TAS5615 [TI]

160 W STEREO/300W MONO PurePath™ HD Analog-Input Power Stage; 为160W立体声/单声道300W的PurePath ™HD模拟输入功率级
TAS5615
型号: TAS5615
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

160 W STEREO/300W MONO PurePath™ HD Analog-Input Power Stage
为160W立体声/单声道300W的PurePath ™HD模拟输入功率级

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PurePath Digital  
TAS5615  
www.ti.com ...................................................................................................................................................................................................... SLAS595JUNE 2009  
160 W STEREO/300W MONO PurePath™ HD Analog-Input Power Stage  
1
FEATURES  
DESCRIPTION  
2
Active Enabled Integrated Feedback Provides:  
(PurePath™ HD)  
The TAS5615 is a high-performance analog input  
CLass amplifier with integrated closed loop  
D
Signal Bandwidth up to 80kHz for High  
Frequency Content From High Definition  
Sources  
feedback technology (known as PurePath™ HD). It  
has the ability to drive up to 160 W(1) Stereo into 8  
speakers from a single 50V supply.  
Ultra Low 0.03% THD at 1W into 8  
PurePath™ HD technology enables traditional  
AB-Amplifier performance (<0.03% THD) levels while  
providing the power efficiency of traditional class D  
amplifiers.  
0.03% THD Across all Frequencies for  
Natural Sound at 1W  
80dB PSRR (BTL, No Input Signal)  
>100dB (A weighted) SNR  
Ultra Low 0.03% THD+N is flat across all frequencies,  
ensuring that the amplifier doesn’t add uneven  
distortion characteristics, and helps maintain a natural  
sound.  
Click and Pop Free Startup  
Minimal External Components Compared to  
Discrete Solutions  
Multiple Configurations Possible on the Same  
PCB:  
The efficiency of this Class-D amplifier is greater than  
90%. Undervoltage Protection, Overtemperature,  
clipping, Short Circuit and Overcurrent Protection are  
all integrated, safeguarding the device and speakers  
against fault conditions that could damage the  
system.  
Mono Parallel Bridge Tied Load (PBTL)  
2.1 Single Ended (SE) Stereo Pair and  
Bridge Tied Load (BTL) Subwoofer  
Quad Single Ended (SE) Outputs  
Total Output Power at 10%THD+N  
3 x OPA1632  
300W in Mono PBTL Configuration  
160W per Channel in Stereo BTL  
80W per Channel in Quad Single Ended  
??  
PurePath HDTM  
TAS5615  
??  
ANALOG  
AUDIO  
INPUT  
(2.1 Configuration)  
High Efficiency Power Stage (> 90%) With 120  
mOutput MOSFETs  
??  
Two Thermally Enhanced Package Options:  
15V  
+12V  
+25V to +50V  
PHD (64-pin QFP)  
PurePath HDTM  
Class G Power Supply  
Ref design  
DKD (44-pin PSOP3)  
Self-Protection Design (Including  
Undervoltage, Overtemperature, Clipping, and  
Short Circuit Protection) With Error Reporting  
110VAC->240VAC  
EMI Compliant When Used With  
Recommended System Design  
APPLICATIONS  
Mini Combo System  
AV Receivers  
DVD Receivers  
Active Speakers  
(1) Achievable output power levels are dependent on the thermal  
configuration of the target application. A high performance  
thermal interface material between the package exposed  
heatslug and the heat sink should be used to achieve high  
output power levels  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009, Texas Instruments Incorporated  
TAS5615  
SLAS595JUNE 2009 ...................................................................................................................................................................................................... www.ti.com  
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handling to prevent electrostatic damage to the MOS gates.  
DEVICE INFORMATION  
Terminal Assignment  
The TAS5615 is available in two thermally enhanced packages:  
64-Pin QFP (PHD) Power Package  
44-Pin PSOP3 package (DKD)  
The package type contains a heat slugs that is located on the top side of the device for convenient thermal  
coupling to the heat sink.  
PHD PACKAGE  
(TOP VIEW)  
DKD PACKAGE  
(TOP VIEW)  
PSU_REF  
VDD  
1
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
GVDD_AB  
BST_A  
2
OC_ADJ  
RESET  
3
PVDD_A  
PVDD_A  
OUT_A  
OUT_A  
GND_A  
GND_B  
OUT_B  
PVDD_B  
BST_B  
4
OC_ADJ  
RESET  
C_STARTUP  
INPUT_A  
INPUT_B  
VI_CM  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
1
2
3
4
5
6
7
8
GND_A  
GND_B  
GND_B  
OUT_B  
OUT_B  
PVDD_B  
PVDD_B  
BST_B  
BST_C  
PVDD_C  
PVDD_C  
OUT_C  
OUT_C  
GND_C  
GND_C  
GND_D  
C_STARTUP  
INPUT_A  
INPUT_B  
VI_CM  
5
6
7
8
GND  
9
GND  
AGND  
VREG  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
AGND  
VREG  
9
INPUT_C  
INPUT_D  
FREQ_ADJ  
OSC_IO+  
OSC_IO-  
SD  
10  
11  
12  
13  
14  
15  
16  
INPUT_C  
INPUT_D  
FREQ_ADJ  
OSC_IO+  
OSC_IO-  
SD  
BST_C  
PVDD_C  
OUT_C  
GND_C  
GND_D  
OUT_D  
OUT_D  
PVDD_D  
PVDD_D  
BST_D  
64-pins QFP package  
OTW1  
OTW  
READY  
M1  
M2  
M3  
GVDD_CD  
PIN ONE LOCATION PHD PACKAGE  
Electrical Pin 1  
Pin 1 Marker  
White Dot  
2
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Product Folder Link(s) :TAS5615  
TAS5615  
www.ti.com ...................................................................................................................................................................................................... SLAS595JUNE 2009  
MODE SELECTION PINS  
MODE PINS  
OUTPUT  
CONFIGURATION  
ANALOG  
INPUT  
DESCRIPTION  
M3  
0
M2  
0
M1  
0
Differential  
2 × BTL  
AD mode  
Reserved  
BD mode  
0
0
1
0
1
0
Differential  
2 × BTL  
Differential  
Single Ended  
0
1
1
0
1
0
1 × BTL +2 × SE  
4 × SE  
AD mode, BTL Differential  
AD mode  
Single Ended  
Differential  
INPUT_C(1)  
INPUT_D(1)  
1
0
1
1 × PBTL  
0
1
0
AD mode  
BD mode  
0
1
1
1
1
0
1
Reserved  
(1) INPUT_C and D are used to select between a subset of AD and BD mode operations in PBTL mode (1=VREG and 0=AGND).  
PACKAGE HEAT DISSIPATION RATINGS(1)  
PARAMETER  
TAS5615PHD  
3.63  
TAS5615DKD  
2.52  
R
θJC (°C/W) – 2 BTL or 4 SE channels  
RθJC (°C/W) – 1 BTL or 2 SE channel(s)  
5.95  
3.22  
RθJC (°C/W) – 1 SE channel  
9.9  
6.9  
(2)  
Pad Area  
49 mm2  
80 mm2  
(1) JC is junction-to-case, CH is case-to-heat sink  
(2) θH is an important consideration. Assume a 2-mil thickness of typical thermal grease between the pad area and the heat sink and both  
R
channels active. The RθCH with this condition is 1.22°C/W for the PHD package and and 1.02°C/W for the DKD package.  
