Tr i path Technol ogy, I nc. - Technical Information RB-TK2051 CLASS-T DIGITAL AUDIO AMPLIFIER 6 CHANNEL TK2051 REFERENCE BOARD Technical Information - Board Rev. 2.2 Revision 1.0 – June 2002 GENERAL DESCRIPTION The RB-TK2051 Revision 2.2 is a 6 channel, 50W per channel, audio amplifier designed to provide a simple and straightforward reference design for the TK2051 amplifier in a small footprint (3.75” X 4.75” including connectors). For additional documentation on the TK2051, see the TK2051 Data Sheet. APPLICATIONS 6Ω and 8 Ω multi-channel 4 Ω mono (parallel operation) Home Theater Receivers Multi-channel Distribution Powered DVD Systems Mini/Micro Systems BENEFITS More power per cubic inch for 50W/Channel design Simplifies thermal management Signal Quality comparable to high quality, linear amplifiers Simple building block for multi-channel design 1 FEATURES High Continuous Power: 46W @ 6Ω 50W @ 8Ω * 1/8 power for 1 hour followed by full power for 5 minutes. Low Noise Floor: <135uV A-weighted Low Distortion: .005% THD+N, 20W, 6Ω .005% THD+N, 30W, 8Ω High Efficiency: 85% @ 46W, 6Ω 89% @ 59W, 8Ω Over-Current Protection Over and Under Voltage Protection Over Temperature Protection RB-TK2051 – Rev. 1.0/06.02 Tr i path Technol ogy, I nc. - THD+N vs. OUTPUT POWER (per channel) THD+N vs. OUTPUT POWER (per channel) 10 10 f=1kHz RL=6Ω VCC=23.5V AES17 1 % f=1kHz RL=8Ω VCC=30V AES17 Filter 1 0.1 % 0.1 0.01 0.01 0.001 0.001 1 2 5 10 W 20 50 100 1 2 THD+N vs OUTPUT POWER (parallel operation) 5 10 W 20 50 100 EFFICIENCY vs OUTPUT POWER (parallel operation) 10 90 f=1kHz RL=4Ω VCC=30V AES17 80 f=1kHz RL=4Ω VCC=30V 70 EFFICIENCY (%) 1 % Technical Information 0.1 60 50 40 30 20 0.01 10 0 0.001 1 2 5 10 20 50 100 0 200 10 20 30 40 50 60 70 80 90 100 110 120 OUTPUT POWER (W) W EFFICIENCY vs OUTPUT POWER (per channel) EFFICIENCY vs OUTPUT POWER (per channel) 90 90 80 80 60 50 EFFICIENCY (%) EFFICIENCY (%) f=1kHz RL=6Ω VCC=23.5V 40 30 60 50 40 30 20 20 10 10 0 0 0 5 10 15 20 25 30 35 OUTPUT POWER (W) 2 F=1kHz RL=8Ω VCC=30V 70 70 40 45 50 0 5 10 15 20 25 30 35 40 45 OUTPUT POWER (W) RB-TK2051 – Rev. 1.0/06.02 50 55 60 Tr i path Technol ogy, I nc. - Technical Information OPERATING INSTRUCTIONS BOARD CONNECTION DIAGRAM Audio Source V5 +- OUT: 6 5 4 G5 3 2 1 VCC -+ J1 IN6 IN5 IN4 G5 IN3 IN2 IN1 MUTE G5 JP2 V5 G5 GND VCC OUT 1 V5 R33 - OUT 2 + Heatsink R32 OUT 2 R67 ** JP4 OUT 1 + ** R66 - OUT 3 - JP1 OUT 3 + OUT 4 - OUT 4 + OUT 5 - JP3 OUT 5 + ** R24 R16 OUT 6 - OUT 6 + RB-TK2051 6 CHANNELREFERENCE POWER SUPPLIES Two external power supplies are required