EV7747DQ-00A –2X20W STEREO SINGLE ENDED CLASS D AUDIO AMPLIFIER EVALUATION BOARD
EV7747DQ-00A Rev. 1.0
www.MonolithicPower.com
2
1/5/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
EVALUATION BOARD SCHEMATIC
1
2, 3, 4
CN2
NS
R1
1
2
2.2uF
C2
10K
R3
5.6nF
C6
1
2
10uF
C4
10K
R19
0.1uF
C24
1uF
C12
VCC
34.8K
R7
10K
R8
1N4148WS
1
2
D3
VCC1
2.2uF
C14
BZT52C6V2S
1
2
D1
10
R14
390pF
C16
10uH
13RHBP-A7502HY-100M
L1
0.47uF
C18
1
2
1000uF/50V
C20
VCC1
10K
R21
9.53K
R25
0.1uF
C22
OUT1
Left-Speaker
82.5K
R5
22pF
C10
1
2, 3, 4
CN3
NS
R2
1
2
2.2uF
C3
10K
R4
1
2
10uF
C5
10K
R20
0.1uF
C25
1uF
C13
VCC
34.8K
R11
10K
R12
1N4148WS
1
2
D4
VCC2
2.2uF
C15
BZT52C6V2S
1
2
D2
10
R15
390pF
C17
10uH
13RHBP-A7502HY-100M
L2
0.47uF
C19
1
2
1000uF/50V
C21
VCC2
10K
R22
9.53K
R26
0.1uF
C23
OUT2
Right-Speaker
82.5K
R6
22pF
C11
CN1
VCC
1
2
2200uF
C1
VCC
100K
R9
25.5K
R10
25.5K
R18
2
5
3
4
1
6
SW1
200K
R13
EN
EN
EN
EXT.ENABLE
GND
DISABLE/EXT.ENABLE
ENABLE SWITCH
ENABLE
NS
C9
NS
C8
20K
R24
20K
R23
VCC2
VCC1
4.7nF
C7
2.2uF
C27
2.2uF
C26
10
R16
10
R17
FB1
FB2
NIN
2
Timer
3
AGND
4
SW
9
BS
8
VDD
7
PIN
1
EN
5
PGND
10
UVP
6
MP7747
U1
NIN
2
Timer
3
AGND
4
SW
9
BS
8
VDD
7
PIN
1
EN
5
PGND
10
UVP
6
MP7747
U2