ORDERING INFORMATION(1)  
TA  
PACKAGE  
TAS5615PHD(2)  
TAS5615DKD  
DESCRIPTION  
64 pin HTQFP  
44 pin PSOP3  
0°C–70°C  
0°C–70°C  
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
website at www.ti.com.  
(2) Product Preview  
Copyright © 2009, Texas Instruments Incorporated  
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TAS5615  
SLAS595JUNE 2009 ...................................................................................................................................................................................................... www.ti.com  
ABSOLUTE MAXIMUM RATINGS  
over operating free-air temperature range unless otherwise noted  
(1)  
TAS5615  
UNIT  
V
VDD to AGND  
–0.3 to 13.2  
–0.3 to 13.2  
–0.3 to 69.0  
–0.3 to 69.0  
–0.3 to 82.2  
–0.3 to 69.0  
–0.3 to 4.2  
–0.3 to 0.3  
–0.3 to 0.3  
–0.3 to 4.2  
GVDD to AGND  
V
PVDD_X to GND_X(2)  
OUT_X to GND_X(2)  
BST_X to GND_X(2)  
BST_X to GVDD_X(2)  
VREG to AGND  
V
V
V
V
V
GND_X to GND  
V
GND_X to AGND  
V
OC_ADJ, M1, M2, M3, OSC_IO+, OSC_IO–, FREQ_ADJ, VI_CM, C_STARTUP,  
PSU_REF to AGND  
V
INPUT_X  
–0.3 to 5  
–0.3 to 7.0  
9
V
V
RESET, SD, OTW1, OTW2, CLIP, READY to AGND  
Continuous sink current (SD, OTW1, OTW2, CLIP, READY)  
Operating junction temperature range, TJ  
Storage temperature, Tstg  
mA  
°C  
°C  
kV  
V
0 to 150  
–40 to 150  
±2  
Human-Body Model(3) (all pins)  
Charged-Device Model(3) (all pins)  
Electrostatic discharge  
±500  
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings  
only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating  
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
(2) These voltages represents the DC voltage + peak AC waveform measured at the terminal of the device in all conditions.  
(3) Failure to follow good anti-static ESD handling during manufacture and rework will contribute to device malfunction. Make sure the  
operators handling the device are adequately grounded through the use of ground straps or alternative ESD protection.  
RECOMMENDED OPERATING CONDITIONS  
over operating free-air temperature range (unless otherwise noted)  
MIN NOM  
MAX UNIT  
PVDD_x  
GVDD_x  
Half-bridge supply  
DC supply voltage  
DC supply voltage  
DC supply voltage  
25  
50  
52.5  
13.2  
13.2  
V
V
V
Supply for logic regulators and gate-drive  
circuitry  
10.8  
12  
VDD  
Digital regulator supply voltage  
10.8  
7
12  
8.0  
4.0  
4.0  
15  
RL(BTL)  
Output filter according to schematics in  
the application information section.  
RL(SE)  
Load impedance  
3.5  
3.5  
14  
RL(PBTL)  
LOUTPUT(BTL)  
LOUTPUT(SE)  
LOUTPUT(PBTL)  
Output filter inductance  
Minimum output inductance at IOC  
14  
15  
µH  
kHz  
k  
14  
15  
Nominal  
350 400  
310 340  
260 300  
450  
350  
PWM frame rate selectable for AM interference  
avoidance; 1% Resistor tolerance  
FPWM  
AM1  
AM2  
320  
Nominal; Master mode  
AM1; Master mode  
AM2; Master mode  
9.5  
19.8  
29.7  
10  
20  
30  
10.5  
20.2  
30.3  
RFREQ_ADJ  
PWM frame rate programming resistor  
Voltage on FREQ_ADJ pin for slave mode  
operation  
VFREQ_ADJ  
TJ  
Slave mode  
3.3  
Junction temperature  
0
150  
°C  
4
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TAS5615  
www.ti.com ...................................................................................................................................................................................................... SLAS595JUNE 2009  
PIN FUNCTIONS  
PIN  
FUNCTION(1)  
DESCRIPTION  
NAME  
AGND  
PHD NO.  
DKD NO.  
8
10  
43  
34  
33  
24  
P
P
P
P
P
O
O
I
Analog ground  
BST_A  
54  
41  
40  
27  
18  
3
HS bootstrap supply (BST), external 0.033 µF capacitor to OUT_A required.  
HS bootstrap supply (BST), external 0.033 µF capacitor to OUT_B required.  
HS bootstrap supply (BST), external 0.033 µF capacitor to OUT_C required.  
HS bootstrap supply (BST), external 0.033 µF capacitor to OUT_D required.  
Clipping warning; open drain; active low  
BST_B  
BST_C  
BST_D  
/CLIP  
C_STARTUP  
FREQ_ADJ  
5
Startup ramp requires a charging capacitor of 4.7 nF to AGND  
PWM frame rate programming pin requires resistor to AGND  
12  
14  
7, 23, 24, 57,  
58  
GND  
9
P
Ground  
GND_A  
GND_B  
GND_C  
GND_D  
GVDD_A  
GVDD_B  
GVDD_C  
GVDD_D  
GVDD_AB  
GVDD_CD  
INPUT_A  
INPUT_B  
INPUT_C  
INPUT_D  
M1  
48, 49  
46, 47  
34, 35  
32, 33  
55  
38  
37  
30  
29  
P
P
P
P
P
P
P
P
P
P
I
Power ground for half-bridge A  
Power ground for half-bridge B  
Power ground for half-bridge C  
Power ground for half-bridge D  
Gate drive voltage supply requires 0.1 µF capacitor to GND_A  
Gate drive voltage supply requires 0.1 µF capacitor to GND_B  
Gate drive voltage supply requires 0.1 µF capacitor to GND_C  
Gate drive voltage supply requires 0.1 uF capacitor to GND_D  
Gate drive voltage supply requires 0.22 µF capacitor to GND_A/GND_B  
Gate drive voltage supply requires 0.22 µF capacitor to GND_C/GND_D  
Input signal for half bridge A  
56  
25  
26  
-
44  
23  
6
4
5
7
I
Input signal for half bridge B  
10  
12  
13  
20  
21  
22  
I
Input signal for half bridge C  
11  
I
Input signal for half bridge D  
20  
I
Mode selection  
M2  
21  
I
Mode selection  
M3  
22  
I
Mode selection  
NC  
59-62  
1
O
No connect, pins may be grounded.  
OC_ADJ  
3
Analog over current programming pin requires resistor to ground:  
64 pin QFP package (PHD) = 22 kΩ  
44 pin PSOP3 Package (DKD) = 24 kΩ  
OSC_IO+  
OSC_IO–  
/OTW  
13  
14  
15  
16  
I/O  
I/O  
O
Oscillaotor master/slave output/input.  
Oscillaotor master/slave output/input.  
Overtemperature warning signal, open drain, active low.  
Overtemperature warning signal, open drain, active low.  
Overtemperature warning signal, open drain, active low.  
