IRAUDAMP12 - International Rectifier

IRAUDAMP12
130W/4Ω x 2 Channel Class D Audio Power Amplifier
Using the IR4301
By
Jun Honda, Liwei Zheng
CAUTION:
International Rectifier suggests the following guidelines for safe operation and
handling of IRAUDAMP12 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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IRAUDAMP12 REV 1.1
Page 1 of 26
TABLE OF CONTENTS ........................................................ PAGE
INTRODUCTION.................................................................................................................3
SPECIFICATIONS ..............................................................................................................3
CONNECTOR DESCRIPTION............................................................................................5
TEST PROCEDURES.........................................................................................................6
PERFORMANCE AND TEST GRAPHS .............................................................................7
THERMAL INFORMATION ..............................................................................................13
SCHEMATIC.....................................................................................................................18
BILL OF MATERIALS ......................................................................................................20
PCB SPECIFICATIONS....................................................................................................22
REVISION CHANGES DESCRIPTIONS ..........................................................................26
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IRAUDAMP12 REV 1.1
Page 2 of 26
Introduction
The IRAUDAMP12 reference design is a two-channel, 130W/ch (4Ω/±31V; no heatsink)/ 160W/ch
(4Ω/±34V; *with heatsink) half-bridge Class D audio power amplifier. This reference design
demonstrates how to use the IR4301 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:
130W x 2 channels (10%THD+N 4Ω load; no heatsink),
160W x 2 channels (10%THD+N 4Ω 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)
±15V~±31V
Supply Voltages
±15V~±34V
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
IR4301 PowIRaudio integrated Class D IC
Self-oscillating, second order sigma-delta modulation, analog input
100W
1kHz, 4Ω load, without heatsink
130W
1kHz, 4Ω load, *with heatsink
80W
1kHz, 3Ω load, without heatsink
Output Power CH1-2: (1% THD+N)
95W
1kHz, 3Ω load, *with heatsink
55W
1kHz, 2Ω load, without heatsink
70W
1kHz, 2Ω load, *with heatsink
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IRAUDAMP12 REV 1.1
Page 3 of 26
130W
160W
100W
120W
70W
90W
4-2Ω
±80mA
4W
0.02%
250V
96%
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 @ 50W, 4Ω
IHF-A weighted, AES-17 filter
Single-channel driven, 130W/*160W(*
with heatsink), Class D stage
*Tested with heatsink from Digikey, part#:294-1085-ND with thermal pad BER161-ND
Connection Setup
15V~31V*, 5A DC supply
15V~31V*, 5A DC supply
* With heatsink Power supply
can go up to +/-34V
250W, Non-inductive Resistors
4 Ohm
4 Ohm
SW1:PWM Shutdown/MUTE
G
J3
CH1
Output
J4
S1
CH2
Output
J7
J9
IR4301
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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IRAUDAMP12 REV 1.1
Page 4 of 26
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
IRAUDAMP12 and Audio Precision shall be connected according to the Figureure below:
A
B
Audio Precision
A
B
Bal inputs
Gen
4 Ohms
+
+
-
-
4 Ohms
Power Supply
* With heatsink Power supply
can go up to +/-34V
+/-31V*
+/35V
+
-
+
G
-
+
CH1
-
CH2
DB_209_Rev
IR4301_DB2.0
CH1
CH2
Amp5
AMP12
Figure 2
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IRAUDAMP12 REV 1.1
Page 5 of 26
Test Procedures
Test Setup:
1. Connect 4-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 ±15V~±31V (up to ±34V 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 +31V.
11. Quiescent current for the negative supply should be 80mA 10mA at –31V.
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 250Watts.
