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User's Guide
SLOU283–February 2010
TPA2028D1YZFEVM
Contents
1 Introduction .................................................................................................................. 1
2 Operation ..................................................................................................................... 2
3 TPA2028D1YZFEVM Schematic ......................................................................................... 7
4 TPA2028D1YZFEVM PCB Layers ...........................
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Operation www.ti.com 1.2 TPA2028D1YZFEVM Specifications V Supply voltage range –0.3 V to 6 V DD I Supply current 2 A Maximum DD P Continuous output power per channel, 8 Ω, Vdd = 5.0 V, THD + N = 10% 1.7 W o V Audio Input Voltage 0.5 V to V - 0.5 V I DD RL Minimum load impedance 8 Ω 2 Operation The TPA2028D1YZFEVM can be evaluated in a stand-alone mode or when connected to existing circuits 2 with I C controls. 2.1 Quick Start List for Stand-Alone Operation A desktop or laptop computer with Windo
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www.ti.com Operation 5. Powering the EVM: • The EVM can be powered via USB connection or by external power supply: (a) Via USB power: Install shunt for USBPWR if USB power is used. (b) External power supply: connect an external regulated power supply adjusted for 2.5 V–5.5 V to the VDD and GND banana jacks, taking care to observe marked polarity. Make sure USBPWR is removed in this case. Note: (a) USB interface may not be able to provide enough current. For best audio performance, use external p
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Operation www.ti.com 2.1.3 Using the Software 1. Start the TPA2028D1 Interface by clicking the Start menu and clicking on the TPA2028D1 Interface icon. Figure 3. Starting the Software 2. The TPA2028D1 software interface is as shown in Figure 4. 4 TPA2028D1YZFEVM SLOU283–February 2010 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated
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www.ti.com Operation Figure 4. Software Interface NOTE: The TPA2028D1 powers up with the amplifier in software shutdown. To hear an output, uncheck shutdown. 3. Uncheck and check SPK_EN to place the Class-D output in and out of CHANNEL SHUTDOWN. 4. Click Shutdown to place the TPA2028D1 in and out of SOFTWARE SHUTDOWN. 5. Adjust the Attack Time, Release Time and Hold Time by sliding the bar or clicking the tap in the GUI. You can also type a value in the box; in that case, the value will be round
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Operation www.ti.com • Save Script can record the current register values. Select Save Script >> Click the folder icon to browse to the place where you want to save the script >> name the file in text format, then select OK to save. • Load Script can load the previously saved script to program the entire register file. Select Load Script >> Click the folder icon to browse to the place where the script is located >> Select the file then click OK >> Click Load. 2 2 • I2C interface can program indi
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www.ti.com TPA2028D1YZFEVM Schematic 3 TPA2028D1YZFEVM Schematic Figure 6. TPA2028D1YZFEVM – YZF-Device Schematic, Page 1 7 SLOU283–February 2010 TPA2028D1YZFEVM Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated USB+ Vdd USBPWR USB+ +3.3VD VDD 0603 R1 S1 C8 100K 10ufd/6.3V 1206 C21 GND R16 0603 DNP 0.0 GND 0805 GND D Q1 MEASUREMENTFILTER GND G P1.0 S BSS138ZXCT White FROMTAS1020 R2 SOT23-DBV3 DNP TPOUTP 1.0K C6 0805 White FROMCONTROLLERJ3 GND FB1 4700pfd/50V SCL 0805
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TPA2028D1YZFEVM Schematic www.ti.com Figure 7. TPA2028D1YZFEVM – YZF-Device Schematic, Page 2 8 TPA2028D1YZFEVM SLOU283–February 2010 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated J3 +3.3VD +3.3VD R5 R13 100K 0603 +3.3VD 2.00K 0603 U2 JP4 R6 C11 C12 2.00K GND 0603 33pfd/50V 33pfd/50V GND 0603 0603 Y1 6.00MHz 24LC64-I/SN GND C13 100pfd/50V 0603 HC49/US SOP8-D(SOIC) C14 1000pfd/50V R10 GND 0603 3.09K 0603 +3.3VD +3.3VD J2 R7 0603 1.50K Case TAS1020BPFB Case GND R8
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www.ti.com TPA2028D1YZFEVM PCB Layers 4 TPA2028D1YZFEVM PCB Layers BD Figure 8. TPA2028DYZF1EVM – YZF-Device Top Layer BD Figure 9. TPA2028D1YZFEVM – YZF-Device Bottom Layer 9 SLOU283–February 2010 TPA2028D1YZFEVM Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated
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TPA2028D1YZFEVM Parts List www.ti.com 5 TPA2028D1YZFEVM Parts List Table 1. Bill of Materials for TPA2028D1YZFEVM Ref Des Description QTY MFR Part No. MFR Vendor Part No. Vendor TI SEMICONDUCTORS U5 1.7 W Mono speaker driver W/AGC I2C CTRL, 1 TPA2028D1YZF Texas TPA2028D1YZF Texas WCSP9-YZF ROHS Instruments Instruments VR1 VOLT REG 3.3V 500mA LDO fast transient response 1 TPS77533D Texas 296-2776-5 Digi-Key SOP8-D ROHS Instruments U4 USB Streaming controller TQFP48-PFB ROHS 1 TAS1020BPFB Texas 29
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www.ti.com TPA2028D1YZFEVM Parts List Table 1. Bill of Materials for TPA2028D1YZFEVM (continued) Ref Des Description QTY MFR Part No. MFR Vendor Part No. Vendor TESTPOINTS AND SWITCHES SCL, SDA, PC Testpoint, white, ROHS 4 5002 Keystone 5002K Digi-Key TP OUTM, Electronics TP OUTP TP GND PC Testpoint, black, ROHS 1 5001 Keystone 5001K Digi-Key Electronics S1, S2 Switch, MOM, 160G SMT 4X3MM ROHS 2 TL1015AF160QG E-Switch EG4344CT Digi-Key SHUNTS JP2, JP4 Shunt, black AU Flash 2mmLS 2 810-002-SP2L00
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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. As such, the goods being provided are not intended to be