Output, half bridge A  
-
18  
/OTW1  
16  
O
/OTW2  
17  
O
OUT_A  
OUT_B  
OUT_C  
OUT_D  
PSU_REF  
52, 53  
44, 45  
36, 37  
28, 29  
63  
39, 40  
36  
O
O
Output, half bridge B  
31  
O
Output, half bridge C  
27, 28  
1
O
Output, half bridge D  
P
PSU Reference requires close decoupling of 330 pF to AGND  
Power supply input for half bridges A requires close decoupling of 2.2-µF  
capacitor to GND_A.  
PVDD_A  
PVDD_B  
PVDD_C  
50, 51  
42, 43  
38, 39  
41, 42  
35  
P
P
P
Power supply input for half bridges B requires close decoupling of 2.2-µF  
capacitor to GND_B.  
Power supply input for half bridges C requires close decoupling of 2.2-µF  
capacitor to GND_C.  
32  
(1) I = Input, O = Output, P = Power  
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TAS5615  
SLAS595JUNE 2009 ...................................................................................................................................................................................................... www.ti.com  
PIN FUNCTIONS (continued)  
PIN  
FUNCTION(1)  
DESCRIPTION  
NAME  
PVDD_D  
PHD NO.  
DKD NO.  
Power supply input for half bridges D requires close decoupling of 2.2-µF  
capacitor to GND_D.  
30, 31  
25, 26  
P
READY  
RESET  
SD  
19  
2
19  
4
O
I
Normal operation; open drain; active high  
Device reset Input; active low, requires 47kpull up resistor to VREG  
Shutdown signal, open drain, active low  
15  
17  
O
Power supply for internal voltage regulator requires a 10-µF capacitor with a  
0.1-µF capacitor to GND for decoupling.  
VDD  
64  
2
P
VI_CM  
VREG  
6
9
8
O
P
Analog comparator reference node requires close decoupling of 1 nF to GND  
11  
Internal regulator supply filter pin requires 0.1-µF capacitor to GND  
6
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TAS5615  
www.ti.com ...................................................................................................................................................................................................... SLAS595JUNE 2009  
TYPICAL SYSTEM BLOCK DIAGRAM  
Caps for  
External  
System  
Filtering  
&
Startup/Stop  
microcontroller  
or  
Analog circuitry  
(2)  
BST_A  
BST_B  
OSC_IO+  
OSC_IO-  
Oscillator  
Synchronization  
Bootstrap  
Caps  
2nd Order  
L-C Output  
Filter for  
each  
INPUT_A  
INPUT_B  
OUT_A  
ANALOG_IN_A  
ANALOG_IN_B  
Input DC  
Blocking  
Caps  
Input  
H-Bridge 1  
Output  
H-Bridge 1  
2
OUT_B  
2
H-Bridge  
Hardwire  
2-CHANNEL  
H-BRIDGE  
BTL MODE  
PWM Frame  
Rate Adjust  
&
FREQ_ADJ  
Master/Slave  
Mode  
2nd Order  
L-C Output  
Filter for  
each  
INPUT_C  
OUT_C  
ANALOG_IN_C  
ANALOG_IN_D  
Input DC  
Blocking  
Caps  
Input  
H-Bridge 2  
Output  
H-Bridge 2  
2
INPUT_D  
OUT_D  
2
H-Bridge  
M1  
BST_C  
BST_D  
Hardwire  
Mode  
Control  
M2  
M3  
Bootstrap  
Caps  
8
8
4
Hardwire  
PVDD  
GND  
PVDD  
Power Supply  
Decoupling  
GVDD, VDD,  
50V  
Over-  
Current  
Limit  
& VREG  
Power Supply  
Decoupling  
SYSTEM  
Power  
Supplies  
GND  
12V  
GVDD (12V)/VDD (12V)  
VAC  
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TAS5615  
SLAS595JUNE 2009 ...................................................................................................................................................................................................... www.ti.com  
FUNCTIONAL BLOCK DIAGRAM  
CLIP  
READY  
OTW1  
OTW2  
SD  
M1  
M2  
M3  
VDD  
POWER-UP  
RESET  
UVP  
VREG  
VREG  
AGND  
GND  
RESET  
TEMP  
SENSE  
GVDD_A  
GVDD_B  
GVDD_C  
GVDD_D  
STARTUP  
CONTROL  
C_STARTUP  
OVER-LOAD  
PROTECTION  
CURRENT  
SENSE  
CB3C  
OC_ADJ  
OSC_SYNC_IO+  
OSC_SYNC_IO-  
4
4
OSCILLATOR  
PVDD_X  
OUT_X  
GND_X  
PPSC  
4
FREQ_ADJ  
GVDD_A  
BST_A  
PWM  
ACTIVITY  
DETECTOR  
PVDD_X  
GND  
PSU_REF  
VI_CM  
PSU_FF  
PVDD_A  
OUT_A  
GND_A  
GVDD_B  
BST_B  
PWM  
RECEIVER  
TIMING  
CONTROL  
CONTROL  
GATE-DRIVE  
-
ANALOG  
LOOP FILTER  
INPUT_A  
INPUT_B  
+
PVDD_B  
OUT_B  
GND_B  
GVDD_C  
BST_C  
PWM  
RECEIVER  
TIMING  
CONTROL  
CONTROL  
CONTROL  
CONTROL  
GATE-DRIVE  
GATE-DRIVE  
GATE-DRIVE  
+
-
ANALOG  
LOOP FILTER  
INPUT_C  
INPUT_D  
PVDD_C  
OUT_C  
GND_C  
GVDD_D  
BST_D  
-
ANALOG  
LOOP FILTER  
+
PWM  
RECEIVER  
TIMING  
CONTROL  
+
-
ANALOG  
LOOP FILTER  
PVDD_D  
OUT_D  
GND_D  
PWM  
RECEIVER  
TIMING  
CONTROL  
8
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TAS5615  
www.ti.com ...................................................................................................................................................................................................... SLAS595JUNE 2009  
AUDIO CHARACTERISTICS (BTL)  
PCB and system configuraton are in accordance with recommended guidelines. Audio frequency = 1kHz, PVDD_X = 50 V,  
GVDD_X = 12 V, RL = 8, fS = 400 kHz, ROC = 22 k, TC = 75°C, Output Filter: LDEM = 15µH, CDEM = 680nF, mode = 010,  
unless otherwise noted.  
PARAMETER  
TEST CONDITIONS  
RL = 8 , 10% THD+N, clipped output signal  
RL = 8 , 1% THD+N, unclipped output signal  
1 W  
MIN  
TYP MAX UNIT  
160  
PO  
Power output per channel  
W
125  
THD+N Total harmonic distortion + noise  
0.05  
%
A-weighted, AES17 filter, Input Capacitor  
Grounded  
Vn  
Output integrated noise  
260  
µV  
|VOS  
|
Output offset voltage  
Signal-to-noise ratio(1)  
Inputs AC coupled to AGND  
40 150  
mV  
dB  
dB  
W
SNR  
DNR  
Pidle  
100  
100  
2.3  
Dynamic range  
Power dissipation due to Idle losses (IPVDD_X  
)
PO = 0, 4 channels switching(2)  
(1) SNR is calculated relative to 1% THD+N output level.  
