TB2902H - TV SAT ELECTRONIC

TB2902H - TV SAT ELECTRONIC
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TB2902H
TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic
TB2902H
Maximum Power 41 W BTL
4-ch Audio Power IC
The TB2902H is 4ch audio amplifier for car audio application.
This IC can generate more high power: POUT MAX = 41 W and
high quality sounds as it is included the pure complementary
P-ch and N-ch DMOS output stage.
The included self diagnosis function can be controlled via I2C
BUS.
Additionally, stand-by function, mute function and various kind
of protector are included.
Features
High power output
Weight: 7.7 g (typ.)
: POUT MAX (1) = 41 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 )
: POUT MAX (2) = 37 W (typ.)
(VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 )
: POUT MAX (3) = 70 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 2 )
: POUT (1) = 27 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, R L = 4 )
: POUT (2) = 23 W (typ.)
(VCC = 13.2 V, f = 1 kHz, THD = 10%, R L = 4 )
: POUT (3) = 45 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, R L = 2 )
Low distortion ratio: THD = 0.015% (typ.)
(VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4
Low noise: VNO = 90 µVrms (typ.)
(VCC = 13.2 V, R g = 0 , BW = 20 Hz to 20 kHz, RL = 4
Built in stand by&muting function: controlled via
I 2C
)
)
Bus (pin16)
Built in clipping detection (pin 4)
Built in I2C Bus for stand-by, mute, voltage gain control, self diagnosis: Output short detection, offset detection,
tweeter or speaker open detection (pin22 and 25)
Built-in various protection circuits (Note 1, Note 2)
Thermal shut down, over-voltage, out to GND, out to VCC, out to out short
Operating supply voltage: VCC (opr) = 9 to 18 V (RL = 4
VCC (opr) = 9 to 16 V (RL = 2
)
)
Note 1: Install the product correctly. Otherwise, it may result in break down, damage and/or degradation to the
product or equipment.
Note 2: These protection functions are intended to avoid some output short circuits or other abnormal conditions
temporarily. These protect functions do not warrant to prevent the IC from being damaged.
- In case of the product would be operated with exceeded guaranteed operating ranges, these protection
features may not operate and some output short circuits may result in the IC being damaged.
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TB2902H
Block Diagram
20
VCC1
7
5
C1
12
IN2
2
3
C4
16
Standby&
Mute
17
15
IN3
18
C1
19
13 Pre-GND
14
21
IN4
24
C1
23
Out1 ( )
Out2 ( )
PW-GND2
Out2 ( )
Out3 ( )
PW-GND3
Out3 ( )
Out4 ( )
PW-GND4
Out4 ( )
22
SCL
25
SDA
2
SW
4 Clip Detection
PW-GND1
4
8
RL
IN1
4
11
RL
C1
Out1 ( )
4
9
RL
6
VCC2
4
1
TAB
RL
10
Ripple
C3
C5
C2
B
IC
Bus
Diagnosis
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for
explanatory purpose
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TB2902H
Caution and Application Method (description is made only on the single channel.)
1. Voltage Gain Adjustment
This IC has no NF (negative feedback) Pins. Therefore, the voltage gain can not be adjusted, but it makes
the device a space and total costs saver.
Amp. 2A
Amp. 1
Input
Amp. 2B
Figure 1
Block Diagram
In case of GV 26dB, it is calculated by below expression:
The voltage gain of amp.1: G V1 0dB
The voltage gain of amp.2A, B: G V2 20dB
The voltage gain of BTL connection: G V (BTL) 6dB
Therefore, the total voltage gain is decided by expression below.
GV GV1 GV2 GV (BTL) 0 20 6 26dB
While, in case of GV 12dB selected via I2C, GV1 change from 0dB to 14dB so that the output dynamic
range becomes lower as the output of Amp.1 is suppressed.
2. Muting Time Constant and Pop Noise Suppression at VCC Rapidly Falling (pin 16)
The capacitor C4 at pin 16 is for muting time constant to suppress the pop noise. The larger value
capacitor is used, the lower pop noise becomes but the longer the muting time from the mute ON command
sent to muting an output sound actually.
Additionally, the initial condition after turning
on or stand by off by setting of I2C Bus is in
muting condition so that it is necessary to send
the mute off command to change from this
condition to play mode.
16
To Mute Circuit
C4
1 F
As the VCC is rapidly falling, the IC internal
low voltage muting operates to eliminate the
large pop noise basically.
If the effect of the internal low voltage muting
is not enough in such a case, make this pin 16 set
at low: 5 V and less by external circuit for more
effective to suppress the pop noise.
In this case, this pin 16 has to be released from
setting at low before going back to play mode.
From low voltage
muting circuit
Figure 2
Pin 16 Muting Circuit
Caution for the muting operation and the application.
Audio muting function is enabled when pin 16 is not set at Low. When the time constant of the muting
function is determined by C4, it should take into account the pop noise. The pop noise which is generated
when the power or muting function is turned ON/OFF will vary according to the time constant.
