Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsDev KitsPCB design board

User's Guide

SLVU401B–September 2010– Revised August 2011

TPS2540EVM-623: Evaluation Module for TPS2540/40A

and TPS2541/41A

This User’s Guide describes the evaluation module (EVM) for the TPS2540/40A and TPS2541/41A.

TPS2540/40A and TPS2541/41A are USB charging port power switch/ controllers for host charging 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 Current Limit Setpoint ............................................................................................. 5

3.3 Test Setup .......................................................................................................... 5

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

4.1 Layout Guidelines .................................................................................................. 6

4.2 PCB Drawings ...................................................................................................... 6

5 Bill of Materials .............................................................................................................. 9

List of Figures

1 TPS2540EVM-623 Schematic............................................................................................. 3

2 Typical TPS2540EVM-623 Test Setup................................................................................... 5

3 Top Side Placement and Routing......................................................................................... 6

4 Layer Two Routing.......................................................................................................... 7

5 Layer Three Routing........................................................................................................ 7

6 Bottom Side Placement and Routing..................................................................................... 8

List of Tables

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

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

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

4 TPS2540/40A Mode Truth Table ......................................................................................... 4

5 TPS2541/41A Mode Truth Table ......................................................................................... 5

6 TPS2540/40A/41/41A EVM Bill of Materials ............................................................................ 9

SLVU401B–September 2010–Revised August 2011 TPS2540EVM-623: Evaluation Module for TPS2540/40A and TPS2541/41A

Submit Documentation Feedback

Summary of content (11 pages)

PAGE 1
User's Guide SLVU401B – September 2010 – Revised August 2011 TPS2540EVM-623: Evaluation Module for TPS2540/40A and TPS2541/41A This User’s Guide describes the evaluation module (EVM) for the TPS2540/40A and TPS2541/41A. TPS2540/40A and TPS2541/41A are USB charging port power switch/ controllers for host charging ports and dedicated charging ports. 1 2 3 4 5 Contents Description ................................................................................................................... 1.
PAGE 2
Description 1 www.ti.com Description The TPS2540EVM-623 allows reference circuit evaluation of the TI TPS2540/40A and TPS2541/41A USB charging port power switch and controller. TPS2540EVM-623 orderable configuration is equipped with TPS2540RTE but the TPS2540A or TPS2541/41A may also be evaluated by replacing U1 with the appropriate device. 1.1 Features • • • • • • • • • • 1.2 Applications • • 1.
PAGE 3
Schematic www.ti.com 2 Schematic + 2 1 2 Figure 1.
PAGE 4
General Configuration and Description www.ti.com 3 General Configuration and Description 3.1 Physical Access Table 1 lists the TPS2540EVM-623 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. J3A (UPPER) Primary charging port (with data). J3B (LOWER) Auxiliary charging port (no data).
PAGE 5
General Configuration and Description www.ti.com Table 4. TPS2540/40A Mode Truth Table (continued) CTL1 (JP5) CTL2 (JP4) CTL3 (JP3) 1 0 1 Mode Dedicated Charging Port, divider mode only 1 1 1 Charging Downstream Port, BC Specification 1.1 The CTL pins configure the device mode. Setting S1 to the CDP position (open) is equivalent to setting the CTL pins to the state in the last row of Table 5. Setting S1 to the DIS/SDP/DCP position allows the remaining rows to be configured. Table 5.
PAGE 6
EVM Assembly Drawings and Layout Guidelines 4 EVM Assembly Drawings and Layout Guidelines 4.1 Layout Guidelines • • • • 4.2 www.ti.com TPS2540/40A/41/41A placement: Place the TPS2540/41 near the USB output connector and 150µF 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 0.1µF bypass capacitor near the IN pin and make the connection using a low inductance trace.
PAGE 7
EVM Assembly Drawings and Layout Guidelines www.ti.com Figure 4. Layer Two Routing Figure 5.
PAGE 8
EVM Assembly Drawings and Layout Guidelines www.ti.com Figure 6.
PAGE 9
Bill of Materials www.ti.com 5 Bill of Materials Table 6. TPS2540/40A/41/41A EVM Bill of Materials Count REFDES Value Description Size Part Number Supplier 1 C1 10 µF Capacitor, Ceramic, 10V, X5R, 10% 0805 Std Std 2 C2, C4 0.1 µF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std 1 C3 150 µF Capacitor, Tant, Low ESR, 10V, ±10% 7343 (D) TPSD157K010R0100 AVX 1 D1 LN1271R Diode, LED, Red, 10-mA, 0.4-mcd 0.114 X 0.
PAGE 10
Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
PAGE 11
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.