ST TDA7564B User Manual
4 x 50W multifunction quad power amplifier
Features
■ Multipower BCD technology
■ MOSFET output power stage
■ DMOS power output
■ New high efficiency (class SB)
■ High output power capability 4x28 W/4 Ω @
14.4 V, 1 kHz, 10 % THD, 4x50 W max, power
■ Max. output power 4x72 W/2 Ω
■ Full I
■ Full fault protection
■ DC offset detection
■ Four independent short circuit protection
■ Clipping detector (2 %/10 %)
■ Linear thermal shutdown with multiple thermal
■ ESD protection
Description
The TDA7564B is a new BCD technology quad
bridge type of car radio amplifier in Flexiwatt25 /
Table 1. Device summary
2
C bus driving:
– Standby
– Independent front/rear soft play/mute
– Selectable gain (for low noise line output
function)
– High efficiency enable/disable
2
–I
C bus digital diagnostics (including AC
and DC load detection)
warning
TDA7564B
with built-in diagnostics feature
Flexiwatt25
(Vertical)
PowerSO36
(slug up)
PowerSO36 package specially intended for car
radio applications.
Thanks to the DMOS output stage the TDA7564B
has a very low distortion allowing a clear powerful
sound. Among the features, its superior efficiency
performance coming from the internal exclusive
structure, makes it the most suitable device to
simplify the thermal management in high power
sets.
The dissipated output power under average
listening condition is in fact reduced up to 50%
when compared to the level provided by
conventional class AB solutions. This device is
equipped with a full diagnostics array that
communicates the status of each speaker through
2
the I
C bus.
Flexiwatt25
(Horizontal)
Order code Package Packing
TDA7564B Flexiwatt25 (vertical) Tube
TDA7564BH Flexiwatt25 (horizontal) Tube
TDA7564BPD PowerSO36 Tube
TDA7564BPDTR PowerSO36 Tape and reel
December 2009 Doc ID 12734 Rev 3 1/34
www.st.com
1
Contents TDA7564B
Contents
1 Block diagrams and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Diagnostics functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Permanent diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Output DC offset detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4 AC diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 Multiple faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1 Faults availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 Thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.1 I2C programming/reading sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7 Fast muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2
8I
C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.1 Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.2 Start and stop conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.3 Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9 Software specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10 Examples of bytes sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2/34 Doc ID 12734 Rev 3
TDA7564B Contents
11 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Doc ID 12734 Rev 3 3/34
List of tables TDA7564B
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. Double fault table for turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 6. IB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 7. IB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 8. DB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 9. DB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 10. DB3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 11. DB4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 12. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4/34 Doc ID 12734 Rev 3
TDA7564B List of figures
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Flexiwatt25 pins connection diagram (top of view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. PowerSO36 (slug-up) pins connection diagram (top of view) . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5. Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6. Output power vs. supply voltage (4 W). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7. Output power vs. supply voltage (2 W). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 8. Distortion vs. output power (4 W, STD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 9. Distortion vs. output power (4 Ω, HI-EFF). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 10. Distortion vs. output power (2 Ω, STD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 11. Distortion vs. frequency (4 W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 12. Distortion vs. frequency (2 W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 13. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 14. Supply voltage rejection vs. freq. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 15. Power dissipation and efficiency vs. output power (4 W, STD, SINE) . . . . . . . . . . . . . . . . 13
