TDA Modular amp

Modular expandable power amplifier with TDA7293 / TDA7294 Conn4 U1 Conn5 R6 R7 C6 C5 C2 R1 C3 C8 C9 C1 R2  Schematics and BOM for modular TDA7293 amplifier 3 - Modular poweramp with TDA7293 and TDA7294 Schematics and Bill of materials for TDA amplifier Schematic and BOM of first (main) module 1 2 3 4 5 6 R11 56k 2 3 10u In 2 GND 3 22k 1 11 In 1 2 GND 1 GND 2 input connector Schematic and BOM of first (main) module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Schematic and BOM of second (bridge) module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Schematic and BOM of third (parallel) module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Schematic and BOM of speaker protection module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Three modes of TDA7293 from the official datasheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Simplified schematic of bridged and paralleled modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Connections between single, bridge and parallel modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Variations between main, bridge, and parallel modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 T1 1 PCB for modular expandable TDA amplifier project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 BC212 14 15 16 17 Examples how to connect modules and build instrument amplifiers . . . . . . . . . . . . . . . . . . . 18 Mono bridge, single and parallel, — stereo bridge and single amp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Stereo bridge + parallel, — mono bridge + doubled parallel amp with speaker protection . . . . . . . . . . . . . . . . . . . . 20 More power with parallel modules up to 800W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 23 25 26 27 28 13 Buff. Drv. 220 R10 Clip Det. Bootstrap Bootst. Loader Title 2 TDA7293 1000u 60V 15x1 pin connector 10k 220 22k 30k 56k 6.8k 680 82k TDA7293 BC212 C4 10u 10u B R7 5 GND 22k C6 6 GND 22u 12 Conn6 Out + 14 B.L. B.S. C7 1 Out - 2 3 22u GND C Revision D 1/22/2012 D:\!Works\..\TDA7293.SchDoc 5 Sheet of Drawn By: 6 Notes 16:20:00 3 input connector C3 4 Number 4 12/12/2011 22u 10u 220n 1N4148 1000u 60V 10u 22u Mute TDA 7293/7294 Stage 1 (main module) Date: File: 3 2 input connector STBY 9 10 A4 Bill of Materials Connector Cap Cap NonPolarized Cap Diode Cap Cap Cap Header 15 pin Connector Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor TDA7293 PNP Transistor Out C8 Size Value 22k GND http://custompcb.blogspot.com/ http://diyguitarpa.blogspot.com/ Footprint 2 pin connector 100mil CAP, 2 and 3 MIL Cap, Tantal, 1mil CAP, WIMA, 2MIL Diode Elco 12 mm, 2 mil pins Elco 6mm, 1 mil pins Elco 6mm, 1 mil pins Female connector FHSHR 15 Panel Connector 3 input Small Resistor 300mil Resistor 300mil Resistor 300mil Resistor 300mil Resistor 300mil Resistor 300mil Resistor 300mil Resistor 300mil TDA7293 TO92 R4 10k C9 D Comment R3 30k 220n 22k TDA7293.SchDoc Slave GND STB-GND 82k R9 R5 1 Mute 6.8k 2 R2 GND 8 R8 Conn7 STBY + IN GND Buff. Drv. C - IN 1000u 60V GND R6 C5 Conn5 Schematics and BOM for modular TDA7293 amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 More power with 3 parallel modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Speaker protection schematic with PWM fan controller V:1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Speaker protection PCB with PWM fan controller V:1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Speaker protection schematic with PWM fan controller V:2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Speaker