TM EV7722DF-00C 20W Stereo Class D Single Ended Audio Amplifier The Future of Analog IC Technology TM EVALUATION BOARD DESCRIPTION FEATURES The EV7722DF-00C is the evaluation board for the MP7722. The MP7722 is a stereo 20W Class D Audio Amplifier. It is one of MPS’ second generation of fully integrated audio amplifiers which dramatically reduces solution size by integrating the following: • 180mΩ power MOSFETs • Startup / Shutdown pop elimination • Short circuit protection circuits • Mute / Standby • • • • • • • The MP7722 utilizes a single ended output structure capable of delivering 2x20W into 4Ω speakers. MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A/B amplifier at efficiencies greater than 90%. The circuit is based on the MPS’ AAMTM proprietary variable frequency topology that delivers excellent linearity, fast response time and operates on a single power supply. 20W Output at VDD = 24V into a 4Ω load THD+N = 0.06% at 1W, 8Ω 93% Efficiency at 20W Low Noise (190µV Typical) Switching Frequency Up to 1MHz 9.5V to 24V Operation from a Single Supply Mute/Standby Modes (Sleep) APPLICATIONS • • • • • Flat Panel and Projection Televisions DVD and Surround Sound Systems Flat Panel Monitors Multimedia Computers Home Stereo Systems “MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic Power Systems, Inc. AAM (Analog Adaptive Modulation) is a Trademark of Monolithic Power Systems, Inc. ELECTRICAL SPECIFICATIONS Parameter Supply Voltage Symbol Value Units VDD 24 V EV7722DF-00C EVALUATION BOARD THD+N vs Output Power 24V, f = 1KHz THD+N (%) 10 (L x W x H) 3.5” x 2.4” x 1.2” 8.9cm x 6.1cm x 3.0cm Board Number MPS IC Number EV7722DF-00C MP7722DF EV7722DF-00C Rev. 1.1 10/19/2005 1 0.1 0.01 0.1 1 10 OUTPUT POWER (W) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. MP7722_TPC01 1 EV7722DF-00C Rev. 1.1 10/19/2005 RCA RCA NS NS 2200uF/35V 2.2uF/50V 2.2uF/50V 10k 10k 10uF/50V 10k 100k 100k NS NS 10uF/50V 17K 10k 2.7nF 3.3nF 100k 100k 17K 100K NS NS 120k 100uF/35V 0.47uF/10V 1uF/25V/X7R 120k 0.47uF/10V 1uF/25V/X7R 100uF/35V 500k 22pF C19 390pF 10 390pF 10 22pF 10k R6 10k 10uH/3.5A 10uH/3.5A 1,000uF/25V 0.47uF\50V 1,000uF/25V 0.47uF\50V 0.1uF 10 0.1uF 10 TM EV7722DF-00C – 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD EVALUATION BOARD SCHEMATIC www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 2 TM EV7722DF-00C – 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD EV7722DF-00C BILL OF MATERIALS Qty Ref Value Description 2 C1, C26 22pF Capacitor, 50V 4 C2, C13, C24, C25 NS 2 C3, C23 2 C4, C21 2 C5, C22 1 C6 2 C7, C16 2 C8, C17 2 C9, C14 2 C10, C18 2 C11, C19 2 1 1 2 1 4 Capacitor, 35V, ELECT FC RADIAL Capacitor, 50V, 10µF ELECT NHG Ceramic 1µF Capacitor, 25V, X7R Ceramic 3.3nF Capacitor, 50V Capacitor, 25V, 1000µF ELECT NHG RADIAL Ceramic 0.47µF Capacitor, 16V, X7R Capacitor, 50V, 2.2µF ELECT NHG Capacitor, 50V, 0.47µF Stack Metal Film 100µF 390pF Capacitor, 50V Capacitor, 50V, X7R Ceramic C15 2.7nF Capacitor, 50V Capacitor, 35V, C27 2200µF ELECT NHG RADIAL Phono Jack, CN1, CN2 Female Banana Jack CN3 Connector D1, D4, Diode Schottky, D7, D8 30V, 1A C12, C20 0.1µF Package Manufacturer P/N Panasonic: 0805 ECJ-2VC1H220J Digikey Part No. PCC220CNCT-ND Radial Panasonic: EEU-FC1V101 P10294-ND Radial Panasonic: ECA-1HHG100 P5567-ND 1206 Panasonic: ECJ-3YB1E105K PCC1893CT-ND 0805 Panasonic ECJ-2VB1H332K PCC332BNCT-ND Radial Panasonic: ECA-1EHG102 P5544-ND 0805 Panasonic: ECJ-2YB1C474K PCC1818CT-ND Radial Radial 0805 1206 0805 Radial RCA Jack SMB Panasonic: ECA-1HHG2R2 Panasonic: ECQ-V1H474JL Panasonic: ECU-V1H391KBN Panasonic: ECJ-3VB1H104K Panasonic ECJ-2VB1H272K PCC391BNCT-ND Panasonic ECA-1VHG222 P5556-ND Keystone: 901 901K-ND OnSemi: MBRS130T3 MBRS130T3OSCT-ND P5564-ND P4671-ND PCC104BCT-ND PCC272BNCT-ND 2 D2, D5 Diode Zener, 6.2V 500mW SOD-123 Diodes Inc: BZT52C6V2-7 BZT52C6V2-7DICT-ND 2 D3, D6 Diode Switch, 75V, 200MW SOD-323 Diodes Inc: 1N4148WS-7 1N4148WSDICT-ND EV7722DF-00C Rev. 1.1 10/19/2005 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 3 TM EV7722DF-00C – 