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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IRAUDAMP12 REV 1.1
Page 6 of 26
Performance and Test Graphs
Power vs THD+N
Test Conditions:
VBus = ± 31V
Input Signal = 1 KHz
Load Impedance = 4 ohms
Set Gain = 1% clipping 100W
THD+N vs Power: Adjust pot level to 100W output with 1V rms level input
10
5
1
0.5
%
0.1
0.05
0.02
0.01
0.002
0.001
100m
200m
500m
1
2
5
10
20
50
100
200
W
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
3
Blue
Magenta
Solid
Solid
2
2
Anlr.THD+N Ratio
Anlr.THD+N Ratio
Left
Left
CH1 - 4 Ohms
CH2 - 4 Ohms
Figure 3
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IRAUDAMP12 REV 1.1
Page 7 of 26
Test Conditions:
VBus = ± 25V
Input Signal = 1 KHz
Load Impedance = 3 ohms
Set Gain = 1% clipping 90W
THD+N vs Power: Adjust pot level to 90W output with 1V rms level input
10
5
1
0.5
%
0.1
0.05
0.02
0.01
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
Blue
Magenta
Solid
Solid
2
2
Anlr.THD+N Ratio
Anlr.THD+N Ratio
Left
Left
CH1 - 3 Ohms
CH1 - 3 Ohms
Figure 4
Test Conditions:
VBus = ± 17V
Input Signal = 1 KHz
Load Impedance = 2 ohms
Set Gain = 1% clipping 55W
THD+N vs Power: Adjust pot level to 55W ouput with 1V rms level input
10
5
1
0.5
%
0.1
0.05
0.02
0.01
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
Cyan
Yellow
Solid
Solid
2
2
Anlr.THD+N Ratio
Anlr.THD+N Ratio
Left
Left
CH1 - 2 Ohms
CH2 - 2 Ohms
Figure 5
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IRAUDAMP12 REV 1.1
Page 8 of 26
Power vs THD+N (with heatsink)
Test Conditions:
VBus = ± 34V
Input Signal = 1 KHz
Load Impedance = 4 ohms
Set Gain = 1% clipping 130W
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
200
W
S weep
Trac e
Color
Line S ty le
Thic k
Data
A x is
Com m ent
1
1
1
3
Red
B lue
S olid
S olid
2
2
S 2.A nlr.THD+ N Ratio
S 2.A nlr.THD+ N Ratio
Left
Left
CH1 4ohm 34V
CH2 4ohm 34V
Figure 6
Test Conditions:
VBus = ± 27V
Input Signal = 1 KHz
Load Impedance = 3 ohms
Set Gain = 1% clipping 95W
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
200
W
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
5
5
1
3
Red
Blue
Solid
Solid
2
2
S2.Anlr.THD+N Ratio
S2.Anlr.THD+N Ratio
Left
Left
CH1 3ohm 27V
CH2 3ohm 27V
Figure 7
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IRAUDAMP12 REV 1.1
Page 9 of 26
Test Conditions:
VBus = ± 19V
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
200
W
Sweep
Trace
Color
Line Style
Thick
Data
A xis
Comment
1
1
1
3
Red
B lue
S olid
S olid
2
2
S 2.A nlr.THD+N Ratio
S 2.A nlr.THD+N Ratio
Left
Left
CH1 2ohm 19V
CH2 2ohm 19V
Figure 8
Frequency Response
Test Conditions:
VBus = ± 31V, 25V, 17V
Set Output = 1V
Load Impedance = 4, 3, 2 ohms
+4
T
T
+2
+0
d
B
r
-2
-4
A
-6
-8
-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
3
4
1
1
1
Cyan
Yellow
Red
Solid
Solid
Solid
2
2
2
Anlr.Level A
Anlr.Level A
Anlr.Level A
Left
Left
Left
Ch2 2ohm +-17V
Ch2 4ohm +-31V
Ch2 3ohm +-25V
Figure 9
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IRAUDAMP12 REV 1.1
Page 10 of 26
Noise Floor
Test Conditions:
VBus = ± 31V
Load Impedance = 4 ohms
Set Gain = 1% clipping
No Input Signal
+20
+0
-20
-40
d
B
V
-60
-80
-100
-120
-140
10
20
50
100
200
500
1k
2k
5k
10k
20k
10k
20k
Hz
