Infineon IRAUDAMP17 User manual

Infineon
Brand
Infineon
Model
IRAUDAMP17
Category
Network analyzers
Type
User manual
www.irf.com Page 1 of 13
IRAUDAMP17 REV 1.1
IRAUDAMP17
100W/4Ω x 2 Channel Class D Audio Power Amplifier
Using the IR4302
By
Jun Honda, Liwei Zheng
CAUTION:
International Rectifier suggests the following guidelines for safe operation and
handling of IRAUDAMP17 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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IRAUDAMP17 REV 1.1
TABLE OF CONTENTS ........................... PAGE
INTRODUCTION..............................................................................3
SPECIFICATIONS ...........................................................................3
CONNECTION SETUP ....................................................................4
TEST PROCEDURES......................................................................5
PERFORMANCE AND TEST GRAPHS ..........................................5
THERMAL INFORMATION..............................................................8
BILL OF MATERIALS ....................................................................10
PCB SPECIFICATIONS.................................................................11
REVISION CHANGES DESCRIPTIONS .......................................13
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IRAUDAMP17 REV 1.1
Introduction
The IRAUDAMP17 reference design is a two-channel, 100W/ch (4 Ω/52V Bus voltage) half-bridge
Class D audio power amplifier with single power supply. This reference design demonstrates how to
use the IR4302 IC with single power supply, implement protection circuits, and design an optimum
PCB layout using PowIRaudio integrated Class D IC. This reference design does not require
additional 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: 100W x 2 channels (10%THD+N 4Ω load; with heatsink),
60W x 2 channels (10%THD+N 4Ω load; no heatsink),
Multiple Protection Features: Over-current protection (OCP), high side and low side
Over-voltage protection (OVP),
Under-voltage protection (UVP), high side and low side
Over-temperature protection (OTP)
PWM Modulator: Self-oscillating half-bridge topology
Specifications
General Test Conditions (unless otherwise noted) Notes / Conditions
40V~52V With heatsink
Supply Voltages 30V~42V *Without heatsink
Load Impedance 2-4Ω Resistive load
Self-Oscillating Frequency 400kHz No input signal, Adjustable
Gain Setting 24.8dB 1Vrms input yields rated power
Electrical Data Typical Notes / Conditions
IR Devices Used IR4302 PowIRaudio integrated Class D IC
Modulator Self-oscillating, second order sigma-delta modulation, analog input
40V~52V Single power supply;
Power Supply Range 30V~42V *Without heatsink
75W 1kHz, 4Ω load, with heatsink
Output Power CH1-2: (1% THD+N) 50W 1kHz, 4Ω load, without heatsink
100W 1kHz, 4Ω load, with heatsink
Output Power CH1-2: (10% THD+N) 60W 1kHz, 4Ω load, without heatsink
Rated Load Impedance 2-4Ω Resistive load
Idling Supply Current 65mA No input signal
Total Idle Power Consumption 3.4W No input signal
Distortion 0.008% THD+N @ 30W, 4Ω
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IRAUDAMP17 REV 1.1
Residual Noise 220V IHF-A weighted, AES-17 filter
Channel Efficiency 96% Single-channel driven,100W Class D
stage
*Need to change components as below to achieve 30V~42V power supply voltage range without heatsink
With Heatsink Without Heatsink
Power Supply Voltage Range 40~52V 30~42V
R7~R10 390Ω 240Ω
Z5 36V 27V
Connection Setup
Fig 1 Typical Test Setup
Connector Description
Audio IN CN1 Analog input for CH1 and CH2
POWER P3 Single supply
CH1 OUT P1 Output for CH1
CH2 OUT P2 Output for CH2
CN1
P1 P2
P3
CH1
Output CH2
Output
Audio
Input
40-52V*, 3A DC supply
4 Ohm 4 Ohm
Audio Signal Generator
IR4302
SW1
250W, Non-inductive Resistors
SW1:PWM Shutdown/MUTE
Power
Indicator
FAULT
Indicator
CLIP
Indicator
* Without heatsink Power supply
voltage range is 30~42V
www.irf.com Page 5 of 13
IRAUDAMP17 REV 1.1
Test Procedures
Test Setup:
