EV7782DF-02B 40W Class D Stereo Bridged Audio Amplifier Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV7782DF-02B is a stereo evaluation board for MPS’ MP7782 Class D Bridged Audio Amplifier. MP7782 is a second generation, fully integrated audio amplifier which dramatically reduces solution size by integrating four 180mΩ Power MOSFETs in a space saving TSSOP20 Package. It utilizes a full bridge output structure capable of delivering 40W into 8Ω speakers. As in all other MPS Class D Audio Amplifiers, this device exhibits the high fidelity of a Class AB amplifier with an efficiency of 90%. The circuit is based on the MPS’ proprietary variable frequency modulation topology (patents pending) that delivers excellent PSRR, fast response time and operates on a single power supply. • ELECTRICAL SPECIFICATIONS Parameter Supply Voltage Symbol Value Units VDD 9.5 to 24 V • • • • • • • • • • 2 x 40W Peak, 2 x 30W Continuous into 8Ω with VDD = 24V 93% Efficiency (VDD=24V,RLOAD=8Ω, POUT=40W) THD+N = 0.1% 9.5V to 24V Supply Voltage Operation Full Bridge Output Drive 4 Integrated 180mΩ Switches Turn-On / Turn-Off Click and Pop Suppression Integrated Short Circuit Protection Integrated Thermal Shutdown Mute / Standby Mode Thermally Enhanced TSSOP20F Package with Exposed Pad APPLICATIONS • • • • • • Flat Panel LCD and PDP Displays Notebook and Multimedia Computers Televisions and Home Stereos DVD and VCD Players Game Devices and Systems Subwoofer “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. EV7782DF-02B EVALUATION BOARD THD+N (%) 20 10 1 0.1 0.01 0.1 1 10 OUTPUT POWER (W) Dimensions (L x W x H) 2.2” x 1.8” x 0.6” (5.7cm x 4.5cm x 1.5cm) Board Number EV7782DF-02B EV7782DF-02B Rev. 1.0 10/19/2007 MPS IC Number 2 x MP7782DF www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 1 EV7782DF-02B Rev. 1.0 10/19/2007 4 5 6 GND 3 IN2+ IN2- 2 IN1- EXTEN 1 IN1+ EXTEN + EN EN R24 R22 EN + + www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 10 9 8 7 6 5 4 3 2 1 EN AGND PIN2 NIN2 EN NC NC 11 BS2 12 VPP 13 SW2 14 NC 11 BS2 12 VPP 13 SW2 14 PGND 15 NC 16 BS1 17 VPP 18 SW1 19 PGND1 20 AGND NIN1 PIN1 NC NC 16 PGND 15 + AGND PIN2 NIN2 EN NC BS1 17 VPP 18 SW1 19 PGND 20 + AGND NIN1 PIN1 NC VCC2 10 9 8 7 6 5 4 3 2 1 VCC1 D16 1N4148 VCC2 D9 1N4148 VCC1 D1 1N4148 D4 6.2V D2 1N5819 D5 1N5819 D14 MBRS130LTR VCC2 D13 1N5819 D10 D11 VCC2 C16 NS D6 MBRS130LTR VCC1 D3 MBRS130LTR VCC1 C4 15pF EN EXTEN OUT1+ OUT1- SPKB JP1 Q2 VCC2 VCC1 SPKA 6A FB2 6A FB1 Q1 + VCC D18 1N4148 D17 1N4148 R36 Power Connector GND VCC EV7782DF-02B – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD EVALUATION BOARD SCHEMATIC + 2 EV7782DF-02B – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD EV7782DF-02B BILL OF MATERIALS Qty 4 5 9 Ref R2, R9, R12, R20 