In case of the longer time constant using, set the C4 become larger value.
The effective time constant to suppress the pop noise is during the pin 16 voltage falling. Therefore, the
pop noise may become a peaky sound if the mute ON or OFF command is sent from Controller during the
pin 16 voltage rising.
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TB2902H
3. Clip Detection
The output clip detection terminal of pin 4 has the open collector output structure on chip as shown in
Figure 3. In case that the output waveform is clipping, the clip detection circuit is operated and NPN Tr. Is
turned on.
It is possible to improve the audio quality with controlling the volume, tone control circuit through L.P.F.
smoothing circuit as shown in Figure 3.
The sensitivity of clipping level can be selected T.H.D. 1 % or 10% via I 2C bus.
In case of being unused this function, use this IC as open connection on pin4.
4
Volume control circuit
L.P.F.
Smoothing
circuit
Clip Detector
Tone control circuit
Output AC
Waveform
Internal Detection
Circuit
Clip Det. 5 V
Output
GND
Waveform L.P.F
Output
Figure 3
Clip Detection
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TB2902H
4. External Component Constants
Component Recommended
Name
Value
C1
0.22 F
Effect
Purpose
To eliminate DC
Lower than Recommended
Value
Cut-off frequency becomes
higher
Higher than Recommended
Value
Cut-off frequency becomes
lower
Notes
Pop noise is
concerned with
this capacitor.
To reduce ripple
C2
10 F
C3
0.1 F
C4
1 F
C5
3900 F
To determine the
time of turn on
diag
Power ON/OFF time and turn Power ON/OFF time and turn
ON diag cycle shorter
ON diag cycle longer
To provide
sufficient
oscillation margin
Reduces noise and provides sufficient oscillation margin
To reduce pop
noise
Pop noise becomes larger
Muting ON/OFF time is
shorter
Ripple filter
Power supply ripple filtering
Pop noise becomes smaller
Muting ON/OFF time is
longer
Note 3: In case of the recommended value not used.
5. Fast Mute Mode
This mode will mainly use a occur by pop sound on V CC cranking condition.
A Fast mute mode can be used to send a command via I2C bus.
Using the IB2 register and set one the bit D6, it is possible to get a fast I 2C mute command.
If a fast mute command is received, this IC will operate and make to discharge a capacitor of pin16.
Therefore the Pop sound will reduce of not using this mode on V CC cranking condition.
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TB2902H
6. Explanation for Self Diagnosis Via I2C
(1)
Bus map
Slave Address
Bit7
Bit6
1
Bit5
1
Bit4
Bit3
Bit2
Bit1
0
1
1
0
0
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Details
0
Write Mode
1
Read Mode
Hex
D8H
WRITE
Sub address
Bit7
Bit6
Bit0
Details
Hex
0
Page Mode (auto increment) OFF
1
Page Mode (auto increment) ON
0
0
0
0
0
0
1
Control Byte1
01H
0
0
0
0
0
1
0
Control Byte2
02H
Control byte1 (01H)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0
0
0
0
0
0
0
1
Clip Det 1% to 10% change
0
0
0
0
0
0
1
0
R-ch Muting off (play)
0
0
0
0
0
1
0
0
Fch Muting off (play)
0
0
0
0
1
0
0
0
R-ch Gain 26dB to 12dB
0
0
0
1
0
0
0
0
Fch Gain 26dB to 12dB
0
0
1
0
0
0
0
0
Offset Det Enable
0
1
0
0
0
0
0
0
Diag Cycle Enable
1
Function
Turn-on Select (normal/repeatedly)
Control byte2 (02H)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0
0
0
0
0
0
0
1
R-ch Iccq become Lower
0
0
0
0
0
0
1
0
Fch Iccq become Lower
0
0
0
0
0
1
0
0
Current Detection Enable
0
0
0
0
1
0
0
0
Line Drive Diag
0
0
0
1
0
0
0
0
Stand By OFF (play)
0
1
0
0
0
0
0
Clip Det Pin change to Offset Det
0
1
1
0
Function
Fast mute ON/OFF
0
0
0
0
0
0
Current Detection. Level change from 500 mA
(max) to 300 mA (max)
2
Note4:
Self mute circuit is included on chip in independent from I C bus stage.
Self mute operating voltage is VCC 7.8 V
Note5:
Auto Increment is available.
If it is chosen the control byte 1 by sub address, it is not necessary to send byte 2 in case of writing both
byte 1 and 2.
