................................ 5

3 Top Side Placement........................................................................................................ 6

4 Top Side Routing ........................................................................................................... 6

5 Layer Two Routing.......................................................................................................... 7

6 Layer Three Routing........................................................................................................ 7

7 Figure 7. Bottom Side Routing............................................................................................ 8

8 Bottom Side Placement .................................................................................................... 8

List of Tables

1 Connector Functionality.................................................................................................... 4

2 Test Points................................................................................................................... 4

3 Jumpers ...................................................................................................................... 4

4 TPS2543 Mode Truth Table............................................................................................... 5

5 TPS2543EVM Bill of Materials........................................................................................... 10

SLVU660–February 2012 TPS2543EVM User's Guide

Description

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1 Description

The TPS2543EVM allows reference circuit evaluation of the TI TPS2543 USB charging port power switch

and controller.

1.1 Features

•USB Charging Port Power Switch and Controller

•Meets Battery Charging Specification BC1.2 for DCP and CDP

•Meets Chinese Telecommunications Industry 2.0 Standard YD/T 1591-2009

•Compatible With USB 2.0 and 3.0 Power Switch Requirements

•Adjustable Current Limit, 230 mA–2800 mA Typical

•Fast Overcurrent Response –1.5 μs Typical

•73-mΩHigh-Side MOSFET

•2.6-GHz Bandwidth USB 2.0 Data Switch

•EVM supports USB 3.0 data passthrough

1.2 Applications

•USB Ports/Hubs

•Notebook PCs

1.3 Glossary of Terms

•Charging downstream port (CDP)

–A downstream port that complies with the USB 2.0 definition of a host or a hub, and additionally

defines a handshake on DP/DM to identify a BC 1.1 compliant host to a BC 1.1 compliant portable

device

–BC 1.1 allows a high-speed portable device to draw 900 mA and low-speed or full-speed device to

draw 1500 mA

–BC 1.2 intention is to allow all devices to draw 1500 mA

–BC 1.2 corrects BC 1.1 to ensure USB host provides 5 V at >1500 mA

•Standard downstream port (SDP)

–USB 2.0 defined port currently adopted by most USB ports

–Portable device is allowed to draw 100 mA initially and request additional current over USB

communications in 100-mA steps up to a maximum of 500 mA

–USB host required to provide at least 500 mA at 5 V

–Portable device must draw less than 2.5 mA when in USB Suspend due to the absence of USB

communication

•Dedicated charging port (DCP) as defined in BC 1.1

–BC 1.1 defines a dedicated charging port as a downstream port on a device that outputs power

through a USB connector, but is not capable of enumerating a downstream device.

–Wall adapter must source between 500 mA and 1500 mA.

–Portable device may attempt to draw 1800 mA in order to force the wall adapter into

constant-current mode.

–BC 1.2 intention is to allow DCP to current limit above 1800 mA

•YD/T 1591-2006, updated 2009

–PROC Telecommunications Standard

–Defines wall-adapter requirements

–Rated current between 500 mA–1500 mA with defined I-V curve

2TPS2543EVM User's Guide SLVU660–February 2012

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GND

DM-OUT

GND

VOUT

USB HOST SIDE

AUX

INPUT

DM-INDP-IN

VOUT-ON

5 +/- 0.1V

DP-OUT

NOT INSTALLED

NOTES:

