TB2902HQ Toshiba, TB2902HQ Datasheet
TB2902HQ
Specifications of TB2902HQ
Available stocks
Related parts for TB2902HQ
TB2902HQ Summary of contents
Page 1
... TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic Maximum Power 41 W BTL × 4-ch Audio Power IC The TB2902HQ is 4ch audio amplifier for car audio application. This IC can generate high power, high quality sound output, P MAX = 41 W, using a pure complementary P-ch and N-ch OUT DMOS output stage. ...
Page 2
... Some of the functional blocks, circuits, or constants labels in the block diagram may have been omitted or simplified for clarity TAB V V CC2 CC1 Out1 (+) 9 PW-GND1 8 7 Out1 (−) Out2 (+) 5 PW-GND2 2 3 Out2 (−) Out3 (+) 17 PW-GND3 18 19 Out3 (−) Out4 (+) 21 PW-GND4 24 23 Out4 (− Bus Diagnosis 2 TB2902HQ + SCL SDA 2004-08-18 ...
Page 3
... V1 = 20dB V2 = 6dB V (BTL 26dB V (BTL) changed from 0dB to −14dB so that the output Figure 2 Pin 16 Muting Circuit 3 TB2902HQ Rapidly Falls (pin 16 mute circuit From low voltage muting circuit 2004-08- Bus ...
Page 4
... The sensitivity of the circuit to clipping level can be selected T.H. 10% via I In the event that this function is not used, pin4 should be left open circuit. Clip detector Output AC waveform Internal detection circuit Clip Det output GND Waveform L.P.F output 4 L.P.F. smoothing circuit Figure 3 Clip Detection 4 TB2902HQ C bus. 2 Volume control circuit Tone control circuit 2004-08-18 ...
Page 5
... Reduces noise and provides sufficient oscillation margin Pop noise becomes larger Pop noise becomes smaller Muting ON/OFF time is Muting ON/OFF time is shorter longer Power supply ripple filtering C bus TB2902HQ Notes Value Pop noise is concerned with this capacitor. transients during engine CC C mute command. 2 2004-08-18 ...
Page 6
... Clip Det Pin change to Offset Det ⎯ ⎯ ⎯ ⎯ Fast mute ON/OFF Current Detection. Level change from 500 (max) to 300 mA (max 7 TB2902HQ Details Details Function Function C bus stage. 2004-08-18 Hex D8H Hex 01H 02H ...
Page 7
... bit = 1: <250 mA, 0: >500 mA (IB2 − bit = 1: <100 mA, 0: >300 mA) ⎯ ⎯ ⎯ Diagnotic status (= IB1 − D6 bit = 1: diag enable) ⎯ ⎯ ⎯ Stand-by status (= IB2 − D4 bit = 1: play) 7 TB2902HQ At “Bit = 1” Condition CC At “Bit = 1” Condition CC At “Bit = 1” Condition CC 2004-08-18 ...
Page 8
... Ch4 Diagnosis condition (bit = 1: permanent, 0: turn-on Ch4 Current Detection (at IB2 enable only) (IB2 − bit = 1: <250 mA, 0: >500 mA (IB2 − bit = 1: <100 mA, 0: >300 mA) ⎯ ⎯ ⎯ ⎯ x ⎯ ⎯ ⎯ ⎯ TB2902HQ At “Bit = 1” Condition 2004-08-18 ...
Page 9
... Figure 5 Number of Times Turn ON Diagnosis Timing Chart READ DATA Permanent diagnostic enable Turn On diagnostic DATA Permanent diagnostic permitted time DATA permitted time WRITE DATA To become standby off (turning or power ON) READ DATA Turn On diagnostic between On and Off time (100 ms typ.) 9 TB2902HQ READ DATA FAULT event 2004-08-18 ...
Page 10
... The Data just received was detected You have to read for an on the previous diagnostic cycle. interval of 150 ms or more to get a valid reading. Reading 2 About 100 m When “Diag enable” goes high, “Latch” is reflected at the “Fault event”. 10 TB2902HQ Reading 3 Diag cycle with Turn-ON 2004-08-18 ...
Page 11
... Figure 6 Turn on Diagnosis Timing Chart when Turn on diagnosis not used. You can select the acquisition time determined by the speed of microcomputer. Reading 3 Reading 5 Reading 2 Reading 4 About 100 ms About 80 ms About 80 ms Turn ON diagnosis enable Turn ON diagnosis defeat 11 TB2902HQ Reading 6 voltage. CC 2004-08-18 ...