Ex) In case of sub address byte1 chosen:
Sub address byte 1
byte 1 writing
Sub address byte 2
byte 1 writing ---------------------------Sub address byte 1
byte 2 writing: available
byte 2 writing: available
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TB2902H
READ
Byte 1
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
At “Bit
1” Condition
0
0
0
0
0
0
0
1
Ch1 Short to GND
0
0
0
0
0
0
1
0
Ch1 Short to V CC
0
0
0
0
0
1
0
0
Ch1 Open load or Offset Detected
0
0
0
0
1
0
0
0
Ch1 Short load
0
0
0
1
0
0
0
0
Ch1 Diagnosis condition (bit
1: permanent, 0: turn-on)
Ch1 Current Detection (at IB2 D2
0
0
1
0
0
0
0
0
1
enable only)
(IB2
D7
0: bit
1:
0 mA, 0: 500 mA)
(IB2
D7
1: bit
1: 100 mA, 0: 300 mA)
0
1
0
0
0
0
0
0
Bit
1: Diag. Cycle terminated, 0: Not terminated
1
0
0
0
0
0
0
0
TSDMute ON (thermal warning)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0
0
0
0
0
0
0
1
Ch2 Short to GND
0
0
0
0
0
0
1
0
Ch2 Short to V CC
0
0
0
0
0
1
0
0
Ch2 Open load or Offset Detected
0
0
0
0
1
0
0
0
Ch2 Short load
0
0
0
1
0
0
0
0
Ch2 Diagnosis condition (bit
0
0
1
0
0
0
0
0
(IB2
D7
0: bit
1:
(IB2
D7
1: bit
1: 100 mA, 0: 300 mA)
Byte 2
At “Bit
1” Condition
1: permanent, 0: turn-on)
Ch2 Current Detection (at IB2 D2
0
1
enable only)
0 mA, 0: 500 mA)
0
1
0
0
0
0
0
Current sensor activated (D6
1)
1
0
0
0
0
0
0
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0
0
0
0
0
0
0
1
Ch3 Short to GND
0
0
0
0
0
0
1
0
Ch3 Short to V CC
0
0
0
0
0
1
0
0
Ch3 Open load or Offset Detected
0
0
0
0
1
0
0
0
Ch3 Short load
0
0
0
1
0
0
0
0
Ch3 Diagnosis condition (bit
Offset detection activated (D7
1)
Byte 3
At “Bit
1” Condition
1: permanent, 0: turn-on)
Ch3 Current Detection (at IB2 D2
0
0
1
0
0
0
0
0
1
1
1
enable only)
(IB2
D7
0: bit
1:
(IB2
D7
1: bit
1: 100 mA, 0: 300 mA)
0 mA, 0: 500 mA)
Diagnotic status ( IB1
D6 bit
1: diag enable)
Stand-by status ( IB2
D4 bit
1: play)
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TB2902H
Byte 4
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
At “Bit
1” Condition
0
0
0
0
0
0
0
1
Ch4 Short to GND
0
0
0
0
0
0
1
0
Ch4 2Short to V CC
0
0
0
0
0
1
0
0
Ch4 Open load or Offset Detected
0
0
0
0
1
0
0
0
Ch4 Short load
0
0
0
1
0
0
0
0
Ch4 Diagnosis condition (bit
1: permanent, 0: turn-on)
Ch4 Current Detection (at IB2 D2
0
0
1
0
0
0
0
0
1
enable only)
(IB2
D7
0: bit
1:
(IB2
D7
1: bit
1: 100 mA, 0: 300 mA)
0 mA, 0: 500 mA)
x
x
Note 6: Short protection can be operated in channel by channel.
(EX) If channel 1 is shorted, ch 1 is protected but other channels are available.
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TB2902H
(2)
Description for turn on diagnosis
This IC can diagnose whether the below condition occurs or not at turning ON:
-Short to GND
-Short to VCC
-Output to output short
-Speaker open
As firstly, the write data is sent to turning ON, and then this IC will become turning ON.
If this turning on diagnosis become activate at the time, the write data, that the diagnostic cycle
byte: IB1 D6 set at 1, is sent at the same time
The result of self diagnosis can be obtained by the read data sent after the turn on diagnostic data
permitted time, as below Figure:
WRITE DATA
READ DATA
READ DATA
Pin10
Ripple
Pin
Voltage
Permanent Diagnostic
Enable
TurnOn diagnostic DATA
permitted time
TurnOn diagnostic
Acquisition time (80 ms typ.)
Permanent diagnostic
DATA permitted time
FAULT
event
Figure 4
WRITE DATA
Set the
Diagnostic
l
READ DATA
Diagnosis Timing Chart
WRITE DATA
To become standby off
(turning or power ON)
READ DATA
Pin10
Ripple
Pin
Voltage
TurnOn diagnostic
Acquisition time
(80 ms typ.)
Figure 5
TurnOn diagnostic
Between On and Off time
(100 ms typ.)
Number of Times Turn ON Diagnosis Timing Chart
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TB2902H
As firstly, the write data is set at the on diagnostic cycle enable (IB1 D6 1), the turn on diagnosis
can be available for repeated by sent the read command repetition after above set up as shown as
Figure 5.
Therefore, it is useful to check number of times from Power ON to the output appearance.
This IC has built-in a two mode diagnostics on the Turn-on timing.