Figure 16. Power dissipation and efficiency vs. output power (4 Ω, Hi-eff, SINE) . . . . . . . . . . . . . . . . 13
Figure 17. Power dissipation vs. average output power (audio program simulation, 4 W) . . . . . . . . . 13
Figure 18. Power dissipation vs. average output power (audio program simulation, 2 W) . . . . . . . . . 13
Figure 19. Turn - on diagnostic: working principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 20. SVR and output behavior (case 1: without turn-on diagnostic). . . . . . . . . . . . . . . . . . . . . . 14
Figure 21. SVR and output pin behavior (case 2: with turn-on diagnostic) . . . . . . . . . . . . . . . . . . . . . 15
Figure 22. Short circuit detection thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 23. Load detection thresholds - high gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 24. Load detection threshold - low gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 25. Restart timing without diagnostic enable (permanent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 26. Restart timing with diagnostic enable (permanent). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 27. Current detection high: load impedance |Z| vs. output peak voltage . . . . . . . . . . . . . . . . . 18
Figure 28. Current detection low: load impedance |Z| vs. output peak voltage . . . . . . . . . . . . . . . . . . 18
Figure 29. Thermal foldback diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 30. Data validity on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 31. Timing diagram on the I2C bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 32. Acknowledge on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 33. Flexiwatt25 (horizontal) mechanical data and package dimensions. . . . . . . . . . . . . . . . . . 30
Figure 34. Flexiwatt25 (vertical) mechanical data and package dimensions. . . . . . . . . . . . . . . . . . . . 31
Figure 35. PowerSO36 (slug up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 32
Doc ID 12734 Rev 3 5/34
Block diagrams and application circuit TDA7564B
1 Block diagrams and application circuit
Figure 1. Block diagram
VCC2VCC1
REFERENCE
CLIP
DETECTOR
CD_OUT
THERMAL
PROTECTION
& DUMP
DATACLK
I2CBUS
MUTE1 MUTE2
IN RF
IN RR
IN LF
IN LR
Figure 2. Application circuit
C8
0.1μFC73300μF
DATA
I2C BUS
CLK
C1 0.22μF
IN RF
C2 0.22μF
IN RR
C3 0.22μF
IN LF
C4 0.22μF
IN LR
S-GND
12/26dB
12/26dB
12/26dB
12/26dB
AC_GND RF RR LF
S_GNDTABSVR
Vcc1
620
25
22
15
14
11
Vcc2
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
+
17
18
19
+
21
24
23
+
9
8
7
+
5
PW_GND
2
47K
3
-
TAB
1
V
D00AU1212
12
13
16 10 4
C5
1μF
C6
10μF
CD OUT
OUT RF+
OUT RF-
OUT RR+
OUT RR-
OUT LF+
OUT LF-
OUT LR+
OUT LR-
LR
D00AU1211
OUT RF
OUT RR
OUT LF
OUT LR
6/34 Doc ID 12734 Rev 3
TDA7564B Pins description
2 Pins description
Figure 3. Flexiwatt25 pins connection diagram (top of view)
25
24
23
22
20
19
18
17
16
15
Vertical Horizontal
14
13
12
11
10
9
8
7
6
4
3
2
1
DATA
PW_GND RR
OUT RR-
CK
OUT RR+
V
CC2
OUT RF-
PW_GND RF
OUT RF+
AC GND
IN RF
IN RR
S GND
IN LR
IN LF
SVR
OUT LF+
PW_GND LF
OUT LF-
V
CC1
OUT LR+
CD-OUT
OUT LR-
PW_GND LR
TAB
D99AU1037
25
24
23
22
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
4
3
2
1
Figure 4. PowerSO36 (slug-up) pins connection diagram (top of view)
DATA
PW_GND RR
OUT RR-
CK
OUT RR+
V
CC2
OUT RF-
PW_GND RF
OUT RF+
AC GND
IN RF
IN RR
S GND
IN LR
IN LF
SVR
OUT LF+
PW_GND LF
OUT LF-
V
CC1
OUT LR+
CD-OUT
OUT LR-
PW_GND LR
TAB
AU1037_H
VCC
OUT3-
N.C.
N.C.
PWGND
OUT3+
ACGND
IN3
IN4
SGND 1027
IN2
IN1
SVR 1324
OUT1+
PWGND
N.C.
OUT1-
VCC
36
35
34
33
32
31
30
29
28
1
2
3
4
5
6
7
8
9
TAB
CK
N.C.
OUT4+
N.C.
PWGND
VCC
DATA
OUT4-
OUT2-
26
25
11
12
N.C.