R5, R16, R34, R33, R35 R4, R6, R15, R17, R22, R24, R36, R38, R39 8 R3, R7, R14, R18, R21, R23, R30, R31 1 R26 5 4 2 5 4 4 4 4 4 4 4 R1, R8, R11, R19, R25 R10, R27, R28, R29 Value Package Manufacturer P/N Panasonic ERJ-3GEY0R00V Distributor P/N Digikey P0.0GCT-ND 0Ω Film Res., 5% 603 1kΩ Film Res., 5% 603 Panasonic ERJ-3GEYJ102V 10kΩ Film Res., 5% 603 Panasonic ERJ-3GEYJ103V Digikey P10KGCT-ND 20kΩ Film Res., 5% 603 Panasonic ERJ-3GEYJ203V Digikey P20KGCT-ND 20.5kΩ Film Res., 1% 603 Panasonic ERJ-3EKF2052V Digikey P20.5KHCT-ND 100kΩ Film Res., 1% 603 Panasonic ERJ-3EKF1003V C10, C28 C8, C13, C18, C26, C31 C6, C14, C24, C32 C36, C37, C38, C39 C4, C15, C22, C33 C1, C16, C19, C34 C5, C11, C23, C29 C7, C12, C25, C30 C2, C17, C20, C35 Description 10Ω Film Res., 5% 1206 1nF Ceramic Cap., 50V, X7R 603 1µ F Ceramic Cap., 16V, X5R 603 2pF Ceramic Cap., 50V, NPO 603 390pF Ceramic Cap., 50V, X7R 603 15pF Ceramic Cap., 50V, NPO 603 Do Not Stuff 603 1µ F Ceramic Cap., 25V, X7R 1206 2.2µF Electrolytic Cap., 50V, NHG Radial 0.22µF Film Cap., 50V, V-Series Radial 2 C9, C27 0.68µF Film Cap., 50V, V-Series Radial 2 C3, C21 470µF Electrolytic Cap., 25V, NHG Radial 1 C45 100µF Electrolytic Cap., 35V, NHG Radial EV7782DF-02B Rev. 1.0 10/19/2007 Panasonic ERJ-8GEYJ10RV TDK C1608X7R1H102K TDK C1608X5R1C105K Digikey P1.0KGCT-ND Digikey P100KHCT-ND Digikey P10ECT-ND Digikey 445-1308-1-ND Panasonic ECJ-1VC1H020C Panasonic ECJ-1VC1H391J TDK C1608C0G1H150J Digikey 445-1416-1-ND Digikey PCC020CVCT-ND Digikey PCC391ACVCT-ND Digikey 445-1271-1-ND TDK C3216X7R1E105K Panasonic ECA-1HHG2R2 Panasonic ECQ-V1H224JL Panasonic ECQ-V1H684JL Panasonic ECA-1EHG471 Panasonic ECA-1VHG101 Digikey 445-1381-1-ND Digikey P5564-ND Digikey P4667-ND Digikey P4673-ND Digikey P5543-ND Digikey P5551-ND www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 3 EV7782DF-02B – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD EV7782DF-02B BILL OF MATERIALS (continued) Qty 1 6 4 Ref CN1 D1, D8, D9, D16, D17, D18 D2, D5, D10, D13 Value Description 6-Pin Header, 0.1" Package Diode Switch, 75V, 200mW SOD323 Diodes Inc. 1N4148WS-7V Digikey 1N4148WSDICT-ND Diode Schottky, 40V, 1A SOD123 Diodes Inc. 1N5819HW-7 SOD323 Diodes Inc. BZT52C6V2S-7 Digikey 1N5819HWDICT-ND Digikey BZT52C6V2SDICTND Digikey MBRS130LCT-ND Digikey BZT52C12SDICTND Digikey BZT52C2V7SDICTND Digikey 240-1009-1-ND 4 D4, D7, D12, D15 Diode Zener, 6.2V, 200mW 4 D3, D6, D11, D14 Diode Schottky, 30V, 1A 1 D21 2 Manufacturer P/N SMB IR MBRS130LTR Diode Zener, 12V, 200mW SOD323 Diodes Inc. BZT52C12S-7 D19, D20 Diode Zener, 2.7V, 200mW SOD323 Diodes Inc. BZT52C2V7S-7 2 FB1, FB2 Ferrite Bead, 6A 1 JP1 4 L1, L2, L3, L4 1 1206 Steward HI1206T500R-00 Inductor, 2.6A, 8RDY Radial Toko A7040HN-100M Q1 Transistor, PNP, 40V