Texas Instruments TPA3008D2 Manuale utente

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FEATURES DESCRIPTION

APPLICATIONS

10 µF

220 nF 220 nF

PVCC PVCC

220 nF 220 nF

PVCC PVCC

220 pF

Left Differential

Inputs

Right Differential

Inputs

Shutdown/Mute

Gain

Control

BSLP

PVCCL

LOUTP

PGNDL

LOUTN

PVCCL

BSLN

TPA3008D2

VCLAMPR

SHUTDOWN

V2P5

RINP

LINN

LINP

AVDDREF

GAIN0

GAIN1

AVDD

AGND

COSC

ROSC

AVCC

VCLAMPL

BSRP

PVCCR

ROUTP

PGNDR

ROUTN

PVCCR

BSRN

RINN

AVCC

AGND

10 µF

0.1 µF0.1 µF

0.47 µF

0.1 µF0.1 µF

10 µF10 µF

1 µF

120 kΩ

1 µF

FAULT

0.1 µF10 µF

1 µF

Control

†Optional output filter for EMI suppression

†

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

10-W STEREO CLASS-D AUDIO POWER AMPLIFIER

•10-W/Channel Into an 16-ΩLoad From a

The TPA3008D2 is a 10-W (per channel) efficient,17-V Supply

class-D audio amplifier for driving bridged-tied stereospeakers. The TPA3008D2 can drive stereo speakers•Up to 92% Efficient, Class-D Operation

as low as 8 Ω. The high efficiency of the TPA3008D2Eliminates Need For Heatsinks

eliminates the need for external heatsinks when•8.5-V to 18-V Single-Supply Operation

playing music.•Four Selectable, Fixed Gain Settings

The gain of the amplifier is controlled by two gain•Differential Inputs Minimizes Common-Mode

select pins. The gain selections are 15.3, 21.2, 27.2,Noise

and 31.8 dB.•Space-Saving, Thermally Enhanced

The outputs are fully protected against shorts toPowerPAD™ Packaging

GND, VCC, and output-to-output shorts. A fault ter-•Thermal and Short-Circuit Protection

minal allows short-circuit fault reporting and automaticWith Auto Recovery Option

recovery. Thermal protection ensures that the maxi-mum junction temperature is not exceeded.•Pinout Similar to TPA3000D Family

•LCD Monitors and TVs•All-In-One PCs

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2004, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.

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ABSOLUTE MAXIMUM RATINGS

DISSIPATION RATING TABLE

RECOMMENDED OPERATING CONDITIONS

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

These devices have limited built-in ESD protection. The leads should be shorted together or the deviceplaced in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

over operating free-air temperature range (unless otherwise noted)

(1)

TPA3008D2

Supply voltage range AV

, PV

-0.3 V to 20 VLoad Impedance, R

≥6ΩSHUTDOWN -0.3 V to VCC + 0.3 VInput voltage range, V

GAIN0, GAIN1, RINN, RINP, LINN, LINP -0.3 V to 6 VContinuous total power dissipation See Dissipation Rating TableOperating free–air temperature range, T

- 40°C to 85°COperating junction temperature range, T

- 40°C to 150°CStorage temperature range, T

stg

- 65°C to 150°CLead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C

(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratingsonly, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operatingconditions” is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.

DERATINGPACKAGE T

≤25°Cθ

FACTOR T

= 70°C T

= 85°C(1/θ

)

PHP 4.3 W 1.14 °C/W

(1)

34.7 mW/°C

(1)

2.7 W 2.2 W

(1) Based on a JEDEC high-K PCB with the PowerPAD™ soldered to a thermal land on theprinted-circuit board. See the PowerPAD Thermally Enhanced Package application note (SLMA002).The PowerPAD must be soldered to the PCB.

= 25°C (unless otherwise noted)

MIN MAX UNIT

Supply voltage, V

, AV

8.5 18 VHigh-level input voltage, V

SHUTDOWN, GAIN0, GAIN1 2 VLow-level input voltage, V

SHUTDOWN, GAIN0, GAIN1 0.8 VSHUTDOWN, V

= V

= 18 V 10 µAHigh-level input current, I

GAIN0, GAIN1, V

= 5.5 V, V

= 18 V 1 µASHUTDOWN, V

= 0 V, V

= 18 V 1 µALow-level input current, I

GAIN0, GAIN1, V

= 5.5 V, V

= 18 V 1 µAHigh-level output voltage, V

FAULT, I

= 100 µA AV

- 0.8 V VLow-level output voltage, V

FAULT, I

= -100 µA AGND + 0.8 V VFrequency is set by selection of ROSC and COSCOscillator frequency, f

OSC

200 300 kHz(see the Application Information Section).Operating free–air temperature, T

-40 85 °C

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AVAILABLE OPTIONS

DC ELECTRICAL CHARACTERISTICS

AC ELECTRICAL CHARACTERISTICS

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

PACKAGED DEVICE48-PIN HTQFP (PHP)

(1)

-40°C to 85°C TPA3008D2PHP

(1) The PHP package is available taped and reeled. To order a tapedand reeled part, add the suffix R to the part number (e.g.,TPA3008D2PHPR).

