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| EV7782DF-00A 50W Class D Mono Bridged Audio Amplifier Evaluation Board The Future of Analog IC Technology DESCRIPTION The EV7782DF-00A is the demo board for the MP7782, a Mono, 50W Class D Audio Amplifier. It is one of MPS' second generation of fully integrated audio amplifiers which dramatically reduces solution size by integrating four 180m Power MOSFETs in a space saving TSSOP20 Package. It utilizes a full bridge output structure capable of delivering 50W into 6 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. FEATURES * * * * * * * * * * * 50W into 6 with VDD = 24V @ 10% THD+N 90% Efficiency Typical THD+N = 0.06% @ 1W 9.5V to 24V Supply Voltage Operation Full Bridge Output Drive 4 Integrated 180m 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 Flat Panel LCD and PDP Displays Notebook and Multimedia Computers Televisions Home Stereos DVD and VCD Players Game Devices and Systems Subwoofer APPLICATIONS * * * * * * * ELECTRICAL SPECIFICATIONS Parameter Supply Voltage Symbol VDD Value 9.5 to 24 Units V "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc. EV7782DF-00A EVALUATION BOARD 100 10 THD+N (%) 1 0.1 0.01 0.1 1 10 OUTPUT POWER (W) 100 EV7782-EC01 (L x W x H) 4.0" x 3.5" x 1.0" (10.1cm x 8.8cm x 2.5cm) Board Number EV7782DF-00A EV7782DF-00A Rev. 1.2 1/11/2006 MPS IC Number MP7782DF 1 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. C7 27pF EV7782DF-00A Rev. 1.2 1/11/2006 VCC + SWB D13 1N5819 1 NC FB2 FB1 AGND NC EN PGND2 15 NC 16 BS1 17 VDD1 18 SW1 19 PGND1 20 2 3 4 D2 1N4148 C1 390pF CN2 RCA D6 6.2V D5 MBRS130LTR VCC SWB D9 6.2V D10 MBRS130LTR D12 1N4148 VCC C16 390pF D14 1N5819 C4 1pF SWA + IN C10 2.2nF 5 EN 7 FB2 FB1 AGND EN NC 11 BS2 12 VDD2 13 SW2 14 8 9 10 6 EVALUATION BOARD SCHEMATIC + C15 1pF EN SWA U1 MP7782DF C11 27pF EV7782DF-00A - 50W CLASS D MONO BRIDGED AUDIO AMPLIFIER EV BOARD www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. CN1 VCC + VCC SW1 EXT_EN C19 NS EXT_EN EN LED1 RED EV7782_S01 POWER CONNECTOR 2 EV7782DF-00A - 50W CLASS D MONO BRIDGED AUDIO AMPLIFIER EV BOARD EV7782DF-00A BILL OF MATERIALS Qty 2 2 1 2 2 2 2 2 1 1 1 1 2 1 1 2 2 2 2 2 1 2 2 2 2 2 3 2 1 1 1 1 Ref C1, C16 C2, C17 C3 C4, C15 C5, C12 C6, C13 C7, C11 C8, C14 C9 C10 C18 C19 C20, C21 CN1 CN2 D2, D12 D5, D10 D6, D9 D13, D14 L1, L2 LED1 R1, R12 R2, R13 R3, R5 R4, R11 R6, R8 R7, R9, R15 R10, R16 R14 SP1 SW1 U1 Value Description Package SM0603 Radial Radial SM0603 SM1206 SMD SM0603 SM0805 Radial SM0603 SM0603 SM1206 Manufacturer Panasonic Panasonic Panasonic Panasonic TDK Panasonic TDK TDK Panasonic TDK TDK Panasonic CUI Inc Diodes Inc IR Diodes Inc Diodes Inc Toko Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic E-Switch MPS Manufacturer P/N ECU-V1H391KBV ECQ-V1H224JL ECA-1VHG102 ECJ-1VC1H010C C3216X7R1E105K ECE-V1EA100SR C1608C0G1H270J C2012X7R1E105K ECQ-V1H474JL C1608X7R1H222K C1608X5R1C105K ECJ-3VB1H104K RCJ-012 1N4148WS-7 MBRS130LTR BZT52C6V2S-7 1N5819HW-7 16RHBP-140M LN28RP ERJ-3EKF1003V ERJ-3EKF4992V ERJ-8GEYJ100V ERJ-3GEYJ203V ERJ-3GEYJ512V ERJ-3GEYJ103V ERJ-3GEYJ100V ERJ-8GEYJ302V EG2209A MP7782DF 390pF Ceramic Capacitor, 50V, X7R 0.22F Film Capacitor, 50V, Film Electrolytic Capacitor 1000F 35V, NHG 1pF Ceramic Capacitor, 50V, NPO 1F Ceramic Capacitor, 25V, X7R 10F Electrolytic Capacitor, 25V 27pF Ceramic Capacitor, 50V, NPO 1F Ceramic Capacitor, 25V, X7R 0.47F Film Capacitor, 50V, Film 2.2nF Ceramic Capacitor, 50V, X7R 1F Ceramic Capacitor, 16V, X5R NS Not Stuffed 0.1F Ceramic Capacitor, 50V, X7R Banana Jacks, Red and Black RCA Jack, RA Diode Switch, 75V, 200mW Schottky Diode, 30V, 1A Zener Diode, 6.2V, 200mW Diode Schottky, 40V, 1A 14H Inductor, 4.9A Red Diff LED, Round 100k Film Resistor, 1% 49.9k Film Resistor, 1% 10 Film Resistor, 5% 20k 5.1k 10k 10 3k Film Resistor, 5% Film Resistor, 1% Film Resistor, 5% Film Resistor, 5% Film Resistor, 5% Speaker Terminal DPDT Slide Switch Class D Amplifier, 50W SOD-323 SMB SOD-323 SOD-123 Radial Radial SM0603 SM0603 SM1206 SM0603 SM0603 SM0603 SM0603 SM1206 TSSOP20 EV7782DF-00A Rev. 1.2 1/11/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 3 EV7782DF-00A - 50W CLASS D MONO 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-00A Rev. 1.2 1/11/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 4 EV7782DF-00A - 50W CLASS D MONO BRIDGED AUDIO AMPLIFIER EV BOARD QUICK START GUIDE This board is set up from the factory for 24V operation. 1. Power Requirements a. Power supply: 24V b. 0V to 1VRMS (max) audio signal source. c. Speaker: 6 minimum. 2. Setup Condition for 24V Operation 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. Set the enable switch to the DISABLE position. 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. Set the enable switch to the ENABLE position. b. Audio should be heard from the speaker(s) 4. Music Turn-Off Sequence a. Set the enable switch to the DISABLE position. 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-00A Rev. 1.2 1/11/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 5 |
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