to operate the RB-TK2051: VCC (referenced to GND), and V5 (referenced to G5). The V5 ground (G5) must be kept separate from the VCC ground (GND). GND and G5 are joined at a common point on the EB-TK2051 with a 0Ω resistor (R1). The Minimum and Maximum VCC supply voltages are +10V and +30V, respectively. The V5 supply voltage is 5V. Please see the TK2051 Data Sheet for Minimum and Maximum values. The VCC and V5 power supply connection is a standard 4-pin .156” Molex header (JP4). Please refer to the Board Connection Diagram for the connector locations on the EB-TK2051. OUTPUT The output connections for each channel of the RB-TK2051 are made with standard 4-pin .156” Molex headers (JP1, JP3, JP4). The output of the TK2051 is differential; therefore each output has a positive output (OUT_+) and a NEGATIVE OUTPUT (OUT_-). Please refer to the Board Connection Diagram for the connector locations on the RB-TK2051. INPUT The input connections of the RB-TK2051 are made with a standard 7-pin .100” Molex header (J1). There are six inputs and one common Agnd. Please refer to the Board Connection Diagram for the connector locations on the RB-TK2051. 3 RB-TK2051 – Rev. 1.0/06.02 Tr i path Technol ogy, I nc. - Technical Information JUMPER SETTINGS There is a 3-pin header for the MUTE control of the TK2051. With the jumper placed in the G5 position the system is un-muted. When the jumper is placed in the V5 position the mute pin is pulled high (5V) and the amplifiers are muted. Please refer to the Board Connection Diagram for the connector locations on the RB-TK2051. OUTPUT OFFSET NULL There are six potentiometers that are used to manually trim the output offset to 0Vdc. Please refer to the Board Connection Diagram for the potentiometer locations on the RB-TK2051. The Evaluation board is shipped with the offsets nulled within +/-10mV. GAIN SETTING The gain of the RB-TK2051 Rev 2.2 is set to 15V/V. The gain of the TK2051 is the product of the TC2000 (control stage) gain and the TP2051 (power stage) gain. The control stage gain is set to unity. Before changing the gain of the RB-TK2051, please refer to the Amplifier Gain section of the TK2051 Data Sheet. Performing Measurements on the EB-TK2051 Rev 1.3: The TK2051 operates by generating a high frequency switching signal based on the audio input. This signal is sent through a low-pass filter that recovers an amplified version of the audio input. The frequency of the switching pattern is spread spectrum in nature and typically varies between 100kHz and 1MHz, which is well above the 20Hz – 20kHz audio