A) Normal mode (one shot ) of Turn-on diagnostics (data of IB1, D7
B) Repeatability mode of Turn-on diagnostics (data of IB1, D7 0)
1)
A) Normal mode (one shot diag.)
For example, if you want to get two valid readings, you have to send the command to read three
times.
True data are second data and third data.
This is trigger to occurred the
diag cycle.
Writing
(diag cycle enable 1)
(stand by OFF 0)
You have to read at interval of
150 ms or more for getting
valid reading.
Reading 1
Reading 2
The Data just received now is
detected before one diag cycle.
Reading 3
2
I C Command
Pin 10
About 100 m
DB1 D6
Diag Enable
Fault Event
Latch
For example
Short Load, Open Load etc.
If “Diag Enable” equal high,
“Latch” is reflected at the “Fault
Event”.
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Diag Cycle with Turn-ON
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TB2902H
B) Repeatable mode
Maximum interval:
You can decide as your liking in the acquisition time.
Minimum interval:
It is necessarily decided by the speed of
microcomputer.
Writing
(diag cycle enable 1)
(stand by OFF 0)
Reading 1
Reading 3
Reading 2
Reading 5
Reading 6
Reading 4
I2C Command
Pin 10
About 100 ms
DB1 D6
(acquisition time with only turn-ON)
About 80 ms
About 80 ms
Diag Enable
Fault Event
Latch
The turn ON diagnostic acquisition time is determined by the ripple filter capacitance C2 and
the equivalent internal resistance Rr as below expression.
Acquisition time 2 C2 Rr 4400 C2 (typ.)
Rr is fixed in internal circuit and it is not varied by the fluctuation of power supply VCC voltage.
The C2 determines the time from power ON (standby off) to the appearance of sound signal from
output and the characteristic for ripple rejection ratio, too. Therefore, take care of the value
decision.
If the turn ON diagnosis is not used, in other words sent the diagnostic cycle defeat command,
the waveform of ripple terminal voltage will change but the time from turning on to the output
signal appearance will not change as below Figure 6.
Turn ON Diagnosis enable
WRITE DATA
Turn ON Diagnosis Defeat
Pin10
Ripple
Pin
Voltage
Figure 6
Not Used the Turn on Diagnosis Timing Chart
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TB2902H
(3)
Description for permanent diagnosis
This IC can provide the permanent diagnosis whether the below condition occurs or not after
turning ON:
-Short to GND
-Short to VCC
-Output to output short
-Output offset detection
-Current detection for tweeter open
This permanent diagnosis is available not only the diagnostic cycle byte: IB1 D6 set at 1 but also set
at 0.
Additionally, the result of it can obtain by the just read command sent only, not necessary the write
data.
In this time, concerning with each short detection, the first read data after the fault removed is
shown “the Faulty”. Therefore, it is necessary to obtain the 3 times and more faulty result to prevent
the misjudgment as for example the speaker sometimes makes a large counter electro motive and
then this IC recognize it is fault event.
READ DATA
WRITE DATA
Pin10
Ripple
Pin
Voltage
READ DATA
Result Faulty
READ DATA
Result Faulty
READ DATA
Result Not Faulty
Permanent diagnostic DATA
permitted time
TurnOn diagnostic
DATA permitted time
TurnOn diagnostic
Acquisition time (80 ms typ.)
FAULT
event
Figure 7
FAULT
Removed
Permanent Diagnosis Timing Chart for Each Short Detection
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TB2902H
Regarding output offset detection, it always detects the output offset and the result is not latched
internal as shown as below Figure:
READ DATA
Result Faulty
WRITE DATA
READ DATA
Result Not Faulty
Correct Tvos
Pin10
Ripple
Pin
Voltage
READ DATA
Result Not Faulty
Correct Tvos
Permanent diagnostic DATA
permitted time
TurnOn diagnostic
DATA permitted time
TurnOn diagnostic
Acquisition time (80 ms typ.)
FAULT
event
Figure 8
FAULT
Removed
Software Output Offset Detection Timing Chart
However, this detection has to be performed with the time: Tvos between read and next read is set
at Tvos 1/the lowest signal frequency and more for instance Tvos 50 ms if the lowest output signal
frequency is 20 Hz, and to obtain the 2 times and more faulty result to prevent the misjudgment
Additionaly, the threshold level is designed at / 2 V.
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TB2902H
While, the terminal of pin 4 can be changed from clip detector to offset detector output by sending
the write command via I2C.
If the L.P.F output voltage has become a half of pull up voltage for a while, firstly the signal output
volume goes down. After that, it can be judged that the abnormal output offset occures if the L.P.F.
output voltage will not go back to a half of pull up voltage.
4
Volume control circuit
L.P.F.
