TDA Bridge public doc

TDA 7293 or 7294 bridged poweramp project  Bridged poweramp project with TDA 7294 - 2 Schematics, images, PCB, and another images about TDA729x bridge project This project made for instrument amplifier project not for home HI-FI users. The amplifiers on this documents are assembled and working very well. The TDA Bridge poweramp have more than enough output power for keyboards or guitars. Marshall and for example Carsbro using this solution on their amplifiers (Marshall mode Four, and Carlsbro GLX100). The PCB of Bridged TDA is very easy to assemble, and very stable for long therm and heavy usage. BRIDGE APPLICATION Another application suggestion is the BRIDGE 3 - configuration, where two TDA7294 are used, as shown by the schematic diagram of figure 25. In this application, the value of the load must not be lower than 8 Ohm for dissipation and current capability reasons. A suitable field of application includes HI-FI/TV subwoofers realizations. The main advantages offered by this solution are: Schematics for TDA 729x bridge amp project Schematic of the bridged TDA poweramp Figure 25: Bridge Application Circuit +Vs 0.22µF 2200µF 7 3 Vi 0.56µF 6 14 22µF 4 10 22K 2 1 The Bridge-Parallel is not recommended. Very hard to build and assemble, the PCB is large, great heatshink and high-power transformer required. TDA7294 9 15 680 8 20K 22K 22µF 10K 30K 0.56µF -Vs 0.22µF 2200µF 1N4148 10 22µF 9 15 8 TDA7294 3 Images (on Google Piacasa) about this project: 7294 bridged • 7293 bridged and paralleled • The soft start • The power supply 13 + 22K ST-BY/MUTE 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 - High power performances with limited supply voltage level. Bridged poweramp project with TDA 7294 - Considerably high output power even with high load values (i.e. 16 Ohm). The characteristics shown by figures 27 and 28, measured with loads respectively 8 Ohm and 16 Ohm. 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. + 22K 6 14 2 1 4 7 13 22µF 22K 680 D93AU015A Schematics, images, PCB, and another images about TDA729x bridge project . . . . . . . . . . . 2 Schematic of the bridged TDA poweramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Images about TDA7294 bridged poweramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Schematic of speaker protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Schematic of power supply and the soft-strart for toroid transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 The assembled poweramp and speaker protection PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Images about the power supply and soft-start for poweramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1 - Bridged 2 - Bridged + paralel 13/17 More power: the paralel TDA project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Schematic of the bridged-paralleled TDA7293 poweramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Images about TDA7293 bridged-paralleled poweramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 The assembled poweramp and speaker protection PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Document last modified and saved: 13 October 2011 11:57 AM  1 12 6 9 Bridged powerampSTBY project with TDA 10uF 7294 Clip