TPA005D12DCA [TI]
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER; 2 -W立体声D类音频功率放大器
| 型号： | TPA005D12DCA |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 2-W STEREO CLASS-D AUDIO POWER AMPLIFIER |
| 文件： | 总8页 (文件大小：121K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TPA005D12
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS241B – AUGUST 1999 – REVISED MARCH 2000
DCA PACKAGE
(TOP VIEW)
NOT RECOMMENDED FOR NEW DESIGNS
Choose TPA2000D2 For Upgrade
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
SHUTDOWN
MUTE
COSC
AGND
AGND
RINN
Extremely Efficient Class-D Stereo
Operation
2
3
AGND
LINN
LINP
LCOMP
AGND
Drives L and R Channels
2-W BTL Output Into 4 Ω
5-W Peak Music Power
4
5
RINP
6
RCOMP
FAULT0
FAULT1
7
Fully Specified for 5-V Operation
Low Quiescent Current
8
V
LPV
DD
DD
9
RPV
DD
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
LOUTP
LOUTP
PGND
PGND
LOUTN
LOUTN
ROUTP
ROUTP
PGND
PGND
ROUTN
ROUTN
Shutdown Control . . . 0.2 µA
Thermally-Enhanced PowerPAD Surface-
Mount Packaging
Thermal, Over-Current, and Under-Voltage
Protection
LPV
RPV
NC
DD
DD
description
NC
NC
NC
The TPA005D12 is a monolithic power IC stereo
audio amplifier that operates in extremely efficient
Class-Doperation, usingthehighswitchingspeed
of power DMOS transistors to replicate the analog
input signal through high-frequency switching of
the output stage. This allows the TPA005D12 to
beconfiguredasabridge-tiedload(BTL)amplifier
capable of delivering up to 2 W of continuous
average power into a 4-Ω load at 0.5% THD+N
from a 5-V power supply in the high-fidelity audio
NC
NC
AGND
V2P5
PV
PV
DD
DD
VCP
CP3
CP2
PGND
CP4
CP1
NC – No internal connection
frequency range (20 Hz to 20 kHz). A BTL configuration eliminates the need for external coupling capacitors
on the output. A chip-level shutdown control is provided to limit total quiescent current to 0.2 µA, making the
device ideal for battery-powered applications.
A full range of protection circuitry is included to increase device reliability: thermal, over-current, and
under-voltage shutdown, with two status feedback terminals for use when any error condition is encountered.
The high switching frequency of the TPA005D12 allows the output filter to consist of three small capacitors and
two small inductors per channel. The high switching frequency also allows for good THD+N performance.
The TPA005D12 is offered in the thermally enhanced 48-pin PowerPAD TSSOP surface-mount package
(designator DCA).
AVAILABLE OPTIONS
PACKAGED DEVICES
†
T
A
TSSOP
(DCA)
–40°C to 125°C
TPA005D12DCA
†
The DCA package is available in left-ended tape and reel. To order
a taped and reeled part, add the suffix R to the part number (e.g.,
TPA005D12DCAR).
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.
PowerPAD is a trademark of Texas Instruments Incorporated.
Copyright 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
LPV
DD
VCP PV
DD
LPV
DD
LPV
DD
THERMAL
DETECT
GATE
DRIVE
1.5 V
SHUTDOWN
MUTE
CONTROL and
STARTUP
LOGIC
10 kΩ
10 kΩ
+
_
LINP
LINN
LPV
DD
VCP PV
DD
LCOMP
+
_
PV
DD
GATE
DRIVE
V
DD
V
DD
PV
CC
GENERATOR
OVER-I
V2P5
DETECT
RPV
DD
VCP PV
RAMP
GENERATOR
DD
COSC
VCP-UVLO
DETECT
RCOMP
GATE
DRIVE
_
+
1.5 V
PV
DD
10 kΩ
10 kΩ
+
_
RINP
RINN
RPV
DD
TRIPLER
CHARGE PUMP
VCP PV
DD
GATE
DRIVE
RPV
DD
RPV
DD
AGND
PGND
NOTE A: LPV , RPV , V , and PV
DD DD DD DD
are externally connected. AGND and PGND are externally connected.
TPA005D12
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS241B – AUGUST 1999 – REVISED MARCH 2000
Terminal Functions
TERMINAL
NAME
DESCRIPTION
NO.
3, 7, 20,
46, 47
AGND
Analog ground for headphone and Class-D analog sections
COSC
CP1
48
25
Capacitor I/O for ramp generator. Adjust the capacitor size to change the switching frequency.
First diode node for charge pump
CP2
24
First inverter switching node for charge pump
CP3
23
Second diode node for charge pump
CP4
26
Second inverter switching node for charge pump
FAULT0
FAULT1
LCOMP
LINN
42
Logic level fault0 output signal. Lower order bit of the two fault signals with open drain output.