Smoothing
circuit
Offset Detector
System shut down
Abnormal offset occured
Vth
Output
Waveform
Vth
Offset Detector
Output Pin4
Volume down
Judgement
Waveform
L.P.F Output
Detection delay time
Figure 9
waiting time for Prevention
misjudgement
Hardware Output Offset Detection
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TB2902H
When the current detector for Tweeter open check is used, it is neccesary to take care as below:
- Need to input the pulse or signal which is the higher out of audience frequency for example f 20
kHz
- The pulse or signal input timing has to be after mute off (play mode)
- At least, the read timing has to be after 1 cycle of input pulse or signal and more, the
recommadation cycles are 3 cycle and more if can.
- The level of input pulse or signal is more than the detection threshold level 300 mA or 500 mA.
For instance, if the tweeter impedance is 20 at f 20 kHz which is same as input signal frequency,
the output minimum voltage is: Vout 500 mA 20
10 V and more.
Play
Mute
Mute ON
WRITE DATA
Stand by off
Mute on
WRITE DATA
Mute off
Output
READ DATA
Invalidity
READ DATA
Invalidity
READ DATA
Invalidity
Current detector is not effective
Figure 10
READ DATA
Validity
READ DATA
Validity
Effective
Tweeter Open Detection Timing Chart
At last, if DB1 D7 1 then the temperature of IC chip is closer to the temperature of thermal
protector operation. This warning bit becomes high, before about 10 degrees of temperature at the
protector operation.
Note 7: Timing charts may be simplified for explanatory purpose.
Note 8: Please read all self-diagnosis twice or more and judge them.
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TB2902H
(4)
Multiple faults
The self diagnosis shows as below tables when there are multi fault connection for the audio
outputs.
At Turning ON:
S.GND (out )
S.GND (out )
S.GND (out )
S.VCC
Out to Out. S
Open L
S.GND
S.GND
S.Load
S.GND
S.GND
S.GND
S.Load
S.GND
S.GND
S.V CC
S.V CC
S.GND (out )
S.VCC
Out to Out .S
S.VCC
S.Load
S.Load
open
N/A
Open L
Open
At Permanent:
S.GND (out )
S.GND (out )
S.GND (out )
S.GND
S.GND
S.VCC
S.GND or S.VCC
Out to Out. S
S.GND
S.GND
(Note 10)
S.GND (out )
S.GND
S.GND or S.VCC
(Note 9)
S.GND
S.GND
(Note 10)
S.VCC
S.V CC
Out to Out .S
Open L
(Note 9)
S.VCC
S.V CC
S.Load
(Note 9)
S.GND
Open L
N/A
Normal
Note 9: If the DC offset detection mode is ON, the information which the DC offset is appeared is added.
Note10: The chance which they can read this exact information is only one time although in case of other
diagnosis, the more times sending read command, the higher the confidence of the result.
For example,
a) ch1+ is connected to GND
b) ch1- is connected to Vcc
c) They can read or get the "Short to GND" information when the uP send the Read command.
d) Next, however, they can not get the " Short to GND" or "Short to Vcc" information when the uP
send the Read command again.
(5)
Explanation of I2C bus commands
Below the “ADDRESS BYTE”, presently the address byte is fixed at 216 dec
1101100xbin.
D8hex
- ADDRESS SELECTION is D8hexa:
A7
Address bit
1
A6
Address bit
1
A5
Address bit
0
A4
Address bit
1
A3
Address bit
1
A2
Address bit
0
A1
Address bit
0
A0 (R/W)
Read/Write bit
X
X: 0
Write instruction to device; 1
Read instruction to device
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TB2902H
- If R/W
0, the Up Sends Two Instruction Bytes, IB1 and IB2:
IB1 Instruction Byte:
Bit
D7
Turn-on diag timing
Normal (D7
repeat (D7
D6
D5
D4
D3
D2
1)
0)
Diagnostic cycle enable (D6
1)
Diagnostic cycle defeat (D6
0)
Offset Detection enable (D5
1)
Offset Detection defeat (D5
0)
Front Channel
Gain
26dB (D4
0)
Gain
12dB (D4
1)
Rear Channel
Gain
26dB (D3
0)
Gain
12dB (D3
1)
Mute front channels (D2
0)
1)
Unmute front channels (D2
D1
Mute rear channels (D1
0)
1)
Unmute rear channels (D1
D0
CD 1% (D0
0)
CD 10% (D0
1)
IB2 Instruction Byte:
Bit
D7
Current Det 500 mA (max) (D7
0)
Current Det 300 mA (max) (D7
1)
D6
Fast mute on (D6
1) off (D6
D5
Pin4 Clip Detection (D5
0)
Pin4 Offset Detection (D5
D4
1)
Std-by on-PA not working (D4
Std-by off-PA working (D4
D3
0)
0)
1)