= 25°C, V

= 12 V, R

= 8 Ω(unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Class-D output offset voltage INN and INP connected together,|V

| 2 5 55 mV(measured differentially) Gain = 31.8 dBV2P5 2.5-V Bias voltage No load 2.5 VI

= 10 mA, SHUTDOWN = 2 V,AV

+5-V internal supply voltage 4.5 5 5.5 VV

= 8.5 V to 18 VPSRR Power supply rejection ratio V

= 11.5 V to 12.5 V -76 dBI

Quiescent supply current SHUTDOWN = 2 V, no load 11 22 mAQuiescent supply current in shut-I

CC(SD)

SHUTDOWN = 0 V 1.6 25 µAdown mode

High side 600V

= 12 V,r

DS(on)

Drain-source on-state resistance I

= 1 A, Low side 500 mΩT

= 25°C

Total 1100 1300GAIN0 = 0.8 V 14.6 15.3 16.2GAIN1 = 0.8 V

GAIN0 = 2 V 20.5 21.2 21.8G Gain dBGAIN0 = 0.8 V 26.4 27.2 27.8GAIN1 = 2 V

GAIN0 = 2 V 31.1 31.8 32.5t

Turnon time C

(V2P5)

= 1 µF, SHUTDOWN = 2 V 16 mst

off

Turnoff time C

(V2P5)

= 1 µF, SHUTDOWN = 0.8 V 60 µs

= 25°C, V

= 12 V, R

= 8 Ω, (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

200 mV

ripple from 20 Hz to 1 kHz,k

SVR

Supply voltage rejection ratio -70 dBGain = 15.6 dB, Inputs ac-coupled to GNDTHD+N = 0.13%, f = 1 kHz, R

= 8 Ω5THD+N = 10%, f = 1 kHz, R

= 8 Ω8.5THD+N = 0.16%, f = 1 kHz, R

= 16 Ω,P

Continuous output power W5V

= 17 VTHD+N = 10%, f = 1 kHz, R

= 16 Ω,

10V

= 17 VTotal harmonic distortion plusTHD+N P

= 1 W, f = 1 kHz, R

= 8 Ω0.1%noise

20 Hz to 22 kHz, A-weighted filter,V

Output integrated noise floor -80 dBGain = 15.6 dBCrosstalk P

= 1 W, R

= 8 Ω, Gain = 15.6 dB, -93 dBf = 1 kHzMaximum output at THD+N < 0.5%,SNR Signal-to-noise ratio 97 dBf = 1 kHz, Gain = 15.6 dBThermal trip point 150 °CThermal hystersis 20 °C

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Biases

and

References

TTL Input

Buffer

(VCC Compl)

Start-up and

Protection

Logic

Detect

Thermal

VDDok

RINP

RINN

Ramp

Generator

COSC

ROSC

VCCok

5-V LDO

AVCC

AVDD

VDD

and

PWM

Mode

Logic

Gain

Adj.

Gain

Control

Deglitch

and

PWM

Mode

Logic

Gain

Adj.

LINP

LINN

Gate

Drive

VClamp

Gen

Gate

Drive

PVCC

BSRP

PVCCR(2)

ROUTP(2)

PGNDR

ROUTN(2)

PVCCR(2)

BSRN

Gate

Drive

VClamp

Gen

Gate

Drive

PVCC

BSLP

PVCCL(2)

LOUTP(2)

PGNDL

LOUTN(2)

PVCCL(2)

BSLN

VCLAMPL

VCLAMPR

GAIN0 4To Gain Adj.