VCC
PWGND
23
22
21
20
19
AC00182
14
15
16
17
18
N.C.
OUT2+
N.C.
N.C.
CD
Doc ID 12734 Rev 3 7/34
Electrical specifications TDA7564B
3 Electrical specifications
3.1 Absolute maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
V
V
T
V
V
peak
V
DATA
I
I
P
stg
Operating supply voltage 18 V
op
DC supply voltage 28 V
S
Peak supply voltage (for t = 50 ms) 50 V
CK pin voltage 6 V
CK
Data pin voltage 6 V
Output peak current (not repetitive t = 100 ms) 8 A
O
Output peak current (repetitive f > 10 Hz) 6 A
O
Power dissipation T
tot
= 70 °C 85 W
case
, TjStorage and junction temperature -55 to 150 °C
3.2 Thermal data
Table 3. Thermal data
Symbol Parameter PowerSO Flexiwatt Unit
R
th j-case
Thermal resistance junction-to-case Max. 1 1 °C/W
3.3 Electrical characteristics
Refer to the test circuit,
VS = 14.4 V; RL = 4 Ω; f = 1 kHz;
GV = 30 dB; T
= 25 °C; unless
amb
otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
Power amplifier
V
S
I
d
P
O
8/34 Doc ID 12734 Rev 3
Supply voltage range - 8 - 18 V
Total quiescent drain current - - 170 300 mA
Output power
Max. power (VS = 15.2 V, square
wave input (2 Vrms))
THD = 10 %
THD = 1 %
-50-W
25
20
28
22
-W
TDA7564B Electrical specifications
Table 4. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
R
P
O
Output power
= 2 Ω; EIAJ (VS = 13.7V)
L
= 2 Ω; THD 10%
R
L
= 2 Ω; THD 1%
R
L
RL = 2 Ω; max. power
55
40
32
60
68
50
40
75
-W
THD Total harmonic distortion
Cross talk f = 1 kHz to 10 kHz, Rg = 600 Ω 50 60 - dB
C
T
R
G
ΔG
G
ΔG
E
E
Input impedance - 60 100 130 kΩ
IN
Voltage gain 1 - 25 26 27 dB
V1
Voltage gain match 1 - -1 - 1 dB
V1
Voltage gain 2 - 11 12 13 dB
V2
Voltage gain match 2 - -1 - 1 dB
V2
Output noise voltage 1 Rg = 600 Ω 20 Hz to 22 kHz - 35 100 µV
IN1
Output noise voltage 2
IN2
SVR Supply Voltage Rejection
= 1 W to 10 W; STD mode
P
O
HE MODE; PO = 1.5 W
HE MODE; P
G
= 12 dB; STD mode
V
= 0.1 to 5 V
V
O
= 8 W
O
RMS
Rg = 600 Ω; GV = 12 dB
20 Hz to 22 kHz
f = 100 Hz to 10 kHz; V
= 600 Ω
R
g
= 1 Vpk;
r
0.02
-
0.015
0.15
- 0.02 0.05 %
-1230µV
50 60 - dB
0.1
0.1
0.5
BW Power bandwidth - 100 - - kHz
A
V
V
CMRR Input CMRR V
T
T
CD
CD
Standby attenuation - 90 110 - dB
SB
I
Standby current V
SB
Mute attenuation - 80 100 - dB
A
M
Offset voltage Mute and play -100 0 100 mV
OS
Min. supply mute threshold - 6.5 7 8 V
AM
Turn ON Delay D2/D1 (IB1) 0 to 1 - 20 40 ms
ON
Turn OFF Delay D2/D1 (IB1) 1 to 0 - 20 40 ms
OFF
Clip det high leakage current CD off - 0 5 μA
LK
Clip det sat. voltage CD on; ICD = 1 mA - 150 300 mV
SAT
= 0 - 25 50 µA
st-by
= 1 Vpk-pk; Rg = 0 Ω -55-dB
CM
D0 (IB1) = 1 5 10 15 %
CD
Clip det THD level
THD
D0 (IB1) = 0 1 2 3 %
%
Doc ID 12734 Rev 3 9/34
Electrical specifications TDA7564B
Table 4. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
Turn on diagnostics 1 (Power amplifier mode)
Short to GND det. (below this
Pgnd
Pvs
Pnop
Lsc Shorted load det. - - 0.5 Ω
Lop Open load det. 85 - - Ω
Lnop Normal load det. 1.5 - 45 Ω
Turn on diagnostics 2 (Line driver mode)
Pgnd
limit, the output is considered in
short circuit to GND)
Short to Vs det. (above this limit,
the output is considered in short
circuit to V
)
S
Normal operation thresholds.