protection PCB with PWM fan controller V:2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +V Sig GND GND PCB of main module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PCB of bridge module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PCB of parallel module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PCB of speaker protection module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U1 22u +V Power C10 A 1N4148 C2 680 -V GND D1 220n 3 input connector GND 1 R1 -V Power Out - +V 2 -V Sig +V -V Mute STBY Br. I/O 3 15 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 B.L. B.S. C1 7 3 input connector 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 3 input connector English blog and PCB order: http://custompcb.blogspot.com/ Hungarian blog and PCB order: http://diyguitarpa.blogspot.com/ The Youtube Channel • Picasa gallery • Email: gitarfogas@gmail.com B Conn4 15x1 pin connector This project made for very simple and popular homemade amplifier instrument amplification. The gainclone called TDA7293 and 7294 is very good solution for guitar or microphone amplifiers. The poweramp can be connected to bridge, parallel, and bridge+parallel mode. This project contains 3 different PCBs for this integrated MOSFET amplifier, and one PCB for speaker protection. Very easy to build, the output power is from 75W to 300W with one channel, but with this project possible to build stereo application. Popular guitar amplifier makers like Marshall and Carlsbro using TDA729x ICs for combos and guitar heads. Conn1 Conn2 15x1 pin connector A Quantity Pins 1 1 1 2 1 2 2 2 2 3 1 1 4 1 1 1 1 1 1 1 Designator 2 Conn7 C7 2 C5 2 C1, C9 2 D1 2 C2, C8 2 C3, C4 2 C6, C10 15 Conn2, Conn4 3 Conn1, Conn5, Conn6 2 R3 2 R10 2 R4, R5, R6, R7 2 R2 2 R11 2 R8 2 R1 2 R9 15 U1 3 T1 2 30 Conn1: Power supply, ±47V for 7293, ±40V for 7294 Conn5: Left and Right audio level inputs Conn7: Clipping LED connector Conn6: Simple (GND and Out+) and bridge (Out+ and Out-) mode speaker outputs. This is the first and the most important Price Total PriceH Total H module#VALUE! of this 20project. 20 Ft This module can #VALUE! be used#VALUE! alone for 1x75W or 2x75W #VALUE! #VALUE! #VALUE! #VALUE! amplification. The 2commercial amplifi#VALUE! 2 Ft #VALUE! #VALUE! ers says 100W for this circuit what is not #VALUE! #VALUE! true. The#VALUE! output power is 70—75w with 4 #VALUE! #VALUE! 10 20 Ft Ohm speakers, and about 40–50w with #VALUE! 44 132 Ft #VALUE! 2 2 Ft 8 Ohm#VALUE! speakers. The maximum power 2 2 Ft #VALUE! 2 supply is ±50V, but8 Ft ±47V recommend#VALUE! 2 2 Ft ed. The#VALUE!max.2 power of circuit called 2 Ft 2 2 Ft 7294 is#VALUE! ±40V, with the 7293 possible to #VALUE! 2 2 Ft #VALUE! 2 2 Ft use ±50V. If you need more power, don’t #VALUE! #VALUE! increase#VALUE!the power #VALUE! supply, use bridge SUM: #VALUE! #VALUE! or parallel configuration instead. This module useful for both 7294 and 7293. Only one thing must be changed, the C6 and C7 capacitor. For 7294 use ONLY C6 between output and Bootstrap pin, for 7293 use ONLY C7 between pin 6 and pin 12. Use this rule for all other modules. Document last modified and saved: 22 January 2012 5:42 PM  Modular poweramp with TDA7293 and TDA7294 - 4 5 - Schematics and Bill of materials for TDA amplifier Schematic and BOM of second (bridge) module 4 1 11 GND Buff. Drv. Bootstrap Bootst. Loader -V Sig Cap Cap NonPolarized Cap Cap Cap Header 15 pin Header 15 pin Resistor Resistor Resistor TDA7293 22u 12 14 1000u 60V B.L. B.S. 22u C C Out - 56k Title TDA 7293/7294 Stage 2 (bridge module) Size Number Revision 2 1/22/2012 Sheet of D:\!Works\..