Detect STBY GND 5 1N4148 U6 TDA7293 Boot loader Bootstrap Boot loader Amp. Left C45 100n S2 C21 1000uF C47 100n Mute C48 100n MUTE SW SGND C67 10 C23 1000uF -Vs In- C66 10uF 4 3 2 -Vs 8 +Vs In+ 7 Buffer DRV 11 +Vs (Power) -Vs (Power) Amp. Right C22 C46 100n Out 15 22K R11 14 R25 10K 13 14 -Vs (Power) +Vs (Power) Out 15 13 Buffer DRV In- 8 2 In+ 5 D6 Schematics for TDA 729x bridge amp project Schematic of speaker protection 11 3 SGND STBY GND 4 +Vs Images about TDA 729x bridge amp project Images about TDA7294 bridged poweramp Mute -Vs 10 R23 30K Bootstrap 6 12 1 U5 TDA7293 9 5 - Detect STBY Clip 7 Bridged poweramp project with TDA 7294 - 4 C +Vs C24 1000uF F1 1000uF 4A 28V +24V R31 4.7K B LED R29 2.2K R32 1.2K LED K2 K1 S1 AC Input ~15V D3 D4 LS1 SW 9.2K R30 D8 1N4148 R38 56K R39 56K R40 56K 400W 4Ohm R43 10 R41 56K C74 4.7uF 1N4148 D9 C75 33uF LS2 RELAY RELAY D10 1N4148 400W 4Ohm UPC1237 U11 1 2 3 4 5 6 7 8 A C72 C73 22n 330uF R42 56K 1 10uF C70 2 6 2X400W gainclone TDA7293 6.8K R44 3 4 Document last modified and saved: 13 October 2011 11:57 AM 5  Bridged poweramp project with TDA 7294 - 6 7 - Schematics for TDA 729x bridge amp project Schematic of power supply and the soft-strart for toroid transformer 7 Integrated circuit Integrated circuit U U Trimmer potentiometer d Diode TR Power D e Resistor h R m Q R Dual transistor or JFET + C b J f I/O Q c c R C Cb U + C C + + C a a R C Jumper Electrolic capacitor C + J + C+ Input m k + + C R + + C R + + I/O I/O U D R + I/O I/O D + + I/O S R + C Relay R Relay + S 8 Good quailty non-electrolic polarized capacitor, for like Tantal 7 Input 6 k -60V Preamp 5 R 2 C -Vout + C LM337 h Vin C 4 + C 3 Power Supply for Poweramp and preamps C118 100uF 63V + 3 10 1W 2 R24 220 c R19 ~ 50V 1 U10 R C114 D 100uF 100V + C110 R f R e R R g 2200uF 100V + a 2200uF 100V C109 KBPC1010 A b C103 47n J C116 47uF 63V 2 + C99 47n D26 GND ~ 15V 4 D25 30V 2W 47n C102 C KBL04 C101 47n 1 3 A + + 2 C98 47n ADJ D21 C97 47n D24 30V 2W 1 4 C100 47n 3 47n 1 C96 + C D23 30V 2W ~220V + ~ 50V ~ 15V R g C115 47uF 63V D22 30V 2W KBL04 R R C112 4700uF c 2 C D20 C C95 47n 3 4 C117 100uF 63V a 100uF 100V R23 220 C U8 b 2 C113 R + + C C D18 C93 47n C108 2200uF 100V B R L2 1 4 2200uF 100V C76 100n 3 47n C107 C94 47n + 22V (Relay, LED) KBL04 +60V Preamp + C92 3 R1 ~10V LM317 +Vout Single transistor or JFET C b 1 10 1W Vin ADJ B 2 1 R17 ~15V + + R -15V Q6 BC560C C -16V R 2 R -Vout L1 LM337 C75 100n R Vin C86 47uF R 3 10 1W U9 b C69 100n R R22 12K 1 C111 4700uF 2 C82 2200uF R18 3 D19 C74 100n ADJ 1 4 C80 2200uF + 22V (Relay, LED, UPC1237) KBL04 R C106 10uF R C73 100n ~15V (AC Detect for protection) R C91 47n C105 10uF L2 C72 100n R ~ 15V C90 47n Q C88 47uF D17 16V 2W ~ 50V R C C87 47uF D16 16V 2W 15...200W TDA7294 ~ 35V R21 12K C71 100n R1 +16V C85 47uF Q 3 1 S4 +Vout TDA7294 100n LM317 U7 L1 Vin C70 Q PowerAmp -VEE C81 2200uF TDA7294 C 2 10 1W C79 2200uF + + C R2 R16 C68 100n with protection R14 4.7K 5W C63 10000uF 2 X TDA7294 Bridge C62 10000uF ADJ 3 GBPC5008 ~ 20V C R TDA7294 BC550C + Q5 +15V ~ 10V C ADJ D15 10V 2W 2 + + +10V C66 100n C83 100uF 1 1 3 LM317 +Vout U6 -V Vin AC 2 C78 C65 2200uF 100n Relay - C77 2200uF C64 + V, Relay + 100n + D14 10000uF R13 4.7K 5W + 4 C61 UPC1237 C60 10000uF + R15 10 