(2) Actual system idle losses also are affected by core losses of output inductors.  
AUDIO SPECIFICATION (Single-Ended Output)  
PCB and system configuraton are in accordance with recommended guidelines. Audio frequency = 1kHz, PVDD_X = 50 V,  
GVDD_X = 12 V, RL = 4, fS = 400 kHz, ROC = 22 k, TC = 75°C, Output Filter: LDEM = 15µH, CDEM = 330nF, MODE = 100,  
unless otherwise noted.  
PARAMETER  
TEST CONDITIONS  
RL = 4 , 10% THD+N, clipped output signal  
RL = 4 , 1% THD+N, unclipped output signal  
1 W  
MIN  
TYP MAX UNIT  
75  
PO  
Power output per channel  
W
60  
THD+N Total harmonic distortion + noise  
0.05  
350  
93  
%
µV  
dB  
dB  
W
Vn  
Output integrated noise  
Signale to noise ratio(1)  
A-weighted  
SNR  
DNR  
Pidle  
A-weighted  
Dynamic range  
A-weighted  
PO = 0, 4 channels switching(2)  
93  
Power dissipation due to idle losses (IPVDD_X  
)
1.15  
(1) SNR is calculated relative to 1% THD+N output level.  
(2) Actual system idle losses are affected by core losses of output inductors.  
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AUDIO SPECIFICATION (PBTL)  
PCB and system configuraton are in accordance with recommended guidelines. Audio frequency = 1kHz, PVDD_X = 50 V,  
GVDD_X = 12 V, RL = 4, fS = 400 kHz, ROC = 22 k, TC = 75°C, Output Filter: LDEM = 15µH, CDEM = 680nF, MODE =  
101-BD, unless otherwise noted.  
PARAMETER  
TEST CONDITIONS  
RL = 4 , 10% THD+N, clipped output signal  
RL = 6 , 10% THD+N, clipped output signal  
RL = 8 , 10% THD+N, clipped output signal  
RL = 4 , 1% THD+N, unclipped output signal  
RL = 6 , 1% THD+N, unclipped output signal  
RL = 8 , 1% THD+N, unclipped output signal  
1 W  
MIN  
TYP MAX UNIT  
300  
210  
160  
PO  
Power output per channel  
W
240  
160  
125  
THD+N Total harmonic distortion + noise  
0.05  
260  
100  
100  
2.3  
%
µV  
dB  
dB  
W
Vn  
Output integrated noise  
Signale to noise ratio(1)  
Dynamic range  
A-weighted  
SNR  
DNR  
Pidle  
A-weighted  
A-weighted  
Power dissipation due to idle losses (IPVDD_X) PO = 0, 4 channels switching(2)  
(1) SNR is calculated relative to 1% THD+N output level.  
(2) Actual system idle losses are affected by core losses of output inductors.  
ELECTRICAL CHARACTERISTICS  
PVDD_X = 50.0 V, GVDD_X = 12 V, VDD = 12 V, TC (Case temperature) = 75°C, fS = 400 kHz, unless otherwise specified.  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP MAX UNIT  
INTERNAL VOLTAGE REGULATOR AND CURRENT CONSUMPTION  
Voltage regulator, only used as reference  
VREG  
VI_CM  
VDD = 12 V  
3
3.3  
3.6  
1.9  
V
V
node  
Analog comparator reference node  
1.5  
1.75  
22.5  
22.5  
8
Operating, 50% duty cycle  
Idle, reset mode  
IVDD  
VDD supply current  
mA  
mA  
50% duty cycle  
IGVDD_x  
Gate-supply current per half-bridge  
Half-bridge idle current  
Reset mode  
1.5  
7
50% duty cycle without output filter or load  
Reset mode, No switching  
mA  
IPVDD_x  
610  
µA  
ANALOG INPUTS  
RIN  
Input resistance  
READY = HIGH  
33  
5
kΩ  
V
VIN  
Maximum input voltage swing  
Maximum input current  
IIN  
342  
23  
mA  
dB  
G
Voltage Gain (VOUT/VIN)  
OSCILLATOR  
Nominal, Master Mode  
AM1, Master Mode  
AM2, Master Mode  
3.5  
3.1  
4
3.4  
3
4.5  
3.5  
3.2  
fOSC_IO+  
FPWM × 10  
MHz  
2.6  
VIH  
VIL  
High level input voltage  
Low level input voltage  
1.86  
V
V
1.45  
OUTPUT-STAGE MOSFETs  
Drain-to-source resistance, low side (LS)  
Drain-to-source resistance, high side (HS)  
120 200  
120 200  
mΩ  
mΩ  
TJ = 25°C, Includes metallization resistance,  
GVDD = 12 V  
RDS(on)  
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ELECTRICAL CHARACTERISTICS (continued)  
PVDD_X = 50.0 V, GVDD_X = 12 V, VDD = 12 V, TC (Case temperature) = 75°C, fS = 400 kHz, unless otherwise specified.  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP MAX UNIT  
I/O PROTECTION  
Undervoltage protection limit, GVDD_x  
and VDD  
Vuvp,G  
9.5  
V
(1)  
Vuvp,hyst  
0.6  
V
OTW1(1)  
OTW2(1)  
Overtemperature warning 1  
Overtemperature warning 2  
95  
100 105  
125 135  
°C  
°C  
115  
Temperature drop needed below OTW  
temperture for OTW to be inactive after  
OTW event.  
(1)  
OTWHYST  
25  
°C  
OTE(1)  
OTE-  
Overtemperature error  
145  
155 165  
30  
°C  
°C  
OTE-OTW differential  
(1)  
OTWdifferential  
A reset needs to occur for SD to be  
released following an OTE event  
(1)  
OTEHYST  
25  
°C  
OLPC  
IOC  
Overload protection counter  
fPWM = 400 kHz  
1.3  
ms  
Resistor – programmable, nominal  
continious current in 1load, 64 Pin QFP  
package (PHD), ROCP = 22 kΩ  
10  
10  
10  
A
A
A
Overcurrent limit protection  
Resistor – programmable, nominal  
continious current in 1load, 44 Pin PSOP3  
package (DKD), ROCP = 24 kΩ  
Resistor – programmable, continious current  
in 1load,  
IOC_LATCHED  
Overcurrent limit protection  
ROCP = 47 kΩ  
Time from switching transition to flip-state  
induced by overcurrent.  
IOCT  
IPD  
Overcurrent response time  
150  
3
ns  
Connected when RESET is active to provide  
bootstrap charge. Not used in SE mode.  
Output pulldown current of each half  
mA  
STATIC DIGITAL SPECIFICATIONS  
VIH  
High level input voltage  
Low level input voltage  
Input leakage current  
1.9  
20  
V
V
INPUT_X, M1, M2, M3, RESET  
VIL  
1.45  
100  
Leakage  
µA  
OTW/SHUTDOWN (SD)  
Internal pullup resistance, OTW1 to  
RINT_PU  
26  
32  
kΩ  
VREG, OTW2 to VREG, SD to VREG  
Internal pullup resistor  
External pullup of 4.7 kto 5 V  
IO = 4 mA  
3
3.3  
3.6  
5
VOH  
High level output voltage  
V
4.5  
VOL  
Low level output voltage  
200 500  
mV  
Device fanout OTW1, OTW2, SD, CLIP,  
READY  
FANOUT  
No external pullup  
30  
devices  
(1) Specified by design.  