\TDA7293-BR-MOD.SchDocDrawn By: 3 4 5 6 Notes 12/12/2011 Footprint CAP, 2 and 3 MIL Cap, Tantal, 1mil CAP, WIMA, 2MIL Elco 12 mm, 2 mil pins Elco 6mm, 1 mil pins Female connector FHSHR 15 Male connector PHSR-15 (T-T) Resistor 300mil Resistor 300mil Resistor 300mil TDA7293 D A4 Date: File: 16:12:03 Value 22u 10u 220n 1000u 60V 22u 15x1 pin connector 15x1 pin connector 22k 56k 680 TDA7293 Quantity Pins 1 1 2 2 2 1 1 2 1 1 1 15 2 C7 C5 2 C1, C9 2 C2, C8 2 C3, C6 15 Conn5 15 Conn4 2 R6, R7 2 R2 2 R1 15 U1 2 Designator This is the bridge module Total PriceH Total H of Price this project. This mod#VALUE! #VALUE! ule can#VALUE! be connected#VALUE!to #VALUE! #VALUE! the right#VALUE! side of first (main) #VALUE! #VALUE! #VALUE! circuit. This module dupli#VALUE! 10 10 Ft 10 10 Ft cate the#VALUE! output power with #VALUE! 2 4 Ft 8 ohm #VALUE! speakers. 4 Ohm 2 2 Ft #VALUE! 2 2 Ft speakers cannot be used #VALUE! #VALUE! withSUM: bridge amplifier. #VALUE! #VALUE! D 13 7 U1 2 - IN 3 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A Out +/- GND STBY Mute Slave GND Buff. Drv. GND 10 4 B Clip Det. Bootstrap Bootst. Loader Out 5 6 B.L. 12 C7 22u 14 TDA7293 C8 C 1000u 60V C9 R6 220n 56k GND Title GND http://custompcb.blogspot.com/ http://diyguitarpa.blogspot.com/ 1 2 TDA 7293/7294 Stage 3 (paralel module) Size Number Revision Date: File: 1/22/2012 Sheet of D:\!Works\..\TDA7293-PAR-MOD.SchDoc Drawn By: 3 4 5 Bill of Materials TDA7293-PARMOD.SchDoc Comment 12/12/2011 Footprint CAP, 2 and 3 MIL CAP, WIMA, 2MIL Elco 12 mm, 2 mil pins Female connector FHSHR 15 Male connector PHSR-15 (T-T) Resistor 300mil TDA7293 D A4 This module can be connected to the first (main) module, to the second (bridged) module, and if you need more power, can be connected to the first parallel module on the system to increase the output current. Cap NonPolarized Cap Cap Header 15 pin Header 15 pin Resistor TDA7293 9 B.S. STB-GND 11 B.L. B.S. 1000u 60V + IN 1 Conn2 GND R2 -V 6 220n C2 GND C7 C8 Bill of Materials Comment C6 6 22k 220n http://custompcb.blogspot.com/ http://diyguitarpa.blogspot.com/ TDA7293-BRMOD.SchDoc R7 5 TDA7293 15 8 Out B C9 GND 1 Clip Det. STB-GND GND B.L. B.S. B GND R6 22k 4 + IN -V Power 10u GND - IN 10 B.L. B.S. +V Power 3 9 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 -V Power C5 Slave GND C1 15 2 Mute 5 Conn1 GND +V Power GND 4 +V 1000u 60V STBY 3 A 15x1 pin connector 15x1 pin connector C U1 7 22u -V 13 C3 Conn5 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 C2 +V Sig 15x1 pin connector 680 A 220n 2 +V Sig R1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 6 -V Sig C1 Conn4 GND D 5 8 3 +V A B 2 Schematics and Bill of materials for TDA amplifier Schematic and BOM of third (parallel) module 15x1 pin connector 1 Modular poweramp with TDA7293 and TDA7294 16:20:58 Value 22u 220n 1000u 60V 15x1 pin connector 15x1 pin connector 56k TDA7293 Quantity Pins 1 2 2 1 1 1 1 9 2 C7 2 C1, C9 2 C2, C8 15 Conn2 15 Conn1 2 R6 15 U1 Designator 6 Notes This is the parallel module of this amplifier project. This mode can be connected to the right side of first (main) module to use with 4 ohm speakers, orTotal H Price Total PriceH #VALUE! #VALUE! can be connected to the #VALUE! second#VALUE! (bridge) module #VALUE! #VALUE! to use #VALUE! bridged 10amp with 10 Ft #VALUE! 10 10 Ft 4 ohm too. For parallel #VALUE! 