Reference Design - IRAUDAMP21

IRAUDAMP21
90W/2Ω x 2 Channel Class D Audio Power Amplifier
Using the IR4321
By
Jun Honda, Alvin Rojas
CAUTION:
International Rectifier suggests the following guidelines for safe operation and
handling of IRAUDAMP21 Demo board;
 Always wear safety glasses whenever operating Demo Board
 Avoid physical contact with exposed metal surfaces when operating Demo
Board
 Turn off Demo Board when placing or removing measurement probes
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IRAUDAMP21 REV 1.0
Page 1 of 22
TABLE OF CONTENTS ........................................................ PAGE
INTRODUCTION............................................................................................................................................... 3 SPECIFICATIONS ............................................................................................................................................ 3 CONNECTOR DESCRIPTION ......................................................................................................................... 5 TEST PROCEDURES....................................................................................................................................... 6 PERFORMANCE AND TEST GRAPHS .......................................................................................................... 7 THERMAL INFORMATION ............................................................................................................................ 10 SCHEMATIC................................................................................................................................................... 13 BILL OF MATERIALS .................................................................................................................................... 15 PCB SPECIFICATIONS ................................................................................................................................. 18 REVISION CHANGES DESCRIPTIONS........................................................................................................ 22 www.irf.com
IRAUDAMP21 REV 1.0
Page 2 of 22
Introduction
The IRAUDAMP21 reference design is a two-channel, 90W/ch (2Ω/±18V; no heatsink)/ 135W/ch
(2Ω/±22V; *with heatsink) half-bridge Class D audio power amplifier. This reference design
demonstrates how to use the IR4321 IC, implement protection circuits, and design an optimum PCB
layout using PowIRaudio integrated Class D IC. This reference design does not require heatsink or
fan cooling for normal operation (one-eighth of continuous rated power).The reference design
provides all the required housekeeping power supplies for ease of use. The two-channel design is
scalable for power and the number of channels.
Applications







AV receivers
Home theater systems
Mini component stereos
Powered speakers
Sub-woofers
Musical Instrument amplifiers
Car audio amplifiers
Features
Output Power:
Multiple Protection Features:
PWM Modulator:
90W x 2 channels (10%THD+N 2Ω load; no heatsink),
135W x 2 channels (10%THD+N 2Ω load; *with heatsink),
Over-current protection (OCP), high side and low side
Over-voltage protection (OVP),
Under-voltage protection (UVP), high side and low side
DC-protection (DCP),
Over-temperature protection (OTP)
Self-oscillating half-bridge topology with optional clock
synchronization
Specifications
General Test Conditions (unless otherwise noted)
±12V~±18V
Supply Voltages
±12V~±22V
Load Impedance
4-2Ω
Self-Oscillating Frequency
400kHz
Gain Setting
26dB
Notes / Conditions
Bipolar power supply; without heatsink
Bipolar power supply; *with heatsink
Resistive load
No input signal, Adjustable
1Vrms input yields rated power
Electrical Data
IR Devices Used
Modulator
Typical
