TAS5421EVM

User's Guide SLOU365 – July 2014 TAS5421EVM User's Guide The TAS5421-Q1 evaluation module (EVM) is intended to demonstrate the capabilities of the TAS5421Q1 device. All the device features can be accessed through the hardware and the software graphical user interface (GUI) which is supplied. This user's guide contains a description of the EVM and the GUI. The schematic, bill of materials (BOM), and board layout are included. 1 Hardware Overview The TAS5421EVM showcases TI's TAS5421-Q1 analog input class-D closed-loop mono amplifier. The EVM is usable as stand-alone platform with default I2C register settings. The EVM runs in default I2C register settings. The EVM can also work with a USB2IIC-2 board and TAS5421-Q1 GUI for programming the I2C register settings. Figure 1. TAS5421EVM SLOU365 – July 2014 Submit Documentation Feedback TAS5421EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 1 Hardware Overview 1.1 TAS5421EVM Features • • • 1.2 www.ti.com Runs without I2C initialization Has GUI control via USB port Passes EMC CISPR 25, class 5 TAS5421EVM Gain The gain setting for TAS5421-Q1 device is I2C programmable. The four gain options are 20 dB, 26 dB, 32 dB, and 36 dB. Set the gain by modifying I2C control register 0x03. By default, the gain is 26 dB. 1.3 TAS5421EVM PWM Switching Frequencies The PWM switching frequency is I2C programmable. The two f(SW) options are 400 kHz and 500 kHz. Programming the frequency in control register 0x03 is via the GUI and IIC2USB-2 board. By default, f(SW) is 400 kHz. 1.4 TAS5421EVM SpeakerGuard™ Protection Circuitry The SpeakerGuard protection circuitry is programmable for different voltage levels. Programming the levels in control register 0x03 via the GUI and IIC2USB-2 board. The control register shows the default value for the SpeakerGuard protection-circuitry voltage level. Table 1. Control Register 2 D7 D6 D5 D4 D3 D2 D1 D0 FUNCTION 0 1 1 1 1 0 0 0 26-dB gain, f(SW) set to 400 kHz, SpeakerGuard protection circuitry is set to maximum voltage. — — — — — — — 1 f(SW) set to 500 khz — — — — — 1 1 — RESERVED — — 1 1 0 — — — SpeakerGuard protection circuitry is set to 14-V peak output. — — 1 0 1 — — — SpeakerGuard protection circuitry is set to 11.8-V peak output. — — 1 0 0 — — — SpeakerGuard protection circuitry is set to 9.8-V peak output. — — 0 1 1 — — — SpeakerGuard protection circuitry is set to 8.4-V peak output. — — 0 1 0 — —- — SpeakerGuard protection circuitry is set to 7-V peak output. — — 0 0 1 — — — SpeakerGuard protection circuitry is set to 5.9-V peak output. — — 0 0 0 — — — SpeakerGuard protection circuitry is set to 5-V peak output. 0 0 — — — — — — Set gain to 20 dB. 0 1 — — — — — — Set gain to 32 dB. 1 1 — — — — — — Set gain to 36 dB. TAS5421EVM User's Guide SLOU365 – July 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated TAS5421EVM Setup www.ti.com 2 TAS5421EVM Setup This section describes the TAS5421EVM setup and software installation. USB Cable PC – Win OS TAS5421 GUI PSU – 12VDC PS2 Cable Speaker Cable SPEAKER Mono Audio Source A010 Figure 2. TAS5421EVM Connection Hardware requirements (see Figure 2): • Computer running Windows XP, Windows 7, or Windows 8 • Power supply unit (PSU) 5–18 VDC • Speakers and cable (provided) • USB cable (provided) • PS2 cable (provided) • USB2IIC-2 board (provided) • Audio source: analog RCA input Hardware setup: 1. Connect the 6-pin cable to the TAS5421EVM on one end and to the USB2IIC-2 board on the other (see Figure 2). 2. Plug in the USB cable from the PC to the USB2IIC-2 board (shown in Figure 3). The 3.3-V and USB LINK LEDs light. The I2C LEDs (SDA/SCL) on the USB2IIC-2 board are blinking (colored boxes in Figure 3). 