Install ILIM_SEL shunt for ILIM = ILIM_LO = 0.63A

Remove ILIM_SEL shunt for ILIM =ILIM_HI = 2.97A

~FAULT ~STATUS

SSTX+

SSTX-

D-

D+

SSRX+

SSRX-

VBUS

GND

G_DRN

SSTX+

SSTX-

D-

D+

SSRX+

SSRX-

VBUS

GND

G_DRN

USB PD SIDE

USB 2.0 w/USB 3.0 PASS THRU

SSP PASS THRU (90 +/- 7 OHM DIFFERENTIAL IMPEDANCE

3NOT INSTALLED on TPS2545EVM-064

TP5

JP1

TP2

TP3

TP7 TP8

JP2

LN1371G

TP6

100k

80.6k

100k

2 3

370-Ohm

R11

100k

R12

100k

R13

100k

R10

100k

TP1

LN1271R

TP4

10uF

0.1uF

100k

16.9k

150 uF

0.1uF

GND

IO1

3IO2

4VCC

TPD2E001DZDR

1IN

2DM_OUT

3DP_OUT

4ILIM_SEL

CTL1

CTL2

CTL3

STATUS

DP_IN

DM_IN

OUT

FAULT

GND

ILIM_LO

ILIM_HI

PWPD

TPS2543RTE

LN1271R

R14

TP9 TP10

JP3

S001

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Schematic

2 Schematic

Figure 1. TPS2543EVM Schematic

spacer

SLVU660–February 2012 TPS2543EVM User's Guide

General Configuration and Description

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3 General Configuration and Description

3.1 Physical Access

Table 1 lists the TPS2543EVM connector functionality, Table 2 describes the test point availability and

Table 3 describes the jumper functionality.

Table 1. Connector Functionality

Connector Label Description

J1 AUX Auxiliary high-current input connector

J2 USB INPUT USB input port

J3 POWER+DATA Charging port

D1 (RED) FAULT Fault LED

D2 (GREEN) VOUT-ON USB output powered

D3 (RED) STATUS STATUS pin LED

Table 2. Test Points

Test Point Color Label Description

TP1 WHT DP-OUT Data+ out

TP2 WHT DM-OUT Data–out

TP3 RED IN Power bus input

TP4 RED VOUT Power bus output

TP5 SM GND Power bus GND

TP6 SM GND Power bus GND

TP7 ORG DP-IN Data+ in

TP8 ORG DM-IN Data–in

TP9 WHT FAULT Fault pin

TP10 WHT STATUS Status pin

Table 3. Jumpers

Jumper Label Description

JP1 VIN Power bus input. Install shunt to allow charger source to power TPS2543 and downstream circuitry.

JP2 VOUT Power bus output. Install shunt to allow charger source to power downstream devices.

JP3 CTL3 CTL3. See MODE truth table.

CTL2 CTL2. See MODE truth table.

CTL1 CTL1. See MODE truth table.

EN TPS2543 enable select. Install shunt to disable TPS2543.

ILIM ILIM select. Install shunt to select ILIM_LO (0.6 A typical ILIM). Remove shunt to select ILIM_HI (2.8A typical ILIM).

4TPS2543EVM User's Guide SLVU660–February 2012

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TPS2543EVM

J2 J3

PC (USB charging source)

J1 D2

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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 IOS

by ILIM_SEL.

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

set IOS by ILIM_SEL.

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

set IOS by ILIM_SEL.

1 1 0 1 Standard downstream port, USB 2.0 mode, ILIM_LO is selected to set IOS , no

discharge to or from 1111

1 1 1 1 Charging downstream port, BC 1.2, with load detection enabled(2)

(1) Current limit (IOS) is automatically changed, IOS is IOS_PW while no load, IOS is switched to the value set by ILIM_HI and STATUS is

active-low while with load

(2) ILIM_HI is selected to set IOS, ILIM_LO is selected to set load-detection current threshold (ILD)

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

SLVU660–February 2012 TPS2543EVM User's Guide

K001

K002

EVM Assembly Drawings and Layout Guidelines

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4 EVM Assembly Drawings and Layout Guidelines

4.1 PCB Drawings

The following figures show component placement and layout of the EVM.

Figure 3. Top Side Placement

Figure 4. Top Side Routing

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K003

K004

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EVM Assembly Drawings and Layout Guidelines

Figure 5. Layer Two Routing

Figure 6. Layer Three Routing

SLVU660–February 2012 TPS2543EVM User's Guide

K005

K006

EVM Assembly Drawings and Layout Guidelines

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Figure 7. Figure 7. Bottom Side Routing

Figure 8. Bottom Side Placement

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EVM Assembly Drawings and Layout Guidelines

4.2 Layout Guidelines

•TPS2543 placement: Place the TPS2543 near the USB output connector and 150-µF OUT pin filter

capacitor. Connect the exposed pad to the GND pin and the system ground plane using an array of

vias.