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
2
Red
Blue
Solid
Solid
1
1
Fft.Ch.1 Ampl
Fft.Ch.2 Ampl
Left
Left
Ch1
Ch2
Figure 10
Noise Floor with 1Vrms Output
Test Conditions:
VBus = ± 31V
Output = 1Vrms @ 1 KHz
Load Impedance = 4 ohms
Set Gain = 1% clipping
+0
-20
-40
d
B
V
-60
-80
-100
10
20
50
100
200
500
1k
2k
5k
Hz
Sweep
Trace
Color
Line Style
Thick
Data
Axis
Comment
1
1
1
2
Magenta
Red
Solid
Solid
1
1
Fft.Ch.1 Ampl
Fft.Ch.2 Ampl
Left
Left
Ch1 4ohm
Ch2 4ohm
Figure 11
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IRAUDAMP12 REV 1.1
Page 11 of 26
Efficiency
100.0%
90.0%
80.0%
70.0%
Efficiency
60.0%
50.0%
40.0%
Amp12 +/-31V 4ohms
30.0%
20.0%
10.0%
0.0%
0
20
40
60
80
100
120
140
160
Power (W)
Figure 12
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IRAUDAMP12 REV 1.1
Page 12 of 26
Thermal Information
1) 1/8 Po Thermal information for IRAUDAMP12
Conditions:




Tamb=25°C natural convection cooling
Both Channel Driven 1/8Po continuous 30minus
Temperature measured by INFRARED Camera
Measuring temperature point:
IR4301’s temperature saturated ≤85°C within 30minutes
Figure 13
load impedance
4Ω load
3Ω load
2Ω load
1/8 Power(W)
THD=1% power(W)
12.5
100
130
*16.25
*130
*160
10
80
100
*11.875
*95
*120
6.375
55
70
*70
*90
*11.125
*With heatsink (Digikey part#:294-1085-ND)
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THD=10% power(W)
IRAUDAMP12 REV 1.1
Page 13 of 26
2) Peak Power duration (no heatsink)
Test conditions:



Vbus=+/-31V for 4 ohms, 25V for 3 ohms, 17.0V for 2 ohms
1kHz sine wave signal input ; Both channels driven
Fsw=400kHz
Test results:
350
+/-31V 4-ohm BCD No Htsnk
300
D u ra tio n (s e c )
250
200
w/ OTP triggering
150
100
50
170
180
150
160
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0
Output Power (W) / CH
Figure 14
300
+/-25V 3-ohm BCD No Htsnk
D u ra tio n (s e c )
250
200
w/ OTP triggering
150
100
50
140
130
120
Output Power (W) / CH
110
100
90
80
70
60
50
40
30
20
10
0
0
Figure15
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IRAUDAMP12 REV 1.1
Page 14 of 26
+/-17V 2-ohm BCD No Htsnk
110
100
90
80
70
60
50
40
30
10
20
w/ OTP triggering
0
D uration (sec)
340
320
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
Output Power (W) / CH
Figure 16
3) Peak Power duration (with heatsink)
Test conditions:


Vbus=+/-34V for 4 ohms, 27V for 3 ohms, 19V for 2 ohms
1kHz sine wave signal input ; Both channels driven
Test results:
1000
900
800
D u ratio n (sec)
700
w/OTP triggering
600
500
400
300
200
+/-34V 4-ohm BCD 8.5C/W Htsnk
100
220
210
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
0
10
0
Output Power (W) / CH
Figure 17
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IRAUDAMP12 REV 1.1
Page 15 of 26
1000
900
800
D u ration (sec)
700
w/ OTP triggering
600
500
400
300
200
+/-27V 3-ohm BCD 8.5C/W Htsnk
100
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0
Output Power (W) / CH
Figure 18
1000
900
D u ra tio n (s e c )
800
700
w/ OTP triggering
600
500
400
300
200
+/-19V 2-ohm BCD 8.5C/W Htsnk
100
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0
Output Power (W) / CH
Figure 19
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IRAUDAMP12 REV 1.1
Page 16 of 26
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.
