Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Audio amplifier 1-channel (mono) Class D HTSSOP 24

− Output Power − W

0 4 8 12 16 20

Efficiency − %

EFFICIENCY

OUTPUT POWER

= 18 V

4 Ω

8 Ω

− Load Impedance − Ω

− Maximum Output Power − W

MAXIMUM OUTPUT POWER

LOAD IMPEDANCE

= 25°C,

10% THD Maximum

= 18 V

= 15 V

= 12 V

3.6 4 5 6 7 8 9 10

TPA3001D1

www.ti.com

SLOS398E –DECEMBER 2002–REVISED AUGUST 2010

20-W MONO CLASS-D AUDIO POWER AMPLIFIER

Check for Samples: TPA3001D1

FEATURES

DESCRIPTION

• 20 W Into 8-Ω Load From 18-V Supply (10%

The TPA3001D1 (sometimes referred to as

THD+N)

TPA3001) is a 20-W monaural bridge-tied load (BTL)

class-D audio power amplifier (class-D amp) with high

• Short-Circuit Protection (Short to V

, Short to

efficiency, eliminating the need for heat sinks. The

GND, Short Between Outputs)

TPA3001D1 can drive 4-Ω or 8-Ω speakers with only

• Third-Generation Modulation Technique:

a ferrite bead filter required to reduce EMI.

– Replaces Large LC Filter With Small,

The gain of the amplifier is controlled by two input

Low-Cost Ferrite Bead Filter in Most

terminals, GAIN1 and GAIN0. This allows the

Applications

amplifier to be configured for a gain of 12, 18, 23.6,

– Improved Efficiency

or 36 dB. The differential input stage provides high

common-mode rejection and improved power-supply

– Improved SNR

rejection.

• Low Supply Current: 8 mA Typ at 12 V

The amplifier also includes depop circuitry to reduce

• Shutdown Control: < 1 mA Typ

the amount of pop at power-up and when cycling

• Space-Saving, Thermally-Enhanced

SHUTDOWN.

PowerPAD™ Packaging

The TPA3001D1 (TPA3001) is available in the 24-pin

thermally enhanced TSSOP package (PWP), which

APPLICATIONS

eliminates the need for an external heat sink.

• LCD Monitors/TVs

• Hands-Free Car Kits

• Powered Speakers

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.

2PowerPAD is a trademark of Texas Instruments.

3All other 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.

Summary of content (30 pages)