band. The pattern itself does not alter or distort the audio input signal, but it does introduce some inaudible components. The measurements of certain performance parameters, particularly noise related specifications such as THD+N, are significantly affected by the design of the low-pass filter used on the output as well as the bandwidth setting of the measurement instrument used. Unless the filter has a very sharp roll-off just beyond the audio band or the bandwidth of the measurement instrument is limited, some of the inaudible noise components introduced by the TK2051 amplifier switching pattern will degrade the measurement by including out of band (audio) energy. One feature of the TK2051 is that it does not require large multi-pole filters to achieve excellent performance in listening tests, usually a more critical factor than performance measurements. Though using a multi-pole filter may remove high-frequency noise and improve THD+N type measurements (when they are made with wide-bandwidth measuring equipment), these same filters degrade frequency response. The RB-TK2051 has a simple two-pole output filter with excellent performance in listening tests. (See Application Note 4 for additional information on bench testing) 4 RB-TK2051 – Rev. 1.0/06.02 Tr i path Technol ogy, I nc. - Technical Information Contact Information TRIPATH TECHNOLOGY, INC 2560 Orchard Parkway, San Jose, CA 95131 408.750.3000 - P 408.750.3001 - F For more Sales Information, please visit us @ www.tripath.com/cont_s.htm For more Technical Information, please visit us @ www.tripath.com/data.htm 5 RB-TK2051 – Rev. 1.0/06.02 5 4 3 2 1 D D JP3 OUT5OUT5+ 1 2 3 4 OUT6OUT6+ V5 V5 JP2 + CON4;WM4602-ND SOURCE 6 SOURCE 5 SOURCE 4 C SOURCE 3 J1 1 2 3 4 5 6 7 JP1 OUT3OUT3+ CON4;WM4602-ND 1 2 3 4 OUT4OUT4+ C VCC CON4;WM4602-ND V5 CON7;WM4205-ND SOURCE 2 1 JP4 OUT1OUT1+ SOURCE 1 1 2 3 4 C85 100u;16V;P5529-ND 3 1 2 3 4 OUT2OUT2+ J16 2 MUTE B3S For normal operation, ground J16 CON4;WM4602-ND B B J4 J5 1 1 STANDOFF STANDOFF J2 J3 1 1 R81 0 R52 0 R1 0 A A STANDOFF Title G5 to GND short at a single point, therefore, use only one of these three resistors (0 ohm). STANDOFF Size A Date: 5 4 3 TK2051 6 CHANNEL REFERENCE BOARD Document Number <Doc> Thursday, May 30, 2002 2 Rev 2.2 Sheet 1 of 1 1 5 4 3 2 1 FDBKN1 D 1.0K;1% 3 R80 500K R56 500K C95 2.2u;10V;PCS2225CT-ND + SOURCE 2 8.2K R63 R78 11K VP1 R71 20K V5 R79 22K 1 3 R66 5K POT C96 2.2u;10V;PCS2225CT-ND 2 Nets "IN1" and "IN2" must be very short. R68 500K R72 500K C82 120p;50V V5 C77 .1u;50V FBB1 14K;1% C C72 .1u;50V U6 C98 .1u;50V IN1 V5 REF OCD2 14 16 OCD1 NC 13 17 VLO Y2 12 18 OVRLDB Y2B 11 Y1B 10 19 VHI 20 GND Y1 9 Y2B R70 R58 Y1 V5 HMUTE 8 22 VP1 FDBKN1 7 FDBKN1 IN1 23 IN1 FDBKP1 6 FDBKP1 24 MUTE VPWR 5 25 BBM1 FDBKN2 4 26 BBM0 DCMP 3 VP2 27 VP2 FDBKP2 2 IN2 28 BIASCAP 1 TC2000 1.0K;1% Y1B 21 IN2 FDBKN2 Y2 VP1 MUTE C97 .1u;50V 15 FBA2 14K;1% C83 180p;50V B FDBKN2 FDBKP2 FDBKP2 .1u;50V C94 1.0K;1% R73 R60 IN2 FBB2 14K;1% C84 180p;50V + SOURCE 1 V5 C67 .1u;50V R57 20K B D R69 1.0K;1% V5 2 FBA1 C81 120p;50V R55 1 R67 5K POT R65 FDBKP1 V5 C R74 14K;1% R59 20K VP2 R75 20K A A Title TK2051 6 CHANNEL REFERENCE BOARD Size B Date: 5 4 3 2 Document Number <Doc> Thursday, May 30, 2002 Rev 2.2 Sheet 1 2 of 3 5 4 3 V5 2 VCC U5 Y1 D C90 29 IN1A 23 IBIAS 24 CONFIG 25 PWRDN FBA1 M3 R76 10K C71 .1u;50V R77 10K R62 10K FAULT 26 TRISTATE OUT1A 17 OUT1A 16 GND1A 14 C92 .1u;50V Y2B C69 .47u;50V;P4671-ND C87 .47u;63V;P4544-ND C70 .1u;100V;P4725-ND R61 28 TH_WAR 30 IN1B 31 M5 NC VCC1B 12 10;1W OUT1B 11 OUT1B 10 GND1B 13 C73 .1u;50V VDD 22 VDD 33 VSS 34 VSS 35 VCCSIGN 36 VCCSIGN 20 GNDREG C74 .47u;50V;P4671-ND OUT2L9 M17 VCC2A 7 OUT2A 8 OUT2A 9 GND2A 6 M15 REGULATORS FBA2 L12 10.4uH;American Cores/Amidon AW600-06-40T-24-V OUT1+ C75 .1u;50V C76 .47u;50V;P4671-ND C86 .47u;63V;P4544-ND C93 .1u;50V 32 IN2B 19 GNDCLEAN 1 C 10.4uH;American Cores/Amidon AW600-06-40T-24-V FBB1 IN2A 21 B C88 .1u;50V D OU2+ C68 .1u;50V VCC Y2 10.4uH;American Cores/Amidon AW600-06-40T-24-V VCC 18 + L10 PROTECTION & LOGIC M4 C89 680u;50V;P10330-nd 15 C91 .1u;50V Y1B VCC 27 VCC1A M2 .1u;50V C 1 C78 .1u;100V;P4725-ND B R64 10;1W VCC M16 M14 GNDSUB VCC2B 4 OUT2B 3 OUT2B 2 GND2B 5 TP2051 C79 .1u;50V C80 .47u;50V;P4671-ND OUT1L11 10.4uH;American Cores/Amidon AW600-06-40T-24-V FBB2 A A Title TK2051 6 CHANNEL REFERENCE BOARD Size B Date: 5 4 3 2 Document Number <Doc> Tuesday, June 04, 2002 Rev 2.2 Sheet 3 1 of 3 5 4 3 2 1 R43 FDBKN1 D R28 FBA3 14K;1% D C48 150p;50V 1.0K;1% FDBKP1 R35 14K;1% V5 1.0K;1% 1 C R6 2 R8 500K C62 2.2u;10V;PCS2225CT-ND + SOURCE 4 V5 R51 500K 3 R33 5K POT C4 .1u;50V C65 .1u;50V IN1 V5 R49 22K C63 2.2u;10V;PCS2225CT-ND R39 500K C44 .1u;50V C20 .1u;50V Nets "IN1" and "IN2" must be very short. REF 16 OCD1 VLO OCD2 14 NC 13 Y2 12 18 OVRLDB Y2B 11 19 VHI Y1B 10 20 GND Y1 9 FDBKN2 Y4 V5 HMUTE 8 VP1 FDBKN1 7 FDBKN1 IN1 23 IN1 FDBKP1 6 FDBKP1 24 MUTE VPWR 5 25 BBM1 FDBKN2 4 BBM0 VP2 27 VP2 IN2 28 IN2 TC2000 DCMP FDBKP2 2 BIASCAP 1 FBA4 C50 270p;50V B FDBKN2 FDBKP2 FDBKP2 R41 14K;1% R13 FBB4 C51 270p;50V 1.0K;1% .1u;50V C61 IN2 R10 Y3 22 3 R36 14K;1% Y3B 21 26 1.0K;1% Y4B VP1 MUTE C64 .1u;50V 