Notes / Conditions
IR4321 PowIRaudio integrated Class D IC
Self-oscillating, second order sigma-delta modulation, analog input
70W
1kHz, 4Ω load, without heatsink
70W
1kHz, 4Ω load, *with heatsink
90W
1kHz, 3Ω load, without heatsink
Output Power CH1-2: (1% THD+N)
90W
1kHz, 3Ω load, *with heatsink
70W
1kHz, 2Ω load, without heatsink
100W
1kHz, 2Ω load, *with heatsink
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IRAUDAMP21 REV 1.0
Page 3 of 22
90W
90W
120W
120W
90W
135W
4-2Ω
±70mA
2.4W
0.016%
250V
88%
Output Power CH1-2: (10% THD+N)
Rated Load Impedance
Idling Supply Current
Total Idle Power Consumption
Distortion
Residual Noise
Channel Efficiency
1kHz, 4Ω load, without heatsink
1kHz, 4Ω load, *with heatsink
1kHz, 3Ω load, without heatsink
1kHz, 3Ω load, *with heatsink
1kHz, 2Ω load, without heatsink
1kHz, 2Ω load, *with heatsink
Resistive load
No input signal
No input signal
THD+N @ 40W, 2Ω
IHF-A weighted, AES-17 filter
Single-channel driven, 90W (With No
heatsink), Class D stage
*Tested with custom heat sink with thermal pad BER161-ND
Connection Setup
12V~18V*, 5A DC supply
12V~18V*, 5A DC supply
* With heatsink Power supply
can go up to +/-22V
250W, Non-inductive Resistors
2 Ohm
2 Ohm
SW1:PWM Shutdown/MUTE
G
J3
CH1
Output
J4
S1
CH2
Output
J7
J9
IR4321
Protection
J6
CH1
Input
J8
J5
Normal
S2
S3
CH2
Input
Volume
R113
Audio Signal Generator
Figure 1 Typical Test Setup
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IRAUDAMP21 REV 1.0
Page 4 of 22
Connector Description
CH1 IN
CH2 IN
POWER
CH1 OUT
CH2 OUT
EXT CLK
DCP OUT
J6
J5
J7
J3
J4
J8
J9
Analog input for CH1
Analog input for CH2
Positive and negative supply (+B / -B)
Output for CH1
Output for CH2
External clock sync
DC protection relay output
Audio Precision-Setup
IRAUDAMP21 and Audio Precision shall be connected according to the Figure below:
A
B
Audio Precision
A
B
Bal inputs
Gen
2 Ohms
4
+
+
-
-
2 Ohms
4
Power Supply
* With heatsink Power supply
can go up to +/-22V
+/-18V*
+/35V
+
-
+
G
-
+
CH1
-
CH2
DB_209_Rev
IR4321_DB2.0
CH1
CH2
Amp5
AMP21
Figure 2
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IRAUDAMP21 REV 1.0
Page 5 of 22
Test Procedures
Test Setup:
1. Connect 2-250 W dummy loads to output connectors (J3 and J4 as shown on
Figure 1) and parallel it with input of Audio Precision analyzer (AP).
2. Connect Audio Signal Generator to J6 and J5 for CH1 and CH2 respectively (Ap).
3. Set up the dual power supply with voltages of ±12V~±18V (up to ±22V with
heatsink); set current limit to 5A.
4. Set switch S1 to middle position (self oscillating).
5. Set volume level knob R130 fully counter-clockwise (minimum volume).
6. Connect the dual power supply to J7. as shown on Figure 1
Power up:
7. Turn ON the dual power supply. The ±B supplies must be applied and removed at
the same time.
8. Red LED (Protection) should turn on almost immediately and turn off after about 3s.
9. Green LED (Normal) then turns on after red LED is extinguished and should stay on.
10. Quiescent current for the positive supply should be 60mA 10mA at +18V.
11. Quiescent current for the negative supply should be 75mA 10mA at –18V.
12. Push S3 switch (Trip and Reset push-button) to restart the sequence of LEDs
indicators, which should be the same as noted above in steps 9-10.
Functionality Audio Tests:
13. Apply 1V RMS at 1kHz sinusoidal signal from the Audio Signal Generator.
14. Turn control volume up (R130 clock-wise) to obtain an output reading of 70Watts.
15. For all subsequent tests as shown on the Audio Precision graphs below (Figure 3Figure7), the measurements are taken across J3 and J4 with an AES-17 Filter.
Observe that a 1 VRMS input generates an output around THD+N=1% power level.
16. Sweep the audio signal voltage from 15 mVRMS to 1 VRMS.
17. Monitor the output signals at J3/J4 with an oscilloscope. The waveform must be a