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TYPICAL CHARACTERISTICS, BTL CONFIGURATION  
TOTAL HARMONIC+NOISE  
OUTPUT POWER  
vs  
SUPPLY VOLTAGE  
vs  
OUTPUT POWER  
10  
5
180  
170  
160  
150  
140  
130  
120  
110  
100  
90  
T
= 75°C  
T
= 75°C  
C
THD+N at 10%  
C
2
1
0.5  
8W  
0.2  
0.1  
80  
70  
60  
8W  
0.05  
50  
40  
0.02  
30  
20  
0.01  
10  
0
0.005  
25 27 29 31 33 35 37 39 41 43 45 47 49  
PVDD - Supply Voltage - V  
20m  
100m 200m  
P
1
2
- Output Power - W  
10 20  
100 200  
O
Figure 1.  
Figure 2.  
UNCLIPPED OUTPUT POWER  
SYSTEM EFFICIENCY  
vs  
OUTPUT POWER  
vs  
SUPPLY VOLTAGE  
150  
140  
130  
120  
110  
100  
90  
100  
90  
80  
70  
60  
50  
40  
30  
20  
T
= 75°C  
C
8W  
8W  
80  
70  
60  
50  
40  
30  
T
= 75°C  
20  
C
THD+N at 10%  
10  
0
10  
0
25 27 29 31 33 35 37 39 41 43 45 47 49  
PVDD - Supply Voltage - V  
0
40  
80 120 160 200 240 280 320  
2 Channels Output Power - W  
Figure 3.  
Figure 4.  
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TYPICAL CHARACTERISTICS, BTL CONFIGURATION (continued)  
SYSTEM POWER LOSS  
vs  
OUTPUT POWER  
vs  
CASE TEMPERATURE  
OUTPUT POWER  
34  
32  
30  
28  
26  
24  
22  
20  
18  
16  
14  
12  
10  
8
200  
180  
THD+N at 10%  
T
= 75°C  
C
THD+N at 10%  
160  
140  
8W  
120  
100  
80  
8W  
60  
40  
6
4
20  
0
2
0
10 20 30 40 50 60 70 80 90 100 110 120  
- Case Temperature - °C  
0
40  
80 120 160 200 240 280 320  
2 Channels Output Power - W  
T
C
Figure 5.  
Figure 6.  
NOISE AMPLITUDE  
vs  
FREQUENCY  
0
T
= 75°C,  
C
V
= 32.7 V,  
REF  
Sample Rate = 48 kHz,  
FFT Size = 16384  
-20  
-40  
-60  
-80  
-100  
-120  
-140  
-160  
0
2
4
6
8 10 12 14 16 18 20 22  
f - Frequency - kHz  
Figure 7.  
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TYPICAL CHARACTERISTICS, SE CONFIGURATION  
TOTAL HARMONIC DISTORTION + NOISE  
OUTPUT POWER  
vs  
SUPPLY VOLTAGE  
vs  
OUTPUT POWER  
10  
5
90  
85  
T
= 75°C  
C
THD+N at 10%  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
25  
20  
15  
10  
5
2
1
4W  
0.5  
6W  
0.2  
0.1  
4W  
6W  
8W  
8W  
0.05  
0.02  
0.01  
0.005  
0
25 27 29 31 33 35 37 39 41 43 45 47 49  
PVDD - Supply Voltage - V  
20m  
100m 200m  
P
O
1
2
- Output Power - W  
10 20  
100  
Figure 8.  
Figure 9.  
OUTPUT POWER  
vs  
CASE TEMPERATURE  
100  
THD+N at 10%  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
25  
20  
15  
10  
4W  
6W  
8W  
5
0
10 20 30 40 50 60 70 80 90 100 110 120  
- Case Temperature - °C  
T
C
Figure 10.  
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TYPICAL CHARACTERISTICS, PBTL CONFIGURATION  
TOTAL HARMONIC DISTORTION + NOISE  
OUTPUT POWER  
vs  
SUPPLY VOLTAGE  
vs  
OUTPUT POWER  
10  
5
340  
320  
300  
280  
260  
240  
220  
200  
180  
160  
140  
120  
100  
80  
T
= 75°C  
T
= 75°C  
C
C
THD+N at 10%  
4W  
6W  
2
1
4W  
8W  
0.5  
6W  
8W  
0.2  
0.1  
0.05  
0.02  
60  
40  
0.01  
20  
0
0.005  
25 27 29 31 33 35 37 39 41 43 45 47 49  
PVDD - Supply Voltage - V  
20m 100m 200m  
1
2
10 20  
- Output Power - W  
100 200 500  
P
O
Figure 11.  
Figure 12.  
OUTPUT POWER  
vs  
CASE TEMPERATURE  
400  
THD+N at 10%  
360  
320  
280  
240  
4W  
6W  
200  
160  
120  
80  
8W  
40  
0
10 20 30 40 50 60 70 80 90 100 110 120  
- Case Temperature - °C  
T
C
Figure 13.  
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APPLICATION INFORMATION  
PCB MATERIAL RECOMMENDATION  
FR-4 Glass Epoxy material with 2 oz. (70 µm) is recommended for use with the TAS5615. The use of this  
material can provide for higher power output, improved thermal performance, and better EMI margin (due to  
lower PCB trace inductance.  
PVDD CAPACITOR RECOMMENDATION  
The large capacitors used in conjunction with each full-bridge, are referred to as the PVDD Capacitors. These  
capacitors should be selected for proper voltage margin and adequate capacitance to support the power  
requirements. In practice, with a well designed system power supply, 1000 µF, 63 V will support more  
applications. The PVDD capacitors should be low ESR type because they are used in a circuit associated with  
high-speed switching.  
DECOUPLING CAPACITOR RECOMMENDATIONS  
In order to design an amplifier that has robust performance, passes regulatory requirements, and exhibits good  
audio performance, good quality decoupling capacitors should be used. In practice, X7R should be used in this  
application.  
The voltage of the decoupling capacitors should be selected in accordance with good design practices.  
Temperature, ripple current, and voltage overshoot must be considered. This fact is particularly true in the  
selection of the 2.2µF that is placed on the power supply to each half-bridge. It must withstand the voltage  
overshoot of the PWM switching, the heat generated by the amplifier during high power output, and the ripple  
current created by high power output. A minimum voltage rating of 63 V is required for use with a 50.0 V power  
supply.  
SYSTEM DESIGN RECOMMENDATIONS  
The following schematics and PCB layouts illustrate "best practices" in the use of the TAS5615.  