Amplifier mode diagnostic (D3
0)
Line driver mode diagnostic (D3
D2
Current Det. diag enabled (D2
Current Det. diag defeat (D2
D1
D0
1)
1)
0)
Front Channels
Work standard mode (D1
0)
Work Low Iccq mode (D1
1)
Rear Channels
Work standard mode (D1
0)
Work Low Iccq mode (D1
1)
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TB2902H
- If R/W
1, the Power Amplifier Sends Four Diagnostics Bytes, DB1, DB2, DB3 and DB4:
DB1 Diagnostic Byte:
Bit
D7
D6
Thermal warning active (D7
Diag not actived or not terminated (D6
Diag terminated (D6
D5
D4
Channel 1 current detection
Output peak current
250 mA (IB2
D7
0)
open load (D5
1)
Output peak current
100 mA (IB2
D7
1)
open load (D5
1)
Output peak current
500 mA (IB2
D7
0)
normal load (D5
0)
Output peak current
300 mA (IB2
D7
1)
normal load (D5
0)
Channel 1
0)
Permanent diagnostic (D4
1)
Channel 1
Normal load (D3
0)
Short load (D3
D2
1)
Channel 1
Turn-on diag: No open load (D2
Offset diag: No output offset (D2
D1
0)
Open load detected (D2
0)
Output offset detected (D2
1)
1)
Channel 1
No short to V CC (D1
Short to V CC (D1
D0
0)
1)
Turn-on diagnostic (D4
D3
1)
0)
1)
Channel 1
No short to Gnd (D0
Short to Gnd (D0
0)
1)
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TB2902H
DB2 Diagnostic Byte:
Bit
D7
Offset detection not activated (D7
Offset detection activated (D7
D6
D4
1)
Channel 2 current detection
250 mA (IB2
D7
0)
open load (D5
1)
Output peak current
100 mA (IB2
D7
1)
open load (D5
1)
Output peak current
500 mA (IB2
D7
0)
normal load (D5
0)
Output peak current
300 mA (IB2
D7
1)
normal load (D5
0)
Channel 2
0)
Permanent diagnostic (D4
1)
Channel 2
Normal load (D3
0)
1)
Short load (D3
D2
Channel 2
Turn-on diag: No open load (D2
Offset diag: No output offset (D2
D1
0)
Open load detected (D2
0)
Output offset detected (D2
1)
1)
Channel 2
No short to V CC (D1
Short to V CC (D1
D0
0)
Output peak current
Turn-on diagnostic (D4
D3
1)
Current sensor not activated (D6
Current sensor activated (D6
D5
0)
0)
1)
Channel 2
No short to Gnd (D0
Short to Gnd (D0
0)
1)
Note 11: DBx (D5) is effective only at the time of “Current detection enable”.
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TB2902H
DB3 Diagnostic Byte:
Bit
D7
Stand-by status ( IB2
D6
Diagnostic status ( IB1
D5
Channel 3 current detection
D4
D4)
D6)
Output peak current
250 mA (IB2
D7
0)
open load (D5
1)
Output peak current
100 mA (IB2
D7
1)
open load (D5
1)
Output peak current
500 mA (IB2
D7
0)
normal load (D5
0)
Output peak current
300 mA (IB2
D7
1)
normal load (D5
0)
Channel 3
Turn-on diagnostic (D4
0)
Permanent diagnostic (D4
D3
Normal load (D3
0)
Short load (D3
D2
1)
Channel 3
1)
Channel 3
Turn-on diag: No open load (D2
Offset diag: No output offset (D2
D1
Open load detected (D2
0)
Output offset detected (D2
1)
1)
Channel 3
No short to V CC (D1
Short to V CC (D1
D0
0)
0)
1)
Channel 3
No short to Gnd (D0
Short to Gnd (D0
0)
1)
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TB2902H
DB4 Diagnostic Byte:
Bit
D7
X
D6
X
D5
Channel 4 current detection
D4
Output peak current
250 mA (IB2
D7
0)
open load (D5
1)
Output peak current
100 mA (IB2
D7
1)
open load (D5
1)
Output peak current
500 mA (IB2
D7
0)
normal load (D5
0)
Output peak current
0 mA (IB2
D7
1)
normal load (D5
0)
Channel 4
Turn-on diagnostic (D4
0)
Permanent diagnostic (D4
D3
Normal load (D3
0)
Short load (D3
D2
1)
Channel 4
1)
Channel 4
Turn-on diag: No open load (D2
Offset diag.: No output offset (D2
D1
Open load detected (D2
0)
Output offset detected (D2
1)
1)
Channel 4
No short to V CC (D1
Short to V CC (D1
D0
0)
0)
1)
Channel 4
No short to Gnd (D0
Short to Gnd (D0
0)
1)
Note 12: DBx (D5) is effective only at the time of “Current detection enable”.
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TB2902H
Examples of Bytes Sequence
1 - Turn-On Diagnostic - Write Operation
Start
Address byte with D0
ACK
0
Sub-address D0
ACK
1
IB with D6
1
ACK
IB2
ACK
DB4
ACK
STOP
STOP
Note 13: Auto increment
2 - Turn-On Diagnostic - Read Operation
Start
Address byte with D0
1
ACK
DB1
ACK
DB2
ACK
DB3
ACK
3a - Turn-On of the Power Amplifier with 26dB Gain, Mute On, Diagnostic Defeat.
