Texas Instruments TPA032D01DCAR, TPA032D01DCA Datasheet

TPA032D01

10-W MONO CLASS-D AUDIO POWER AMPLIFIER

SLOS282A – DECEMBER 1999 – REVISED MARCH 2000

D

Extremely Efficient Class-D Mono
Operation

D

Drives Mono Speaker

D

10-W BTL Output Into 4 Ω From 12 V

D

32-W Peak Music Power

D

Fully Specified for 12-V Operation

D

Low Shutdown Current

D

Thermally-Enhanced PowerP AD Surface­Mount Packaging

D

Thermal and Under-Voltage Protection

description

The TPA032D01 is a monolithic power IC mono
audio amplifier that operates in extremely efficient
Class-D operation, using the high switching speed
of power DMOS transistors to replicate the analog
input signal through high-frequency switching of
the output stage. This allows the TPA032D01 to
be configured as a bridge-tied load (BTL) amplifier
capable of delivering up to 10 W of continuous
average power into a 4-Ω load at 0.5% THD+N
from a 12-V power supply in the high-fidelity audio
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 supply
current to 20 µA, making the device ideal for
battery-powered applications.

SHUTDOWN

MUTE
AGND

INN
INP

COMP

AGND

V

DD

PV

DD

OUTP
OUTP
PGND
PGND
OUTN
OUTN

PV

DD

VCCREG

NC
NC

AGND

PV

DD

VCP

NC

CP1

NC – No internal connection

DCA PACKAGE

(TOP VIEW)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25

COSC
AGND
AGND
AGND
AGND
AGND
FAULT0
FAULT1
PV

DD

NC
NC
PGND
PGND
NC
NC
PV

DD

V

CC

NC
NC
V2P5
PV

DD

PGND
NC
CP2

The output stage is compatible with a range of power supplies from 8 V to 14 V . Protection circuitry is included
to increase device reliability: thermal and under-voltage shutdown, with a status feedback terminal for use when
any error condition is encountered.

The high switching frequency of the TP A032D01 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 TPA032D01 is offered in the thermally enhanced 48-pin PowerPAD TSSOP surface-mount package
(designator DCA).

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.

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.

Copyright  2000, Texas Instruments Incorporated

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

1

T
l

R
l

D

7
11

94

2

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

•

PV

DD

INP
INN

COMP

V

DD

COSC

PV

DD

+
_

10 kΩ 10 kΩ

1.5 V

V

DD

RAMP

GENERATOR

TPA032D01

10-W MONO CLASS-D AUDIO POWER AMPLIFIER

SLOS282A – DECEMBER 1999 – REVISED MARCH 2000

schematic

FAULT0

OUTN

OUTP

PV

DD

VCP PV

VCP PV

+
_

GATE

DRIVE

GATE

DRIVE

DD

DD

PV

DD

THERMAL

DETECT

VCP-UVLO

DETECT

CONTROL and

PV

DD

5-V

REGULATOR

and BIASES

FAULT1

STARTUP

LOGIC

SHUTDOWN

MUTE

V

VCCREG

CC

V2P5

emp
ate

e
ease

ate:

–
–

AGND

PGND

NOTE A: VDD and PVDD are externally connected. AGND and PGND are externally connected.

PV

DD

DOUBLER

CHARGE PUMP

VCP

CP2

CP1

DESCRIPTION

TPA032D01

10-W MONO CLASS-D AUDIO POWER AMPLIFIER

SLOS282A – DECEMBER 1999 – REVISED MARCH 2000

Terminal Functions

TERMINAL

NAME NO.

AGND 3, 7, 20,

COSC 48 Connect a capacitor from analog ground to this terminal to set the frequency of the ramp reference signal.
CP1 24 First diode node for charge pump
CP2 25 First inverter switching node for charge pump
FAULT0 42 Logic level fault0 output signal. Lower order bit of the two fault signals with open drain output.
FAULT1 41 Logic level fault1 output signal. Higher order bit of the two fault signals with open drain output.
COMP 6 Compensation capacitor terminal for Class-D amplifier
INN 4 Class-D negative input
INP 5 Class-D positive input
OUTN 14, 15 Class-D amplifier negative output of H-bridge
OUTP 10, 11 Class-D amplifier positive output of H-bridge
PV

DD

MUTE

NC 18, 19, 23,

PGND 12, 13 Power ground for H–bridge only
PGND 27 Power ground for charge pump only
PGND 36, 37 Power ground for right-channel H-bridge only
PV