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G N D _ A  
P V D D _ A  
P V D D _ A  
O U T _ A  
G N D _ D  
3 2  
4 9  
5 0  
5 1  
5 2  
5 3  
5 4  
5 5  
5 6  
5 7  
5 8  
5 9  
6 0  
6 1  
6 2  
6 3  
6 4  
P V D D _ D  
3 1  
P V D D _ D  
3 0  
O U T _ D  
2 9  
O U T _ A  
O U T _ D  
2 8  
B S T _ A  
B S T _ D  
2 7  
G V D D _ A  
G V D D _ B  
G V D D _ D  
2 6  
G V D D _ C  
2 5  
G N D  
G N D  
N C  
G N D  
2 4  
G N D  
2 3  
M 3  
2 2  
N C  
N C  
N C  
M 2  
2 1  
M 1  
2 0  
R E A D Y  
1 9  
P S U _ R E F  
/ C L I P  
1 8  
V D D  
/ O T W 2  
1 7  
Figure 14. Typical Differential Input BTL Application With BD Modulation Filters  
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G N D _ A  
P V D D _ A  
P V D D _ A  
O U T _ A  
G N D _ D  
3 2  
4 9  
5 0  
5 1  
5 2  
5 3  
5 4  
5 5  
5 6  
5 7  
5 8  
5 9  
6 0  
6 1  
6 2  
6 3  
6 4  
P V D D _ D  
3 1  
P V D D _ D  
3 0  
O U T _ D  
2 9  
O U T _ A  
O U T _ D  
2 8  
B S T _ A  
B S T _ D  
2 7  
G V D D _ A  
G V D D _ B  
G V D D _ D  
2 6  
G V D D _ C  
2 5  
G N D  
G N D  
N C  
G N D  
2 4  
G N D  
2 3  
M 3  
2 2  
N C  
N C  
N C  
M 2  
2 1  
M 1  
2 0  
R E A D Y  
1 9  
P S U _ R E F  
/ C L I P  
1 8  
V D D  
/ O T W 2  
1 7  
Figure 15. Typical Differential (2N) PBTL Application With BD Modulation Filters  
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3.3R  
VDD (+12V)  
3.3R  
GVDD (+12V)  
100nF  
100nF  
10uF  
100nF  
33nF  
15uH  
A
GND GND  
GND GND  
GND  
PVDD  
VREG  
2.2uF  
GND  
47k  
100R  
/RESET  
4.7uF  
GND  
100pF  
GND  
22.0k  
10nF  
100R  
100R  
100R  
100R  
1
2
3
4
5
6
48  
47  
46  
45  
OC_ADJ  
/RESET  
C_STARTUP  
INPUT_A  
INPUT_B  
VI_CM  
GND_A  
GND_B  
GND_B  
OUT_B  
OUT_B  
PVDD_B  
PVDD_B  
BST_B  
IN_A  
IN_B  
IN_C  
IN_D  
GND  
GND  
10uF  
10uF  
10uF  
10uF  
100pF  
GND  
15uH  
B
GND  
GND  
GND  
44  
2.2uF  
33nF  
43  
42  
41  
40  
100pF  
4.7uF  
7
PVDD  
GND  
GND  
GND  
100nF  
VREG  
8
9
3.3R  
AGND  
GND  
TAS5615PHD  
47uF  
63V  
2.2uF  
VREG  
BST_C  
39  
38  
37  
36  
10  
11  
12  
13  
14  
15  
10nF  
INPUT_C  
INPUT_D  
FREQ_ADJ  
OSC_IO+  
OSC_IO-  
/SD  
PVDD_C  
PVDD_C  
OUT_C  
OUT_C  
GND_C  
GND_C  
GND_D  
100pF  
10k  
33nF  
2.2uF  
15uH  
GND  
GND  
GND  
C
GND  
35  
34  
33  
100pF  
GND  
16  
/OTW1  
GND  
OSC_IO+  
OSC_IO-  
2.2uF  
PVDD  
/SD  
/OTW1  
/OTW2  
/CLIP  
GND  
VREG  
15uH  
D
33nF  
GND  
3.3R  
GVDD (+12V)  
READY  
3.3R  
100nF  
100nF  
10nF  
100V  
10nF  
100V  
GND GND  
GND  
GND  
3.3R  
3.3R  
OUT_A_M  
OUT_B_M  
A
B
PVDD  
R_COMP  
100nF  
100nF  
R_COMP  
R_COMP  
-
+
-
+
100V  
100V  
50  
49  
48  
V
V
V
140 kOhm  
160 kOhm  
180 kOhm  
187 kOhm  
330nF  
250V  
330nF  
250V  
10k  
10k  
PVDD  
PVDD  
10k  
10k  
1%  
470uF  
100nF  
100V  
GND  
470uF  
100nF  
100V  
GND  
50V  
1%  
50V  
<48  
V
OUT_A_P  
OUT_B_P  
10k  
1%  
10k  
1%  
470uF  
50V  
470uF  
50V  
3.3R  
3.3R  
GND  
GND  
100V  
100V  
10nF  
10nF  
GND  
GND  
10nF  
100V  
10nF  
100V  
GND  
GND  
3.3R  
3.3R  
OUT_C_M  
OUT_D_M  
C
D
100nF  
100V  
100nF  
100V  
R_COMP  
R_COMP  
-
+
-
+
330nF  
250V  
330nF  
250V  
10k  
10k  
PVDD  
PVDD  
10k  
1%  
10k  
1%  
470uF  
50V  
100nF  
100V  
GND  
470uF  
50V  
100nF  
100V  
GND  
OUT_C_P  
OUT_D_P  
10k  
1%  
10k  
1%  
470uF  
50V  
470uF  
50V  
3.3R  
3.3R  
GND  
GND  
100V  
10nF  
100V  
10nF  
GND  
GND  
Figure 16. Typical SE Application  
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G N D _ A  
P V D D _ A  
P V D D _ A  
O U T _ A  
G N D _ D  
3 2  
4 9  
5 0  
5 1  
5 2  
5 3  
5 4  
5 5  
5 6  
5 7  
5 8  
5 9  
6 0  
6 1  
6 2  
6 3  
6 4  
P V D D _ D  
3 1  
P V D D _ D  
3 0  
O U T _ D  
2 9  
O U T _ A  
O U T _ D  
2 8  
B S T _ A  
B S T _ D  
2 7  
G V D D _ A  
G V D D _ B  
G V D D _ D  
2 6  
G V D D _ C  
2 5  
G N D  
G N D  
N C  
G N D  
2 4  
G N D  
2 3  
M 3  
2 2  
N C  
N C  
N C  
M 2  
2 1  
M 1  
2 0  
R E A D Y  
1 9  
P S U _ R E F  
/ C L I P  
1 8  
V D D  
/ O T W 2  
1 7  
Figure 17. Typical 2.1 System Differential Input BTL and Unbalanced Input SE Application  
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THEORY OF OPERATION  
POWER SUPPLIES  
To facilitate system design, the TAS5615 needs only a 12V supply in addition to the (typical) 50V power-stage  
supply. An internal voltage regulator provides suitable voltage levels for the digital and low-voltage analog  
circuitry. Additionally, all circuitry requiring a floating voltage supply, e.g., the high-side gate drive, is  
accommodated by built-in bootstrap circuitry requiring only an external capacitor for each half-bridge.  
In order to provide outstanding electrical and acoustical characteristics, the PWM signal path including gate drive  
and output stage is designed as identical, independent half-bridges. For this reason, each half-bridge has  
separate gate drive supply (GVDD_X), bootstrap pins (BST_X), and power-stage supply pins (PVDD_X).  