(Within these limits, the output is
considered without faults).
Short to GND det. (below this
limit, the output is considered in
short circuit to GND)
--1.2V
Vs -1.2 - - V
Power amplifier in standby
1.8 - Vs -1.8 V
Power amplifier in standby - - 1.2 V
Short to Vs det. (above this limit,
Pvs
the output is considered in short
- Vs -1.2 - - V
circuit to VS)
Normal operation thresholds.
Pnop
(Within these limits, the output is
- 1.8 - Vs -1.8 V
considered without faults).
Lsc Shorted load det. - - - 2 Ω
Lop Open load det. - 330 - - Ω
Lnop Normal load det. - 7 - 180 Ω
Permanent diagnostics 2 (Power amplifier mode or line driver mode)
Short to GND det. (below this
Pgnd
limit, the output is considered in
--1.2V
short circuit to GND)
Power amplifier in mute or play,
one or more short circuits
protection activated
Vs -1.2 - - V
Pvs
Short to Vs det. (above this limit,
the output is considered in short
circuit to VS)
Normal operation thresholds.
Pnop
(within these limits, the output is
1.8 - Vs -1.8 V
considered without faults).
Pow. amp. mode - - 0.5 Ω
L
I
Shorted load det.
SC
Offset detection
V
O
Normal load current detection VO < (VS - 5)pk IB2 (D7) = 0 500 - - mA
NLH
Line driver mode - - 2 Ω
Power amplifier in play,
AC Input signals = 0
±1.5 ±2 ±2.5 V
10/34 Doc ID 12734 Rev 3
TDA7564B Electrical specifications
(V)
(V)
(V)
)
Table 4. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
I
I
I
2
I
C bus interface
S
V
Normal load current detection VO < (VS - 5)pk IB2 (D7) = 1 250 - mA
NLL
Open load current detection VO < (VS - 5)pk IB2 (D7) = 0 - - 250 mA
OLH
Open load current detection VO < (VS - 5)pk IB2 (D7) =1 - - 125 mA
OLL
Clock frequency - - - 400 kHz
CL
V
Input low voltage - - - 1.5 V
IL
Input high voltage - 2.3 - - V
IH
3.4 Electrical characteristics curves
Figure 5. Quiescent current vs. supply
voltage
Id (mA)
250
230
210
190
170
150
130
110
90
70
Vin = 0
NO LOADS
8 1012141618
Vs
Figure 6. Output power vs. supply voltage
Po (W)
70
65
60
55
50
45
40
35
30
25
20
15
10
5
8 9 10 11 12 13 14 15 16 17 18
(4 Ω)
RL = 4 Ohm
f = 1 KHz
Po-max
THD = 10 %
THD = 1 %
Vs
Figure 7. Output power vs. supply voltage
(2 Ω)
Po (W)
100
90
80
70
60
50
40
30
20
10
RL = 2 Ohm
f = 1 KHz
8 9 10 11 12 13 14 15 16
Vs
Po-max
THD = 10 %
THD = 1 %
Doc ID 12734 Rev 3 11/34
Figure 8. Distortion vs. output power (4 Ω,
STD)
THD (%)
10
STANDARD MODE
Vs = 14.4 V
RL = 4 Ohm
1
f = 10 KHz
0.1
f = 1 KHz
0.01
0.1 1 10
Po (W
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