2 2 Ft amplification use only #VALUE! #VALUE! TDA7293 only. SUM: #VALUE! #VALUE! Document last modified and saved: 22 January 2012 5:42 PM  PIN CONNECTION (Top view) Modular poweramp with TDA7293 and TDA7294 - 6 VERY HIGH OPERATING VOLTAGE RANGE 7 - (±50V) DMOS POWER STAGE HIGH OUTPUT POWER (100W @ THD = 10%, RL = 8Ω, VS = ±40V) MUTING/STAND-BY FUNCTIONS NO SWITCH ON/OFF NOISE VERY LOW DISTORTION VERY LOW NOISE SHORT CIRCUIT PROTECTION THERMAL SHUTDOWN CLIP DETECTOR MODULARITY (MORE DEVICES CAN BE EASILY CONNECTED IN PARALLEL TO DRIVE VERY LOW IMPEDANCES) Schematics and Bill of materials for TDA amplifier Schematic and BOM of speaker protection module 1 2 3 4 5 6 4 D1 9.2k GND R8 6.8k C4 1N4148 4.7u D 9 R2 10 1 2 3 4 5 6 7 8 C3 Output Power VCLIP 1 1 3 1 1 1 2 1 1 1 1 1 1 1 1 1 19 2 Unit V 26 40 dB VS = ±45V; RL = 8Ω; THD = 10% 140 VS = ±30V; RL = 4Ω; THD = 10% 110 W 75 dB W TDA7294 Parameter Value Unit Supply Voltage (No Signal) V1 VSTAND-BY GND Voltage Referred to -VS (pin 8) ±60 90 V V2 Input Voltage (inverting) Referred to -VS 90 V Maximum Differential Inputs For 7294: V ±30 V V3 Input Voltage (non inverting) Referred to -VS 90 V Signal GND Voltage Referred to -VS 90 V V5 Clip Detector Voltage Referred to -VS 120 V V2 - V3 - High power performances with limited supply voltage level. C8 1000µF - Considerably high output D97AU805A power even with high -Vs load values (i.e. 16 Ohm). The characteristics shown by figures 27 and 28, measured with loads respectively 8 Ohm and 16 Ohm. 1/13 With Rl= 8 Ohm, Vs = ±25V the maximum output power obtainable is 150 W, while with Rl=16 Ohm, Vs = ±35V the maximum Pout is 170 W. C9 100nF Bootstrap Voltage Referred to -VS V6 ABSOLUTE MAXIMUM RATINGS V9 Symbol V10 V V11S O VI12 Ptot IO Top Ptot Tstg, Tj Top T ,T 2/17stg j Stand-by Voltage Referred to -VS Mute Voltage Referred to -VParameter S Supply Voltage (No Signal) Buffer Voltage Referred to -VS Output Peak Current Bootstrap Loader Voltage Referred to -VS Power Dissipation T = 70°C Output Peak Currentcase Operating Ambient Temperature Range Power Dissipation T case = 70°C Storage and Junction Temperature Operating Ambient Temperature Range 2/13 7 13 + 22µF 2 10 15 9 680 R5 10K IN- 2 IN+ 3 SGND 4 MUTE 10 STBY 9 R4 22K 9 15 + 22K - D STBY 7 Max Unit 1 1.5 °C/W IN- 2 IN+ 3 1 8 15 STBY-GND -Vs -PWVs 680 D93AU015A OUT BOOT LOADER 5 C10 100nF R7 2Ω C5 47µF BOOTSTRAP CLIP DET C8 1000µF +Vs BUFFER DRIVER 7 C6 1000µF +PWVs 13 11 - SGND 4 MUTE 10 14 OUT 12 BOOT LOADER + SLAVE STBY 14 12 -Vs 9 13 S/C PROTECTION C7 100nF 22K 2 1 4 THERMAL SHUTDOWN C3 10µF 22µF 14 Typ 13 6 MUTE +Vs 6 °C +PWVs 11 + 8 TDA7294 BUFFER DRIVER 7 - -Vs 0.22µF 2200µF 10 C6 1000µF C9 100nF 22K 22µF +Vs +Vs R2 680Ω VSTBY 8 1N4148 Description R1 22K VMUTE TDA7294 150 W A °C W °C °C R3 22K C1 470nF 22K V Unit V V V A V Parallel with 7293: C2 22µF 14 V 120 Value 120 ±50 120 10 100 50 10 0 to 70 50 150 0 to 70 Thermal Resistance Junction-case C7 100nF MASTER 6 120 Storage and Junction Temperature THERMAL DATA Figure 7: Modular Application Circuit 12/12/2011 Sheet of D:\!Works\..\Amp-Protection.SchDoc Drawn By: 4 Designator Conn1 C3 2 D1, D2, D3 2 C1 2 C2 2 C4 15 Conn3, Conn4 2 Conn2 3 Conn5 8 Rel1 2 R2 2 R1 2 R7 2 R8 2 R9 8 U1 2 Max. æ 50 6 MUTE THERMAL SHUTDOWN STBY S/C PROTECTION 1 8 15 STBY-GND -Vs -PWVs C9 100nF C8 1000µF 5 BOOTSTRAP D97AU808D -Vs 16:18:00 Quantity Pins Typ. ±12 VS C4 10µF 5 10/15 6 Figure 7: Modular Application Circuit +Vs C6 1000µF R3 22K BUFFER DRIVER +Vs C2 22µF R2 680Ω C1 470nF 10 22k 56k 6.8k 9.2k CLIP DET Min. Supply Voltage Rejection 20K Notes 12/12/2011 STAND-BY GND D97AU806 V4 ST-BY/MUTE Figure 6b: PCB - Solder Side of the