Heatsink
Thermal pad
Digikey part#
294-1085-ND
BER161-ND
294-1085-ND
BER161-ND
Mount heatsink and
thermal pad on the
back of DB.
Drill a hole
Extend daughter
board’s pins with
cables
Figure 20
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IRAUDAMP12 REV 1.1
Page 17 of 26
Schematic
Class D, Daughter Board IR4301 Module Schematic
SCH_DB_4301Rev3.2
D5
4.7uF,10V
IN+
VSS
C9
VSS
4.7uF,10V
CH1 Output to LPF1
12
VP
VCC
4.7R
VAA
C13
-31V Bus
-35V Bus 10uF
8
D6
VCC
-B
CH1 O
+B
+31V Bus
+31V Bus
SD
C8
2.7k
IN-2
Audio Gnd 2
C4
R2
D2
IN+
4
100R
R6
C2
6
10uF, 16V
-5V
VSS
C22
0.1uF,100V
12
VP
CH2
TP2
CH2 O J2B
-B
VS
1
2
3
4
11
R28
1R
CSD
7
10R
C18
0.1uF
-B
COMP
SD
SD
C20
0.1uF,100V
R18
4.7R
IN-
5
C6
1N4148
GND
3
C12
2.2nF,50V
1nF
2.2nF,50V
PQFN
U2
O
SD R8
A26568-ND
VAA
2
VSS
8
C10 4.7uF,10V
5
6
7
8
-B
A26570-ND
CH2 Output to LPF2
VCC
VN
620R
33K
C16
22uF
D4
10
R10
15
VSS
GND2
1
GND2
VCC
VCC
Audio Gnd 2
10
11
12
CSH
10R
7
8
9
13
14
+5V
VAA
J1B
R32
1N4148
R4
CON EISA31
+B
4.7uF,10V
CH2
IN-2
VB
12
COM
11
IN2
CH2 O
GND2
10
SD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J2
VSS
9
VCC
-B
9
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
A26570-ND
7
PWM2
13
14
15
16
R15
GND1
6
9
10
11
12
R27
1R
IN-1
5
VAA
7
10R
VS
11
CSD
8
IN1
GND1
-5V
VSS
3
4
COMP
6
10uF, 16V
-B
VN
VSS
PWM1
C1
100R
R5
CH1
TP1
CH1 O J2A
IN-
5
SD
SD
2
C5
C21
0.1uF,100V
-B
10
R1
D1
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
15
2.7k
VAA
VB
CSH
2
R7
4
5
6
VAA
COM
620R
VCC
1
2
3
VSS
33K
C15
22uF
D3
PQFN
1
R9
IN-1
J1A
13
14
+5V
Audio Gnd 1
9
R3
10R
+B
R31
1N4148
VAA
GND1
+31V Bus
+31V Bus
C7
CH1
R16
4.7R
C14
-31V Bus
-35V Bus
10uF
-B
Figure 21
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
22k
C5
10uF, 50V
R13
CH1 Feedback
IN-1
3.3K
R55
0.0
C109
+5V
C107
4.7uF, 16V
R108
8
7
6
C108
10nF, 50V
5
VSS
CS
VR1
SDATA
CLK
1
2 CS
3 SDATAI
47R
R8
47R
R9
4
SIMUL
R7
3
10R
+5V
ZCEN
2
4
10uF, 50V
SCLK R10
5
6
47R
R11
7
47R
AGNDL
SDATAI
AOUTL
VA-
DGRD
VA+
SCLK
AOUTR
SDATAO AGNDR
8
MUTE
AINL
CS
VD+
C1
3310S06S
R3
100R
100K
U_?
