IRAUDAMP12 130W/4 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 www.irf.com 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 www.irf.com IRAUDAMP12 REV 1.1 Page 2 of 26 Introduction The IRAUDAMP12 reference design is a two-channel, 130W/ch (4/31V; no heatsink)/ 160W/ch (4/34V; *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 4 load; no heatsink), 160W x 2 channels (10%THD+N 4 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 4-2 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, 4 load, without heatsink 130W 1kHz, 4 load, *with heatsink 80W 1kHz, 3 load, without heatsink Output Power CH1-2: (1% THD+N) 95W 1kHz, 3 load, *with heatsink 55W 1kHz, 2 load, without heatsink 70W 1kHz, 2 load, *with heatsink www.irf.com IRAUDAMP12 REV 1.1 Page 3 of 26 130W 160W 100W 120W 70W 90W 4-2 80mA 4W 0.02% 250V 96% Output Power CH1-2: (10% THD+N) Rated Load Impedance Idling Supply Current Total Idle Power Consumption Distortion Residual Noise Channel Efficiency 1kHz, 4 load, without heatsink 1kHz, 4 load, *with heatsink 1kHz, 3 load, without heatsink 1kHz, 3 load, *with heatsink 1kHz, 2 load, without heatsink 1kHz, 2 load, *with heatsink Resistive load No input signal No input signal THD+N @ 50W, 4 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 www.irf.com 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 www.irf.com 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. www.irf.com 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 www.irf.com 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 www.irf.com 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 www.irf.com 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 www.irf.com 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 www.irf.com 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 www.irf.com IRAUDAMP12 REV 1.1 Page 12 of 26 Thermal Information 1) 1/8 Po Thermal information for IRAUDAMP12 Conditions: Tamb=25C natural convection cooling Both Channel Driven 1/8Po continuous 30minus Temperature measured by INFRARED Camera Measuring temperature point: IR4301's temperature saturated 85C within 30minutes Figure 13 load impedance 4 load 3 load 2 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) www.irf.com 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 www.irf.com 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 www.irf.com 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 www.irf.com 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 www.irf.com 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 www.irf.com 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/4 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 www.irf.com 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. www.irf.com IRAUDAMP12 REV 1.1 Page 22 of 26 Daughter Board Figure 24 Figure 25 www.irf.com IRAUDAMP12 REV 1.1 Page 23 of 26 Mother Board Figure 26 www.irf.com 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