fig. 6. Revision INVERTING INPUT -PWVs 4 0.56µF NON INVERTING INPUT 2 -Vs 22K 30K SIGNAL GROUND 3 STBY-GND TDA7293 GND CLIP AND SHORT CIRCUIT DETECTOR 4 15 1 22n BOOTSTRAP 5 8 Vi UPC1237 +VS (SIGNAL) 6 1 3 0.56µF -VS (SIGNAL) 7 Test Conditions Symbol BOOTSTRAP STBY 2200µF MASTER 2 input connector 22n 1N4148 330u 33u 4.7u 15x1 pin connector 2 input connector 3 input connector 5 +Vs C STAND-BY 8 ABSOLUTE MAXIMUM RATINGS (*) Rth j-case 0.22µF 9 Parameter Symbol Number Bill of Materials Connector NonPolarized Cap Diode Cap Cap Cap Header 15 pin Connector Connector Relay 2 Resistor Resistor Resistor Resistor Resistor UPC1237 BOOT LOADER Figure 25: Bridge Application Circuit 1 2 3 4 5 6 7 8 Dual Speker protection module 3 Value S/C PROTECTION THERMAL SHUTDOWN MUTE 3 Date: File: 2 Footprint 2 pin connector 100mil CAP, Ceramic, 1MIL Diode Elco 12 mm, 2 mil pins Elco 6mm, 1 mil pins Elco 6mm, 1 mil pins Male connector PHSR-15 (T-T) Panel Connector 2 input Small Panel Connector 3 input Small Relay RE2L 24V DC Resistor 300mil Resistor 300mil Resistor 300mil Resistor 300mil Resistor 300mil UPC1237 12 C5 22µF C7 100nF Comment OUT Bridge with 7293 and 7294: U1 MUTE Supply Voltage Operating A4 http://custompcb.blogspot.com/ http://diyguitarpa.blogspot.com/ AmpProtection.SchDoc SVR 14 + BRIDGE APPLICATION C3 10µF Another application suggestionC4is10µFthe BRIDGE configuration, where two TDA7294 are used, as note see Application shown by the schematic (*) diagram of figure 25. (**) for SLAVE function In this application, the value of the load must not be lower than 8 Ohm for dissipation and current capability reasons. December1999 A suitable field of application includes HI-FI/TV subwoofers realizations. The main advantages offered by this solution are: 10K Size 1 10 STBY GND Title Ptot 13 11 - 6 MUTE 10 For 7293: Gain GLOOP Figure 6b: PCB - Closed SolderLoop Side of the fig. 6. 22µF GND GND B 1N4148 56k R7 GND 4 BOOTSTRAP LOADER BUFFER DRIVER 1 R4 22K 330u D3 SGND VSTBY C1 R9 BLOCK DIAGRAM VS +PWVs (**) D2 33u 3 R5 10K VMUTE 8 1N4148 BUFFER DRIVER 7 2 IN+ +VS (POWER) 11 TAB connected to -VS Symbol TDA7293 C6 1000µF R1 22K Rel1 GND 2 C1 470nF 2 7 IN- OUT 12 QUICK REFERENCE DATA +Vs +Vs C2 R2 22µF 680Ω -VS (POWER) 14 TAB CONNECTED TO PIN 8 R3 22K 1 6 C2 class TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4Ω and 8Ω loads. The built in muting function with turn on delay simplifies the remote operation avoiding switching on-off noises. Parallel mode is made possible by connecting more device through of pin11. High output power can be delivered to very low impedance loads, so optimizing the thermal dissipation of the system. C7 100nF GND 15 13 Figure 1: Typical Application and Test Circuit 5 3 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A 2 input connector 22k Conn4 15x1 pin connector 2 1 GND GND C 2 input connector R1 In2 Multiwatt15 ORDERING NUMBER: TDA7293V Simple 7293 or 7294: Conn2 1 3 Conn1 GND 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 PIN CONNECTION (Top view) DESCRIPTION The TDA7293 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Top- 3 input connector +24V Conn3 15x1 pin connector B 2 1 A TDA7293 Schematics and Bill of materials for TDA amplifier Three modes of TDA7293 from the official datasheet Conn5 AC 24V Modular poweramp with TDA7293 and TDA7294 MULTIPOWER BCD TECHNOLOGY IN- 2 IN+ 3 7 13/17 +PWVs 13 11 - This is Total very simple and PriceH Total Hoptional module for all configuration #VALUE! 20 20 Ft of this amplifier project. This module possible to use for all #VALUE! #VALUE! 