non distorted sinusoidal signal with input signal below 1Vrms.
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IRAUDAMP21 REV 1.0
Page 6 of 22
Performance and Test Graphs
Power vs THD+N
Test Conditions:
VBus = ± 18V
Input Signal = 1 KHz
Load Impedance = 2 ohms
Set Gain = 1% clipping 70W
10
5
2
1
0.5
0.2
0.1
%
0.05
0.02
0.01
0.005
0.002
0.001
100m
200m
500m
1
2
5
10
20
50
100
W
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
3
Red
Blue
Solid
Solid
3
3
Anlr.THD+N Ratio
Anlr.THD+N Ratio
Left
Left
CH1
CH2
Amp21_22 PWR vs THD.at27
Figure 3
Power vs THD+N (with heatsink)
Test Conditions:
VBus = ± 22V
Input Signal = 1 KHz
Load Impedance = 2 ohms
Set Gain = 1% clipping 100W
10
5
2
1
0.5
0.2
0.1
%
0.05
0.02
0.01
0.005
0.002
0.001
90m
200m
500m
1
2
5
10
20
50
100
200
W
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
3
Red
Blue
Solid
Solid
3
3
Anlr.THD+N Ratio
Anlr.THD+N Ratio
Left
Left
CH1
CH2
Amp21_22 PWR vs THD.at27
Figure 4
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IRAUDAMP21 REV 1.0
Page 7 of 22
Frequency Response
Test Conditions:
VBus = ± 18V
Set Output = 1V
Load Impedance = 2 ohms
+4
+3
+2
+1
-0
-1
d
B
r
-2
A
-4
-3
-5
-6
-7
-8
-9
-10
20
50
100
200
500
1k
2k
5k
10k
20k
50k
100k
200k
Hz
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
2
Red
Blue
Solid
Solid
3
3
Anlr.Level A
Anlr.Level B
Left
Left
CH1
CH2
Amp21_22FR.at27
Figure 5
Noise Floor
Test Conditions:
VBus = ± 18V
Load Impedance = 2 ohms
Set Gain = 1% clipping
No Input Signal
+20
+10
+0
-10
-20
-30
-40
-50
d
B
V
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
10
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
2
Red
Blue
Solid
Solid
3
3
Fft.Ch.1 Ampl
Fft.Ch.2 Ampl
Left
Left
CH1
CH2
Amp19FTT,Flloor noise.at27
Figure 6
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IRAUDAMP21 REV 1.0
Page 8 of 22
Noise Floor with 1Vrms Output
Test Conditions:
VBus = ± 18V
Output = 1Vrms @ 1 KHz
Load Impedance = 2 ohms
Set Gain = 1% clipping
+0
-10
-20
-30
-40
d
B
V
-50
-60
-70
-80
-90
-100
-110
10
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
2
Red
Blue
Solid
Solid
3
3
Fft.Ch.1 Ampl
Fft.Ch.2 Ampl
Left
Left
CH1
CH2
Amp21_22_FFT_1V.at27
Figure 7
Efficiency
Tested with no heat sink
Figure 8
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IRAUDAMP21 REV 1.0
Page 9 of 22
Thermal Information
1) 1/8 Po Thermal information for IRAUDAMP21
Conditions:




Tamb=25°C natural convection cooling
Both Channel Driven 1/8Po continuous 30minus
Temperature measured by INFRARED Camera
Measuring temperature point:
IR4321’s temperature saturated ≤85°C within 30minutes
Figure 9
load impedance
4Ω load
3Ω load
2Ω load
1/8 Power(W)
THD=1% power(W)
THD=10% power(W)
9.28
70
90
*9.28
*70
*90
9.88
75
100
*12.29
*95
*120
8.92
70
90
*12.68
*100
*135
*With heatsink
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IRAUDAMP21 REV 1.0
Page 10 of 22
2) Peak Power duration (no heatsink)
Test conditions:


1kHz sine wave signal input ; Both channels driven
Fsw=400kHz
LoadZ
2Ω
3Ω
4Ω
10%THD
PoW
90
120
90
Duration
Till Thermal Shutdown
Till Thermal Shutdown
No Thermal Shutdown
3) Peak Power duration (With heatsink)
Test conditions:


1kHz sine wave signal input ; Both channels driven
Fsw=400kHz
LoadZ
2Ω
3Ω
4Ω
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10%THD
PoW
135
120
90
Duration
No Thermal Shutdown
No Thermal Shutdown
No Thermal Shutdown
IRAUDAMP21 REV 1.0
Page 11 of 22
4) Heatsink installation
Heatsink Installation:
1, Drill a hole in the center of daughter board.
2, Mount heatsink and thermal pad on the back of daughter board.
3, Extend daughter board’s pins with cables as Figure20.
Thermal pad
Digikey part#
BER161-ND
Custom fit
Heat Sink
21mm
38mm
56mm
BER161-ND
Mount heatsink and
thermal pad on the
back of DB.