1
VDD
VR0
R1 J5
4.7uF, 16V
U_2
MUTE
CS3310
AINR
R33
47k 1%
Audio in
+5V
4
5
6
+5V
1
2
3
C17
150pF, 500V
J2A
9
R14
R4
100R
R2
7
8
9
-5V
C6
10uF, 50V
3.3K
VCC
SD
R56
0.0
1
2
3
4
47R
R32
R34
1K
Chassis Gnd
74AHC1G04
C32
1000uF,50V
-B
22uH
CH2 OUT
D6
CH2 O
C24
C28
D8
R48
0.47uF, 400V
R50
2.2k
10, 1W
C18
150pF, 500V
J4
1
2
OPEN
-B
R18
C26
22k
0.1uF, 400V
U4
R106
47K
R105
10R
U_6
MC78M12
Z104
15V
+5V Power Supply
VCC Power Supply
Vout
VCC
Heat Sink
HS1
GND
Vin
Z101
R101
R102
+B
U_4
4.7V 47R, 1W
ZM4732ADICT
47R, 1W
Vout
C101
C106
10uF, 50V
C105
10uF, 50V
-5V Power Supply
+5V
MC78M05
Vin
10uF, 50V
Z102
R103
U_5
R104
-B
4.7V 47R, 1W
ZM4732ADICT
D101
MA2YD2300
C102
10uF, 50V
47R, 1W
-5V
MC79M05
IN
OUT
D102
MA2YD2300
GND
Q101
FX941
GND
MMBT5401
33pF
C34
OPEN
L2
CLK
+B
C103
10uF, 50V
C104
10uF, 50V
-B
Figure 22
www.irf.com
+35V
Gnd
-35V
+B
47k 1%
470
C16
R57
100K
-B
VCC
CH2 Feedback
IN-2
5
6
7
8
R40
R28
C31
1000uF,50V
J2B
10
11
12
CH2 IN
OPEN
2
1
3
C33
OPEN
Trace under J7
J1B
R72
2.2uF,16V
12V
J7
R58
100K
+5V
R6
C3
10uF, 50V
10
+5V
Q102
C25
0.1uF, 400V
4.7R 4.7R
12
J6
4.7K
+B
IR430X_ MODULE
-5V
11
C20
R107
-B
13
14
15
16
+B
C2
10uF, 50V
R5
14
13
Audio in
Z103
9
10
11
12
-5V
+
CH1
-
OPEN
R49
2.2k
10, 1W
J3
1
2
C27
D7
R47
0.47uF, 400V
OC
CH1 OUT
D5
C23
J1A
15
22uH
CH1 O
1K
CH1 IN
R71
OPEN
16
100K
VCC UVP
L1
R31
IRAUDAMP12 REV 1.1
Page 18 of 26
+
CH2
-
Class D, Mother Board Clock and House Keeping Schematic
+B
SD
R143
10K
SW-3WAY_A-B
S3A
R147
47k
+5V
I
E
S
Q111
SW
S2
1N4148
R110
100k
C112
1200pF, 50V
100pF, 50V
C111
+5V
47k
D105
R138
R111
10K
R112
820R
4.7k
CStart
1N4148
D107
C117
1N4148 100uF, 16V
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
-B
SW
R136
68k
R116
47R
R114
100R
Z108
8.2V
10nF, 50V
74HC14
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
R135
82k
MMBT5551
R115
47R
10uF, 50V
C114
CLK
CLK
OVP
+B
C115
S
E
I
S3B
100pF, 50V
5K POT
S1
SW-PB
C119
0.1uF, 50V
DC protection
PROTECTION
CH2 O
SW-3WAY_A-B
R113
CH1 O
C113
MMBT5551
Z107
11V
R149
47K
Z105
36V
OT
R148
10k
R120
100R
R140
10k
R139
Z106
18V
OT
SP MUTE
D103
1nF, 50V
R142
68k
D106
1N4148
MMBT5401
SW_H-L
R109
1K
C110
1
2
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 23
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IRAUDAMP12 REV 1.1
Page 19 of 26
Bill of Materials
IRAUDAMP12 Daughter Board BOM
No
Part Number
Designator
Description
Quantity
Vendor
1
445-1601-1-ND
C1, C2
CAP CER 10UF 16V 20% X7R 1206
