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TM
EV7722DF-00C
20W Stereo Class D Single Ended Audio Amplifier
EVALUATION BOARD
The Future of Analog IC Technology
TM
DESCRIPTION
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: * 180m 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 4 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.
FEATURES
* * * * * * * * * * * * 20W Output at VDD = 24V into a 4 load THD+N = 0.06% at 1W, 8 93% Efficiency at 20W Low Noise (190V Typical) Switching Frequency Up to 1MHz 9.5V to 24V Operation from a Single Supply Mute/Standby Modes (Sleep) Flat Panel and Projection Televisions DVD and Surround Sound Systems Flat Panel Monitors Multimedia Computers Home Stereo Systems
APPLICATIONS
"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 VDD Value 24 Units V
EV7722DF-00C EVALUATION BOARD
THD+N vs Output Power
24V, f = 1KHz 10
THD+N (%)
1
0.1
(L x W x H) 3.5" x 2.4" x 1.2" 8.9cm x 6.1cm x 3.0cm Board Number EV7722DF-00C
EV7722DF-00C Rev. 1.1 10/19/2005
0.01
0.1
1 10 OUTPUT POWER (W)
MP7722_TPC01
MPS IC Number MP7722DF
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
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TM
EV7722DF-00C Rev. 1.1 10/19/2005
100K 17K 17K 500k 22pF 120k
2200uF/35V
EVALUATION BOARD SCHEMATIC
100k NS 100uF/35V
RCA 10uF/50V 100k 1uF/25V/X7R
10uH/3.5A 10 R6 10k
NS 2.2uF/50V 10k 10k 0.47uF/10V
3.3nF
1,000uF/25V 0.47uF\50V 10
390pF
0.1uF
NS 1uF/25V/X7R 2.2uF/50V 2.7nF 0.47uF/10V 100k C19 390pF 10uF/50V 100k 0.1uF 10 10k 10uH/3.5A 10k 1,000uF/25V 0.47uF\50V 10
RCA
NS
10k NS
EV7722DF-00C - 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
NS 100uF/35V 120k 22pF
EVALUATION BOARD
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TM
EV7722DF-00C - 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD
EV7722DF-00C BILL OF MATERIALS
Qty 2 4 2 2 2 1 2 Ref C1, C26 C2, C13, C24, C25 C3, C23 C4, C21 C5, C22 C6 C7, C16 Value 22pF NS Capacitor, 35V, ELECT FC RADIAL Capacitor, 50V, 10F ELECT NHG Ceramic 1F Capacitor, 25V, X7R Ceramic 3.3nF Capacitor, 50V Capacitor, 25V, 1000F ELECT NHG RADIAL Ceramic 0.47F Capacitor, 16V, X7R Capacitor, 50V, 2.2F ELECT NHG Capacitor, 50V, 0.47F Stack Metal Film 100F 390pF 0.1F Capacitor, 50V Radial Radial 1206 0805 Radial Panasonic: EEU-FC1V101 Panasonic: ECA-1HHG100 Panasonic: ECJ-3YB1E105K Panasonic ECJ-2VB1H332K Panasonic: ECA-1EHG102 Panasonic: ECJ-2YB1C474K Panasonic: ECA-1HHG2R2 Panasonic: ECQ-V1H474JL Panasonic: ECU-V1H391KBN Panasonic: ECJ-3VB1H104K Panasonic ECJ-2VB1H272K Panasonic ECA-1VHG222 Keystone: 901 P10294-ND P5567-ND PCC1893CT-ND PCC332BNCT-ND P5544-ND Description Capacitor, 50V Package Manufacturer P/N Panasonic: 0805 ECJ-2VC1H220J Digikey Part No. PCC220CNCT-ND
2 2 2 2 2 1 1 2 1 4
C8, C17 C9, C14 C10, C18 C11, C19 C12, C20
0805 Radial Radial 0805 1206 0805 Radial RCA Jack
PCC1818CT-ND P5564-ND P4671-ND PCC391BNCT-ND PCC104BCT-ND PCC272BNCT-ND P5556-ND 901K-ND
Capacitor, 50V, X7R Ceramic C15 2.7nF Capacitor, 50V Capacitor, 35V, C27 2200F ELECT NHG RADIAL Phono Jack, CN1, CN2 Female Banana Jack CN3 Connector D1, D4, Diode Schottky, D7, D8 30V, 1A D2, D5 Diode Zener, 6.2V 500mW
SMB
OnSemi: MBRS130T3 Diodes Inc: BZT52C6V2-7
MBRS130T3OSCT-ND
2
SOD-123
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. (c) 2005 MPS. All Rights Reserved.