Page 12
... Turn On diagnostic acquisition time (80 ms typ.) Figure 7 Permanent Diagnosis Timing Chart for Each Short Detection READ DATA READ DATA result faulty Permanent diagnostic DATA permitted time FAULT FAULT event removed 12 TB2902HQ READ DATA READ DATA result faulty result not faulty 2004-08-18 ...
Page 13
... Hz, and to obtain 2 or more readings in order not to make a misjudgment Additionaly, the threshold level is designed at +/−2 V. READ DATA READ DATA result faulty result not faulty Correct Tvos Correct Tvos Permanent diagnostic DATA permitted time FAULT FAULT event removed 13 TB2902HQ READ DATA result not faulty 2004-08-18 ...
Page 14
... Offset detector Vth Output waveform Vth Offset detector output pin 4 Waveform L.P.F output Figure 9 Hardware Output Offset Detection L.P.F. smoothing circuit Abnormal offset occured Volume down Detection delay time 14 TB2902HQ Volume control circuit System shut down Judgement Waiting time for Prevention misjudgement 2004-08-18 ...
Page 15
... Note 8: Please arrange to read all self-diagnosis functions twice or more and apply judgment in order to avoid false triggering. <Since the first diagnostic result has low confidence, please diagnose 2 times or more.> WRITE DATA mute off READ DATA READ DATA invalidity invalidity 15 TB2902HQ READ DATA READ DATA validity validity Effective → 2004-08-18 ...
Page 16
... S.GND (out−) S.V CC S.GND or S.V CC S.GND (Note 10) S.GND or S.V CC S.GND (Note 10) S TB2902HQ Out to Out. S Open L S.GND + No open S.GND S.GND + No open S.GND + S.Load + S.V + S.Load CC S.V CC open or No open S.Load + No open S.Load Open Out to Out. S Open L S.GND S.GND (Note 9) S ...
Page 17
... Amplifier mode diagnostic ( Line driver mode diagnostic ( Current Det. diag enabled ( Current Det. diag defeat ( Front Channels Work standard mode ( Work Low Iccq mode ( Rear Channels Work standard mode ( Work Low Iccq mode ( TB2902HQ 2004-08-18 ...
Page 18
... Short load ( Channel 1 Turn-on diag: No open load ( Offset diag: No output offset ( Channel 1 ( short ( Short Channel 1 No short to GND ( Short to GND ( Open load detected ( Output offset detected ( TB2902HQ 2004-08-18 ...
Page 19
... Offset diag: No output offset ( Channel 2 ( short ( Short Channel 2 No short to GND ( Short to GND ( Note 12: DBx (D5) is effective only at the time of “Current detection enable”. Open load detected ( Output offset detected ( TB2902HQ 2004-08-18 ...
Page 20
... Short load ( Channel 3 Turn-on diag: No open load ( Offset diag: No output offset ( Channel 3 ( short ( Short Channel 3 No short to GND ( Short to GND ( Open load detected ( Output offset detected ( TB2902HQ 2004-08-18 ...
Page 21
... Offset diag: No output offset ( Channel 4 ( short ( Short Channel 4 No short to GND ( Short to GND ( Note 13: DBx (D5) is effective only at the time of “Current detection enable”. Open load detected ( Output offset detected ( TB2902HQ 2004-08-18 ...
Page 22
... OUT or shorted to GND condition, the voltage between speaker will be CC Possible to play music if the mute off write command is sent at Turn on diag enable Possible to play music if the mute off write command is sent at Turn on diag defeat 22 TB2902HQ 5 V AMP Comparator S AMP I = constant current ...
Page 23
... DB3 Sub-address ACK IB 1 X0X0000X Sub-address ACK IB 1 X0XXXXXX Sub-address ACK IB 1 XX1XX11X DB1 ACK DB2 ACK DB3 23 TB2902HQ ACK IB2 ACK STOP ACK DB4 ACK STOP ACK IB2 ACK STOP XXX1X0XX ACK IB2 ACK STOP XXX0XXXX ACK ...
Page 24
... I C Bus control format outline The BUS control format of TB2902HQ is based on the Philips I Data Transmission Format S Slave address 7 bit MSB Note 18 transmitting, without forgetting. P conditions. (1) Start conditions & stop conditions SDA SCL S Start conditions (3) Acknowledgement SDA from a master High impedance ...