Start Address byte with D0 0
ACK
Sub-address D0
1
ACK
IB 1
ACK
X0X0000X
IB2
ACK
STOP
ACK
STOP
ACK
STOP
XXX1X0XX
Note 14: Auto increment
3b - Turn-Off of the Power Amplifier
Start Address byte with D0 0
ACK
Sub-address D0
1
ACK
IB 1
ACK
X0XXXXXX
IB2
XXX0XXXX
Note 15: Auto increment
4 - Offset Detection Procedure Enable
Start Address byte with D0 0
ACK
Sub-address D0
1
ACK
IB 1
ACK
XX1XX11X
IB2
XXX1X0XX
Note 16: Auto increment
5 - Offset detection procedure stop and reading operation (the results are valid only for the
offset detection bits (D2 of the bytes DB1, DB2, DB3, DB4)).
Start
Address byte with D0
1
ACK
DB1
ACK
DB2
ACK
DB3
ACK
DB4
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ACK
STOP
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TB2902H
(6)
I2C Bus control format outline
The BUS control format of TB2902H is based on the PHILIPS I 2C BUS control format.
Data Transmission Format
S
Slave Address
0 A
Sub Address
7 Bit
A
Data
8 Bit
MSB
A P
8 Bit
MSB
S: start conditions
P: stop conditions
A: Acknowledgement
MSB
Note 17: It is transmitting, without forgetting. P conditions.
(1)
Start conditions&stop conditions
(2)
SDA
Bit transmission
SDA
SCL
S
P
Start conditions
SCL
Stop conditions
SDA can not be changed
(3)
SDA can be changed.
Acknowledgement
SDA from a
Master
High impedance
High impedance
SCL from a
Master
1
8
A7
A6
A5
A4
A3
A2
A1
A0
R/
W
1
1
0
1
1
0
0
X
9
S
Start
Purchase of TOSHIBA I2C components conveys a license under the Philips I 2C Patent Rights to use these
components in an I2C system, provided that the system conforms to the I 2C Standard Specification as defined by
Philips.
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TB2902H
TB2902H I2C Bus Transmission Format
(1)
Write mode
In addition to usual transmission, it corresponds to continuation transmission and the auto
increment mode as a transmission format. After a transmission end, in case data transmission is
newly, it is necessary to open the term beyond 1 V.
1)
Continuation transmission
(An address to change is specified. At this time, MSB of a sub-address is set as 0.)
S
2)
Slave ADD
0 A
Sub ADD a
A
DATA 7 to 0
A
Sub ADD b
A
DATA 7 to 0
A
Sub ADD x
A
DATA 7 to 0
A
Auto increment
(Sub address are set to increment from N one by one. MSB of a sub-address is set as 1.)
S
Slave ADD
0 A
(sub ADD N)&80h
DATA 7 to 0
(sub ADD N
A
1)
DATA 7 to 0
(sub ADD N
(2)
A
DATA 7 to 0
DATA 7 to 0
(sub ADD N
A
A
2)
P
m)
Read mode
The slave address became the read mode by changing the 8 Bit of the slave address from 0 to 1.
The data output from TB2902H starts after the micro controller receives the ACK 1 bit which
follows a slave address.
Stop condition are shown in the under the map.
The micro controller shall send the stop condition P after it sent the reversed Acknowledge (high) in
case of the read mode finished.
The data transmission became not available condition if the micro controller intended to send the
stop condition P expect for this procedure because this IC occupies the data bus until the micro
controller send the start conditions again.
S
Slave ADD (R)
A DATA1 A DATA2 A DATA3 A DATA4 A P
.......send a DATA from Micro controller.
.......send a DATA from TB2902H.
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TB2902H
Maximum Ratings (Ta
Characteristics
25°C)
Symbol
Rating
Unit
VCC (surge)
50
V
DC supply voltage
VCC (DC)
25
V
Operation supply voltage
VCC (opr)
18
V
Output current (peak)
IO (peak)
9
A
125
W
Peak supply voltage (0.2 s)
Power dissipation
PD
(Note 18)
Operation temperature
Topr
40 to 85
°C
Storage temperature
Tstg
55 to 150
°C
Note 18: Package thermal resistance j-T
1°C/W (typ.) (Ta
25°C, with infinite heat sink)
The absolute maximum ratings of a semiconductor device are a set of specified parameter values, which must not
be exceeded during operation, even for an instant. If any of these rating would be exceeded during operation, the
device electrical characteristics may be irreparably altered and the reliability and lifetime of the device can no
longer be guaranteed. Moreover, these operations with exceeded ratings may cause break down, damage and/or
degradation to any other equipment. Applications using the device should be designed such that each maximum
rating will never be exceeded in any operating conditions. Before using, creating and/or producing designs, refer to
and comply with the precautions and conditions set forth in this documents.