1. Connect 4, 250W load to both output connectors, P1 and P2 and audio analyzer (Ap).
2. Connect Audio Signal Generator to CN1 for CH1 and CH2 respectively (Ap).
3. Connect a single power supply to P3 pre-adjusted to 40-52V as shown on Figure above
4. Turn on the power supply.
5. Turn on SW1 (right side).
6. Blue LED (Normal) stays turning on after RED LED extinguished.
7. With an Oscilloscope, monitor switching waveform at VS of CH1 and CH2.
8. Quiescent current for the power supply should be 70mA 10mA at 52V.
Functionality Audio Tests:
9. Sweep the audio signal voltage from 15 mVRMS to 1.5 VRMS.
10. Monitor the output signals at P1/P2 with an oscilloscope. The waveform must be a non
distorted sinusoidal signal with input sinusoidal signal below 1Vrms.
Performance and Test Graphs
Power vs THD+N
Test Conditions:
VBus = 52V(with heatsink)
Input Signal=1 kHz
Load Impedance = 4 ohms
ColorSweep Trace Line Style Thick Data Axis Comment
1 1 Blue Solid 2 Anlr.THD+N Ratio Left CH1 4ohms 52V
1 3 Magenta Solid 2 Anlr.THD+N Ratio Left CH2 4ohms 52V
0.001
10
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20m 20050m 100m 200m 500m 1 2 5 10 20 50 100
W
Fig 2
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IRAUDAMP17 REV 1.1
Test Conditions:
VBus = 42V(without heatsink)
Input Signal=1 kHz
Load Impedance = 4 ohms
ColorSweep Trace Line Style Thick Data Axis Comment
1 1 Blue Solid 2 Anlr.THD+N Ratio Left Ch1 42V 4ohms
1 3 Magenta Solid 2 Anlr.THD+N Ratio Left Ch2 42V 4ohms
0.006
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20m 10050m 100m 200m 500m 1 2 5 10 20 50
W
THD+N vs Power
Fig 3
Frequency Response
Test Conditions:
VBus = 52V
Set Output = 1V
Load Impedance = 4 ohms
ColorSweep Trace Line Style Thick Data Axis Comment
1 1 Blue Solid 2 Anlr.Level A Left Ch1 52V 4ohms
1 2 Magenta Solid 2 Anlr.Level B Left Ch2 52V 4ohms
-10
+4
-8
-6
-4
-2
+0
+2
d
B
r
A
20 200k50 100 200 500 1k 2k 5k 10k 20k 50k 100k
Hz
Fig 4
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IRAUDAMP17 REV 1.1
Noise Floor
Test Conditions:
VBus = 52V
Load Impedance = 4 ohms
No Input Signal
ColorSweep Trace Line Style Thick Data Axis Comment
1 1 Blue Solid 2 Fft.Ch.1 Ampl Left Ch1
1 2 Magenta Solid 2 Fft.Ch.2 Ampl Left Ch2
-140
+20
-120
-100
-80
-60
-40
-20
+0
d
B
V
10 20k20 50 100 200 500 1k 2k 5k 10k
Hz
Noise Floor with 1Vrms Output
Test Conditions:
VBus = 52V
Set Output= 1Vrms @ 1 KHz
Load Impedance = 4 ohms
ColorSweep Trace Line Style Thick Data Axis Comment