2
Digikey
2
445-1309-1-ND
C3, C4, C5, C6
CAP CER 2200PF 50V 10% X7R 0603
4
Digikey
3
587-1442-1-ND
C7, C8, C9, C10
CAP CER 4.7UF 10V 10% X7R 0805
4
Digikey
4
478-1215-1-ND
C11, C12
CAP CER 1000PF 50V 10% X7R 0603
2
Digikey
5
399-4939-1-ND
C13, C14
CAP CER 10UF 16V 20% X7R 1206
2
Digikey
6
445-6797-1-ND
C15, C16
CAP CER 22UF 16V 10% X5R 0805
2
Digikey
7
311-1140-1-ND
C17, C18
CAP CER 0.1UF 50V 10% X7R 0805
2
Digikey
8
478-1529-1-ND
C19, C20, C21, C22
CAP CER 0.1UF 100V 10% X7R 1206
4
Digikey
9
1N4148WS-FDICT-ND
D1, D2
2
Digikey
10
1N4148W-FDICT-ND
D3, D4, D5, D6
4
Digikey
11
A26568-ND
J1A, J1B
2
Digikey
12
J2A, J2B
2
Digikey
R1, R2
RES 100 OHM 1/10W 5% 0603 SMD
2
Digikey
R3, R4, R5, R6
RES 10 OHM 1/10W 5% 0603 SMD
4
Digikey
15
A26570-ND
RMCF0603JT100RCTND
RMCF0603JT10R0CTND
RMCF0603FT2K70CTND
DIODE SWITCH 75V 200MW SOD323
DIODE SWITCH 100V 400MW
SOD123
CONN HEADER VERT 6POS .100
30AU
CONN HEADER VERT .100 8POS
30AU
R7, R8
RES 2.7K OHM 1/10W 1% 0603 SMD
1
Digikey
16
311-620GRCT-ND
R9, R10
RES 620 OHM 1/10W 5% 0603 SMD
2
Digikey
17
311-4.7GRCT-ND
R15, R16, R17, R18
RES 4.7 OHM 1/10W 5% 0603 SMD
4
Digikey
18
R27, R28
RES 1.0 OHM 1/10W 5% 0603 SMD
2
Digikey
19
311-1.0GRCT-ND
RMCF0603JT33K0CTND
R31, R32
RES 33K OHM 1/10W 5% 0603 SMD
2
Digikey
20
IR4301
U1, U2
PowIRaudio integrated Class D IC
2
IR
294-1085-ND
Heatsink
HEATSINK TRIPLE BLACK TO-220
1
Digikey
*22
BER161-ND
Thermal Pad
THERMAL PAD .020" 4X4" GAPPAD
1/6
Digikey
*24
H724-ND
Nut Hex
NUT HEX 4-40 STAINLESS STEEL
1/100
Digikey
1/100
Digikey
13
14
*21
*25 H705-ND
Screw
SCREW MACHINE PHIL 4-40X1/2 SS
*Heatsink is an option for IRAUDAMP12 to deliver high power up to 160W/4Ω
IRAUDAMP12 Mother Board BOM
NO
Part No
1
565-1106-ND
2
565-1103-ND
3
478-1281-1-ND
4
338-2598-ND
5
6
Designator
C1, C5, C6, C101,
C102, C103, C104,
C105, C106, C115
Description
#
Vender
CAP ALUM 10UF 50V 20% RADIAL
10
Digikey
C2, C3
CAP ALUM 2.2UF 50V 20% RADIAL
2
Digikey
C15, C16
CAP CER 33PF 100V 5% NP0 0805
2
Digikey
C17, C18
CAP MICA 150PF 500V 5% RADIAL
2
Digikey
PCC1931CT-ND
C19, C20
CAP CER 2.2UF 16V 10% X7R 1206
2
Digikey
PCC104BCT-ND
C119
CAP CER 0.1UF 50V 10% X7R 1206
1
Digikey
7
495-1315-ND
C23, C24
CAP FILM 0.47UF 400VDC RADIAL
2
Digikey
8
495-1311-ND
C25, C26
CAP FILM 0.1UF 400VDC RADIAL
2
Digikey
9
565-1114-ND
C31, C32
CAP ALUM 1000UF 50V 20% RADIAL
2
Digikey
10
PCC2323CT-ND
C107, C109
CAP CER 4.7UF 16V 10% X5R 0805