DD

43, 44, 45,

46, 47

9, 16 Class-D amplifier power supply

2

26, 30, 31,
34, 35, 38,

39

21, 28, 33,40VDD supply for charge-pump and gate drive circuitry

Analog ground for headphone and Class-D analog circuitry

Active-low TTL 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.
Not connected

SHUTDOWN

V2P5 29 2.5V internal reference bypass. This terminal requires a capacitor to ground.
V

CC

VCCREG 17 5-V regulator output. This terminal requires a 1-µF capacitor to ground for stability reasons.
VCP 22 Connect a capacitor from this terminal to power ground to provide storage for the charge pump output voltage.
V

DD

1

32 5V supply to circuitry. This terminal is typically connected to VCCREG.

8 VDD bias supply for analog circuitry. This terminal needs to be well filtered to prevent degrading the device

Active-low TTL logic-level shutdown input signal. When SHUTDOWN is held low, the device goes into shutdown
mode. When SHUTDOWN

performance.

is held high, the device operates normally.

Class-D amplifier faults

Table 1. Class-D Amplifier Fault Table

FAULT 0 FAULT 1 DESCRIPTION

1 1 No fault. The device is operating normally.
0 1 Charge pump under-voltage lock-out (VCP-UV) fault. All low-side transistors are turned on, shorting the load to

0 0 Thermal fault. All the low-side transistors are turned on, shorting the load to ground. Once the junction temperature

ground. Once the charge pump voltage is restored, normal operation resumes, but FAUL T1 is still active. This is not
a latched fault, however. FAULT1 is cleared by cycling MUTE

drops 20°C, normal operation resumes (not a latched fault). But the FAULTx terminals are still set and are cleared
by cycling MUTE

, SHUTDOWN, or the power supply.

, SHUTDOWN, or the power supply.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

TPA032D01
10-W MONO CLASS-D AUDIO POWER AMPLIFIER

SLOS282A – DECEMBER 1999 – REVISED MARCH 2000

AVAILABLE OPTIONS

T

A

–40°C to 125°C TPA032D01DCA

†

The DCA package is available in left-ended tape and reel. T o order
a taped and reeled part, add the suffix R to the part number (e.g.,
TPA032D01DCAR).

PACKAGED DEVICES

†

TSSOP

(DCA)

absolute maximum ratings over operating free-air temperature range, TC = 25°C (unless otherwise
noted)

†

NOTE 1: Pulse duration = 10 ms, duty cycle v 2%

†

Supply voltage, (VDD, PVDD) 14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Logic supply voltage, (VCC) 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage, VI (MUTE, MODE, SHUTDOWN) –0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output current, I

(FAULT0, FAULT1), open drain terminated 1 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

Supply/load voltage, (FAULT0, FAULT1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Charge pump voltage, VCP PVDD + 20 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous H-bridge output current (1 H-bridge conducting) 3.5 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pulsed H-Bridge output current, each output, I
Continuous V

REG output current, IO (VCCREG) 150 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

(see Note 1) 7 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

max

Continuous total power dissipation, TC = 25°C See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating virtual junction temperature range, TJ –40°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating case temperature range, TC –40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

–65°C to 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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.

DISSIPATION RATING TABLE

PACKAGE

DCA 5.6 W 44.8 mW/°C 3.6 W 2.9 W

‡

Please see the Texas Instruments document,

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

Recommended Board for PowerPAD

TA ≤ 25°C

POWER RATING

‡

DERATING FACTOR

ABOVE TA = 25°C

PowerPAD Thermally Enhanced Package Application

on page 33 of the before mentioned document.

TA = 70°C

POWER RATING

TA = 85°C

POWER RATING

Texas Instruments

recommended operating conditions

MIN NOM MAX UNIT

Supply voltage, VDD, PVDD, LPVDD, RPV
Logic supply voltage, V
High-level input voltage, VIH (MUTE, SHUTDOWN) 2 VDD + 0.3 V V
Low-level input voltage, VIL (MUTE, SHUTDOWN) –0.3 0.8 V
Audio inputs, LINN, LINP, RINN, RINP, differential input voltage 1 V
PWM frequency 100 250 500 kHZ