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TM
EV7722DF-00C - 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD
EV7722DF-00C BILL OF MATERIALS (continued)
Qty 2 2 2 4 2 2 Ref FB1, FB2 L1, L2 R1, R20 R2, R3, R13, R18 R4, R17 R5, R15 R6, R7, R9, R11, R12, R19, R22 R8, R14 R10, R16 R21 R23, R24 SP1 SW1 TP1 U1 10H 120k 100k NS 10 Resistor, 1/8W, 1% Resistor, 1/8W, 1% 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 SM0805 Yageo America: 9C08052A10R0FKHFT Yageo America: 9C08052A1002FKHFT Yageo America: 9C12063A10R0FKHFT Yageo America: 9C06031A2002FKHFT Yageo America 9C08052A3001FKHFT Yageo America: 9C08052A1004FKHFT 311-10.0CCT-ND Value Description Ferrite, 6A, 50 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 311-100KCCT-ND
7
10k
SM0805
311-10.0KCCT-ND
2 2 1 2 1 1 1 1
10 20k 3k 17k
SM1206 SM0603 SM0805 SM0805
311-10.0FCT-ND 311-20.0KHCT-ND 311-3.00KCCT-ND 311-1.00MCCT-ND
E-Switch: EG2209A Keystone: 5000 MPS: TSSOP20 MP7722
EG1908-ND 5000K-ND
EV7722DF-00C Rev. 1.1 10/19/2005
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
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TM
EV7722DF-00C - 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD
TYPICAL PERFORMANCE CHARACTERISTICS
20 10 20 10
THD+N (%)
THD+N (%)
1 f=1KHz 0.1
f=10KHz
1 f=1KHz 0.1 f=100Hz 0.01
f=10KHz
f=100Hz 0.01 0.1 1 POUT (W) 10
MP7722-TPC03
0.1
1 POUT (W)
10
MP7722-TPC03
100
100
10
10
THD+N (%)
1
THD+N (%)
1
0.1
0.1
0.01
20
100 1K FREQUENCY (Hz)
10K
MP7722-TPC04
0.01
20
100 1K FREQUENCY (Hz)
10K
MP7722-TPC05
0 -30 -60 -90 -120 -150
0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 100 1K 10K FREQUENCY (Hz)
MP7722-TPC07
AMPLITUDE (dBV)
20
100 1K FREQUENCY (Hz)
10K
MP7722-TPC06
EV7722DF-00C Rev. 1.1 10/19/2005
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
AMPLITUDE (dBr)
5
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EV7722DF-00C - 20W STEREO CLASS D SINGLE ENDED AUDIO AMPLIFIER EVALUATION BOARD
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
+0 -20
AMPLITUDE (dBr) AMPLITUDE (dB)
+4 +2 0 -2 -4 -6 -8 20 100 1K FREQUENCY (Hz) 10K
MP7722-TPC08
-40 -60 -80 -100
-10
20
100 1K 10K FREQUENCY (Hz)
40K
MP7722-TPC09
100 90 80
EFFICIENCY (%)
Efficiency vs POUT
25 20
POUT (W)
POUT vs VDD
70 60 50 40 30 20 10 0 0 5 10 15 20 25 OUTPUT POWER (W) 30 0 5 10 15 20 25 VDD (V) 30 35 5 15 10
MP7722-TPC10
MP7722-TPC11
EV7722DF-00C Rev. 1.1 10/19/2005
www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved.
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. (c) 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, 600. c. Speaker: 4 to 8. 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. (c) 2005 MPS. All Rights Reserved.
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