2 mono 6 Ft and all two channels stereo configuraone #VALUE! channel #VALUE! #VALUE! tions.#VALUE! This module#VALUE! (if used) must be connected between #VALUE! #VALUE! left and right channels. Connect the left side connector of #VALUE! 10 20 Ft #VALUE! 20 20 Ft speaker protection to the last module of left channel, connect #VALUE! 44 44 Ft #VALUE!to the first module of the main module right #VALUE! side connector #VALUE! 2 2 Ft of right The #VALUE!channel. 2 2 Ft Conn5 is used for 24V DC power, and #VALUE! 2 2 Ft for 24V AC input of UPC1237. Conn1 is the LED connector #VALUE! 2 2 Ft #VALUE! 2 checking. 2 Ft for protection Conn2 is for the high current relays, #VALUE! #VALUE! connect or disconnect the speakers from speaker outputs. SUM: #VALUE! #VALUE! Price VMUTE R5 10K VSTBY SGND 4 MUTE 10 STBY 9 R4 22K C4 10µF OUT BOOT LOADER 6 MUTE THERMAL SHUTDOWN STBY S/C PROTECTION 1 8 15 STBY-GND -Vs -PWVs C9 100nF C3 10µF 5 C10 100nF CLIP DET Warning C8 1000µF +Vs BUFFER DRIVER +Vs IN- 2 IN+ 3 SGND 4 MUTE 10 7 C6 1000µF +PWVs 13 11 - 14 OUT 12 BOOT LOADER + SLAVE 9 6 MUTE THERMAL SHUTDOWN STBY 1 8 STBY-GND -Vs S/C PROTECTION 5 BOOTSTRAP 15 -PWVs C9 100nF C8 1000µF -Vs R7 2Ω C5 47µF BOOTSTRAP -Vs C7 100nF STBY 14 12 + R1 22K D97AU808C Make sure to use the schematic from the datasheet from 2003. Slave mode is activated by pulling IN+, IN- and SGND to -Vs, the negative supply! In older versions from 1999 of the schematic slave mode is NOT activated properly, which may lead according to reports on the internet to the destruction of the chip. 10/13 Document last modified and saved: 22 January 2012 5:42 PM  Modular poweramp with TDA7293 and TDA7294 - 8 9 - Modular poweramp with TDA7293 and TDA7294 Schematics and Bill of materials for TDA amplifier Simplified schematic of bridged and paralleled modes Bridged+paralleled mode Bridged mode Paralleled mode Document last modified and saved: 22 January 2012 5:42 PM  Modular poweramp with TDA7293 and TDA7294 - 10 11 - Modular poweramp with TDA7293 and TDA7294 Schematics and Bill of materials for TDA amplifier Connections between single, bridge and parallel modes 1 2 3 4 5 1 6 2 3 4 5 6 R11 56k Buff. Drv. 8 TDA7293 Title C8 1000u 60V GND C C Number Date: File: Revision 1/22/2012 D:\!Works\..\TDA7293.SchDoc 4 D D 6 A B C 13 7 +V Power +V Sig Mute Slave GND 22k GND 9 10 4 1 Clip Det. STB-GND Bootstrap Buff. Drv. GND B.L. B.S. B GND Bootst. Loader Out R7 5 C6 6 14 22k 22u 12 TDA7293 B.L. B.S. C7 C8 1000u 60V 22u C C9 220n GND R2 Out - 56k Title TDA 7293/7294 Stage 2 (bridge module) Size Number Revision D A4 Date: File: 1/22/2012 Sheet of D:\!Works\..\TDA7293-BR-MOD.SchDocDrawn By: 1 2 3 4 5 6 1 2 3 4 5 6 1 Conn3 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 +V C1 AC 24V R9 9.2k +24V Conn5 C1 330u GND D3 1N4148 3 GND C4 3 GND 3 4 7 5 1 6 2 8 1 2 3 4 5 6 7 8 U1 1 2 3 4 5 6 7 8 5 1 D1 2 2 input connector GND Revision 1N4148 Conn2 GND 5 UPC1237 2 input connector R1 R2 10 22k Rel1 C D 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 U1 13 -V 2 3 1 11 Out +/- B.L. B.S. - IN GND 1000u 60V GND STBY Mute Slave GND 9 10 4 B + IN B.S. Clip Det. STB-GND Buff. Drv. Bootstrap Bootst. Loader Out 5 6 B.L. 12 C7 22u 14 TDA7293 C8 C 1000u 60V C9 R6 220n 56k GND Title GND http://custompcb.blogspot.com/ http://diyguitarpa.blogspot.com/ 6 6 1 A 220n C2 Conn2 4 Conn1 D2 1N4148 C3 22n GND 56k R7 R8 6.8k 2 B.L. B.S. GND 3 input connector C2 33u GND GND Number 4 12/12/2011 Sheet of D:\!Works\..