3. Connect the I/O cable (see Figure 2): • PSU: red(+)-black(–) pair to PSU • The speaker: white-red pair to speakers • The audio input: yellow-orange audio input source • Leave the black wire on the I/O cable unconnected or connect it to ground. 4. Connect the PSU to the TAS5421EVM and turn on the power. The 3.3-V LED (D1 on the EVM board) lights (see Figure 1). 5. Set switch S1 to OPERATION and S2 to UNMUTE (see Figure 1). NOTE: The TAS5421EVM can run without a USB2IIC-2 board. SLOU365 – July 2014 Submit Documentation Feedback TAS5421EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 3 Software Installation www.ti.com USB Cable PS2 Cable A002 Figure 3. USB2IIC-2 Board 3 Software Installation The TAS5421-Q1 GUI is available on the product folder by clicking on Tools and Software tab to obtain the latest release of the GUI. Execute the GUI installation program, TAS5421-Q1 GUI Setup.exe. After the program is installed, run the TAS5421 EVM GUI. Figure 4 shows the start-up GUI image. The GUI displays the fault register when first started. I2C data is polling by default. The I2C device address for the TAS5421-Q1 device is D8. Green USB and I2C LEDs show that USB is connected and I2C communication is valid. A003 Figure 4. GUI Image at Start-Up 4 TAS5421EVM User's Guide SLOU365 – July 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Using the GUI With the TAS5421EVM Board www.ti.com 4 Using the GUI With the TAS5421EVM Board The TAS5421EVM does not need initialization. On powering up, the device goes into load diagnostics. If there is no problem, the device goes into play mode with the following default values are set: • Gain: 26 dB • f(SW): 400 kHz • SpeakerGuard protection circuitry: Maximum voltage level 4.1 Checking the Fault Register When the GUI first runs, the Register Detail box displays the fault register. The GUI runs with I2C data polling as the default setting, clearing any previous faults after the first poll. If any fault condition is still active after device goes into play mode, with the exception of open load, the device enters the loaddiagnostics mode. A004 Figure 5. Fault Register SLOU365 – July 2014 Submit Documentation Feedback TAS5421EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 5 Using the GUI With the TAS5421EVM Board 4.2 www.ti.com Checking the Status Register Figure 6 shows the status register. Click on Status-Diag (Read-Only) (0x02), shown in Figure 6 (blue boxes for illustration only, not shown on GUI) and the register detail appears in the middle box. A005 Figure 6. Status Register 4.3 Checking and Changing the Control Register Figure 7 shows the control register. In this register, one can change the default values for f(SW), SpeakerGuard protection circuitry, and gain. Select the desired check boxes; then click apply to update the device status box. A006 Figure 7. Control Register 6 TAS5421EVM User's Guide SLOU365 – July 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Using the GUI With the TAS5421EVM Board www.ti.com 4.4 2 Read and I C Log The I2C log displays I2C registers read data (see Figure 8). An option exists for reading the three registers all at once or individually. Pressing the Read Faults button displays the fault register value on the I2C log as well. Starting the GUI enables the I2C log. An option is available to turn off logging on the pulldown I2C Log menu. A007 2 Figure 8. Read and I C Log 4.5 I2C Polling As mentioned above, the I2C polling is on when the GUI starts. To disable I2C polling, click on I2C polling pulldown tab and unselect the check box. The polling time can also be changed as shown in Figure 9. A008 2 Figure 9. I C Polling SLOU365 – July 2014 Submit Documentation Feedback TAS5421EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 7 Board Layouts, Bill