4

CC

DD

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

8 14 V

4.5 5.5 V

RMS

TPA032D01

10-W MONO CLASS-D AUDIO POWER AMPLIFIER

SLOS282A – DECEMBER 1999 – REVISED MARCH 2000

electrical characteristics Class-D amplifier, VDD = PVDD = 12 V, RL = 4 Ω to 8 Ω, TA = 25°C,
See Figure 1 (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Power supply rejection ratio VDD = PVDD = xPVDD = 11 V to 13 V –40 dB

I

DD

I

DD(Mute)

I

DD(S/D)

|IIH| High-level input current (MUTE, MODE,

|IIL| Low-level input current (MUTE, MODE,

r

DS(on)

r

DS(on)

operating characteristics, Class-D amplifier, VDD = PVDD = 12 V, RL = 4 Ω, TA = 25°C, See Figure 1
(unless otherwise noted)

Supply current No output filter connected 25 35 mA
Supply current, mute mode MUTE = 0 V 10 18 mA
Supply current, shutdown mode SHUTDOWN = 0 V 20 30 µA

SHUTDOWN

SHUTDOWN
Static drain-to-source on-state resistance

(high-side + low-side FETs)
Matching, high-side to high-side, low-side to

low-side, same channel

)

)

VIH = 5.25 V 10 µA

VIL = –0.3 V 10 µA

IDD = 0.5 A 720 800 mΩ

95% 98%

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

P

Output power

O

Efficiency

A

Gain 25 dB

V

Noise floor –60 dB
Dynamic range 80 dB
Crosstalk f = 1 kHz –50 dB
Frequency response bandwidth, post output filter, –3 dB 20 20000 Hz

B

Maximum output power bandwidth 20 kHz

OM

Z

Input impedance 10 kΩ

I

NOTE 2: Output power is thermally limited, TA = 23°C

f = 1 kHz,
THD = 0.5%
Device soldered on PCB,
See Note 2

PO = 10 W,
f = 1 kHz

10 W

77%

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

5

TPA032D01
10-W MONO CLASS-D AUDIO POWER AMPLIFIER

SLOS282A – DECEMBER 1999 – REVISED MARCH 2000

operating characteristics, Class-D amplifier, VDD = PVDD = 12 V, RL = 8 Ω,

= 25°C, See Figure 2 (unless otherwise noted)

T

A

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

THD = 0.5%

P

Output power,

O

Efficiency

A

Gain 25 dB

V

Noise floor –60 dB
Dynamic range 80 dB
Crosstalk f = 1 kHz –50 dB
Frequency response bandwidth, post output filter, –3 dB 20 20000 Hz

B

Maximum output power bandwidth 20 kHz

OM

Z

Input impedance 10 kΩ

I

NOTE 2: Output power is thermally limited, TA = 85°C

operating characteristics, VCC 5-V regulator, TA = 25°C (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

O

I

OS

†

Pulse width must be limited to prevent exceeding the maximum operating virtual junction temperature of 150°C.

Output voltage

Short-circuit output current VDD = PVDD = LPVDD = RPVDD = 8 V to 14 V

VDD = PVDD = LPVDD = RPVDD = 8 V to 14 V,
IO = 0 to 90 mA

Device soldered on PCB,
See Note 2

PO = 7.5 W,
f = 1 kHz

7.5 W

85%

4.5 5.5 V

†

90 mA

thermal shutdown

Thermal shutdown temperature 165 °C
Thermal shutdown hysteresis 30 °C

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPA032D01

10-W MONO CLASS-D AUDIO POWER AMPLIFIER

SLOS282A – DECEMBER 1999 – REVISED MARCH 2000

PARAMETER MEASUREMENT INFORMATION

Balanced

Differential

Input Signal

1000 pF

1000 pF

7,20,43, 44, 45, 46,47

VCCREG
VCCREG

9,16

12 V

1 µF

1 µF

12,13,27,36,37

1
2

5

4

6

48

SHUTDOWN
MUTE

PV

DD

INP

INN

COMP

COSC

AGND
PGND

FAULT0
FAULT1

OUTN

OUTP

V2P5

V

DD

VCCREG

42
41

14,15

10,11

29

8

17

15 µH

0.22 µF

0.22 µF

15 µH

12 V

1 µF

0.1 µF

1 µF

V

CC

4 Ω

12 V

To

VCCREG

500 kΩ

100 kΩ

21, 28, 33, 34

32

PV

DD

V

CC

Figure 1. 12-V, 4-Ω Test Circuit

CP1

CP2

VCP

24

47 nF

25
22

0.1 µF

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

7