\Amp-Protection.SchDoc Drawn By: Dual Speker protection module 4.7u GND Title A4 Size 3 Date: File: 2 15x1 pin connector 2 2 1 1 B 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 +V Power In2 GND Conn1 -V Power Conn4 GND http://custompcb.blogspot.com/ http://diyguitarpa.blogspot.com/ 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A 15 D 15x1 pin connector 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 STBY + IN 11 http://custompcb.blogspot.com/ http://diyguitarpa.blogspot.com/ Sheet of Drawn By: 5 GND 1000u 60V GND R6 GND A4 3 15x1 pin connector 1 Input connectors for another modules: • Conn4 on Main module • Conn5 on Bridge module • Conn2 on parallel module 22u TDA 7293/7294 Stage 1 (main module) Size http://custompcb.blogspot.com/ http://diyguitarpa.blogspot.com/ Blue lines: connections between main module and bridge module, one connection required between parallel module and bridged module. Green lines: connection between main module and parallel module, and between bridge module and parallel module. Yellow lines: Connection between all modules and speaker protection. Red lines: Input for all channels, the dotted line is for second channel if the full configuration is stereo. 3 3 10u Conn5 GND D 2 C7 2 220n 220 R10 22k 1 1 Out - C5 - IN 7 BC212 B.L. B.S. C9 R5 Notes Out 2 GND Conn6 Out + 14 B GND +V Sig GND B GND 22u 12 Bootst. Loader GND 22k C6 6 Bootstrap 82k R9 T1 1 R7 5 Clip Det. 6.8k 2 10u 15x1 pin connector 2 input connector Conn7 10u U1 -V Power Buff. Drv. GND C4 GND GND R8 C C3 4 22u -V -V Sig 1 Mute Slave GND STB-GND 11 GND Mute 10 + IN 1 In 1 2 STBY C3 8 GND 3 22k 22k 9 STBY R6 C5 Conn5 GND R4 10k A 220n C2 15 3 10u In 2 R3 30k 680 -V Sig - IN R2 R1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 8 2 1000u 60V C1 Conn4 15x1 pin connector +V Sig GND +V A 1N4148 13 U1 22u +V Power C10 A 15x1 pin connector GND -V GND D1 220n C2 680 -V Power Out - 1 R1 -V Sig +V -V Mute STBY Br. I/O +V 2 15 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 B.L. B.S. 3 input connector 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 3 7 Conn4 C1 3 input connector 3 input connector Conn2 15x1 pin connector B Conn1 15x1 pin connector A 2 Size TDA 7293/7294 Stage 3 (paralel module) Number Revision D A4 Date: File: 3 1/22/2012 Sheet of D:\!Works\..\TDA7293-PAR-MOD.SchDoc Drawn By: Document last modified and saved: 4 5 22 January 2012 5:42 PM 6  Modular poweramp with TDA7293 and TDA7294 - 12 13 - Modular poweramp with TDA7293 and TDA7294 Schematics and Bill of materials for TDA amplifier Variations between main, bridge, and parallel modules One channel (mono) applications: Two channel (stereo) applications: • About 75-80W: 1. Main module only 2. Main module and speaker protection • About 2x75-80W: 1. Main module, speaker protection, main module • About 150-200W on 8 Ohm: 1. Main module and Bridge module 2. Main module, Bridge module and speaker protection • About 2x150-200W on 8 Ohm: 1. Main module and Bridge module, speaker protection, main module, bridge module • About 120W on 4 Ohm: 1. Main module, parallel module 2. Main module, parallel module and speaker protection • About 180W on 4 Ohm: 1. Main module, and 2 parallel module 2. Main module, 2 parallel module, and speaker protection • About 220W on 8 Ohm: 1. Main module, 1 parallel module, bridge module and 1 parallel module 2. Main module, 1 parallel module, bridge module, 1 parallel module and speaker protection • About 300W on 4 Ohm: 1. Main module, 2 parallel module, bridge module and 2 parallel module 2. Main module, 2 parallel module, bridge module, 2 parallel module