LP5024EVM

User's Guide SLVUBB2 – March 2018 LP5024EVM User's Guide This user’s guide describes the characteristics, setup, and use of the LP5024EVM Evaluation Module (EVM). This EVM helps the user evaluate the features of the Texas Instruments LP5024, which is an I2C bus-controlled, 24-channel, constant-current LED driver. This user’s guide includes setup instructions, a schematic diagram, a bill of materials, printed-circuit board layout drawings, and software instructions. The LP5024EVM can be converted for testing the LP5018 device by removing the factory-installed device (U1) and replacing it with the LP5018 counterpart. Then when testing, select the corresponding LP5018 tag from the menu on the GUI home page (Figure 4) for the evaluation. 1 2 3 4 Contents What You Get ................................................................................................................ 2 What You Need In Addition ................................................................................................ 4 How to Get Started .......................................................................................................... 4 Board Layout ................................................................................................................ 14 List of Figures 1 LP5024EVM Kit .............................................................................................................. 2 2 LP5024EVM Key Connectors .............................................................................................. 3 3 LP5024EVM Hardware Setup .............................................................................................. 4 4 LP50 Family GUI Home Page 5 Landing Page of LP5024EVM GUI ........................................................................................ 5 6 LED Control Panel ........................................................................................................... 6 7 LP50 EVM GUI Connection Status ........................................................................................ 7 8 LP50xx Global Setting 9 10 11 12 13 14 15 16 17 18 ............................................................................................. 5 ...................................................................................................... 8 LED Color and Brightness Setting ......................................................................................... 9 Bank Management Entry .................................................................................................. 10 Bank Setting ................................................................................................................ 10 LED Lighting Pattern ...................................................................................................... 11 Register Map................................................................................................................ 12 Tool Bar ..................................................................................................................... 13 Top Assembly Layer ....................................................................................................... 14 Top Layer Routing ......................................................................................................... 15 Bottom Layer Routing (Mirrored) ......................................................................................... 16 LP5024EVM Schematic Diagram ........................................................................................ 17 List of Tables 1 LP5024EVM Parameters ................................................................................................... 3 2 Bill of Materials (BOM) ..................................................................................................... 18 Trademarks All trademarks are the property of their respective owners. SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 1 What You Get 1 www.ti.com What You Get The LP5024EVM kit (Figure 1) contains:. • USB2ANY – Ribbon cable – USB cable • LP5024EVM Figure 1. LP5024EVM Kit 2 LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated What You Get www.ti.com Figure 2 shows the key connectors used to operate LP5024EVM. Red LED Power Supply Selection I2C Address Setting Red LED Separated Supply Input VCC VMCU VLED Supply Connection External Power Supply Input EN PIN Connects to VMCU or I/O VLED Connects to External Supply or USB2ANY 3.3V USB2ANY Connector Figure 2. LP5024EVM Key Connectors Table 1. LP5024EVM Parameters PARAMETER RANGE VCC 3 V–5.5 V VLED 3 V–5.5 V VMCU 1.8 V, 3.3 V, 5 V Channel current 35 mA (maximum) Note: Channel current is set at 20 mA when the LED supply voltage is 5 V. Although the LP5024 device can withstand 6-V maximum LED supply voltage with 35 mA per channel, make sure that the PCB board thermal performance can meet the power dissipation requirement, because increased LED supply voltage increases channel output current. SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 3 What You Need In Addition 2 www.ti.com What You Need In Addition