Drill a hole
Extend daughter
board’s pins with
cables
Figure 10
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IRAUDAMP21 REV 1.0
Page 12 of 22
Schematic
Class D, Daughter Board IR4321 Module Schematic
SCH_DB_4321Rev3.2
D5
+18V Bus
C7
4.7uF,10V
IN+
2
VSS
8
VAA
12
-18V Bus
-B
D6
VCC
SD
C8
CH2 O
-B
CH1 O
+B
J2
+B
PQFN
2.7k
R2
D2
C4
SD
SD
C2
100R
R6
4
VP
CH2
VS
1
2
3
4
11
R28
1R
CSD
7
10R
C22
0.1uF,100V
TP2
CH2 O J2B
-B
COMP
6
10uF, 16V
C18
0.1uF
-B
IN-
5
C6
-5V
VSS
IN+
C20
0.1uF,100V
R18
4.7R
GND
3
C12
2.2nF,50V
1nF
2.2nF,50V
1N4148
U2
O
SD R8
IN-2
A26568-ND
Audio Gnd 2
VAA
2
VSS
8
C10 4.7uF,10V
5
6
7
8
-B
A26570-ND
CH2 Output to LPF2
VCC
VN
620R
10
R10
15
VSS
GND2
1
GND2
VCC
VCC
Audio Gnd 2
10
11
12
CSH
10R
7
8
9
10K
C16
22uF
D4
12
+5V
VAA
J1B
R32
1N4148
R4
CON EISA31
+18V Bus
4.7uF,10V
CH2
IN-2
13
12
IN2
VP
C13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
GND2
11
SD
CH1 Output to LPF1
VCC
VSS
9
10
VCC
A26570-ND
-35V Bus 10uF
14
VSS
GND2
CH2 O
CH2 O
CH2O
CH2 O
-B
-B
-B
-B
CH1 O
CH1 O
CH1 O
CH1 O
+B
+B
+B
GND
+B
4.7R
7
8
13
14
15
16
R15
GND1
VB
VAA
PWM2
VSS
4.7uF,10V
IN-1
5
6
9
10
11
12
R27
1R
COM
IN1
C9
VS
11
CSD
7
10R
4
-B
COMP
6
10uF, 16V
-5V
VSS
3
GND1
C1
CH1
TP1
CH1 O J2A
IN-
5
9
VSS
PWM1
SD
100R
R5
C5
C21
0.1uF,100V
-B
VN
R1
D1
SD
1
OT
C3
0.1uF,100V
C17
0.1uF
O
4
A26568-ND
J1
C19
R17
4.7R
GND
3
C11
2.2nF,50V
1nF
2.2nF,50V
1N4148
U1
10
2.7k
VAA
VB
CSH
2
R7
4
5
6
VAA
15
620R
COM
1
2
3
VSS
1
R9
IN-1
10K
C15
22uF
D3
PQFN
Audio Gnd 1
VCC
J1A
13
14
+5V
10R
9
R3
VAA
GND1
+B
R31
1N4148
CH1
R16
4.7R
C14
-35V Bus
-18V Bus
10uF
-B
Figure 11
Class D, Mother Board Control Volume and Power Supplies Schematic
C19
R39
+5V
470
2.2uF,16V
C15
R27
R17
+B
CLK
47R
33pF
74AHC1G04
Control Volume
U3
C5
10uF, 50V
R13
CH1 Feedback
IN-1
7
6
C108
10nF, 50V
5
VSS
1
VDD
VR0
CS
VR1
SDATA
CLK
1
2 CS
3 SDATAI
47R
R8
47R
R9
4
SIMUL
R7
2
3
10R
+5V
4
C1
10uF, 50V
3310S06S
5
6
SCLK R10
47R
R11
7
8
MUTE
47R
R3
100R
100K
U_?
ZCEN
AINL
CS
AGNDL
SDATAI AOUTL
VD+
VA-
DGRD
VA+
SCLK
AOUTR
SDATAO AGNDR
MUTE
CS3310
AINR
+5V
16
1
2
3
-5V
9
R14
R4
100R
R2
7
8
9
-5V
C6
10uF, 50V
10
11
12
VCC
SD
R56
0.0
1
2
3
4
47R
+B
R34
47k 1%
1K
L2
10uH
74AHC1G04
CH2 OUT
D6
CH2 O
C24
C28
D8
R48
1uF, 250V
R50
2.2k
10, 1W
C18
150pF, 500V
J4
1
2
OPEN
-B
R18
C26
22k
0.1uF, 400V
U4
R105
10R
Q101
FX941
U_6
MC78M12
+5V Power Supply
VCC Power Supply
Vout
VCC
Heat Sink
HS1
GND
Vin
Z101
R101
R102
+B
U_4
Short
0R, 1W
0R, 1W
C105
10uF, 50V
Z102
Vout
C101
C106
10uF, 50V
-5V Power Supply
+5V
MC78M05
Vin
10uF, 50V
R103
U_5
R104
-B
D101
MA2YD2300
C102
10uF, 50V
0R, 1W
0R, 1W
-5V
MC79M05
IN
Short
GND
MMBT5401
4.7K
33pF
C32
1000uF,25V
-B
+B
R32
470
C16
C34
OPEN
Chassis Gnd
R40
R28
R57
100K
-B
VCC