15 + SOURCE 3 2 R34 500K C V5 17 R38 20K 1 3 R32 5K POT R20 R48 11K VP1 V5 C49 150p;50V U4 8.2K R9 20K B V5 FBB3 R11 20K A A VP2 R44 20K Title TK2051 6 CHANNEL REFERENCE BOARD Size B Date: 5 4 3 2 Document Number <Doc> Thursday, May 30, 2002 Rev 2.2 Sheet 1 2 of 3 5 4 3 2 1 V5 VCC U1 Y3 D C57 FBA3 29 IN1A 23 IBIAS 24 CONFIG 25 PWRDN M3 R17 10K C C16 .1u;50V R47 10K FAULT 26 TRISTATE 17 OUT1A 16 GND1A 14 L6 C59 .1u;50V C14 .1u;100V;P4725-ND R15 28 TH_WAR 30 IN1B 31 M5 NC Y4B M17 IN2A 21 VDD 22 VDD 33 VSS VCC1B 12 10;1W OUT1B 11 OUT1B 10 GND1B 13 C26 .1u;50V 34 VSS 35 VCCSIGN 36 VCCSIGN 20 GNDREG VCC2A 7 OUT2A 8 OUT2A 9 GND2A 6 M15 REGULATORS C29 .47u;50V;P4671-ND L5 10.4uH;American Cores/Amidon AW600-06-40T-24-V 32 IN2B 19 GNDCLEAN 1 C OUT4- FBB3 FBA4 L8 10.4uH;American Cores/Amidon AW600-06-40T-24-V OUT3+ C34 .1u;50V C43 .47u;50V;P4671-ND C53 .47u;63V;P4544-ND C60 .1u;50V B C55 .1u;50V C13 .47u;50V;P4671-ND C54 .47u;63V;P4544-ND VCC Y4 D OUT4+ C5 .1u;50V VCC 18 + 10.4uH;American Cores/Amidon AW600-06-40T-24-V PROTECTION & LOGIC M4 C56 680u;50V;P10330-nd OUT1A C58 .1u;50V Y3B VCC 27 15 M2 .1u;50V R46 10K VCC1A C45 .1u;100V;P4725-ND B R25 10;1W VCC M16 M14 GNDSUB VCC2B 4 OUT2B 3 OUT2B 2 GND2B 5 C46 .1u;50V C47 .47u;50V;P4671-ND OUT3L7 TP2051 10.4uH;American Cores/Amidon AW600-06-40T-24-V FBB4 A A Title TK2051 6 CHANNEL REFERENCE BOARD Size B Date: 5 4 3 2 Document Number <Doc> Tuesday, June 04, 2002 Rev 2.2 Sheet 3 1 of 3 5 4 3 2 1 R3 FDBKN1 D FBA5 14K;1% 1.0K;1% R7 R12 FDBKP1 FBB5 1 V5 1.0K;1% C V5 R18 500K C8 2.2u;10V;PCS2225CT-ND V5 + R21 20K R5 R53 11K VP1 R23 20K V5 1 V5 3 C Nets "IN1" and "IN2" must be very short. 2 R2 500K R26 500K C3 .1u;50V C2 .1u;50V U3 8.2K B R54 22K C27 .1u;50V 15 REF 16 OCD1 OCD2 14 NC 13 17 VLO Y2 12 18 OVRLDB Y2B 11 19 VHI Y1B 10 20 GND 21 V5 VP1 22 VP1 IN1 23 IN1 24 MUTE 25 BBM1 MUTE C9 2.2u;10V;PCS2225CT-ND Y1 9 Y6B 7 FDBKN1 FDBKP1 6 FDBKP1 VPWR 5 FDBKN2 4 BBM0 DCMP 27 VP2 FDBKP2 2 IN2 28 IN2 BIASCAP 1 FBA6 14K;1% C40 390p;50V B Y5 8 VP2 1.0K;1% R22 Y5B HMUTE 3 IN2 Y6 FDBKN1 26 TC2000 R19 FDBKN2 FDBKN2 R27 FDBKP2 FDBKP2 FBB6 14K;1% .1u;50V C7 1.0K;1% R30 C41 390p;50V + SOURCE 5 C39 470p;50V V5 C33 .1u;50V IN1 R24 5K POT 14K;1% R4 500K C1 .1u;50V SOURCE 6 R14 2 3 R16 5K POT D C38 470p;50V R29 20K VP2 A A R31 20K Title TK2051 6 CHANNEL REFERENCE BOARD Size B Date: 5 4 3 2 Document Number <Doc> Thursday, May 30, 2002 Rev 2.2 Sheet 1 2 of 3 5 4 3 2 1 V5 VCC FBA5 U2 Y5 D C12 29 IN1A 23 IBIAS 24 CONFIG 25 PWRDN M3 R45 10K C C18 .1u;50V R40 10K FAULT 26 TRISTATE 17 OUT1A 16 GND1A 14 C30 .1u;50V Y6B C11 .47u;50V;P4671-ND C15 .47u;63V;P4544-ND C17 .1u;100V;P4725-ND R42 28 TH_WAR 30 IN1B 31 M5 NC M17 IN2A 21 VDD 22 VDD 33 VSS VCC1B 12 10;1W OUT1B 11 OUT1B 10 GND1B 13 C22 .1u;50V 34 VSS 35 VCCSIGN 36 VCCSIGN 20 GNDREG VCC2A 7 OUT2A 8 OUT2A 9 GND2A 6 M15 REGULATORS C23 .47u;50V;P4671-ND OUT6L2 32 IN2B 19 GNDCLEAN 1 C 10.4uH;American Cores/Amidon AW600-06-40T-24-V FBB5 FBA6 L3 10.4uH;American Cores/Amidon AW600-06-40T-24-V OUT5+ C24 .1u;50V C25 .47u;50V;P4671-ND C28 .47u;63V;P4544-ND C31 .1u;50V B C19 .1u;50V D OUT6+ C10 .1u;50V VCC Y6 10.4uH;American Cores/Amidon AW600-06-40T-24-V VCC 18 + L1 PROTECTION & LOGIC M4 C37 680u;50V;P10330-nd OUT1A C21 .1u;50V Y5B VCC 27 15 M2 .1u;50V R37 10K VCC1A C32 .1u;100V;P4725-ND B R50 10;1W VCC M16 M14 GNDSUB VCC2B 4 OUT2B 3 OUT2B 2 GND2B 5 TP2051 C35 .1u;50V C36 .47u;50V;P4671-ND OUT5L4 10.4uH;American Cores/Amidon AW600-06-40T-24-V FBB6 A A Title TK2051 6 CHANNEL REFERENCE BOARD Size B Date: 5 4 3 2 Document Number <Doc> Tuesday, June 04, 2002 Rev 2.2 Sheet 1 3 of 3 RB-TK2051 6 Channel Reference Design Ver. 2.2 Bill Of Materials May 30,2002 15:15:07 Page1 Item Quantity Reference Part;Digikey# or American Cores# ___________________________________________________________________________________________________ 1 48 2 3 6 12 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 6 6 3 2 2 2 2 2 2 1 4 1 4 1 12 19 20 3 12 21 12 22 23 3 12 C1,C2,C3,C4,C5,C7,C10, C12,C16,C18,C19,C20,C21, C22,C24,C26,C27,C30,C31, C33,C34,C35,C44,C46,C55, C57,C58,C59,C60,C61,C64, C65,C67,C68,C71,C72,C73, C75,C77,C79,C88,C90,C91, C92,C93,C94,C97,C98 C8,C9,C62,C63,C95,C96 C11,C13,C23,C25,C29,C36, C43,C47,C69,C74,C76,C80 C14,C17,C32,C45,C70,C78 C15,C28,C53,C54,C86,C87 C37,C56,C89 C38,C39 C40,C41 C48,C49 C50,C51 C81,C82 C83,C84 C85 JP1,JP2,JP3,JP4 J1 J2,J3,J4,J5 J16 L1,L2,L3,L4,L5,L6,L7,L8, L9,L10,L11,L12 R1,R52,R81 R2,R4,R8,R18,R26,R34,R39, R51,R56,R68,R72,R80 R3,R12,R19,R27,R35,R36, R41,R43,R69,R70,R73,R74 R5,R20,R63 R6,R7,R10,R13,R14,R22, .1u;50V 2.2u;10V;PCS2225CT-ND .47u;50V;P4671-ND .1u;100V;P4725-ND .47u;63V;P4544-ND 680u;50V;P10330-ND 470p;50V 390p;50V 150p;50V 270p;50V 120p;50V 180p;50V 100u;16V;P5529-ND CON4;WM4602-ND CON7;WM4205-ND 4-40 1/4" STANDOFF 3pin .100" header 10.4uH;American Cores/Amidon AW600-06-40T-24-V 0 500K 14K;1% 8.2K 1.0K;1% 24 12 25 26 27 6 6 9 28 29 30 31 3 3 3 3 R28,R30,R55,R58,R60,R65 R9,R11,R21,R23,R29,R31, R38,R44,R57,R59,R71,R75 R15,R25,R42,R50,R61,R64 R16,R24,R32,R33,R66,R67 R17,R37,R40,R45,R46,R47, R62,R76,R77 R48,R53,R78 R49,R54,R79 U1,U2,U5 U3,U4,U6 20K 10;1W 5K POT 10K 11K 22K TP2051 TC2000