of Materials, and Schematic 5 Board Layouts, Bill of Materials, and Schematic 5.1 TAS5421EVM Board Layouts www.ti.com Figure 10 and Figure 11 show the board layouts for the EVM. Figure 10. TAS5421EVM Top View A009 Figure 11. TAS5421EVM Bottom View 8 TAS5421EVM User's Guide SLOU365 – July 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Board Layouts, Bill of Materials, and Schematic www.ti.com 5.2 Bill of Materials Table 2 lists the BOM for this EVM. Table 2. Bill of Materials ITEM MFR PART NO. MFR QTY REF DESIGNATORS DESCRIPTION 1 GRM188R71E104KA01D MuRata 3 C1, C6, C19 Capacitor, ceramic, 0.1-µF, 25V, ±10%, X7R, 0603 2 GRM188R71H222KA01D MuRata 1 C2 Capacitor, ceramic, 2200-pF, 50-V, ±10%, X7R, 0603 3 GRM188R71E823KA01D MuRata 1 C3 Capacitor, ceramic, 0.082-µF, 25-V, ±10%, X7R, 0603 4 GRM31CR71E475KA88L MuRata 2 C4, C5 Capacitor, ceramic, 4.7-µF, 25V, ±10%, X7R, 1206 5 GRM31CR71E106KA12L MuRata 1 C7 Capacitor, ceramic, 10-µF, 25V, ±10%, X7R, 1206 6 UBT1E331MPD1TD Nichicon 1 C8 Capacitor, AL, 330-µF, 25-V, ±20%, 0.075-Ω, TH 7 GRM21BR71E105KA99L MuRata 3 C9, C16, C21 Capacitor, ceramic, 1-µF, 25-V, ±10%, X7R, 0805 8 GRM188R71E224KA88D MuRata 2 C10, C14 Capacitor, ceramic, 0.22-µF, 25-V, ±10%, X7R, 0603 9 GRM21BR71E335KA73L MuRata 2 C11, C17 Capacitor, ceramic, 3.3-µF, 25V, ±10%, X7R, 0805 10 GRM188R71E103KA01D MuRata 2 C12, C18 Capacitor, ceramic, 0.01-µF, 25-V, ±10%, X7R, 0603 11 GRM188R72E471KW07D MuRata 2 C13, C15 Capacitor, ceramic, 470-pF, 250-V, ±10%, X7R, 0603 12 LTST-C190CKT Lite-On 1 D1 LED, Red, SMD 13 LTST-C171GKT Lite-On 1 D2 LED, Green, SMD 14 SJ5382 3M 4 H1, H2, H3, H4 Bumpon, hemisphere, 0.25 × 0.075, clear 15 MD-60SM CUI Inc. 1 J1 Receptacle, 6x1_3MH, R/A, TH 16 1778670 Phoenix Contact 1 J2 Header, 7x1, 2.5-mm, TH 17 SER1360-103KLB Coilcraft 1 L1 Inductor, shielded E core, ferrite, 10-µH, 7.2-A, 0.01-Ω, SMD 18 7G08B-220M-R Sagami Elec Co Ltd 1 L2 Coupled inductor, 22-µH, 3-A, 69-Ω, ±20%, SMD 19 RC0603FR-074K7L Yageo America 4 R1, R2, R8, R9 Resistor, 4.70 kΩ, 1%, 0.1-W, 0603 20 CRCW0603499RFKEA Vishay-Dale 2 R3, R10 Resistor, 499-Ω, 1%, 0.1-W, 0603 21 CRCW08055R60JNEA Vishay-Dale 2 R4, R7 Resistor, 5.6-Ω, 5%, 0.125-W, 0805 22 CRCW080549K9FKEA Vishay-Dale 2 R5, R6 Resistor, 49.9-kΩ, 1%, 0.125W, 0805 23 B12AP NKK Switches 2 S1, S2 Switch, toggle, SPDT, 28-V 24 TAS5421QPWPRQ1 Texas Instruments 1 U1 10-W mono automotive digital amplifier with diagnostics, PWP0016A 25 UA78M33CDCY Texas Instruments 1 U2 Positive voltage regulator, DCY0004A SLOU365 – July 2014 Submit Documentation Feedback TAS5421EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 9 Board Layouts, Bill of Materials, and Schematic 5.3 www.ti.com TAS5421EVM Schematic Figure 12 shows the TAS5421EVM schematic. 3.3V 3.3V PVDD L1 U2 3 OUTPUT 4 COMMON C1 0.1µF D2 Green INPUT COMMON GND 7 6 5 4 3 2 1 2 C19 0.1µF UA78M33CDCY GND J2 1 GND C2 2200pF GND GND C3 0.082µF C4 4.7µF GND GND C5 4.7µF GND R10 499 GND OUTN GND OUTP C12 0.01µF C18 0.01µF INP INM PVDD GND C9 GND INP 1µF R5 49.9k U1 R1 4.70k R2 4.70k 7 INM BSTP IN_N OUTP 5 4 2 8 14 3.3V S1 3 3 2 R8 C20 1µF 4.70k 1 GND GND 15 OUTN C10 13 0.22µF 12 R4 5.6 C11 3.3µF C13 4 1 2 3 4 5 6 GND GND PVDD 1µF MD-60SM GND IN_P C16 J1 MH3 MH2 MH1 6 SCL SDA OUTN BSTN STANDBY MUTE FAULT BYP GND GND GND PAD 3 GND R6 49.9k 11 470pF C14 L2 GND 10 22µH 0.22µF 16 9 1 C15 GND 2 3.3V C8 330µF C7 10µF 1 3.3V C6 0.1µF 470pF R7 5.6 TAS5421QPWPRQ1 GND OUTP STANDBY C17 3.3µF B12AP GND GND 3.3V R3 3.3V GND 499 S2 Red MUTE 1 D1 2 R9 4.70k 3 B12AP GND Figure 12. TAS5421EVM Schematic 10 TAS5421EVM User's Guide SLOU365 – July 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms and conditions of sale of semiconductor products. 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