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TB2902H
Electrical Characteristics
(unless otherwise specified, VCC
Characteristics
Quiescent current
Output power
Output power (RL
2
)
13.2 V, f
Symbol
Test
Circuit
Test Condition
Min
0
Typ.
Max
Unit
200
300
mA
VCC
14.4 V, max POWER
41
POUT MAX
(2)
VCC
13.7 V, max POWER
37
POUT (1)
VCC
14.4 V, THD
POUT (2)
THD
10%
23
POUT MAX
(3)
VCC
14.4 V, max POWER
70
POUT MAX
(4)
VCC
13.7 V, max POWER
64
POUT (3)
VCC
14.4 V, THD
POUT (4)
THD
10%
THD (1)
POUT
THD (2)
Vo
10%
10%
24
42
W
27
W
45
39
5W
0.015
0.1
0.01
0.1
%
2 Vrms, GV
12dB
GV (1)
VOUT
0.775 Vrms
25
26
27
GV (2)
VOUT 0.775 Vrms,
GV 12dB
11
12
13
1
0
1
GV
VOUT
Rg
0
, DIN45405
Vno (2)
Rg
0
,
BW
Vno (3)
0
90
20 Hz to 20 kHz
GV
12dB
Vrip
Rg
Vrms
100 Hz, Rg
30
620
40
Standby current
ISB
50
dB
65
dB
620
0.775 Vrms
VOFFSET
RIN
50
0.775 Vrms
VOUT
Input resistance
200
,
BW
fripple
dB
100
20 Hz to 20 kHz
R.R.
C.T.
dB
0.775 Vrms
Vno (1)
Rg
Output offset voltage
25°C)
POUT MAX
(1)
Output noise voltage
Cross talk
, Ta
VIN
Voltage gain
Ripple rejection ratio
4
ICCQ
Total harmonic distortion
Voltage gain ratio
1 kHz, RL
150
0
150
90
Stand-by condition by pin 16
VSM H
For operation, mute enable
VSM L
For mute, stand by OFF
30
k
60
7.0
VCC
0
5.0
Stand by&mute control voltage
mV
A
V
Mute: ON
Mute attenuation
ATT M
VOUT
OFF
CD (1)
Low (01H D
0)
CD (2)
High (01H D
1)
7.75 Vrms
Mute:
80
90
dB
1
2.5
5
10
15
Clip det THD level
%
Note 19: ISB specification will be decided to after final evaluation on tolerance spls.
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TB2902H
Diagnosis/Bus Specification
Characteristics
Test Condition
Min
Typ.
Max
Unit
1.2
V
Turn on diagnosis (power amplifier mode)
Short to GND det.
Under stand-by condition
VCC
1.2
Short to VCC det.
V
Shorted load
0.5
Open load
85
Normal load
1.5
45
Turn on diagnosis (line driver mode)
Short to GND det.
Under stand-by condition
1.2
VCC
1.2
Short to VCC det.
V
V
Shorted load
2
Open load
330
Normal load
6
180
Permanent diagnosis (power amplifier and line driver mode)
Short to GND det.
Power amplifier in mute or play
1.2
VCC
1.2
Short to VCC det.
V
V
Shorted load
Power amp mode only
0.5
Offset detection
Power amplifier in play (no signal)
/ 2
V
Current detector threshold 1
250
500
mA
Current detector threshold 2
100
300
mA
2
I C bus interface
Clock frequency
400
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kHz
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TB2902H
7
5
C1: 0.22 F
12
IN2
2
3
C4:
1 F
16
Standby&
Mute
17
15
IN3
18
C1: 0.22 F
19
13 Pre-GND
14
21
IN4
24
C1: 0.22 F
23
Out1 ( )
Out2 ( )
PW-GND2
Out2 ( )
Out3 ( )
PW-GND3
Out3 ( )
Out4 ( )
PW-GND4
Out4 ( )
22
SCL
25
SDA
2
SW
4 Clip Detection
PW-GND1
4
8
RL
IN1
4
11
RL
C1: 0.22 F
Out1 ( )
4
9
RL
20
VCC1
4
6
VCC2
RL
1
TAB
B
C3:
0.1 F
10
Ripple
C5:
3900 F
C2:
10 F
Test Circuit
IC
Bus
Diagnosis
LPF
Components in the test circuits are only used to obtain and confirm the device characteristics. These components
and circuits do not warrant to prevent the application equipment from malfunction or failure.
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TB2902H
Package Dimensions
Weight: 7.7 g (typ.)
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TB2902H
RESTRICTIONS ON PRODUCT USE
030619EBF
The information contained herein is subject to change without notice.
The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of
TOSHIBA or others.
TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
The products described in this document are subject to the foreign exchange and foreign trade laws.
TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced
and sold, under any law and regulations.
This product generates heat during normal operation. However, substandard performance or malfunction may
cause the product and its peripherals to reach abnormally high temperatures.
The product is often the final stage (the external output stage) of a 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.
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