CH2 Feedback
IN-2
5
6
7
8
CLK
R107
OUT
C103
10uF, 50V
D102
MA2YD2300
C104
10uF, 50V
-B
Figure 12
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+18V
Gnd
-18V
C31
1000uF,25V
J2B
CH2 IN
3.3K
R72
OPEN
2
1
3
C33
OPEN
Trace under J7
J1B
C3
10uF, 50V
10
2.2uF,16V
Z104
15V
J7
+5V
R6
11
+5V
R106
47K
C25
0.1uF, 400V
R58
100K
4.7R 4.7R
12
C20
Short
+B
+B
Audio in
Q102
-B
13
14
15
16
IR432X_ MODULE
-5V
+
CH1
-
OPEN
J2A
C2
10uF, 50V
R5
14
J6
Z103
9
10
11
12
OC
R49
2.2k
10, 1W
J3
1
2
C27
D7
R47
1uF, 250V
J1A
15
13
100K
VCC UVP
C23
C17
150pF, 500V
4
5
6
CH1 OUT
D5
1K
CH1 IN
R71
OPEN
10uH
CH1 O
GND
R108
8
R1 J5
4.7uF, 16V
U_2
R33
47k 1%
R55
0.0
C109
+5V
C107
4.7uF, 16V
L1
R31
3.3K
Audio in
+5V
22k
IRAUDAMP21 REV 1.0
Page 13 of 22
+
CH2
-
Class D, Mother Board Clock and House Keeping Schematic
+B
SD
R143
SW-3WAY_A-B
S3A
10K
R147
47k
+5V
SW
S2
1N4148
R110
100k
C112
1200pF, 50V
100pF, 50V
C111
+5V
47k
D105
R138
R112
820R
4.7k
CStart
OT
R148
10k
VCC
1Y
6A
2A
6Y
2Y
5A
3A
5Y
3Y
4A
GND
4Y
DCP
R145
47K
R144
UVP
10k
Q109
Q110
MMBT5551
R141
47k
MMBT5551
U_3
1A
R146
47K
Q103
SW-3WAY_A-B
-B
5K POT
SW
R136
68k
R116
47R
R114
100R
Z108
8.2V
74HC14
10nF, 50V
Q108
+5V
J8
BNC
A24497
R118
1k
EXT. CLK
NORMAL
MUTE
R125
10K
Q106
R134
10k
R126
100K
MMBT5401
Q105
R137
MMBT5551
R130
47K
47k
R119
1k
Trip and restart
OVP
+B
R135
82k
MMBT5551
R115
47R
10uF, 50V
C114
CLK
CLK
S1
C119
SW-PB
0.1uF, 50V
C115
S
E
I
S3B
100pF, 50V
R113
CH1 O
C113
MMBT5551
Z107
10V
R149
47K
Z105
27V
1N4148
D107
C117
1N4148 100uF, 16V
R120
100R
R111
10K
R140
10k
R139
Z106
18V
OT
SP MUTE
D103
C110
R142
68k
D106
1N4148
MMBT5401
SW_H-L
R109
1K
1nF, 50V
1
2
DC protection
PROTECTION
CH2 O
I
E
S
Q111
DCP
D104
1N4148
MUTE R117
R131
47K
-5V
R128
6.8k
R124
10k
Q104
47R
R122
47k
C116
100uF, 16V
R121
47k
R123
DC_PS
1K
R150
+B
47k
MMBT5401
R151
47k
R129
6.8k
R133
47k
Q112
MMBT5551
R127
6.8k
Q107
1
2
3
Z109
8.2V
-5V
+5V
MMBT5551
R132
47k
6
5
4
J9
2
1
PVT412
P1
-B
. Figure 13
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IRAUDAMP21 REV 1.0
Page 14 of 22
Bill of Materials
IRAUDAMP21 Daughter Board BOM
No
Part Number
Designator
1
445-1601-1-ND
C1, C2
2
445-1309-1-ND
C3, C4, C5, C6
3
587-1442-1-ND
C7, C8, C9, C10
4
478-1215-1-ND
C11, C12
5
399-4939-1-ND
C13, C14
6
445-6797-1-ND
C15, C16
7
311-1140-1-ND
C17, C18
8
478-1529-1-ND
C19, C20, C21, C22
9
1N4148WS-FDICT-ND
D1, D2
10
1N4148W-FDICT-ND
D3, D4, D5, D6
11
A26568-ND
J1A, J1B
12
J2A, J2B
15
A26570-ND
RMCF0603JT100RCTND
RMCF0603JT10R0CTND
RMCF0603FT2K70CTND
16
311-620GRCT-ND
R9, R10
17
311-4.7GRCT-ND
R15, R16, R17, R18
18
311-1.0GRCT-ND
RMCF0603JT10K0CTND
R27, R28
13
14
19
R1, R2
R3, R4, R5, R6
R7, R8
R31, R32
Description
CAP CER 10UF 16V 20% X7R
1206