Logic level fault1 output signal. Higher order bit of the two fault signals with open drain output.
Compensation capacitor terminal for left-channel Class-D amplifier
Class-D left-channel negative input
41
6
4
LINP
5
Class-D left-channel positive input
LOUTN
LOUTP
14, 15
10, 11
9, 16
Class-D amplifier left-channel negative output of H-bridge
Class-D amplifier left-channel positive output of H-bridge
Class-D amplifier left-channel power supply
LPV
DD
Active-low logic-level mute input signal. When MUTE is held low, the selected amplifier is muted. When MUTE
is held high, the device operates normally. When the Class-D amplifier is muted, the low-side output transistors
are turned on, shorting the load to ground.
2
MUTE
17, 18, 19,
30, 31, 32
NC
No connection
PGND
PGND
PGND
12, 13
27
Power ground for left-channel H-bridge only
Power ground for charge pump only
36, 37
21, 28
43
Power ground for right-channel H-bridge only
PV
DD
V
DD
supply for charge-pump and gate-drive circuitry
RCOMP
RINN
Compensation capacitor terminal for right-channel Class-D amplifier
Class-D right-channel negative input
45
RINP
44
Class-D right-channel positive input
RPV
DD
33, 40
34, 35
38, 39
Class-D amplifier right-channel power supply
ROUTN
ROUTP
Class-D amplifier right-channel negative output of H-bridge
Class-D amplifier right-channel positive output of H-bridge
Active-lowlogic-levelshutdowninputsignal. WhenSHUTDOWNisheldlow, thedevicegoesintoshutdownmode.
When SHUTDOWN is held at logic high, the device operates normally.
1
SHUTDOWN
V2P5
VCP
29
22
2.5-V internal reference bypass
Storage capacitor terminal for charge pump
V
bias supply for analog circuitry. This terminal needs to be well filtered to prevent degrading the device
DD
performance.
V
DD
8
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPA005D12
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS241B – AUGUST 1999 – REVISED MARCH 2000
Class-D amplifier faults
Table 1. Class-D Amplifier Fault Table
†
†
FAULT 0
FAULT 1
DESCRIPTION
1
0
1
1
No fault. — The device is operating normally.
Charge pump under-voltage lock-out (VCP-UV) fault. — All low-side transistors are turned on, shorting the load to
ground. Once the charge pump voltage is restored, normal operation resumes, but FAULT1 is still active. FAULT1 is
cleared by cycling MUTE, SHUTDOWN, or the power supply.
1
0
0
0
Over-current fault. — The output transistors are all switched off. This causes the load to be in a high-impedance state.
This is a latched fault and is cleared by cycling MUTE, SHUTDOWN, or the power supply.
Thermal fault. — All the low-side transistors are turned on, shorting the load to ground. This is latched fault and is
cleared by cycling MUTE, SHUTDOWN, or the power supply.
†
These logic levels assume a pullup to PV
DD
from the open-drain outputs.
absolute maximum ratings over operating free-air temperature range, T = 25°C (unless otherwise
C
‡
noted)
Supply voltage, V
(PV , LPV , RPV , V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
DD DD DD DD
DD
Input voltage, V (SHUTDOWN, MUTE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 5.8 V
I
Output current, I (FAULT0, FAULT1), open drain terminated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 mA
O
Charge pump voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PV
+ 15 V
CP
DD
Continuous H-bridge output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 A
Pulsed H-Bridge output current, each output, I (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 A
max
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Ratings Table
Operating virtual junction temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 150°C
J
Operating case temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 125°C
C
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
stg
†
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.
NOTE 1: Pulse duration = 10 ms, duty cycle
2%
DISSIPATION RATING TABLE
DERATING FACTOR = 70°C
†
T
≤ 25°C
T
A
T
A
= 85°C
T = 125°C
A
A
PACKAGE
POWER RATING
ABOVE T = 25°C
POWER RATING POWER RATING POWER RATING
A
DCA
5.6 W
44.8 mW/°C
3.6 W 2.9 W 1.1 mW
†
Please see the Texas Instruments document, PowerPAD Thermally Enhanced Package Application Report (literature number
SLMA002), for more information on the PowerPAD package. The thermal data was measured on a PCB layout based on the
information in the section entitled Texas Instruments Recommended Board for PowerPAD on page 33 of the before mentioned
document.
