EV7782DF-02 40W Class D Stereo Bridged Audio Amplifier Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV7782DF-02 is a stereo evaluation board for MPS’ MP7782 Class D Bridged Audio Amplifier. It 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 90% Efficiency 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 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-01A EVALUATION BOARD THD+N vs Output Power 100 THD+N (%) 10 1 0.1 0.01 0.1 1 10 OUTPUT POWER (W) 100 MP7782-EC01 Dimensions (L x W x H) 4.0” x 3.5” x 1.0” (10cm x 9cm x 2.5cm) Board Number EV7782DF-02A EV7782DF-02A 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-02A Rev. 1.0 10/19/2007 4 5 6 GND 3 IN2+ IN2- 2 IN1- EXTEN 1 IN1+ EXTEN + EN EN + + R24 C28 1nF R22 C10 1.5nF 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 PGND1 20 + AGND NIN1 PIN1 NC VCC2 10 9 8 7 6 5 4 3 2 1 VCC1 C33 15pF VCC2 D11 VCC2 C16 NS D10 D13 1N5819 C6 27pF VCC2 C34 NS C24 27pF D15 6.2V D14 MBRS130LTR D9 D5 1N5819 D3 MBRS130LTR VCC1 C19 NS 1N4148 D12 6.2V D16 1N4148 C32 2pF C15 pF VCC1 D7 6.2V D1 D2 1N5819 D3 MBRS130LTR VCC1 1N4148 D4 6.2V D8 1N4148 C14 2pF C1 NS C39 390pF C38 3.9nF C37 3.9pF C36 3.9pF C22 27pF C4 27pF EN EXTEN OUT1+ OUT1- SPKB D20 2.7V ZD SPKA JP1 Q2 VCC2 VCC1 6A FB2 6A FB1 Q1 D19 2.7V ZD + VCC EV7782_S01 D18 1N4148 D21 D17 12V ZD 1N4148 R36 Power Connector GND VCC EV7782DF-02A – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD EVALUATION BOARD SCHEMATIC + 2 EV7782DF-02A – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD EV7782DF-02A BILL OF MATERIALS Qty Ref Value 2 C10, C28 1nF Ceramic Capacitor, 50V, X7R 1µF Ceramic Capacitor, 16V, X5R 5 4 4 4 4 4 4 4 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 2pF 3.9nF 15pF 1µF 2.2µF 0.22µF 2 C9, C27 0.68µF 2 C3, C21 470µF 1 C45 100µF 1 CN1 6 4 D1, D8, D9, D16, D17, D18 D2, D5, D10, D13 Description Package Manufacturer P/N Distributor P/N 0603 TDK C1608X7R1H102K Digikey 445-1308-1-ND 0603 TDK C1608X5R1C105K Digikey 445-1416-1-ND Panasonic ECJ-1VC1H020C Panasonic ECJ-1VB1H392K TDK C1608C0G1H150J Digikey PCC020CVCT-ND Digikey PCC1779CT-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 Ceramic Capacitor, 50V, NPO Ceramic Capacitor, 50V, X7R Ceramic Capacitor, 50V, NPO 0603 Do Not Stuff 0603 Ceramic Capacitor, 25V, X7R Electrolytic Capacitor, 50V, NHG Film Capacitor, 50V, V-Series Film Capacitor, 50V, V-Series Electrolytic Capacitor, 25V, NHG Electrolytic Capacitor, 35V, NHG 6-Pin Header, 0.1" 0603 0603 1206 Radial Radial Radial Radial Radial Diode Switch, 75V, 200mW SOD323 Diodes Inc. 1N4148WS-7 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 BZT52C12SDICT-ND Digikey BZT52C2V7SDICTND 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 Diode Zener, 12V, 200mW SOD323 1 D19 Diode Zener, 2.7V, 200mW SOD323 Diodes Inc. BZT52C2V7S-7 1 D20 Diode Zener, 2.7V, 200mW SOD323 Diodes Inc. BZT52C2V7S-7 2 FB1, FB2 1 JP1 EV7782DF-02A Rev. 1.0 10/19/2007 Ferrite Bead, 6A SMB 1206 IR MBRS130LTR Diodes Inc. BZT52C12S-7 Steward HI1206T500R-00 3-Pin Header, 0.1" www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 3 EV7782DF-02A – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD EV7782DF-02A BILL OF MATERIALS (continued) Qty 4 Ref L1, L2, L3, L4 Value Description 10µH Inductor, 2.6A, 8RDY 1 Q1 Transistor, PNP, 40V 1 Q2 Transistor, NPN, 40V 4 5 9 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 R1, R8, R11, R19, R25 R10, R27, R28, R29 Package Manufacturer P/N Toko Radial A7040HN-100M Fairchild SOT-23 MMBT3906 Fairchild SOT-23 MMBT3904 Panasonic 0603 ERJ-3GEY0R00V Distributor P/N Digikey MMBT3906FSCT-ND Digikey MMBT3904FSCT-ND Digikey P0.0GCT-ND 0Ω Film Resistor, 5% 1kΩ Film Resistor, 5% 0603 Panasonic ERJ-3GEYJ102V Digikey P1.0KGCT-ND 10kΩ Film Resistor, 5% 0603 Panasonic ERJ-3GEYJ103V Digikey P10KGCT-ND 20kΩ Film Resistor, 5% 0603 Panasonic ERJ-3GEYJ203V Digikey P20KGCT-ND 20.5kΩ Film Resistor, 1% 0603 Panasonic ERJ-3EKF2052V Digikey P20.5KHCT-ND 100kΩ Film Resistor, 1% 0603 Panasonic ERJ-3EKF1003V Digikey P100KHCT-ND U1, U2 EV7782DF-02A Rev. 1.0 10/19/2007 5.1Ω Film Resistor, 5% Class D Audio Amplifier Panasonic ERJ-8GEYJ5R1V MPS TSSOP20 MP7782DF 1206 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. Digikey P5.1ECT-ND 4 EV7782DF-02A – 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-02A Rev. 1.0 10/19/2007 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 5 EV7782DF-02A – 40W CLASS D STEREO BRIDGED AUDIO AMPLIFIER EV BOARD QUICK START GUIDE This board is factory set for 24V operation. 1. Power Requirements a. Power supply: 24V. b. 0V to 1VRMS (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-02A Rev. 1.0 10/19/2007 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2007 MPS. All Rights Reserved. 6