CAP CER 2200PF 50V 10% X7R
0603
CAP CER 4.7UF 10V 10% X7R
0805
CAP CER 1000PF 50V 10% X7R
0603
CAP CER 10UF 16V 20% X7R
1206
CAP CER 22UF 16V 10% X5R
0805
CAP CER 0.1UF 50V 10% X7R
0805
CAP CER 0.1UF 100V 10% X7R
1206
DIODE SWITCH 75V 200MW
SOD323
DIODE SWITCH 100V 400MW
SOD123
CONN HEADER VERT 6POS .100
30AU
CONN HEADER VERT .100 8POS
30AU
RES 100 OHM 1/10W 5% 0603
SMD
RES 10 OHM 1/10W 5% 0603
SMD
RES 2.7K OHM 1/10W 1% 0603
SMD
RES 620 OHM 1/10W 5% 0603
SMD
RES 4.7 OHM 1/10W 5% 0603
SMD
RES 1.0 OHM 1/10W 5% 0603
SMD
RES 10K OHM 1/10W 5% 0603
SMD
Quantity
20 IR4321
U1, U2
PowIRaudio integrated Class D IC
*Heatsink is an option for IRAUDAMP21 to deliver high power up to 135W/2Ω
Vendor
2
Digikey
4
Digikey
4
Digikey
2
Digikey
2
Digikey
2
Digikey
2
Digikey
4
Digikey
2
Digikey
4
Digikey
2
Digikey
2
Digikey
2
Digikey
4
Digikey
1
Digikey
2
Digikey
4
Digikey
2
Digikey
2
Digikey
2
IR
IRAUDAMP21 Mother Board BOM
NO
Part No
Designator
Description
C1, C5, C6, C101, C102,
C103, C104, C105, C106,
C115
CAP ALUM 10UF 50V 20% RADIAL
10
Digikey
2 565-1103-ND
C2, C3
CAP ALUM 2.2UF 50V 20% RADIAL
2
Digikey
3 478-1281-1-ND
C15, C16
CAP CER 33PF 100V 5% NP0 0805
2
Digikey
4 338-2598-ND
C17, C18
CAP MICA 150PF 500V 5% RADIAL
2
Digikey
5 PCC1931CT-ND
C19, C20
CAP CER 2.2UF 16V 10% X7R 1206
2
Digikey
6 PCC104BCT-ND
C119
CAP CER 0.1UF 50V 10% X7R 1206
1
Digikey
7 399-5960-ND
C23, C24
CAP FILM 1UF 250VDC RADIAL
2
Digikey
8 495-1311-ND
C25, C26
CAP FILM 0.1UF 400VDC RADIAL
2
Digikey
9 565-1086-ND
C31, C32
CAP ALUM 1000UF 35V 20% RADIAL
2
Digikey
C107, C109
CAP CER 4.7UF 16V 10% X5R 0805
2
Digikey
1 565-1106-ND
10 PCC2323CT-ND
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IRAUDAMP21 REV 1.0
#
Vender
Page 15 of 22
11 PCC103BNCT-ND
C108, C114
CAP CER 10000PF 50V 10% X7R
0805
2
Digikey
12 PCC102CGCT-ND
C110
CAP CER 1000PF 50V 5% NP0 0805
1
Digikey
13 PCC101CGCT-ND
C111, C113
CAP CER 100PF 50V 5% NP0 0805
2
Digikey
14 478-1372-1-ND
C112
CAP CER 1200PF 50V 10% X7R 0805
1
Digikey
15 565-1037-ND
2
Digikey
16 1N4148W-FDICT-ND
C116, C117
CAP ALUM 100UF 16V 20% RADIAL
D103, D104, D105, D106, DIODE
SWITCH
100V
400MW
D107
SOD123
5
Digikey
17 MURA120T3GOSCT-ND
D5, D6, D7, D8
DIODE ULTRA FAST 1A 200V SMA
4
Digikey
18 MA2YD2300LCT-ND
D101, D102
DIODE SCHOTTKY 25V 1.0A MINI-2P
2
Digikey
19 294-1086-ND
HS1
1
Digikey
20 A32934-ND
J1A, J1B
HEATSINK HORZ SIX BLACK TO-220
CONN RECEPT 6POS .100 VERT
DUAL
CONN RECEPT 8POS .100 VERT
DUAL
CONN TERM BLOCK 2POS 9.52MM
PCB
2
Digikey
2
Digikey
Digikey
Mouser
or
or
1
Digikey
Digikey
Mouser
1
Digikey
1
7G17A-100M-B
Digikey
Inductors,
Inc
Inductors,
Inc
911-1D17A-100M
Mouser
21 A32935-ND
277-1271-ND
22 1714971
or
J2A, J2B
23 CP-1422-ND