Blocks and

Start-up Logic

SHUTDOWN

V2P5

V2P5 V2P5

AVCC

AGND(2)

V2P5

Deglitch

GAIN1

AVDDREF

FAULT

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

FUNCTIONAL BLOCK DIAGRAM

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13 14 15 16 17 18 19 20 21 22 23 24

48 47 46 45 44 43 42 41 40 39 38 37

BSRN

PVCCR

ROUTN

PGNDR

ROUTP

PVCCR

BSRP

VCLAMPR

AGND

COSC

ROSC

AGND

VCLAMPL

SHUTDOWN

RINN

RINP

V2P5

LINP

LINN

GAIN0

GAIN1

FAULT

BSLN

PVCCL

LOUTN

PGNDL

LOUTP

PVCCL

BSLP

TPA3008D2

AVCC

AVDD

AVDDREF

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

PHP PACKAGE

(TOP VIEW)

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TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

TERMINAL FUNCTIONS

PIN NAME PIN NUMBER I/O DESCRIPTION

AGND 26, 30 - Analog ground for digital/analog cells in coreAV

33 - High-voltage analog power supply, not connected internally to PVCCR or PVCCL5-V Regulated output for use by internal cells and GAIN0, GAIN1 pins only. NotAV

29 O

specified for driving other external circuitry.AV

REF 7 O 5-V Reference output—connect to gain setting resistor or directly to GAIN0, GAIN1.BSLN 13 - Bootstrap I/O for left channel, negative high-side FETBSLP 24 - Bootstrap I/O for left channel, positive high-side FETBSRN 48 - Bootstrap I/O for right channel, negative high-side FETBSRP 37 - Bootstrap I/O for right channel, positive high-side FETCOSC 28 I/O I/O for charge/discharging currents onto capacitor for ramp generator.Short-circuit detect fault output.FAULT = high, short-circuit detected.FAULT 11 O

FAULT = low, normal operation.Status is reset when power is cycled or SHUTDOWN is cycled.GAIN0 9 I Gain select least significant bit. TTL logic levels with compliance to AV

.GAIN1 10 I Gain select most significant bit. TTL logic levels with compliance to AV

.LINN 6 I Negative audio input for left channelLINP 5 I Positive audio input for left channelLOUTN 16, 17 O Class-D 1/2-H-bridge negative output for left channelLOUTP 20, 21 O Class-D 1/2-H-bridge positive output for left channel8, 12, 31, 32,NC - No internal connection34, 35PGNDL 18, 19 - Power ground for left channel H-bridgePGNDR 42, 43 - Power ground for right channel H-bridgePower supply for left channel H-bridge (internally connected to pins 22 and 23), notPVCCL 14, 15 -

connected to PVCCR or AV

.Power supply for left channel H-bridge (internally connected to pins 14 and 15), notPVCCL 22, 23 -

connected to PVCCR or AV

.Power supply for right channel H-bridge (internally connected to pins 46 and 47),PVCCR 38, 39 -

not connected to PVCCL or AV

.Power supply for right channel H-bridge (internally connected to pins 38 and 39),PVCCR 46, 47 -

not connected to PVCCL or AV

.RINP 3 I Positive audio input for right channelRINN 2 I Negative audio input for right channelROSC 27 I/O I/O current setting resistor for ramp generator.ROUTN 44, 45 O Class-D 1/2-H-bridge negative output for right channelROUTP 40, 41 O Class-D 1/2-H-bridge positive output for right channelShutdown signal for IC (low = shutdown, high = operational). TTL logic levels withSHUTDOWN 1 I

compliance to V

.VCLAMPL 25 - Internally generated voltage supply for left channel bootstrap capacitors.VCLAMPR 36 - Internally generated voltage supply for right channel bootstrap capacitors.V2P5 4 O 2.5-V Reference for analog cells.Connect to AGND and PGND—should be the center point for both grounds. InternalThermal Pad - -

resistive connection to AGND.

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TYPICAL CHARACTERISTICS

0.01 20 20 k

100 1 k 10 k

THD+N −Total Harmonic Distortion + Noise − %

VCC = 18 V,

RL= 16 

Gain = 21.6 dB

f − Frequency − Hz

0.1

PO= 2.5 W

PO= 0.5 W

PO= 1 W

0.005

0.01

0.1

20 20 k

100 1 k 10 k

PO= 2.5 W

THD+N −Total Harmonic Distortion + Noise − %

VCC = 12 V,

RL= 16 ,

Gain = 21.6 dB

f − Frequency − Hz

PO= 1 W

PO= 0.5 W

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

TABLE OF GRAPHS

FIGURE

THD+N Total harmonic distortion + noise vs Frequency 1, 2, 3, 4THD+N Total harmonic distortion + noise vs Output power 5, 6Closed-loop response 7Output power vs Supply voltage 8, 9Efficiency vs Output power 10Efficiency vs Total output power 11V

Supply current vs Total output power 12Crosstalk vs Frequency 13k

SVR

Supply ripple rejection ratio vs Frequency 14CMRR Commom-mode rejection ratio vs Frequency 15

TOTAL HARMONIC DISTORTION + NOISE TOTAL HARMONIC DISTORTION + NOISEvs vsFREQUENCY FREQUENCY

Figure 1. Figure 2.