1 1 Blue Solid 2 Fft.Ch.1 Ampl Left Ch1
1 2 Magenta Solid 2 Fft.Ch.2 Ampl Left Ch2
-100
+0
-80
-60
-40
-20
d
B
V
10 20k20 50 100 200 500 1k 2k 5k 10k
Hz
Fig5
Fig 6
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IRAUDAMP17 REV 1.1
Efficiency
0.0%
20.0%
40.0%
60.0%
80.0%
100.0%
0 20406080100120
Power (W)
Efficiency
Thermal Information:
1/8 Po Thermal Test
Conditions:
Tamb=25°C natural convection cooling
Both Channel Driven 1/8Po continuous 30mins
Temperature measured by infrared camera
Fig 8 IRAUDAMP17 with heatsink (Vbus=52V)
IR4302’s temperature saturated around 85°C within 30minutes
Fig 9 IRAUDAMP17 without heatsink (Vbus=42V)
IR4302’s temperature saturated around 82°C within 30minutes
Fig 7
*Tested with heatsink
www.irf.com Page 9 of 13
IRAUDAMP17 REV 1.1
Schematic
Fig 10
+B
VAA
R30
4.7R
C25
0.1uF
R41
1R
C15 1nF
C27
0.1uF,100V
SCH_DB_4302 Rev1.2
D1
+B
SD
VCC
VSS
R31
4.7R C26
0.1uF
R42
1R
C17
1nF
C18
10uF,16V
C28
0.1uF,100V
C6
2.2nF,50V
C11
2.2nF,50V
C9
2.2nF,50V
C14 2.2nF,50V
D2
1N4148
R28
4.7R
R32
33K
D4
1N4148
IN-2
3
COMP2
2
CLIP
1
NC 30
VP2 24
VS2 25
GND
5
VS1 20
CSH2 27
CSH1
16
VB1
17
IN+1
8
VN2 22
NC 29
VP1
19
VS2 23
COM
15
VS1
18
VSS
6
IN-1
9
COMP1
10
IN+2
4
CSD
11
FAULT
12
NC
13
VCC
14
VN1 21
VB2 26
COM 28
VAA
7-B 31
OO
IC1
IR4302
C5 10uF,10V
C10 10uF,10V
R27
10K
VAA
DS1
DS2
R26
10K
VAA
D3
1N4148 D5
1N4148
R33
33K
C19
0.1uF,50V
R29
10K
DS3
R35
1k 1W
1
23
MJD44H11T4G
Q1
R34 9.1k
Z3
11V
CP5
22uF
+B
R40 9.1k
L1
22uH
R45 2.2k
R43
10, 1W
C31
0.47uF, 400V
LCH
D6
CT_PGND
1
2
P1
D7
C33
0.1uF, 63V
L2
22uH
R46 2.2k
R44
10, 1W
C32
0.47uF, 400V
RCH
CT_PGND
1
2
P2
C34
0.1uF, 63V
D9
D8
CT_SGND
C12
2.2nF,50V
R19 180R
R24
180R
C7
2.2nF,50V
R22 180R
VSS
R21 180R
C13
2.2nF,50V
R20 180R
R23
180R
C8
2.2nF,50V
R1100k
R3
330 C1
1nF
R4
330 C2
1nF
R11
*3.01k 1%
R12
*3.01k 1%
CT_SGND
CT_SGND
INPUT GND
R2100k
R5
330 C3
1nF
R6
330 C4
1nF
R13
*3.01k 1%
R14
*3.01k 1%
CT_SGND
CT_SGND
C38
2200uF, 63V
R48 10k, 1/2WR4910k, 1/2W
C36
0.1uF,100V
+
-
C37
0.1uF,100V
+B
GND
C39
2200uF, 63V
+B
GND 1
2
P3
R53
10k
Z4
56V
Z5
*36V
R51
47k
R52
10k R55
47k
R56
10k
R57
47k
12
3
54
6
S1
SW SPDT
C35
0.1uF
Q2
MMBT5551
Q3
MMBT5551
+B
SD
OVP
UVP
+B
GND
GND
OFF
ON
CT_SGND CT_PGND
CT_PGND
GND
GND
INPUT GND
R50
10R0
CT_PGND GND
R9
*390R 1W
R8
*390R 1W
R10
*390R 1W
R7
*390R 1W
Z1
5.1V
GND
Z2
5.1V
+B
R47
NM
GND
+B
GND
GND
R25
47K
D10
R15 68k 1%
R16 68k 1%
R17 68k 1%
R18 68k 1%
Class D, AMP17 Schematic
CP1
2.2uF
CP2
2.2uF
CP3