277-1272-ND
24 1714984
or
651J3, J4
J5, J6
25 A32248-ND
J8
26 ED1567
J9
CONN RCA JACK R/A BLUE PCB
CONN TERM BLOCK 3POS 9.52MM
PCB
CONN JACK BNC R/A 50 OHM PCB
TIN
TERMINAL BLOCK 7.50MM VERT
2POS
27 7G17A-100M-R
L1, L2
Class D inductor, 10uH
651J7
28 160-1143-ND
NORMAL
29 PVT412PBF-ND
P1
30 160-1140-ND
PROTECTION
31 FCX491CT-ND
Q101
2
2
2
LED 3MM GREEN TRANSPARENT
IC RELAY PHOTOVO 400V 140MA
6DIP
LED
3MM
HI-EFF
RED
TRANSPARENT
1
Digikey
1
Digikey
1
Digikey
1
Digikey
4
Digikey
7
Digikey
34 P100KACT-ND
TRANSISTOR NPN 60V 1A SOT-89
TRANS PNP 150V 350MW SMD
Q102, Q104, Q106, Q111 SOT23-3
Q103, Q105, Q107, Q108, TRANS NPN 160V 350MW SMD
Q109, Q110, Q112
SOT23-3
R1, R2, R57, R58, R110,
R126
RES 100K OHM 1/8W 5% 0805 SMD
6
Digikey
35 P100ACT-ND
R3, R4, R114
RES 100 OHM 1/8W 5% 0805 SMD
3
Digikey
36 P4.7ECT-ND
2
Digikey
37 P47ACT-ND
R5, R6
RESISTOR 4.7 OHM 1/4W 5% 1206
R7, R8, R10, R11, R27,
R28, R115, R116, R117
RES 47 OHM 1/8W 5% 0805 SMD
9
Digikey
38 P10ACT-ND
R9, R105
RES 10 OHM 1/8W 5% 0805 SMD
2
Digikey
39 P3.3KACT-ND
R13, R14
RES 3.3K OHM 1/8W 5% 0805 SMD
2
Digikey
40 P22KACT-ND
2
Digikey
41 P47KACT-ND
R17, R18
RES 22K OHM 1/8W 5% 0805 SMD
R106, R121, R122, R130,
R131, R132, R133, R137,
R139, R141, R145, R146,
RES 47K OHM 1/8W 5% 0805 SMD
R147, R149, R150, R151
16
Digikey
42 P0.0ACT-ND
R55, R56
2
Digikey
43 P470ACT-ND
R39, R40
RES 470 OHM 1/8W 5% 0805 SMD
2
Digikey
44 P100ECT-ND
R120
RES 100 OHM 1/4W 5% 1206 SMD
1
Digikey
32 MMBT5401-FDICT-ND
33 MMBT5551-FDICT-ND
RES 0.0 OHM 1/8W 0805 SMD
45 PT47KAFCT-ND
R31, R32
RES 47.0K OHM 1W 1% 2512 SMD
2
Digikey
46 P1.0KECT-ND
R33, R34
RES 1.0K OHM 1/4W 5% 1206 SMD
2
Digikey
47 P1.0KACT-ND
R109, R118, R119, R123
RES 1.0K OHM 1/8W 5% 0805 SMD
4
Digikey
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IRAUDAMP21 REV 1.0
Page 16 of 22
48 PT10XCT
R47, R48
RES 10 OHM 1W 5% 2512 SMD
2
Digikey
49 P2.2KECT-ND
R49, R50
RES 2.2K OHM 1/4W 5% 1206 SMD
2
Digikey
50 541-0.0XCT-ND
R101,R102, R103. R104
RES 0.0 OHM 1W Jump 2512 SMD
4
Digikey
51 P4.7KACT-ND
R107, R138
RES 4.7K OHM 1/8W 5% 0805 SMD
2
Digikey
52 CT2265-ND
1
Digikey
53 P10KACT-ND
R108
POT 10K OHM 1/8W CARB VERTICAL
R111, R124, R125, R134,
R140, R143, R144, R148
RES 10K OHM 1/8W 5% 0805 SMD
8
Digikey
54 P820ACT-ND
R112
RES 820 OHM 1/8W 5% 0805 SMD
1
Digikey
55 3362H-502LF-ND
R113
TRIMMER 5K OHM 0.5W TH
1
Digikey
56 P6.8KECT-ND
R127, R128, R129
RES 6.8K OHM 1/4W 5% 1206 SMD
3
Digikey
57 P82KACT-ND
R135
RES 82K OHM 1/8W 5% 0805 SMD
1
Digikey
58 P68KACT-ND
R136, R142
2
Digikey
59 P8010S-ND
S1
RES 68K OHM 1/8W 5% 0805 SMD
SWITCH TACTILE SPST-NO 0.02A
15V
1
Digikey
60 EG1908-ND
S2
SWITCH SLIDE DPDT 12V .1A L=4
1
Digikey
61 EG1944-ND
S3
SWITCH SLIDE DP3T .2A L=6MM