Furthermore, an additional pin (VDD) is provided as supply for all common circuits. Although supplied from the  
same 12V source, it is highly recommended to separate GVDD_A, GVDD_B, GVDD_C, GVDD_D, and VDD on  
the printed-circuit board (PCB) by RC filters (see application diagram for details). These RC filters provide the  
recommended high-frequency isolation. Special attention should be paid to placing all decoupling capacitors as  
close to their associated pins as possible. In general, inductance between the power supply pins and decoupling  
capacitors must be avoided. (See reference board documentation for additional information.)  
For a properly functioning bootstrap circuit, a small ceramic capacitor must be connected from each bootstrap pin  
(BST_X) to the power-stage output pin (OUT_X). When the power-stage output is low, the bootstrap capacitor is  
charged through an internal diode connected between the gate-drive power-supply pin (GVDD_X) and the  
bootstrap pin. When the power-stage output is high, the bootstrap capacitor potential is shifted above the output  
potential and thus provides a suitable voltage supply for the high-side gate driver. In an application with PWM  
switching frequencies in the range from 300kHz to 400kHz, it is recommended to use 33nF ceramic capacitors,  
size 0603 or 0805, for the bootstrap supply. These 33nF capacitors ensure sufficient energy storage, even during  
minimal PWM duty cycles, to keep the high-side power stage FET (LDMOS) fully turned on during the remaining  
part of the PWM cycle.  
Special attention should be paid to the power-stage power supply; this includes component selection, PCB  
placement, and routing. As indicated, each half-bridge has independent power-stage supply pins (PVDD_X). For  
optimal electrical performance, EMI compliance, and system reliability, it is important that each PVDD_X pin is  
decoupled with a 2.2µF ceramic capacitor placed as close as possible to each supply pin. It is recommended to  
follow the PCB layout of the TAS5615 reference design. For additional information on recommended power  
supply and required components, see the application diagrams in this data sheet.  
The 12V supply should be from a low-noise, low-output-impedance voltage regulator. Likewise, the 50V  
power-stage supply is assumed to have low output impedance and low noise. The power-supply sequence is not  
critical as facilitated by the internal power-on-reset circuit. Moreover, the TAS5615 is fully protected against  
erroneous power-stage turn on due to parasitic gate charging. Thus, voltage-supply ramp rates (dV/dt) are  
non-critical within the specified range (see the Recommended Operating Conditions table of this data sheet).  
SYSTEM POWER-UP/POWER-DOWN SEQUENCE  
Powering Up  
The TAS5615 does not require a power-up sequence. The outputs of the H-bridges remain in a high-impedance  
state until the gate-drive supply voltage (GVDD_X) and VDD voltage are above the undervoltage protection  
(UVP) voltage threshold (see the Electrical Characteristics table of this data sheet). Although not specifically  
required, it is recommended to hold RESET in a low state while powering up the device. This allows an internal  
circuit to charge the external bootstrap capacitors by enabling a weak pulldown of the half-bridge output.  
Powering Down  
The TAS5615 does not require a power-down sequence. The device remains fully operational as long as the  
gate-drive supply (GVDD_X) voltage and VDD voltage are above the undervoltage protection (UVP) voltage  
threshold (see the Electrical Characteristics table of this data sheet). Although not specifically required, it is a  
good practice to hold RESET low during power down, thus preventing audible artifacts including pops or clicks.  
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ERROR REPORTING  
The SD, OTW, OTW1 and OTW2 pins are active-low, open-drain outputs. Their function is for protection-mode  
signaling to a PWM controller or other system-control device.  
Any fault resulting in device shutdown is signaled by the SD pin going low. Likewise, OTW and OTW2 goes low  
when the device junction temperature exceeds 125°C and OTW1 goes low when the junction temperature  
exceeds 100°C (see the following table).  
SD  
OTW1 OTW2, OTW DESCRIPTION  
0
0
0
Overtemperature (OTE) or overload (OLP) or undervoltage (UVP) Junction temperature higher than 125°C  
(overtemperature warning)  
0
0
1
Overload (OLP) or undervoltage (UVP). Junction temperature higher than 100°C (overtemperature  
warning)  
0
1
1
1
1
0
0
1
1
0
1
1
Overload (OLP) or undervoltage (UVP). Junction temperature lower than 100°C  
Junction temperature higher than 125°C (overtemperature warning)  
Junction temperature higher than 100°C (overtemperature warning)  
Junction temperature lower than 100°C and no OLP or UVP faults (normal operation)  
Note that asserting either RESET low forces the SD signal high, independent of faults being present. TI  
recommends monitoring the OTW signal using the system microcontroller and responding to an overtemperature  
warning signal by, e.g., turning down the volume to prevent further heating of the device resulting in device  
shutdown (OTE).  
To reduce external component count, an internal pullup resistor to 3.3V is provided on both SD and OTW  
outputs. Level compliance for 5V logic can be obtained by adding external pullup resistors to 5 V (see the  
Electrical Characteristics section of this data sheet for further specifications).  
DEVICE PROTECTION SYSTEM  
The TAS5615 contains advanced protection circuitry carefully designed to facilitate system integration and ease  
of use, as well as to safeguard the device from permanent failure due to a wide range of fault conditions such as  
short circuits, overload, overtemperature, and undervoltage. The TAS5615 responds to a fault by immediately  
setting the power stage in a high-impedance (Hi-Z) state and asserting the SD pin low. In situations other than  
overload and overtemperature error (OTE), the device automatically recovers when the fault condition has been  
removed, i.e., the supply voltage has increased.  
The device will function on errors, as shown in the following table  
BTL  
MODE  
PBTL  
MODE  
SE  
MODE  
LOCAL  
TURNS OFF  
LOCAL  
TURNS OFF  
LOCAL  
TURNS OFF  
ERROR IN  
ERROR IN  
ERROR IN  
A
B
C
D
A+B  
C+D  
A
B
C
D
A+B+C+D  
A
B
C
D
A+B  
C+D  
Bootstrap UVP does not shutdown according to the table, it shuts down the respective halfbridge.  
PIN-TO-PIN SHORT CIRCUIT PROTECTION (PPSC)  
The PPSC detection system protects the device from permanent damage in the case that a power output pin  
(OUT_X) is shorted to GND_X or PVDD_X. For comparison, the OC protection system detects an overcurrent  
after the demodulation filter where PPSC detects shorts directly at the pin before the filter. PPSC detection is  
performed at startup i.e. when VDD is supplied, consequently a short to either GND_X or PVDD_X after system  
startup will not activate the PPSC detection system. When PPSC detection is activated by a short on the output,  
all half bridges are kept in a Hi-Z state until the short is removed, the device then continues the startup sequence  
and starts switching. The detection is controlled globally by a two step sequence. The first step ensures that  
there are no shorts from OUT_X to GND_X, the second step tests that there are no shorts from OUT_X to  
PVDD_X. The total duration of this process is roughly proportional to the capacitance of the output LC filter. The  
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typical duration is < 15ms/µF. While the PPSC detection is in progress, SD is kept low, and the device will not  
react to changes applied to the RESET pins. If no shorts are present the PPSC detection passes, and SD is  
released. A device reset will not start a new PPSC detection. PPSC detection is enabled in BTL and PBTL output  
configurations, the detection is not performed in SE mode. To make sure not to trip the PPSC detection system it  
is recommended not to insert resistive load to GND_X or PVDD_X.  