recommended operating conditions
MIN NOM
4.5
MAX
UNIT
Supply voltage, PV , LPV , RPV , V
DD DD
5.5
V
V
V
DD
DD
High-level input voltage, V
4.25
IH
Low-level input voltage, V
0.75
1
IL
Audio inputs, LINN, LINP, RINN, RINP, differential input voltage
PWM frequency
V
RMS
kHZ
150
450
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPA005D12
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS241B – AUGUST 1999 – REVISED MARCH 2000
electrical characteristics, Class-D amplifier, V
= PV
= LPV
= RPV
= 5 V, R = 4 Ω,
DD
DD
DD
DD L
T = 25°C, See Figure 1 (resistive load) (unless otherwise noted)
C
PARAMETER
TEST CONDITIONS
= LPV = RPV = 4.5 V to
DD
MIN
TYP
MAX
UNIT
V = PV
DD
5.5 V
DD
DD
PSRR
Power supply rejection ratio
40
dB
I
I
I
I
I
Supply current
No load,
MUTE = 0 V
SHUTDOWN = 0 V
No filter
25
3.9
0.2
35
10
10
1
mA
mA
µA
µA
µA
DD
DD
DD
IH
(MUTE) Supply current, mute mode
(SD)
Supply current, shutdown mode
High-level input current
V
V
= 5.3 V
IH
Low-level input current
= –0.3 V
–1
IL
IL
Total static drain-to-source on-state
resistance (low-side plus high-side FETs)
r
r
I
= 2 A
700
900
mΩ
DS(on)
DS(on)
D
D
Matching, high-side to high-side, low-side to
low-side, same channel
I
= 0.5 A
95%
99%
operating characteristics, Class-D amplifier, V
= PV
= LPV
= RPV
= 5 V, R = 4 Ω,
DD
DD
DD
DD L
T = 25°C, See Figure 1 (unless otherwise noted)
C
PARAMETER
TEST CONDITIONS
MIN
TYP
2
MAX
UNIT
P
O
RMS output power, THD = 0.5%, per channel
W
THD+N Total harmonic distortion plus noise
Efficiency
P
P
= 1 W,
= 1 W,
f = 1 kHz
= 8 Ω
0.2%
80%
25
O
R
O
L
A
Gain
dB
V
Left/right channel gain matching
Noise floor
95%
20
99%
–55
70
dBV
dB
Dynamic range
Crosstalk
f = 1 kHz
–55
dB
Frequency response bandwidth, post output filter, –3 dB
Maximum output power bandwidth
20000
20
Hz
B
OM
kHz
thermal resistance
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
R
Thermal resistance, junction-to-pad
Thermal shutdown temperature
10
°C/W
θJP
165
°C
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPA005D12
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS241B – AUGUST 1999 – REVISED MARCH 2000
PARAMETER MEASUREMENT INFORMATION
42
41
FAULT0
FAULT1
1
2
3
SHUTDOWN
MUTE
PV
PV
15 µH
DD
14,15
LOUTN
DD
AGND
0.22 µF
0.22 µF
1 µF
4 Ω
9,16
LPV
DD
5 V
10,11
29
LOUTP
V2P5
1 µF
15 µH
5
4
LINP
LINN
Balanced
Differential
Input Signal
1 µF
6
LCOMP
RCOMP
1 µF
43
470 pF
470 pF
8
V
DD
48
COSC
470 pF
25
CP1
47 nF
47 nF
1 µF
24
23
44
CP2
CP3
RINP
RINN
Balanced
Differential
Input Signal
45
1 µF
33,40
7,20,46,47
26
22
CP4
VCP
RPV
DD
5 V
AGND (see Note A)
PGND (see Note A)
12,13,27,36,37
2.2 µF
21, 28
5 V
PV
DD
15 µH
34,35
38,39
ROUTN
ROUTP
0.22 µF
0.22 µF
1 µF
4 Ω
15 µH
Figure 1. 5-V, 4-Ω Test Circuit, Class-D Amplifier
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPA005D12
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS241B – AUGUST 1999 – REVISED MARCH 2000
MECHANICAL DATA
DCA (R-PDSO-G**)
PowerPAD PLASTIC SMALL-OUTLINE PACKAGE
48 PINS SHOWN
0,27
0,17
M
0,08
0,50
48
25
Thermal Pad
(See Note D)
6,20
6,00
8,30
7,90
0,15 NOM
Gage Plane
1
24
0,25
A
0°–8°
0,75
0,50
Seating Plane
0,10
0,15
0,05
1,20 MAX
PINS **
48
56
64
DIM
12,60
12,40
14,10
13,90
17,10
16,90
A MAX
A MIN
4073259/A 01/98
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. The package thermal performance may be enhanced by bonding the thermal pad to an external thermal plane.
This pad is electrically and thermally connected to the backside of the die and possibly selected leads.
E. Falls within JEDEC MO-153
PowerPAD is a trademark of Texas Instruments.
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
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