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User's Guide

SLVU363–July 2010

TPS61183EVM-528

This user's guide describes the characteristics, operation, and use of the TPS61183 evaluation module

(EVM). This EVM contains Texas Instruments' TPS61183, a WLED power solution providing up to six

independently regulated current outputs using a single inductor step-up (boost) converter. The current

outputs are ideal for driving a WLED backlight in notebook/laptop computers. This user's guide includes

EVM specifications, recommended test setup, test results, bill of materials, and a schematic diagram.

Contents

1 Applications .................................................................................................................. 2

2 TPS61183EVM-528 Electrical Performance Specifications ........................................................... 2

3 Modifications ................................................................................................................. 2

4 Connector and Test Point Descriptions .................................................................................. 2

4.1 Input/Output Connections ......................................................................................... 2

5 Schematic and Bill of Materials ........................................................................................... 4

6 Test Requirements and Setup ............................................................................................ 6

6.1 Hardware Requirements .......................................................................................... 6

6.2 Hardware Setup .................................................................................................... 6

7 TPS61183EVM-528 Assembly Drawings and Layout .................................................................. 6

List of Figures

1 HPA528EVM Schematic .................................................................................................. 4

2 TPS61183EVM-528 Component Placement (Viewed from Top) ..................................................... 6

3 TPS61183EVM-528 Top Copper (Viewed from Top) .................................................................. 7

4 TPS61183EVM-528 Bottom Copper (Viewed from Bottom) .......................................................... 7

List of Tables

1 TPS61183EVM-528 Electrical and Performance Specifications...................................................... 2

2 Bill of Materials ............................................................................................................. 5

SLVU363–July 2010 TPS61183EVM-528

Summary of content (9 pages)

PAGE 1
User's Guide SLVU363 – July 2010 TPS61183EVM-528 This user's guide describes the characteristics, operation, and use of the TPS61183 evaluation module (EVM). This EVM contains Texas Instruments' TPS61183, a WLED power solution providing up to six independently regulated current outputs using a single inductor step-up (boost) converter. The current outputs are ideal for driving a WLED backlight in notebook/laptop computers.
PAGE 2
Applications 1 www.ti.com Applications Notebook and Monitor LCD display backlight 2 TPS61183EVM-528 Electrical Performance Specifications Table 1 provides a summary of the TPS61183EVM-528 performance specifications. All specifications are given for an ambient temperature of 25°C. Table 1. TPS61183EVM-528 Electrical and Performance Specifications Parameter Notes and Conditions (1) Min Typ Max Unit INPUT CHARACTERISTICS VIN Input Voltage 4.5 24 V En EN Logic high 2.
PAGE 3
Connector and Test Point Descriptions www.ti.com 4.1.4 J4 – 14-Pin Connector This header facilitates connecting the TPS61183EVM-528 to the WLEDEVM-260 or WLEDEVM-461, LED EVM boards. These boards must be ordered separately from the TPS61183EVM. 4.1.5 J5 – FPO This header is the connection for the fault protection output that will indicate fault conditions including OVP, OC, and OT. 4.1.6 J6 – GND This header connects to the board's ground plane. 4.1.
PAGE 4
Schematic and Bill of Materials 5 www.ti.com Schematic and Bill of Materials NOTE: \For Reference Only, See Table 2. Bill of Materials for Specific Values Figure 1.
PAGE 5
Schematic and Bill of Materials www.ti.com Table 2. Bill of Materials Count RefDes Value Description Size Part Number MFR 1 C1 4.7uF Capacitor, Ceramic, 25V, X7R, 10% 1206 Std Std 0 C2 Open Capacitor, Ceramic, 25V, X7R, 10% 1206 Std Std 1 C3 4.7uF Capacitor, Ceramic, 50V, X5R, 10% 1206 Std Std 0 C4 Open Capacitor, Ceramic, 50V, X5R, 10% 1206 Std Std 1 C5 1.
PAGE 6
Test Requirements and Setup www.ti.com 6 Test Requirements and Setup 6.1 Hardware Requirements This EVM requires an external power supply capable of providing up to 24V at 3A. If dimming via an external PWM signal is desired, then a function generator capable of providing a PWM signal between 100 Hz to 22 kHz is required to avoid screen flickering and maintain dimming linearity. 6.
PAGE 7
www.ti.com TPS61183EVM-528 Assembly Drawings and Layout Figure 3. TPS61183EVM-528 Top Copper (Viewed from Top) Figure 4.
PAGE 8
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 9
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.