Texas Instruments LP5813EVM Manuale utente

EVM User's Guide: LP5813EVM LP5812EVM

LP5813-12 Evaluation Module

Description

The LP5813/12 Evaluation Module showcases all the

features of the LP5813 and LP5812 4 × 3 matrix RGB

LED driver with autonomous control. The difference

between 2 devices is with or without synchronous

boost function. Both LP5813 and LP5812 are placed

on 1 board, please select the device which is needed

to be evaluated by USB2ANY connector and jumper

setting. And please select the right EVM version

according to different package (WSON/WCSP). The

graphical user interface or GUI called LP581x GUI

is used to interface with USB to the EVM by the

USB2ANY interface adapter.

Get Started

1. Request the LP5813-12 WCSP/WSON EVM from

ti.com according to the device package.

2. Request the LP5813 and LP5812 data sheet from

ti.com.

3. Download the LP581xGUI from ti.com.

4. Download the comprehensive reference design

files.

Features

• LP5813 Synchronous Boost 4 × 3 Matrix RGB LED

driver with autonomous control

• LP5812 4 × 3 Matrix RGB LED driver with

autonomous control

• I2C input and power supply from USB2ANY

interface adapter

• LP581x GUI is used to control the EVM

Applications

•Portable & wearable electronics: E-Cigarette,

Earbud & Charging case

•Gaming & home entertainment: Smart speaker,

RGB mouse, Video doorbell

•Industrial HMI: EV charger, Factory automation

Hardware Image

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LP5813-12 Evaluation Module 1

1 Evaluation Module Overview

1.1 Introduction

The LP5813/LP5812EVM can be converted for testing the LP5811/LP5810, which are from the same device

family, by removing the factory-installed device (U1/U2) and replacing with the LP5811/LP5810 counterpart.

When testing the LP5811 device, select the direct mode jumper setting and corresponding tag from the menu on

the GUI start page to start evaluation.

This user’s guide describes the characteristics, setup, and usage of the LP5813/LP5812 evaluation module

(EVM). The LP5813/LP5812EVM helps the user evaluate the features of the Texas Instruments LP5813

synchronous boost 4 × 3 matrix RGB LED driver and LP5812 4 × 3 matrix RGB LED driver, which integrate

autonomous control.

This document covers following topics:

• Hardware setup instructions

• Graphical user interface (GUI) instructions

• Printed-circuit board (PCB) layout drawings

• Schematic diagram

• Bill of materials

1.2 Kit Contents

The LP5813/12EVM kit includes the following materials and is illustrated in Figure 1-1.

• LP5813/LP5812 evaluation module

• USB2ANY interface adapter with ribbon cables and USB cable

Figure 1-1. LP5813/12EVM Kit

1.3 Specification

The evaluation module provides several inputs. The inputs are I2C signal input and power supplies for Vin. Vin is

provided by an external power supply or a USB2ANY interface adapter.

1.4 Device Information

The LP5813-12EVM is used to evaluate the characteristics, operation, and usage for LED driver LP5813/

LP5812. The LP5813 device is a high-performance and small-size device, which integrates synchronous boost

and autonomous engine, with time-cross-multiplexing (TCM) structure. LP5813 can drive up to 12 LED dots with

only 4 output pins. The difference between LP5813 and LP5812 is that LP5812 does not have boost function.

Typical application for LP5813 is shown in Figure 1-2.