A PC on which to install the LP50 EVM GUI (click here to download software) DC supply or USB port for LED supply 3 How to Get Started 3.1 Hardware Setup Figure 3 shows the hardware setup of the LP5024EVM. • Connect a 5-V power supply to TP1 (VIN_EXT) and TP6 (GND). • Using the USB cable, connect the USB2ANY module to the PC. • Using the ribbon cable, connect the USB2ANY module to the LP5024EVM. x x 5V x DC Supply x x USB cable LP5024EVM USB2ANY Ribbon Cable VIN_EXT GND Figure 3. LP5024EVM Hardware Setup 3.2 Software Installation Download the GUI software from the product folder. After downloading, install the LP5024EVM GUI on the PC. A shortcut to the GUI is found on the desktop. A shortcut can also be found in the startup menu under the Texas Instruments folder. Figure 5 shows the landing page of the LP50 EVM GUI. The landing page contains the LP50xx introduction information and LP5024EVM information. Clicking the menu icon (≡) shows more information. 4 LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated How to Get Started www.ti.com Figure 4. LP50 Family GUI Home Page Figure 5. Landing Page of LP5024EVM GUI SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 5 How to Get Started 3.3 www.ti.com GUI Function Click the Quick Start button in the lower-right corner. The GUI displays a detailed LED control panel as shown in Figure 6. Figure 6. LED Control Panel 6 LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated How to Get Started www.ti.com 3.3.1 Connection Status Before using the GUI, make sure the connection status indicator at the bottom left corner isgreen, which means the USB2ANY is connected to the computer successfully. If the status indicator is red, try to reconnect the USB2ANY cable and restart the LP50 EVM GUI. Figure 7. LP50 EVM GUI Connection Status SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 7 How to Get Started 3.3.2 www.ti.com GUI Functions 3.3.2.1 Global Setting When all the LED outputs are inactive, the LP50xx device is able to enter power-save mode automatically, thus lowering idle-current consumption down to 10 μA (typical). Automatic power-save mode is enabled when register bit Power_Save_EN = 1 (default) and all the LEDs are off for a duration of >30 ms. Almost all analog blocks are powered down in power-save mode. If any I2C command to the device occurs, the LP50xx device returns to the NORMAL mode. Set the Power Saver switch to activate the function (see Figure 7). Figure 8. LP50xx Global Setting 8 LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated How to Get Started www.ti.com 3.3.2.2 RGB LED Color and Brightness Control Each output channel has its own individual 8-bit color-setting register (OUTx_COLOR). The device allows every RGB LED module to achieve >16 million (256 × 256 × 256) color-mixing. When color is fixed, the independent brightness-control is used to achieve accurate and flexible dimming control for every RGB LED module. Every three consecutive output channels are assigned to their respective brightness-control register (LEDx_BRIGHTNESS). The LP50xx device allows 256-step brightness control for each RGB LED module, which helps achieve a smooth dimming effect. For human-eye-friendly visual performance, a logarithmic-scale dimming curve is usually implemented in LED drivers. The LP50xx device, with independent color-mixing and brightness-control registers, implements the logarithmic scale dimming control inside the brightness control function, which solves the color distortion issue effectively. Also, the LP50xx device allows users to configure the dimming scale either logarithmically or linearly through the global Log_Scale_EN register. Click the Manage button, shown in Figure 9. to set the color and brightness. Figure 9. LED Color and Brightness Setting 3.3.2.3 Bank Management For most LED-animation effects, like blinking and breathing, all the RGB LEDs have the same lighting pattern. Instead of controlling the individual LED separately, which occupies the microcontroller resources heavily, the LP50xx device provides an easy coding approach, the LED bank control. Each channel can be configured as either independent control or bank control through the LEDx_Bank_EN register. When LEDx_Bank_EN = 0 (default), the LED is controlled independently by the related color-mixing and brightness-control registers. When LEDx_Bank_EN = 1, the LP50xx device drives the LED in LED bankcontrol mode. The LED bank has its own independent PWM control scheme, which is the same structure as the PWM scheme of each channel. See Out_x Color in the register map, Figure 13 for more details. When a channel is configured in LED bank-control mode, the related color mixing and brightness control is governed by the bank control registers (BANK_A_COLOR, BANK_B_COLOR, BANK_C_COLOR, and BANK_BRIGHTNESS) regardless of the inputs on its own color-mixing and brightness-control registers. SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 9 How to Get Started www.ti.com Figure 10. Bank Management Entry Figure 11. Bank Setting 10 LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated How to Get Started www.ti.com 