1W PowerAmp +VCC ~220V Q ~ 10V Q D I/O channel, connector for input/output, VCC, VEE, etc... C104 10uF D C67 100n Non-polarized capacitor, C ceramic, or some good quality like WIMA capacitors C89 47n Power C84 47uF 15...200W P S3 ~ 20V - d C ~ 35V Powertransistor or powerfet R2 +9V R20 12K Integrated circuit BC550C ~ 50V D Potentiometer 8 Q4 2X200W Bridge poweramp http://microprojects.rentahost.net 6 C 5 - 4 I/O 3 R 2 Schematics for TDA 729x bridge amp project The assembled poweramp and speaker protection PCB + 1 Bridged poweramp project with TDA 7294 Document last modified and saved: 13 October 2011 11:57 AM  Bridged poweramp project with TDA 7294 - 8 9 - Bridged poweramp project with TDA 7294 Images about TDA 729x bridge amp project Images about the power supply and soft-start for poweramp More power: the paralel TDA project The Bridge-Parallel project is not recommended for average users. Very hard to build and assemble, the PCB is large, great heatshink and high-power transformer required. The power is more than 2x300W, but not stable and quiet like a simple paralleled amplifier. The cheaper “gainclone” TDA7294 not useful for this parallel version, the 7293 or 7294s have higher costs. Not only the one “gainclone” have higher price, 8 circuits required to try this. Make sure that you have enought knowledge and devices to done this if you decide to try out. Document last modified and saved: 13 October 2011 11:57 AM  Bridged poweramp project with TDA 7294 - 10 11 - Bridged poweramp project with TDA 7294 Schematics for TDA 7293 bridge-paralel amp project Schematic of the bridged-paralleled TDA7293 poweramp 1 2 C13 1000uF C33 100n 3 C34 100n 1000uF C14 4 C35 100n C15 1000uF 5 -Vs C36 100n 1000uF C16 6 +Vs C37 100n C17 1000uF 7 C38 100n 1000uF C18 8 C39 100n C19 1000uF C40 100n 1000uF C20 C29 10p 100n 100n C62 C63 C22 S2 C21 1000uF 100n 100n C64 C65 R28 2.2K D2 BC640 -Vs +Vs 8 7 11 STBY GND 13 D 3 4 SGND R10 22K 10 Mute C8 10uF T 9 STBY TDA7293 U4 1 Buffer DRV Boot loader -Vs (Power) +Vs (Power) Clip Detect C4 470p 2 InIn+ 12 5 Bootstrap R20 2.2 2W -Vs (Power) 13 +Vs (Power) 15 R19 2.2 2W 5 Clip Detect Out R16 680 C61 47uF MUTE SW C12 22uF T 47uF LED 1000uF C52 100n 4A 28V C25 100n C44 STBY GND 1 12 Boot loader 1000uF MUTE SW SGND -Vs +Vs In- C68 10uF 10 C69 10uF 4 3 2 C28 C54 100n S3 Mute C 9 8 C53 100n 1000uF STBY In+ 7 Buffer DRV 11 22K R12 6 +Vs (Power) Out Bootstrap Clip Detect -Vs (Power) R26 10K C26 F1 1000uF 14 U8 TDA7293 13 Bootstrap 6 12 C50 100n C24 5 D7 1N4148 -Vs (Power) In- +Vs 5 15 -Vs In+ R24 30K 14 Out +Vs (Power) 2 Clip Detect 13 2 SGND Boot loader 3 11 4 3 +Vs 4 Mute U7 TDA7293 Buffer DRV 1 10 -Vs C66 10uF 7 -Vs +Vs C23 1000uF In- C67 10 STBY STBY GND 1 STBY GND SGND 9 10uF 8 C48 100n Mute 9 8 C47 100n STBY In+ 7 6 12 Boot loader R25 10K Bootstrap Out 15 22K R11 14 Clip Detect Buffer DRV 1N4148 14 -Vs (Power) 5 U6 TDA7293 15 13 5 D6 11 Out +Vs (Power) Bootstrap Clip Detect R23 30K 14 Q2 100n 100n C42 C32 10p 14 Out C60 C43 C10 22uF T 15 11 C11 22uF T R9 22K 6 TDA7293 U3 Buffer DRV 7 8 STBY Bootstrap 9 R8 22K 6 R14 680 Mute Boot loader 10 R15 680 -Vs SGND 12 R6 22K +Vs In+ 4 STBY GND STBY GND 1 3 10uF T IN C7 C6 10uF T 9 TDA7293 U2 In- 1 -Vs +Vs 8 7 11 13 Buffer DRV Boot loader 