SOT-23 Fairchild MMBT3906 1 Q2 Transistor, NPN, 40V SOT-23 Fairchild MMBT3904 2 U1, U2 TSSOP20 MPS MP7782DF EV7782DF-02B Rev. 1.0 10/19/2007 Distributor P/N 3-Pin Header, 0.1" 10µH Class D Audio Amplifier www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. Digikey MMBT3906FSCTND Digikey MMBT3904FSCTND 4 EV7782DF-02B – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD TYPICAL PERFORMANCE CHARACTERISTICS THD+N vs. Output Power 20 10 0.1 THD+N vs. Frequency VDD=24V, RLOAD Frequency=100Hz&1kHz&10kHz 20 10 1 1kHz THD+N (%) 1 THD+N (%) THD+N (%) 20 10 THD+N vs. Output Power VDD=24V, RLOAD Frequency=1kHz 10kHz 0.1 VDD=24V, RLOAD PO =1W 1 0.1 100Hz 0.01 0.1 1 0.01 10 0.1 OUTPUT POWER (W) 0.01 20 10 OUTPUT POWER (W) 100 1k 10k FREQUENCY (Hz) Frequency Response FFT Noise Floor IHF-IMD VDD=24V, RLOAD PO =1W VDD=24V, RLOAD A-wtd VDD=24V RLOAD AMPLITUDE(DBV) +2 0 -2 -4 -6 0 0 -20 -20 AMPLITUDE(DBV) +4 AMPLITUDE(DBr) 1 -40 -60 -80 -100 -60 -80 -100 -120 -120 -8 -40 -10 10 100 1k 10k 40k 2k FREQUENCY (Hz) 8k 10k 12k 14k 16k 18k 20k 100 1k 10k 20k FREQUENCY (Hz) Output Power vs. VDD Efficiency vs. Output Power Crosstalk VDD=24V, RLOAD Frequency=1kHz THD=1%&10% RLOAD Frequency=1kHz 100 50 90 -40 -60 -80 -100 80 OUTPUTPOWER(W) -20 EFFICIENCY (%) AMPLITUDE(DBV) 6k FREQUENCY (Hz) VDD=24V RLOAD 0 4k 70 60 50 40 30 20 -120 40 30 THD=10% 20 THD=1% 10 20 100 1k FREQUENCY (Hz) EV7782DF-02B Rev. 1.0 10/19/2007 10k 0 0 10 20 30 40 50 0 10 15 OUTPUT POWER (W) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 20 25 30 V DD (V) 5 EV7782DF-02B – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Bottom Silk Layer Figure 4—Bottom Layer EV7782DF-02B Rev. 1.0 10/19/2007 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 6 EV7782DF-02B – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD QUICK START GUIDE Figure 5—EV7782DF-02B Connection Diagram This board is factory set for 24V operation. 1. Power Requirements a. Power supply: 24V. b. 0V to 2VRMS (max) audio signal source. c. Speaker: 8Ω or greater load resistance. 2. Setup Conditions a. Connect the outputs to the external speakers. b. Adjust the power supply to 24V, (do not turn on). c. Connect the power supply to the VDD terminals. d. Disable the amplifier by removing the enable jumper JP1. e. Connect the audio input signal source to the amplifier inputs (IN1, IN2). f. Turn on the power supply to apply power to the board. 3. Music Turn-On Sequence a. Enable the amplifier by placing jumper JP1. b. Audio should be heard from the speaker(s) 4. Music Turn-Off Sequence a. Set the enable switch to the DISABLE position, again by removing jumper JP1. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV7782DF-02B Rev. 1.0 10/19/2007 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 7