3.3.3 Lighting Patterns The GUI also can run the preset lighting patterns and customize the lighting pattens by modifying some parameters. Figure 12. LED Lighting Pattern SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 11 How to Get Started 3.3.4 www.ti.com Register Map The register view appears when the Register icon is clicked. The register view provides the register values, field values, and descriptions. The registers can be operated directly through the input check box. Figure 13. Register Map Enter the desired hex value in the registers (Current Value column), perform a bit-wise configuration of any register fields by double-clicking on the corresponding register bit, or configure a register field by entering the desired value as hex in the Value column, binary in the Bits columns, or by using the input boxes for each field under FIELD VIEW to set values for the corresponding variables. Field View displays the description of all fields of the selected register. Each register can be read independently or all registers can be read at once by using the Read Register or Read All Registers button, respectively. The data is written to the registers in one of two ways, depending on the update mode (Immediate↓ or Deferred↓) button. Clicking the button toggles between the two modes. In Immediate mode, the register data is written immediately following a Current Value , an individual bit, or a Value change. In Deferred mode, the displayed data is written to all registers on depression of the Write Register button. Press the Read All Registers button to read back all the registers and update the values in this table. If any register value must be changed, simply double-click on the individual bit values to change the value in this table in immediate updated mode or press the Write Register button to write all the registers at a time if Deferred is selected instead of Immediate from the drop-down box. Register settings can be saved in text-file format by selecting Save Registers from the file menu. A register settings file in text-file format can be loaded and programmed automatically by selecting Load Register from the file menu. 12 LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated How to Get Started www.ti.com 3.3.5 Tool Bar Registers can be loaded and saved through the tool bar under the File menu. Figure 14. Tool Bar SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 13 Board Layout 4 www.ti.com Board Layout Figure 15. Top Assembly Layer 14 LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated Board Layout www.ti.com Figure 16. Top Layer Routing SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 15 Board Layout www.ti.com Figure 17. Bottom Layer Routing (Mirrored) 16 LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated Board Layout www.ti.com 4.1 Schematic Figure 18. LP5024EVM Schematic Diagram SLVUBB2 – March 2018 Submit Documentation Feedback LP5024EVM User's Guide Copyright © 2018, Texas Instruments Incorporated 17 Board Layout 4.2 www.ti.com BOM Table 2. Bill of Materials (BOM) DESIGNATOR 18 DESCRIPTION PART NUMBER QUANTITY AVX C1608JB0J106K080AB 1 Capacitor, ceramic, 1-µF, 25-V,±10%, X7R, 0603 AVX 06033C105KAT2A 2 C4 Capacitor, ceramic, 0.1-µF, 16-V, ±5%, X7R, 0603 AVX 0603YC104JAT2A 1 D1, D2, D3, D4, D5, D6, D7, D8 LED, RGB, SMD Avago ASMT-YTC2-0AA02 8 H1, H3, H5, H7 Standoff, hex, 0.5"L #4-40 nylon Keystone 1902C 4 H2, H4, H6, H8 Machine screw, round, #4-40 1/4, nylon, Philips pan head B&F Fastener Supply NY PMS 440 0025 PH 4 J1, J2, J3 Header, 100-mil, 2×1, gold, TH Samtec TSW-102-07-G-S 3 J4, J7 Header, 100-mil, 12×2, gold, TH Samtec TSW-112-07-G-D 2 J5 Header, 100-mil, 4×2, gold, TH Samtec TSW-104-07-G-D 1 J6, J8 Header, 100-mil, 3×1, gold, TH Samtec TSW-103-07-G-S 2 J9 Header, 100-mil, 3×2, gold, TH Samtec TSW-103-07-G-D 1 J10 Header, 100-mil, 5×2, gold, R/A, TH Samtec TSW-105-08-G-D-RA 1 R1, R2, R3 Resistor, 4.7-kΩ, 5%, 0.1-W, 0603 Vishay-Dale CRCW06034K70JNEA 3 R4 Resistor, 3.57-kΩ, 1%, 0.1-W, 0603 Yageo America RC0603FR-073K57L 1 SH1, SH2, SH3, SH4, SH5, SH6, SH7, SH8, SH9, SH10, SH11, SH12, SH13, SH14, SH15, SH16, SH17, SH18, SH19, SH20, SH21, SH22, SH23, SH24, SH25, SH26, SH27, SH28, SH29, SH30, SH31, SH32 Shunt, 100-mil, flash gold, black Sullins Connector Solutions SPC02SYAN 32 TP1, TP6, TP7, TP8 Terminal, turret, TH, double Keystone 1502-2 4 TP2 Test point, miniature, red, TH Keystone 5000 1 TP3 Test point, miniature, black, TH Keystone 5001 1 TP4, TP5 Header, 1×1, Tin, TH Samtec TMS-101-02-T-S 2 U1 24-channel I2C constant-current RGB LED driver, RSM0032B (VQFN-32) Texas Instruments LP5024RSM 1 C1 Capacitor, ceramic, 10-µF, 6.3-V, ±10%, JB, 0603 C2, C3 MANUFACTURER LP5024EVM User's Guide SLVUBB2 – March 2018 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are developing applications that incorporate TI products; by downloading, accessing or using any particular TI Resource in any way, you (individually or, if you are acting on behalf of a company, your company) agree to use it solely for this purpose and subject to the terms of this Notice. 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