10 10p 2 R22 44K -Vs (Power) U5 TDA7293 C45 100n C46 100n STBY R5 22K C3 470p R21 44K 6 12 Boot loader Buffer DRV 11 In- +Vs In+ 8 2 SGND STBY GND 1 3 -Vs 4 Mute 7 10 STBY Mute 4 47uF R27 2.2K LED D1 SGND 3 C59 BC640 9 Clip Detect C2 470p 2 C31 15 100n C41 C 5 6 R18 2.2 2W InIn+ 12 R17 2.2 2W Out Bootstrap 14 5 +Vs (Power) 15 14 Q1 47uF C58 22uF T -Vs (Power) -Vs (Power) +Vs (Power) 15 11 Buffer DRV 7 C9 Clip Detect C30 10p +Vs (Power) TDA7293 U1 Out R4 22K 13 STBY Bootstrap 9 R13 680 Mute R3 22K 6 10 SGND Boot loader R1 22K In+ 12 4 +Vs 8 3 10uF T IN C5 In- -Vs 2 STBY GND C1 1 D R2 22K 13 R7 22K 470p C27 1000uF 1000uF +24V LED K2 K1 S1 D4 LS1 SW 10uF C70 C49 100n 3 V OUT GND C51 100n MG1 C71 10uF R38 56K R39 56K R40 56K R43 10 C74 4.7uF 1N4148 D9 C75 33uF D10 1N4148 1 2 3 4 5 6 7 8 C72 C73 22n 330uF R42 56K 2 U10B 7 5 LM324 2 LM324 A D11 1N4004 IRF640 100K NTK1 5.6k 10k NTH4G1 + C56 10 R37 100K U10C 8 13 LM324 12 9 U10D D12 1N4004 IRF640 14 LM324 A Q5 C57 6 7 + 1.2K 100n IRF640 5 A MG3 10n 47K - 12V FAN R33 D5 LED R45 4 - 12V FAN MG2 Q4 TR1 C76 R36 6.8K R44 3 100n 1 100n 6 2X400W gainclone TDA7293 + C55 TR2 10k 400W 4Ohm UPC1237 U11 A U10A LS2 RELAY RELAY Q3 R35 100K 400W 4Ohm R41 56K R34 100K 3 9.2K R30 D8 1N4148 1 1 V IN 11 AC Input ~15V B U9 78L12 t R32 1.2K D3 4 LED R29 2.2K 2 R31 4.7K B D13 1N4004 A - 12V FAN 8 Document last modified and saved: 13 October 2011 11:57 AM  GND -V L1 R1 C R2 C D C I/O + C i Q o LED 7812 C R S g U+ JJ d s C D g Q d C C s C D g 4 X IRF640 C R FAN C R C c d FAN Q s c C C U D R + + Relay C R R C h U- C I/O C+ C Jumper U- - C U- J I/O J D h c c b b I/O f c Inputs g C C R1 C C Trimmer potentiometer Resistor Powertransistor or powerfet Single transistor or JFET Dual transistor or JFET Diode TR R Q Q Q D C C c Q f1 C C R clip led a C c Q C + U U h f1 P e b U- C a J C R1 U- R U- b C C C C g1 C Potentiometer C C C + Power IC Integrated circuit Integrated circuit Integrated circuit C Q c g g Q R U R J Good quailty non-electrolic polarized capacitor, for like Tantal Electrolic capacitor C C Power Non-polarized capacitor, C ceramic, or some good quality like WIMA capacitors NTK C C J + Relay s U+ e1 L2 + S Q d g1 C C Q C Q C C U+ C C e1 e1 R2 R J C C C C c Q C b g1 C C R2 2X350W Bridge parallel poweramp http://microprojects.rentahost.net + PWM Out D g g1 C R + I/O channel, connector for input/output, VCC, VEE, etc... FAN Q C C J C LM324 U C C e f (input) c Q b a e1 L2 + Connector c C U- clip led a C Q 13 - Fuse C C C b + C J U+ C C L1 + R J D R R R R c C R Q + R C L1 R C C c g L2 b R AC + + + UPC1237 + R Relay - + + V, Relay + + + + R c + I/O + + + + + I/O + R R + + R R + R + Q + + with protection + + R + R R R + R + + + + R + + R + + + + R R TR + + + 2 X TDA7293 Bridge/Parallel + + + + R R TR R R R + + R + + c + R R + J R + + Visit the Picasa gallery of this project: + + + + https://picasaweb.google.com/105028544937175433650/My2x400WRackPACircuit + Images about TDA 7293 amp project Images about TDA7293 bridged-paralleled poweramp R Bridged poweramp project with TDA 7294 - 12 Bridged poweramp project with TDA 7294 PCB for TDA 7293 bridge amp project The assembled poweramp and speaker protection PCB + + I/O R R I/O Document last modified and saved: 13 October 2011 11:57 AM