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0.005

0.01

0.1

20 20 k

100 1 k 10 k

PO= 5 W

THD+N −Total Harmonic Distortion + Noise − %

VCC = 18 V,

RL= 8 ,

Gain = 21.6 dB

f − Frequency − Hz

PO= 1 W

PO= 2.5 W

0.01

0.1

20 20 k

100 1 k 10 k

THD+N −Total Harmonic Distortion + Noise − %

VCC = 12 V,

RL= 8 

Gain = 21.6 dB

f − Frequency − Hz

PO= 1 W

PO= 2.5 W

PO= 0.5 W

0.01

0.1

20m 10100 m 1

THD+N −Total Harmonic Distortion + Noise − %

PO− Output Power − W

VCC = 12 V,

RL= 8 ,

Gain = 21.6 dB

20200 m 2

1 kHz

20 Hz

20 kHz

0.01

0.1

20m 10100 m 1

THD+N −Total Harmonic Distortion + Noise − %

PO− Output Power − W

VCC = 18 V,

RL= 16 ,

Gain = 21.6 dB

20 Hz

20200 m 2

20 kHz

1 kHz

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

TOTAL HARMONIC DISTORTION + NOISE TOTAL HARMONIC DISTORTION + NOISEvs vsFREQUENCY FREQUENCY

Figure 3. Figure 4.

TOTAL HARMONIC DISTORTION + NOISE TOTAL HARMONIC DISTORTION + NOISEvs vsOUTPUT POWER OUTPUT POWER

Figure 5. Figure 6.

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10 100 1k

Gain − dB

f − Frequency − Hz

10k

080k

VCC = 12 V,

RL= 8 Ω,

Gain = 32 dB

33 kHz, RC LPF

Gain

Phase

Phase −

100

−150



−100

−50

150

8 9 10 11 12 13 14 15 16 17 18

PO− Output Power − W

THD+N = 10%

THD+N = 1%

RL= 16 

VCC − Supply Voltage − V

8 9 10 11 12 13 14

THD+N = 1%

THD+N = 10%

RL= 8 

VCC − Supply Voltage − V

PO− Output Power − W

Power represented by dashed line

may require external heatsinking

0 1 2 3 4 5 6

PO− Output Power (Per Channel) − W

Efficiency − %

100

7 8 9 10

VCC = 18 V,

RL= 16 

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

OUTPUT POWER

vsCLOSED-LOOP RESPONSE SUPPLY VOLTAGE

Figure 7. Figure 8.

OUTPUT POWER EFFICIENCYvs vsSUPPLY VOLTAGE OUTPUT POWER

Figure 9. Figure 10.

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100

0 1 2 3 4 5 6 7 8 9 10

Efficiency − %

16 

8 

PO− Total Output Power − W

11 12

VCC = 12 V,

LC Filter,

Resistive Load,

Stereo Operation

0.2

0.4

0.6

0.8

1.2

1.4

0 2 4 6 8 10 12

PO− Total Output Power − W

1.6

1.8

2.0

14 16 18 20

LC Filter,

Resistive Load,

Stereo Operation

− Supply Current − AVCC

VCC = 18 V,

RL= 16 

VCC = 12 V,

RL= 16 

VCC = 12 V,

RL= 8 

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

20 100 1 k 10 k

Crosstalk − dB

f − Frequency − Hz

VCC = 12 V,

PO= 2.5 W,

Gain = 21.6 dB

RL= 8

20 k

−100

−90

−80

−70

−60

−50

−40

20 100 1 k 10 k

f − Frequency − Hz

kSVR − Supply Ripple Rejection Ratio − dB

VCC = 12 V,

V(RIPPLE) = 200 mVPP,

RL= 8 ,

Gain = 15.6 dB

20 k

−30

−20

−10

TPA3008D2

SLOS435A – MAY 2004 – REVISED JULY 2004

EFFICIENCY SUPPLY CURRENTvs vsTOTAL OUTPUT POWER TOTAL OUTPUT POWER

Figure 11. Figure 12.

CROSSTALK SUPPLY RIPPLE REJECTION RATIOvs vsFREQUENCY FREQUENCY

Figure 13. Figure 14.

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