Evaluation Module Overview www.ti.com

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LP5813

OUT0

OUT1

OUT2

OUT3

22 uF

10 uF

1 uH

0.5 V - 5.5 V

GND

OFF

VIN

SCL

SDA

SYNC

VOUT

MCU

VMCU

Red LED

Green LED

Blue LED

4.7kΩ4.7kΩ

Figure 1-2. LP5813 Simplified Schematic

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LP5813-12 Evaluation Module 3

2 Hardware

2.1 Setup

This section describes how to set up the LP5813-12EVM properly. Items from the following list are required to

begin evaluating the LP5813/LP5812:

• Computer

• LP5813-12EVM

• USB2ANY interface adapter

In the default jumper setting, the board can be evaluated by USB2ANY power directly and does not need an

external power supply. Setup connection is demonstrated in Figure 2-1. The setup procedure is as follows:

1. Connect the USB2ANY with the LP5813-12EVM using the ribbon cable.

2. Make sure all jumpers are properly set under the appropriate operating conditions. See more details in

Jumper Information.

3. Plug the USB cable into the USB port on the computer.

Figure 2-1. Hardware Connection

2.2 Jumper Information

Note

Only one device can be evaluated at a time. Select LP5813/LP5812 by the USB2ANY connector and

jnmper setting.

If LP5813 is under test, then please plug ribbon cable to USB2ANY_13 connector.

If LP5812 is under test, then please plug ribbon cable to USB2ANY_12 connector.

On the default jumper setting, users can evaluate LP5813 under the conditions below:

• Vin is provided by 3.3V from USB2ANY(Don't need external power supply).

• Synchronous boost is enabled.

• 4-SCAN TCM mode (Drive 12 LED dots with 4 outputs).

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Figure 2-2 shows the default jumper settings.

Figure 2-2. Default Jumper Setting

Users can follow the jumper setting instructions below to testthe LP5813/LP5812 under different operating

conditions.

Figure 2-3 shows the jumper setting for LP5813 in Direct mode and enable boost function without external power

supply.

Figure 2-3. LP5813 Direct Mode and Enable Boost without External Power Supply

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LP5813-12 Evaluation Module 5

Figure 2-4 shows the jumper setting for LP5813 in TCM mode and disable boost function.

Under this condition, the device needs to be powered by Vout instead of Vin.

Figure 2-4. LP5813 4-SCAN TCM Mode and Disable Boost with External Power Supply

Figure 2-5 shows the jumper setting for LP5812 in TCM mode without external power supply.

Figure 2-5. LP5812 4-SCAN TCM Mode without External Power Supply

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Figure 2-6 shows the jumper setting for LP5812 in Direct mode without external power supply

Figure 2-6. LP5812 Direct Mode without External Power Supply

Note

If the user wants to evaluate LP5813, then please connect J13-J16 and disconnect J33-J36. Each

output from LP5813/LP5812 cannot be connected to both J5 and J1. For example, if the user wants to

use Mix-Drive mode with 3-SCAN, and chose OUT3 as direct drive, then please connect OUT3 to J1

and OUT0/OUT1/OUT2 to J5. Please see Figure 2-7 for more details.

Figure 2-7. 3-SCAN Mix-Drive Mode

2.3 Power Supply

If the input current need to be measured, then an external VIN/VCC supply is recommended during evaluation.

1. Connect the USB2ANY to the LP5813-12EVM using the ribbon cable.

2. Connect a 1.8-5.5V external power supply to the VIN_EXT/VCC_EXT terminal (TP1 for LP5813/TP5 for

LP5812) and connect the switching jumper (J2/J4) to VIN_EXT.

3. If the user wants to evaluate LP5813 but disable the boost function, then please provide power supply from

Vout instead of VIN.

4. Plug the USB cable into the USB port on the computer.

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LP5813-12 Evaluation Module 7

3 Software

3.1 Software Description

LP581xGUI information will be updated after RTM.

Software www.ti.com

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4 Hardware Design Files

4.1 Schematics

Figure 4-1 shows the schematic of LED driver module.

Figure 4-1. Schematic of LED Driver Module

Figure 4-2 shows the schematic of LED Load module.

www.ti.com Hardware Design Files

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LP5813-12 Evaluation Module 9

Figure 4-2. Schematic of LED Load Module

Figure 4-3 shows the schematic of USB2ANY connector.

Hardware Design Files www.ti.com

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