and speaker protection • About 2x120W on 4 Ohm: 1. Main module, parallel module, speaker protection, main module, parallel module • About 2x180W on 4 Ohm: 1. Main module, and 2 parallel module, speaker protection, main module, 2 parallel module • About 2x220W on 8 Ohm: 1. Main module, 1 parallel module, bridge module and 1 parallel module, speker protection, main module, 1 parallel module, bridge module and 1 parallel module PCB for modular expandable TDA amplifier project • About 2x300W on 4 Ohm: 1. Main module, 2 parallel module, bridge module and 2 parallel module, speaker protection, main module, 2 parallel module, bridge module and 2 parallel module Bridge application: Single application: 1) - 1 TDA729x IC paralleled / bridge 1) - 1 TDA729x IC paralleled 2) - 2 TDA729x IC paralleled / bridge 2) - 2 TDA729x IC paralleled Document last modified and saved: 22 January 2012 5:42 PM  Modular poweramp with TDA7293 and TDA7294 - 14 15 - PCB for TDA729x amplifier project PCB of main module TOP LAYER Conn1 C6 Conn5 This module can be used alone for mono - or with speaker protection - for stereo amplifiers. This is the first module for all possible configurations. Conn4 can be connected to the right side of speaker protection only, Conn2 is the input of bridge, parallel or speaker protection modules. Conn4 BOTTOM LAYER U1 Conn5 R6 R7 C6 C5 R1 C3 C9 C1 C2 C8 Conn6 C3 C4 C9 C8 R1 C10 C2 R8R9 T1 Conn7 1 3 C1 R6 D1 R2 R3 R4 R7 R10R5 R11 TOP LAYER R2 OVERLAY ON TOP LAYER U1 Conn2 Notes C5 PCB for TDA729x amplifier project PCB of bridge module BOTTOM LAYER OVERLAY ON TOP LAYER Modular poweramp with TDA7293 and TDA7294 Notes This is the bridge module of this project. This module can be connected to the right side of first (main) module only. This module duplicate the output power with 8 ohm speakers. 4 Ohm speakers cannot be used with bridge amplifier if parallel modules not used. Document last modified and saved: 22 January 2012 5:42 PM  Modular poweramp with TDA7293 and TDA7294 - 16 17 - PCB for TDA729x amplifier project PCB of parallel module TOP LAYER Modular poweramp with TDA7293 and TDA7294 PCB for TDA729x amplifier project PCB of speaker protection module TOP LAYER BOTTOM LAYER BOTTOM LAYER Notes U1 Conn1 C1 C2 This is the parallel module of this amplifier project. This mode can be connected to the right side of first (main) module to use with 4 ohm speakers, or can be connected to the second (bridge) module to use bridged amp with 4 ohm speakers instead of 8. For parallel amplification use only TDA7293 only. This module can be duplicated on single or bridged configurations after main or bridged module to increase the maximum output current. It’s mean, this module can be connected to the previous parallel module as second parallel output. R7 C3 R8 R9R2 U1 C2 C1 Conn4 D3 C4 D1 Rel1 D2 R1 Conn5 Conn1 Conn2 OVERLAY ON TOP LAYER R6 C9 Conn2 OVERLAY ON TOP LAYER C8 Notes This is very simple, cheap and optional module for all configuration of this amplifier project with UPC1237. This module possible to use for all one channel mono and all two channels stereo configurations. This module (if used) must be connected between the last module of left channel and the first (main) module of right channel. Otherworld, the left side connector (Conn3) of speaker protection must be connected to the last module (main, bridge or parallel) of left channel, and the right side connector (Conn4) must be connected to the (first) main module of right channel. Document last modified and saved: 22 January 2012 5:42 PM