OVERTEMPERATURE PROTECTION  
The two different package options has individual over temperature protection schemes.  
PHD Package  
The TAS5615 PHD package option has a three-level temperature-protection system that asserts an active-low  
warning signal (OTW1) when the device junction temperature exceeds 100°C (typical), (OTW2) when the device  
junction temperature exceeds 125°C (typical) and, if the device junction temperature exceeds 155°C (typical), the  
device is put into thermal shutdown, resulting in all half-bridge outputs being set in the high-impedance (Hi-Z)  
state and SD being asserted low. OTE is latched in this case. To clear the OTE latch, RESET must be asserted.  
Thereafter, the device resumes normal operation.  
DKD Package  
The TAS5615 DKD package option has a two-level temperature-protection system that asserts an active-low  
warning signal (OTW) when the device junction temperature exceeds 125°C (typical) and, if the device junction  
temperature exceeds 155°C (typical), the device is put into thermal shutdown, resulting in all half-bridge outputs  
being set in the high-impedance (Hi-Z) state and SD being asserted low. OTE is latched in this case. To clear the  
OTE latch, RESET must be asserted. Thereafter, the device resumes normal operation.  
UNDERVOLTAGE PROTECTION (UVP) AND POWER-ON RESET (POR)  
The UVP and POR circuits of the TAS5615 fully protect the device in any power-up/down and brownout situation.  
While powering up, the POR circuit resets the overload circuit (OLP) and ensures that all circuits are fully  
operational when the GVDD_X and VDD supply voltages reach stated in the Electrical Characteristics table.  
Although GVDD_X and VDD are independently monitored, a supply voltage drop below the UVP threshold on  
any VDD or GVDD_X pin results in all half-bridge outputs immediately being set in the high-impedance (Hi-Z)  
state and SD being asserted low. The device automatically resumes operation when all supply voltages have  
increased above the UVP threshold.  
DEVICE RESET  
When RESET is asserted low, all power-stage FETs in the four half-bridges are forced into a high-impedance  
(Hi-Z) state.  
In BTL modes, to accommodate bootstrap charging prior to switching start, asserting the reset input low enables  
weak pulldown of the half-bridge outputs. In the SE mode, the output is forced into a high impedance state when  
asserting the reset input low.  
Asserting reset input low removes any fault information to be signalled on the SD output, i.e., SD is forced high.  
A rising-edge transition on reset input allows the device to resume operation after an overload fault. To ensure  
thermal reliability, the rising edge of reset must occur no sooner than 4 ms after the falling edge of SD.  
SYSTEM DESIGN CONSIDERATION  
A rising-edge transition on reset input allows the device to execute the startup sequence and starts switching.  
Apply only audio when the state of READY is high that will start and stop the amplifier without having audible  
artifacts that is heard in the output transducers. If an overcurrent protection event is introduced the READY signal  
goes low hence filtering is needed if the signal is intended for audio muting in non microcontroller systems.  
The CLIP signal is indicating that the output is approaching clipping. The signal can be used to either an audio  
volume decrease or intelligent power supply controlling a low and a high rail.  
The device is inverting the audio signal from input to output.  
The VREG pin is not recommended to be used as a voltage source for external circuitry.  
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OSCILLATOR  
The oscillator frequency can be trimmed by external control of the FREQ_ADJ pin.  
To reduce interference problems while using radio receiver tuned within the AM band, the switching frequency  
can be changed from nominal to lower values. These values should be chosen such that the nominal and the  
lower value switching frequencies together results in the fewest cases of interference throughout the AM band.  
can be selected by the value of the FREQ_ADJ resistor connected to AGND in master mode.  
For slave mode operation, turn of the oscillator by pulling the FREQ_ADJ pin to VREG. This configures the  
OSC_I/O pins as inputs and needs to be slaved from an external clock.  
PRINTED CIRCUIT BOARD RECOMMENDATION  
Use an unbroken ground plane to have good low impedance and inductance return path to the power supply for  
power and audio signals. PCB layout, audio performance and EMI are linked closely together. The circuit  
contains high fast switching currents; therefore, care must be taken to prevent damaging voltage spikes. Routing  
the audio input should be kept short and together with the accompanied audio source ground. A local ground  
area underneath the device is important to keep solid to minimize ground bounce.  
Netlist for this printed circuit board is generated from the schematic in Figure 14.  
Note T1: PVDD decoupling bulk capacitors C60-C64 should be as close as possible to the PVDD and GND_X pins,  
the heat sink sets the distance. Wide traces should be routed on the top layer with direct connection to the pins and  
without going through vias. No vias or traces should be blocking the current path.  
Note T2: Close decoupling of PVDD with low impedance X7R ceramic capacitors is placed under the heat sink and  
close to the pins.  
Note T3: Heat sink needs to have a good connection to PCB ground.  
Note T4: Output filter capacitors must be linear in the applied voltage range preferable metal film types.  
Figure 18. Printed Circuit Board - Top Layer  
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Note B1: It is important to have a direct low impedance return path for high current back to the power supply. Keep  
impedance low from top to bottom side of PCB through a lot of ground vias.  
Note B2: Bootstrap low impedance X7R ceramic capacitors placed on bottom side providing a short low inductance  
current loop.  
Note B3: Return currents from bulk capacitors and output filter capacitors.  
Figure 19. Printed Circuit Board - Bottom Layer  
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PACKAGE OPTION ADDENDUM  
www.ti.com  
30-Jun-2009  
PACKAGING INFORMATION  
Orderable Device  
TAS5615DKD  
Status (1)  
ACTIVE  
ACTIVE  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
Drawing  
HSSOP  
DKD  
44  
29 Green (RoHS & CU NIPDAU Level-4-260C-72 HR  
no Sb/Br)  
TAS5615DKDR  
HSSOP  
DKD  
44  
500 Green (RoHS & CU NIPDAU Level-4-260C-72 HR  
no Sb/Br)  
TAS5615PHD  
PREVIEW  
PREVIEW  
HTQFP  
HTQFP  
PHD  
PHD  
64  
64  
90  
TBD  
TBD  
Call TI  
Call TI  
Call TI  
Call TI  
TAS5615PHDR  
1000  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in  
a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2)  
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check  
http://www.ti.com/productcontent for the latest availability information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements  
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered  
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and  
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS  
compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame  
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)  
(3)  
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder  
temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is  
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the  
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take  
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on  
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited  
information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI  
to Customer on an annual basis.  
Addendum-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
1-Jul-2009  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0 (mm)  
B0 (mm)  
K0 (mm)  
P1  
W
Pin1  
Diameter Width  
(mm) W1 (mm)  
(mm) (mm) Quadrant  
TAS5615DKDR  
HSSOP  
DKD  
44  
500  
330.0  
24.4  
14.7  
16.4  
4.0  
20.0  
24.0  
Q1  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
1-Jul-2009  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
HSSOP DKD 44  
SPQ  
Length (mm) Width (mm) Height (mm)  
346.0 346.0 41.0  
TAS5615DKDR  
500  
Pack Materials-Page 2  
IMPORTANT NOTICE  
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TAS5622

TAS5622-TAS5624DDVEVM

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