•IN pin bypass capacitance: Place the 0.1-µF bypass capacitor near the IN pin and make the

connection using a low-inductance trace.

•DP-OUT/DM-OUT, DP-IN/DM-IN traces: Route these traces as controlled-impedance differential pairs

per the USB-2.0 specification. Minimize the use of vias in the high-speed data lines. Figure 7 provides

a good signal-routing example for the high-speed data traces. In this example, the data pairs are

routed as edge-coupled microstrips with nominal differential impedance of 90 Ω. The reference plane is

tied to GND and is shown in Figure 6. Ensure that the reference plane is void of cuts or splits above

the differential pairs to prevent impedance discontinuities.

SLVU660–February 2012 TPS2543EVM User's Guide

Bill of Materials

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5 Bill of Materials

Table 5. TPS2543EVM Bill of Materials

REFDES Count Value Description Size Part Number Supplier

C1 1 10 µF Capacitor, ceramic, 10-V, X5R, 10% 0805 Std Std

C2, C4 2 0.1 µF Capacitor, ceramic, 50-V, X7R, 10% 0603 Std Std

C3 1 150 µF Capacitor, tantalum, low-ESR, 10-V, ±10% 7343 (D) TPSD157K010R0100 AVX

D1, D3 2 LN1271R Diode, LED, red, 10-mA, 0.4-mcd 0.114 ×0.049 inch (2.9 ×1.25 LN1271RTR Panasonic

mm)

D2 1 LN1371G Diode, LED, green, 10-mA, 2.6-mcd 0.114 ×0.049 inch (2.9 ×1.25 LN1371GTR Panasonic

mm)

J1 1 ED555/2DS Terminal block, 2-pin, 6-A, 3.5-mm 0.27 ×0.25 inch (6.86 ×6.35 ED555/2DS OST

mm)

J2 1 692 112 030 100 Connector, SMT, USB 3.0 plug with clip, type A 12 mm ×21 mm 692 112 030 100 Wurth

Elektronik

J3 1 692 122 030 100 Connector, SMT, USB 3.0 horizontal, type A 12 mm ×15 mm 692 122 030 100 Wurth

Elektronik

JP1, JP2 2 PEC02SAAN Header, male 2-pin, 100-mil spacing 0.100 inch (2.54 mm) ×2 PEC02SAAN Sullins

JP3 1 PEC05DAAN Header, male 2 ×5-pin, 100-mil spacing 0.100 inch (2.54 mm) ×5×2 PEC05DAAN Sullins

L1 1 370 ΩChoke, common-mode 0.050 ×0.080 inch (1.27 ×0805USB-372ML or Coilcraft or

2.03 mm) 744231371 Wurth

Elektronik

R1, R4, R14 3 2 kΩResistor, chip, 1/16-W, 1% 0603 Std Std

R2 1 16.9 kΩResistor, chip, 1/16-W, 1% 0603 Std Std

R3 1 80.6 kΩResistor, chip, 1/16-W, 1% 0603 Std Std

R5–R13 9 100 kΩResistor, chip, 1/16-W, 1% 0402 Std Std

TP1, TP2, TP9, 4 5012 Test point, white, through-hole 0.125 ×0.125 inch (3.18 ×5012 Keystone

TP10 3.18 mm)

TP3, TP4 2 5010 Test point, red, through-hole 0.125 ×0.125 inch (3.18 ×5010 Keystone

3.18 mm)

TP5, TP6 2 5016 Test point, SM 0.185 ×0.135 inch (3.81 ×5016 Keystone

3.43 mm)

TP7, TP8 2 5013 Test point, orange, through-hole 0.125 ×0.125 inch (3.18 ×5013 Keystone

3.18 mm)

U1 1 TPS2543RTE USB charging-port power switch controller with load QFN-16 TPS2540RTE TI

detect/status

U2 1 TPD2E001DZDR IC, low-capacitance 2-chan ±15-kV ESD-protection SOP TPD2E001DZDR TI

array

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