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD EV7722DF-00C BILL OF MATERIALS (continued) Qty Ref Value 2 FB1, FB2 2 L1, L2 10µH 2 R1, R20 120kΩ Description Ferrite, 6A, 50Ω Inductor, 3.5A, 13RHBP/IND Resistor, 1/8W, 1% Resistor, 1/8W, 1% Package Manufacturer P/N Steward: 1206 HI1206T500R-00 Toko: Radial A7502HY-100M Yageo America: SM0805 9C08052A1203FKHFT Yageo America: SM0805 9C08052A1003FKHFT Digikey Part No. 240-1009-1-ND 311-120KCCT-ND 2 R2, R3, R13, R18 R4, R17 2 R5, R15 10Ω Resistor, 1/8W, 1% SM0805 Yageo America: 9C08052A10R0FKHFT 311-10.0CCT-ND 7 R6, R7, R9, R11, R12, R19, R22 10kΩ Resistor, 1/8W, 1% SM0805 Yageo America: 9C08052A1002FKHFT 311-10.0KCCT-ND 2 R8, R14 10Ω 2 R10, R16 20kΩ 1 R21 3kΩ 2 R23, R24 17kΩ 1 SP1 1 SW1 1 TP1 1 U1 4 EV7722DF-00C Rev. 1.1 10/19/2005 100kΩ 311-100KCCT-ND NS Resistor, 1/4W, 1% Resistor, 1/10W, 1% Resistor, 1/8W, 1% Resistor, 1/8W, 1% Speaker Connector Switch Slide, DPDT, 12V, 0.1A, L=4 Test Point PC Mini, .040"D RED Amplifier SM1206 SM0603 SM0805 SM0805 Yageo America: 9C12063A10R0FKHFT Yageo America: 9C06031A2002FKHFT Yageo America 9C08052A3001FKHFT Yageo America: 9C08052A1004FKHFT E-Switch: EG2209A Keystone: 5000 MPS: TSSOP20 MP7722 311-10.0FCT-ND 311-20.0KHCT-ND 311-3.00KCCT-ND 311-1.00MCCT-ND EG1908-ND 5000K-ND www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 4 TM EV7722DF-00C – 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD TYPICAL PERFORMANCE CHARACTERISTICS 20 10 1 THD+N (%) THD+N (%) 20 10 f=10KHz f=1KHz 0.1 f=10KHz 1 f=1KHz 0.1 f=100Hz f=100Hz 0.01 0.1 1 POUT (W) 0.01 10 0.1 1 POUT (W) MP7722-TPC03 100 100 10 10 THD+N (%) THD+N (%) MP7722-TPC03 1 1 0.1 0.1 0.01 20 100 1K FREQUENCY (Hz) 0.01 10K 20 100 1K FREQUENCY (Hz) 0 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 AMPLITUDE (dBr) -30 -60 -90 -120 -150 10K MP7722-TPC05 MP7722-TPC04 AMPLITUDE (dBV) 10 20 100 1K FREQUENCY (Hz) 10K 100 1K 10K FREQUENCY (Hz) MP7722-TPC06 EV7722DF-00C Rev. 1.1 10/19/2005 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. MP7722-TPC07 5 TM EV7722DF-00C – 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD TYPICAL PERFORMANCE CHARACTERISTICS (continued) +0 +4 +2 AMPLITUDE (dBr) AMPLITUDE (dB) -20 -40 -60 -80 -100 0 -2 -4 -6 -8 20 100 1K FREQUENCY (Hz) -10 10K 20 100 1K 10K FREQUENCY (Hz) MP7722-TPC08 100 40K MP7722-TPC09 Efficiency vs POUT 25 POUT vs VDD 90 20 70 POUT (W) EFFICIENCY (%) 80 60 50 40 15 10 30 20 5 10 0 0 5 10 15 20 25 OUTPUT POWER (W) 30 0 5 10 15 20 25 VDD (V) MP7722-TPC10 EV7722DF-00C Rev. 1.1 10/19/2005 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 30 35 MP7722-TPC11 6 TM EV7722DF-00C – 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Bottom Silk Layer Figure 4—Bottom and Bottom Silk Layer EV7722DF-00C Rev. 1.1 10/19/2005 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 7 TM EV7722DF-00C – 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD QUICK START GUIDE Follow the instructions below for proper setup and operation. The EV board comes from the factory preconfigured for 24V operation. For 12V operation, R24 must first be removed, see Figure 5. Figure 5—12V Operation 1. Power Requirements a. Power supply: 15V to 24V, 3A maximum. b. 0V to 1VRMS (max) audio signal source, ≤600Ω. c. Speaker: 4Ω to 8Ω. 2. Setup Condition for 24V Operation a. Set the Enable switch to the DISABLE position. b. Connect the audio input signal source to the amplifier inputs (IN1, IN2). c. Connect the external speakers to the EVB Outputs. d. Before connecting power supply, adjust the power supply to 24V DC (do not turn on). e. Connect the power supply to the VDD terminals. f. Turn on the power supply to apply power to the board. 3. 12V Operation Modifications a. Remove R24 from the demo board. 4. Music Turn-On Sequence a. Set the enable switch to the ENABLE position. b. Audio should be heard from the speaker(s). 5. Music Turn-Off Sequence a. Set the enable switch to the DISABLE position. b. Turn off power supply. 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. EV7722DF-00C Rev. 1.1 10/19/2005 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. 8