Page 25
... Read mode The slave address became the read mode by changing the 8 Bit of the slave address from The data output from TB2902HQ starts after the micro controller receives the ACK 1 bit which follows a slave address. Stop condition are shown in the under the map. ...
Page 26
... Before using, creating and/or producing designs, refer to and comply with the precautions and conditions set forth in this documents. Symbol Rating Unit (surge (DC (opr (peak 125 W (Note 19) − °C opr − 150 T °C stg 26 TB2902HQ 2004-08-18 ...
Page 27
... For operation, mute enable ⎯ VSM L For mute, stand by OFF Mute: ON ⎯ ATT M = 7.75 Vrms → Mute: OFF V OUT ⎯ Low (01H (1) ⎯ High (01H (2) 27 TB2902HQ Min Typ. Max ⎯ 200 300 ⎯ ⎯ 41 ⎯ ⎯ 37 ⎯ ⎯ ...
Page 28
... Current detector threshold 1 Current detector threshold bus interface Clock frequency Test Condition Under stand-by condition Under stand-by condition Power amplifier in mute or play Power amp mode only Power amplifier in play (no signal) 28 TB2902HQ Min Typ. Max Unit ⎯ ⎯ 1.2 V − ⎯ ...
Page 29
... TAB V V CC2 CC1 Out1 ( + ) 9 PW-GND1 8 7 Out1 ( − ) Out2 ( + ) 5 PW-GND2 2 3 Out2 ( − ) Out3 ( + ) 17 PW-GND3 18 19 Out3 ( − ) Out4 ( + ) 21 PW-GND4 24 23 Out4 ( − I2C 25 Bus Diagnosis 29 TB2902HQ + SCL SDA 2004-08-18 ...
Page 30
... Filter 100 kHz 1kHz 10 10 kHz : 400 kHz : 400 0.5 0.3 0.1 0.05 0.03 0.01 0.005 0.003 0.001 30 50 0.1 0.3 100 30 TB2902HQ THD – P (ch2) OUT : 400 kHz : 400 Hz~30 kHz 20 kHz 10 kHz 100 kHz 0.5 0 100 ...
Page 31
... 26dB Ω kHz 13.2 V Filter 10 400 kHz 0.5 0.3 16.0 V 0.1 0.05 0.03 0.01 0.005 0.003 0.001 30 100 0.01 0.03 31 TB2902HQ THD – P (ch2) OUT 13 9.0 V 0.1 0 100 Output power P (W) OUT THD – P (ch4) OUT 13 9.0 V 0.1 0 100 ...
Page 32
... Frequency f (Hz 13 Ω OUT = filter 0.3 0.1 1ch 0.03 3ch 4ch 0.01 2ch 0.003 0.001 10 100 100 k Frequency f (Hz) 32 TB2902HQ R.R. – f 3ch 4ch 100 k THD – 100 k 2004-08-18 ...
Page 33
... Ambient temperature Ta (°C) 33 TB2902HQ V – P (ch2) IN OUT 100 Hz 1 kHz 10 kHz kHz 13 Ω No filter Input voltage V (Vrms – P (ch4) IN OUT 100 Hz ...
Page 34
... Ω 4ch drive 100 Ω TB2902HQ C.T. – f (ch2) ch1 ch3 ch4 100 100 k Frequency f (Hz) C.T. – f (ch4) ch3 ch2 ch1 100 100 k Frequency f (Hz) P – ...
Page 35
... 26dB Ω kHz 13.2 V Filter 10 400 Hz~30 kHz 0.5 0.3 0.1 0.05 0.03 0.01 16.0 V 0.005 0.003 0.001 30 100 0.01 0.03 0.1 35 TB2902HQ THD – P (ch2) OUT 13 9.0 V 16 100 Output power P (W) OUT THD – P (ch4) OUT 13 9.0 V 16 100 Output power P ...
Page 36
... P – OUT 100 kHz Ω 4ch drive Output power P (W) OUT 25 36 TB2902HQ 2004-08-18 ...
Page 37
... Package Dimensions Weight: 7.7 g (typ.) 37 TB2902HQ 2004-08-18 ...
Page 38
... The product is often the final stage (the external output stage circuit. Substandard performance or malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the product. 38 TB2902HQ 030619EBF 2004-08-18 ...