2.2uF
CP4
2.2uF
2
1
3
5
4
CN1
C16
22uF, 16V C20
0.1uF,50V
R47
R50
Single Supply
Not mounted
10 Ohm
Dual Supply
10 Ohm
Not mounted
Power Supply
Voltage Range
With Heatsink
390ohm
36V
Without Heatsink
240 Ohm
27V
40-52V 30-42V
R7,R8,R9,R10
Z5
*
www.irf.com Page 10 of 13
IRAUDAMP17 REV 1.1
Bill of Materials
No Digikey P/N Designator Description Quantity Vender
1 399-1082-1-ND C1, C2, C3, C4, C15, C17 CAP CER 1000PF 50V 10% X7R 0603 6 Digikey
2 587-2668-1-ND C5, C10 CAP CER 10UF 10V 10% X7R 0805 2 Digikey
3 490-1500-1-ND
C6, C7, C8, C9, C11, C12,
C13, C14 CAP CER 2200PF 50V 10% X7R 0603 8 Digikey
4 587-1433-1-ND C16 CAP CER 22UF 16V 20% X5R 1206 1 Digikey
5 490-5519-1-ND C18 CAP CER 10UF 16V 10% X6S 0805 1 Digikey
6 311-1140-1-ND C19, C20 CAP CER 0.1UF 50V 10% X7R 0805 2 Digikey
7 445-1418-1-ND C25, C26 CAP CER 0.1UF 100V 10% X7R 0805 2 Digikey
8 445-1377-1-ND C27, C28, C36, C37 CAP CER 0.1UF 100V 10% X7R 1206 4 Digikey
9 495-1315-ND C31, C32 CAP FILM 0.47UF 400VDC RADIAL 2 Digikey
10 BC2054-ND C33, C34 CAP FILM 0.1UF 63VDC RADIAL 2 Digikey
11 445-1418-1-ND C35 CAP CER 0.1UF 100V 10% X7R 0805 1 Digikey
12 565-1137-ND C38, C39 CAP ALUM 2200UF 63V 20% RADIAL 2 Digikey
13 CP1-3545N-ND CN1
CONN JACK STEREO R/A 5PIN
3.5MM 1 Digikey
14 565-1103-ND CP1, CP2, CP3, CP4 CAP ALUM 2.2UF 50V 20% RADIAL 4 Digikey
15 565-1056-ND CP5 CAP ALUM 22UF 25V 20% RADIAL 1 Digikey
16 1N4148W-FDICT-ND D1, D2, D3, D4, D5, D10
DIODE SWITCH 100V 400MW
SOD123 6 Digikey
17 DFLU1200-7DICT-ND D6, D7, D8, D9 DIODE ULTRA FAST POWERDI 123 4 Digikey
18 160-1181-1-ND DS1 LED RED CLEAR 0603 SMD 1 Digikey
19 160-1183-1-ND DS2 LED GREEN CLEAR 0603 SMD 1 Digikey
20 160-1646-1-ND DS3 LED BLUE CLEAR 0603 SMD 1 Digikey
21 IR4302 IC1 2 CH PowIRaudio integrated Class D IC 1 IR
22 Sagami 7G17A-220M-R L1, L2 Power Inductors Class D Inductor 22uH 2
Inductors,
Inc
23 281-1414-ND P1, P2, P3
CONN TERM BLOCK PCB 5.0MM
2POS 3 Digikey
24 MJD44H11T4GOSCT-ND Q1 TRANS PWR NPN 8A 80V DPAK 1 Digikey
25 MMBT5551FSCT-ND Q2, Q3 TRANSISTOR NPN 160V SOT-23 2 Digikey
26 RMCF0603JT100KCT-ND R1, R2 RES 100K OHM 1/10W 5% 0603 SMD 2 Digikey
27 RMCF0603JT330RCT-ND R3, R4, R5, R6 RES 330 OHM 1/10W 5% 0603 SMD 4 Digikey
28 RMCF2512JT390RCT-ND R7, R8, R9, R10 RES 390 OHM 1W 5% 2512 SMD 4 Digikey
29 RHM3.01KCRCT-ND R11, R12, R13, R14 RES 3.01K OHM 1/8W 1% 0805 SMD 4 Digikey
30 311-68.0KCRCT-ND R15, R16, R17, R18 RES 68.0K OHM 1/8W 1% 0805 SMD 4 Digikey
31 RHM180GCT-ND
R19, R20, R21, R22, R23,