2
Digikey
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
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IRAUDAMP12 REV 1.1
Page 20 of 26
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
CAP ALUM 100UF 16V 20% RADIAL
2
Digikey
16
1N4148W-FDICT-ND
C116, C117
D103, D104, D105,
D106, D107
DIODE SWITCH 100V 400MW 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
HEATSINK HORZ SIX BLACK TO-220
1
Digikey
20
A32934-ND
J1A, J1B
CONN RECEPT 6POS .100 VERT DUAL
2
Digikey
21
A32935-ND
277-1271-ND or 6511714971
J2A, J2B
CONN RECEPT 8POS .100 VERT DUAL
CONN TERM BLOCK 2POS 9.52MM
PCB
2
Digikey
Digikey or
Mouser
22
23
24
CP-1422-ND
277-1272-ND or 6511714984
25
A32248-ND
26
27
J3, J4
J5, J6
2
J7
CONN RCA JACK R/A BLUE PCB
CONN TERM BLOCK 3POS 9.52MM
PCB
2
1
Digikey
Digikey or
Mouser
J8
CONN JACK BNC R/A 50 OHM PCB TIN
1
Digikey
ED1567
J9
TERMINAL BLOCK 7.50MM VERT 2POS
1
Digikey
7G14A-220M-B
L1, L2
Class D inductor, 22uH
2
Inductors, Inc
911-1D14A-220M
28
Mouser
7G17A-220M-B
Inductors, Inc
911-1D17A-220M
Mouser
160-1143-ND
NORMAL
LED 3MM GREEN TRANSPARENT
1
Digikey
29
PVT412PBF-ND
P1
IC RELAY PHOTOVO 400V 140MA 6DIP
1
Digikey
30
160-1140-ND
PROTECTION
LED 3MM HI-EFF RED TRANSPARENT
1
Digikey
31
FCX491CT-ND
Digikey
MMBT5401-FDICT-ND
TRANSISTOR NPN 60V 1A SOT-89
TRANS PNP 150V 350MW SMD SOT233
1
32
4
Digikey
33
MMBT5551-FDICT-ND
TRANS NPN 160V 350MW SMD SOT233
7
Digikey
34
P100KACT-ND
Q101
Q102, Q104, Q106,
Q111
Q103, Q105, Q107,
Q108, Q109, Q110,
Q112
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
RESISTOR 4.7 OHM 1/4W 5% 1206
2
Digikey
37
P47ACT-ND
R5, R6
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
RES 22K OHM 1/8W 5% 0805 SMD
2
Digikey
41
P47KACT-ND
R17, R18
R106, R121, R122,
R130, R131, R132,
R133, R137, R139,
R141, R145, R146,
R147, R149, R150,
R151
RES 47K OHM 1/8W 5% 0805 SMD
16
Digikey
42
P0.0ACT-ND
R55, R56
RES 0.0 OHM 1/8W 0805 SMD
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
45
PT47KAFCT-ND
R31, R32
RES 47.0K OHM 1W 1% 2512 SMD
2
Digikey
46
P1.0KECT-ND
RES 1.0K OHM 1/4W 5% 1206 SMD
2
Digikey
47
P1.0KACT-ND
R33, R34
R109, R118, R119,
R123
RES 1.0K OHM 1/8W 5% 0805 SMD
4
Digikey
48
PT10XCT
R47, R48
RES 10 OHM 1W 5% 2512 SMD
2
Digikey
49
P2.2KECT-ND
RES 2.2K OHM 1/4W 5% 1206 SMD
2
Digikey
50
PT47XCT-ND
R49, R50
R101, R102, R103,
R104
RES 47 OHM 1W 5% 2512 SMD
4
Digikey
www.irf.com
IRAUDAMP12 REV 1.1
Page 21 of 26
51