1
Digikey
62 296-1089-1-ND
U3, U4
2
Digikey
63 73C8016 or 72J5420
U_1
IC SNGL INVERTER GATE SOT23-5
IC, DIGITAL VOLUME CONTROL,
SOIC-16
1
Newark
64 3310-IR01
U_2
CS3310 Stand-alone Controller
1
*Tachyonix
65 296-1194-1-ND
U_3
1
Digikey
66 MC78M05CTGOS-ND
U_4
1
Digikey
67 LM79M05CT-ND
U_5
IC HEX SCHMITT-TRIG INV 14-SOIC
IC REG VOLT POS 500MA 5V
TO220AB
IC VOLT REG NEG 5V 500MA TO2203
1
Digikey
68 LM78M12CT-ND
U_6
IC VOLT REG 12V 500MA TO220-3
1
Digikey
69 P0.0ECT-ND
Z101, Z102
RES 0.0 OHM 1/4W JUMP 1206 SMD
2
Digikey
70 P0.0ACT-ND
Z103
RES 0.0 OHM 1/8W JUMP 0805 SMD
1
Digikey
71 BZT52C15-FDICT-ND
Z104
DIODE ZENER 15V 500MW SOD-123
1
Digikey
72 568-6362-1-ND
Z105
DIODE ZENER 27V 500MW SOD-123
1
Digikey
73 BZT52C18-FDICT-ND
Z106
DIODE ZENER 18V 500MW SOD-123
1
Digikey
74 BZT52C10-FDICT-ND
Z107
DIODE ZENER 10V 500MW SOD123
1
Digikey
75 BZT52C8V2-FDICT-ND
Z108, Z109
DIODE ZENER 8.2V 500MW SOD-123
2
Digikey
76 10M7578
1
Newark
77 82K6096
Volume Knob
ROUND KNURLED KNOB, 6MM
Thermally TO-220 mounting
kit with screw
THERMALLOY - 4880G - Mounting Kit
3
Newark
78 8401K-ND
1/2" Standoffs 4-40
5
Digikey
79 H724-ND
4-40 Nut
80 H729-ND
No. 4 Lock Washer
*Tachyonix Corporation, http://www.tachyonix.co.jp
www.irf.com
STDOFF HEX M/F 4-40 .500"L ALUM
NUT HEX 4-40 STAINLESS STEEL
5
Digikey
WASHER LOCK INTERNAL #4 SS
5
Digikey
IRAUDAMP21 REV 1.0
Page 17 of 22
PCB Specifications
1.
2.
3.
4.
5.
6.
Two Layers SMT PCB with through holes
1/16 thickness
2/0 OZ Cu
FR4 material
10 mil lines and spaces
Solder Mask to be Green enamel EMP110 DBG (CARAPACE) or Enthone Endplate
DSR-3241or equivalent.
7. Silk Screen to be white epoxy nonconductive per IPC–RB 276 Standard.
8. All exposed copper must finished with TIN-LEAD Sn 60 or 63 for 100u inches thick.
9. Tolerance of PCB size shall be 0.010 –0.000 inches
10. Tolerance of all Holes is -.000 + 0.003”
11. PCB acceptance criteria as defined for class II PCB’S standards.
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IRAUDAMP21 REV 1.0
Page 18 of 22
Daughter Board
Figure 14
Figure 15
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IRAUDAMP21 REV 1.0
Page 19 of 22
Mother Board
Figure 16
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IRAUDAMP21 REV 1.0
Page 20 of 22
Figure 17
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IRAUDAMP21 REV 1.0
Page 21 of 22
Revision changes descriptions
Revision
Rev 1.0
Changes description
Released
Date
Apr,30 2013
WORLD HEADQUARTERS: 101 N. Sepulveda Blvd., El Segundo, California 90245 Tel: (310) 252-7105
Data and specifications subject to change without notice. 05/08/2013
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IRAUDAMP21 REV 1.0
Page 22 of 22