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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 20-W MONO CLASS-D AUDIO POWER AMPLIFIER Check for Samples: TPA3001D1 FEATURES DESCRIPTION • The TPA3001D1 (sometimes referred to as TPA3001) is a 20-W monaural bridge-tied load (BTL) class-D audio power amplifier (class-D amp) with high efficiency, eliminating the need for heat sinks. The TPA3001D1 can drive 4-Ω or 8-Ω speakers with only a ferrite bead filter required to reduce EMI.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 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.
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TPA3001D1 www.ti.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com THERMAL INFORMATION TPA3001D1 THERMAL METRIC (1) (2) qJA Junction-to-ambient thermal resistance qJCtop Junction-to-case (top) thermal resistance qJB Junction-to-board thermal resistance 15.2 yJT Junction-to-top characterization parameter 0.9 yJB Junction-to-board characterization parameter 8.4 qJCbot Junction-to-case (bottom) thermal resistance 1.2 (1) (2) UNITS PWP (24 Pins) 36.
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TPA3001D1 www.ti.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com EFFICIENCY vs OUTPUT POWER MAXIMUM OUTPUT POWER vs LOAD IMPEDANCE 21 90 8Ω 80 PO − Maximum Output Power − W 70 Efficiency − % 60 50 40 30 20 17 15 VCC = 15 V 13 11 VCC = 12 V 9 7 10 VCC = 12 V 0 0 2 4 6 8 VCC = 18 V 19 4Ω 10 12 TA = 25°C, 10% THD Maximum 5 3.6 4 14 5 PO − Output Power − W Figure 1. Figure 2.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 SUPPLY CURRENT vs SUPPLY VOLTAGE SHUTDOWN CURRENT vs SUPPLY VOLTAGE 5 11 ICC(SD) − Shutdown Current − µA SHUTDOWN = 0.8 V ICC − Supply Current − mA 10 9 8 7 4 3 2 1 0 6 8 10 12 14 16 8 18 10 14 16 Figure 5. Figure 6.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER 10 THD+N − Total Harmonic Distortion + Noise − % THD+N − Total Harmonic Distortion + Noise − % 10 VCC = 15 V RL = 8 Ω Gain = 12 dB 1 1 kHz 20 kHz 20 Hz 0.1 0. 01 0.001 VCC = 15 V RL = 8 Ω Gain = 36 dB 1 20 kHz 1 kHz 0.01 0 5 10 15 20 0 5 PO − Output Power − W 15 Figure 9. Figure 10.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER 10 THD+N − Total Harmonic Distortion + Noise − % THD+N − Total Harmonic Distortion + Noise − % 10 VCC = 12 V RL = 8 Ω Gain = 12 dB 1 1 kHz 20 kHz 20 Hz 0.1 0. 01 VCC = 12 V RL = 8 Ω Gain = 36 dB 1 1 kHz 20 kHz 20 Hz 0.1 0.01 0.001 0 5 10 0 15 5 15 Figure 13. Figure 14.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER 10 THD+N − Total Harmonic Distortion + Noise − % THD+N − Total Harmonic Distortion + Noise − % 10 VCC = 8 V RL = 4 Ω Gain = 12 dB 1 1 kHz 0.1 20 Hz 20 kHz 0.01 VCC = 8 V RL = 4 Ω Gain = 36 dB 1 1 kHz 0.1 20 kHz 20 Hz 0.01 0 2 4 6 0 2 PO − Output Power − W Figure 18.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY 1 THD+N − Total Harmonic Distortion + Noise − % THD+N − Total Harmonic Distortion + Noise − % 1 VCC = 15 V RL = 4 Ω PO = 10 W 0.1 PO = 500 mW 0.01 0.001 20 PO = 2 W 100 1k VCC = 12 V RL = 8 Ω PO = 5 W PO = 250 mW 0.1 0.01 PO = 1 W 0.001 20 10k 20k 100 f − Frequency − Hz Figure 22.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY SUPPLY VOLTAGE REJECTION RATIO vs FREQUENCY THD+N − Total Harmonic Distortion + Noise − % 10 −50 kSVR − Supply Voltage Rejection Ratio − dB VCC = 8 V RL = 4 Ω PO = 5 W 1 PO = 1 W 0.1 PO = 250 mW 0.01 0.001 20 100 −60 VCC = 8 V −70 VDD = 15 V −80 −90 20 10k 20k 1k C(Bypass) = 1 µF RL = 8 Ω 100 Figure 26.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 INPUT OFFSET VOLTAGE vs COMMON-MODE INPUT VOLTAGE 6 VIO − Input Offset Voltage − mV 5 VCC = 8 V to 18 V 4 3 2 1 0 −1 −2 −3 −4 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VIC − Common-Mode Input Voltage − V Figure 29.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com APPLICATION INFORMATION APPLICATION CIRCUIT U1 TPA3001D1 C1 IN– 0.47 µF 1 2 IN+ C2 0.47 µF 3 GAIN SELECT 4 GAIN SELECT 5 SHUTDOWN CONTROL 6 7 C10 1 µF VCC R2 C8 0.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 OUTP OUTN +12 V Differential Voltage Across Load 0V –12 V Current Figure 31. Traditional Class-D Modulation Scheme's Output Voltage and Current Waveforms Into an Inductive Load With No Input TPA3001D1 MODULATION SCHEME The TPA3001D1 uses a modulation scheme that still has each output switching from ground to VCC. However, OUTP and OUTN are now in phase with each other with no input.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com OUTP OUTN Differential Voltage Across Load Output = 0 V +12 V 0V –12 V Current OUTP OUTN Differential Voltage Output > 0 V +12 V 0V Across Load –12 V Current Figure 32. The TPA3001D1 Output Voltage and Current Waveforms Into an Inductive Load MAXIMUM ALLOWABLE OUTPUT POWER (SAFE OPERATING AREA) The TPA3001D1 can drive load impedances as low as 3.6 Ω from power supply voltages ranging from 8 V to 18 V.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 21 VCC = 18 V PO − Maximum Output Power − W 19 17 15 VCC = 15 V 13 11 VCC = 12 V 9 7 TA = 25°C, 10% THD Maximum 5 3.6 4 5 6 7 8 ZL − Load Impedance − Ω 9 10 Figure 33. Output Power DRIVING A LOW-IMPEDANCE LOAD FROM A HIGH POWER-SUPPLY VOLTAGE When driving low-impedance loads (e.g., a 4-Ω speaker), the output power can be limited by reducing the maximum audio input signal level or by reducing the gain of the TPA3001D1.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com For example, consider an application in which the TPA3001D1 drives an 8-Ω speaker from an 18-V power supply. The maximum output power with no distortion (less than 1% THD) is 16 W, which corresponds to a maximum peak output voltage of 16 V. For the same output voltage level driven into clipping (10% THD), the output power is increased to 20 W.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 SHORT-CIRCUIT PROTECTION The TPA3001D1 has short-circuit protection circuitry on the outputs that prevents damage to the device during output-to-output shorts, output-to-GND shorts, and output-to-VCC shorts. When a short-circuit is detected on the outputs, the part immediately disables the output drive and enters into shutdown mode.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com Table 1. Gain Settings GAIN1 GAIN0 AMPLIFIER GAIN (dB) INPUT IMPEDANCE (kΩ) TYP TYP 0 0 12 241 0 1 18 168 1 0 23.6 104 1 1 36 33 INPUT RESISTANCE Each gain setting is achieved by varying the input resistance of the amplifier, which can range from its smallest value to over six times that value.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 In this example, CI is 33 nF, so one would likely choose a value of 0.1 mF, as this value is commonly used. If the gain is known and will be constant, use ZI from Table 1 to calculate CI. A further consideration for this capacitor is the leakage path from the input source through the input network (CI) and the feedback network to the load.
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TPA3001D1 SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 www.ti.com DIFFERENTIAL INPUT The differential input stage of the amplifier cancels any noise that appears on both input lines of the channel. To use the TPA3001D1 EVM with a differential source, connect the positive lead of the audio source to the INP input and the negative lead from the audio source to the INN input.
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TPA3001D1 www.ti.com SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010 PRINTED-CIRCUIT BOARD (PCB) LAYOUT Because the TPA3001D1 is a class-D amplifier that switches at a high frequency, the layout of the printed-circuit board (PCB) should be optimized according to the following guidelines for the best possible performance. • Decoupling capacitors—As shown in the Typical Application Circuit , the high-frequency 0.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device TPA3001D1PWPR Package Package Pins Type Drawing SPQ HTSSOP 2000 PWP 24 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 16.4 Pack Materials-Page 1 6.95 B0 (mm) K0 (mm) P1 (mm) 8.3 1.6 8.0 W Pin1 (mm) Quadrant 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPA3001D1PWPR HTSSOP PWP 24 2000 367.0 367.0 38.
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