P4.7KACT-ND
R107, R138
RES 4.7K OHM 1/8W 5% 0805 SMD
2
Digikey
52
CT2265-ND
POT 10K OHM 1/8W CARB VERTICAL
1
Digikey
53
P10KACT-ND
R108
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
RES 68K OHM 1/8W 5% 0805 SMD
2
Digikey
59
P8010S-ND
S1
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, SOIC16
1
Newark
64
3310-IR01
U_2
CS3310 Stand-alone Controller
1
*Tachyonix
65
296-1194-1-ND
U_3
IC HEX SCHMITT-TRIG INV 14-SOIC
1
Digikey
66
MC78M05CTGOS-ND
U_4
IC REG VOLT POS 500MA 5V TO220AB
1
Digikey
67
LM79M05CT-ND
U_5
IC VOLT REG NEG 5V 500MA TO220-3
1
Digikey
68
U_6
IC VOLT REG 12V 500MA TO220-3
1
Digikey
69
LM78M12CT-ND
1SMA5917BT3GOSCTND
Z101, Z102
DIODE ZENER 4.7V 1.5W SMA
2
Digikey
70
BZT52C12-FDICT-ND
Z103
DIODE ZENER 12V 500MW SOD-123
1
Digikey
71
BZT52C15-FDICT-ND
Z104
DIODE ZENER 15V 500MW SOD-123
1
Digikey
72
BZT52C36-FDICT-ND
Z105
DIODE ZENER 36V 500MW SOD-123
1
Digikey
73
BZT52C18-FDICT-ND
Z106
DIODE ZENER 18V 500MW SOD-123
1
Digikey
74
BZT52C11-FDICT-ND
Z107
DIODE ZENER 11V 500MW SOD-123
1
Digikey
75
BZT52C8V2-FDICT-ND
Z108, Z109
DIODE ZENER 8.2V 500MW SOD-123
2
Digikey
76
10M7578
ROUND KNURLED KNOB, 6MM
1
Newark
77
82K6096
Volume Knob
Thermally TO-220
mounting kit with screw
THERMALLOY - 4880G - Mounting Kit
3
Newark
78
8401K-ND
1/2" Standoffs 4-40
STDOFF HEX M/F 4-40 .500"L ALUM
5
Digikey
79
H724-ND
4-40 Nut
NUT HEX 4-40 STAINLESS STEEL
5
Digikey
WASHER LOCK INTERNAL #4 SS
5
Digikey
80 H729-ND
No. 4 Lock Washer
*Tachyonix Corporation, http://www.tachyonix.co.jp
PCB Specifications
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 non conductive 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.
1.
2.
3.
4.
5.
6.
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IRAUDAMP12 REV 1.1
Page 22 of 26
Daughter Board
Figure 24
Figure 25
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IRAUDAMP12 REV 1.1
Page 23 of 26
Mother Board
Figure 26
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IRAUDAMP12 REV 1.1
Page 24 of 26
Figure 27
www.irf.com
IRAUDAMP12 REV 1.1
Page 25 of 26
Revision changes descriptions
Revision
Rev 1.0
Rev 1.1
Changes description
Released
Fig21’s Bus voltage has been corrected to
-31V
Date
Apr,30 2012
Feb,19 2014
WORLD HEADQUARTERS: 101 N. Sepulveda Blvd., El Segundo, California 90245 Tel: (310) 252-7105
Data and specifications subject to change without notice. 05/16/2012
www.irf.com
IRAUDAMP12 REV 1.1
Page 26 of 26