R24 RES 180 OHM 1/10W 5% 0603 SMD 6 Digikey
32 RHM47KGCT-ND R25 RES 47K OHM 1/10W 5% 0603 SMD 1 Digikey
33 RHM10KGCT-ND R26, R27, R29 RES 10K OHM 1/10W 5% 0603 SMD 3 Digikey
34 RMCF0603JT4R70CT-ND R28, R30, R31 RES TF 1/10W 4.7 OHM 5% 0603 3 Digikey
35 RHM33KGCT-ND R32, R33 RES 33K OHM 1/10W 5% 0603 SMD 2 Digikey
36 RHM9.1KARCT-ND R34, R40 RES 9.1K OHM 1/8W 5% 0805 SMD 2 Digikey
37 PT1.0KXCT-ND R35 RES 1.0K OHM 1W 5% 2512 SMD 1 Digikey
38 P1.0ACT-ND R41, R42 RESISTOR 1.0 OHM 1/8W 5% 0805 2 Digikey
39 541-10.0AFCT-ND R43, R44 RES 10.0 OHM 1W 1% 2512 SMD 2 Digikey
40 RMCF0805JT2K20CT-ND R45, R46 RES 2.2K OHM 1/8W 5% 0805 SMD 2 Digikey
41 541-10KVCT-ND R48, R49 RES 10K OHM 1/2W 5% 1210 SMD 2 Digikey
42 311-10ARCT-ND R50 RES 10 OHM 1/8W 5% 0805 SMD 1 Digikey
43 RHM47KARCT-ND R51, R55, R57 RES 47K OHM 1/8W 5% 0805 SMD 3 Digikey
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IRAUDAMP17 REV 1.1
44 RHM10KARCT-ND R52, R53, R56 RES 10K OHM 1/8W 5% 0805 SMD 3 Digikey
45 360-1758-ND S1
SWITCH TOGGLE SPDT .4VA SEAL
PCB 1 Digikey
46 DDZ5V1BDICT-ND Z1, Z2 DIODE ZENER 5.1V 500MW SOD-123 2 Digikey
47 BZT52C11-FDICT-ND Z3 DIODE ZENER 11V 500MW SOD123 1 Digikey
48 MMSZ5263BT1GOSCT-
ND Z4 DIODE ZENER 56V 500MW SOD-123 1 Digikey
49 BZT52C36-FDICT-ND Z5 DIODE ZENER 36V 500MW SOD-123 1 Digikey
50 8401K-ND 1/2" Standoffs 4-40 STDOFF HEX M/F 4-40 .500"L ALUM 4 Digikey
51 H724-ND 4-40 Nut NUT HEX 4-40 STAINLESS STEEL 4 Digikey
52 H729-ND No. 4 Lock Washer WASHER LOCK INTERNAL #4 SS 4 Digikey
53 BER161-ND Thermal Pad THERMAL PAD .020" 4X4" GAPPAD 1/6 Digikey
IRAUDAMP17 Heatsink
Fig11
PCB Specifications
PCB:
1. Two Layers SMT PCB with through holes
2. 1/16 thickness
3. 2/0 OZ Cu
4. FR4 material
5. 10 mil lines and spaces
6. 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.
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IRAUDAMP17 REV 1.1
PCB Layout
Top side:
Bottom side:
Note: Refer to AN1170 for footprint and board mounting details.
Fig 12
Fig 13
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IRAUDAMP17 REV 1.1
Revision changes descriptions
Revision Changes description Date
Rev 1.0 Released May, 16 2012
Rev 1.1 BOM R50=10ohm May, 24 2012
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
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Infineon IRAUDAMP17 User manual

Infineon
Brand
Infineon
Model
IRAUDAMP17
Category
Network analyzers
Type
User manual
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