Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Audio amplifier 2-channel (stereo) Class D HTSSOP 28

LINP

LINN

RINP

RINN

SDSD

FaultFault

PLIMIT

PBTL

PVCC

8to26V

1 Fm

OUTNL

FERRITE

BEAD

FILTER

OUTPL

15W

FERRITE

BEAD

FILTER

FERRITE

BEAD

FILTER

OUTR+

OUTR-

OUTL+

OUTL-

Audio

Source

TPA3110D2

GAIN0

GAIN1

OUTNR

FERRITE

BEAD

FILTER

OUTPR

15W

FERRITE

BEAD

FILTER

FERRITE

BEAD

FILTER

TPA3110D2

www.ti.com

SLOS528D –JULY 2009–REVISED JULY 2012

15-W FILTER-FREE STEREO CLASS-D AUDIO POWER AMPLIFIER with

SPEAKERGUARD™

Check for Samples: TPA3110D2

FEATURES

APPLICATIONS

• 15-W/ch into an 8-Ω Loads at 10% THD+N

• Televisions

From a 16-V Supply

• Consumer Audio Equipment

• 10-W/ch into 8-Ω Loads at 10% THD+N From a

13-V Supply DESCRIPTION

The TPA3110D2 is a 15-W (per channel) efficient,

• 30-W into a 4-Ω Mono Load at 10% THD+N

Class-D audio power amplifier for driving bridged-tied

From a 16-V Supply

stereo speakers. Advanced EMI Suppression

• 90% Efficient Class-D Operation Eliminates

Technology enables the use of inexpensive ferrite

Need for Heat Sinks

bead filters at the outputs while meeting EMC

• Wide Supply Voltage Range Allows Operation

requirements. SpeakerGuard™ speaker protection

from 8 V to 26 V

circuitry includes an adjustable power limiter and a

DC detection circuit. The adjustable power limiter

• Filter-Free Operation

allows the user to set a "virtual" voltage rail lower

• SpeakerGuard™ Speaker Protection Includes

than the chip supply to limit the amount of current

Adjustable Power Limiter plus DC Protection

through the speaker. The DC detect circuit measures

• Flow Through Pin Out Facilitates Easy Board the frequency and amplitude of the PWM signal and

shuts off the output stage if the input capacitors are

Layout

damaged or shorts exist on the inputs.

• Robust Pin-to-Pin Short Circuit Protection and

Thermal Protection with Auto Recovery Option

The TPA3110D2 can drive stereo speakers as low as

4 Ω. The high efficiency of the TPA3110D2, 90%,

• Excellent THD+N / Pop-Free Performance

eliminates the need for an external heat sink when

• Four Selectable, Fixed Gain Settings

playing music.

• Differential Inputs

The outputs are also fully protected against shorts to

GND, VCC, and output-to-output. The short-circuit

protection and thermal protection includes an auto-

recovery feature.

Figure 1. TPA3110D2 Simplified Application Schematic

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.

2SpeakerGuard, PowerPad are trademarks of Texas Instruments.

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 (35 pages)

PAGE 1
TPA3110D2 www.ti.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 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. ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) UNIT VCC Supply voltage AVCC, PVCC –0.3 V to 30 V SD, GAIN0, GAIN1, PBTL, FAULT VI Interface pin voltage (2) PLIMIT –0.3 V to VCC + 0.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN MAX 26 UNIT VCC Supply voltage PVCC, AVCC 8 VIH High-level input voltage SD, GAIN0, GAIN1, PBTL 2 V VIL Low-level input voltage SD, GAIN0, GAIN1, PBTL 0.8 V VOL Low-level output voltage FAULT, RPULL-UP=100k, VCC=26V 0.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 PIN FUNCTIONS PIN NAME NUMBER I/O/P DESCRIPTION SD 1 I Shutdown logic input for audio amp (LOW = outputs Hi-Z, HIGH = outputs enabled). TTL logic levels with compliance to AVCC. FAULT 2 O Open drain output used to display short circuit or dc detect fault status. Voltage compliant to AVCC. Short circuit faults can be set to auto-recovery by connecting FAULT pin to SD pin.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 TYPICAL CHARACTERISTICS (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.) TOTAL HARMONIC DISTORTION vs FREQUENCY (BTL) TOTAL HARMONIC DISTORTION vs FREQUENCY (BTL) 10 Gain = 20 dB VCC = 12 V ZL = 8 Ω + 66 µH THD − Total Harmonic Distortion − % THD − Total Harmonic Distortion − % 10 1 0.1 PO = 5 W PO = 0.5 W 0.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.) TOTAL HARMONIC DISTORTION vs FREQUENCY (BTL) TOTAL HARMONIC DISTORTION vs FREQUENCY (BTL) 10 Gain = 20 dB VCC = 18 V ZL = 6 Ω + 47 µH THD − Total Harmonic Distortion − % THD − Total Harmonic Distortion − % 10 1 PO = 10 W 0.1 0.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 TYPICAL CHARACTERISTICS (continued) (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.) TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER (BTL) TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER (BTL) 10 Gain = 20 dB VCC = 24 V ZL = 8 Ω + 66 µH THD+N − Total Harmonic Distortion + Noise − % THD+N − Total Harmonic Distortion + Noise − % 10 1 f = 1 kHz 0.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 TYPICAL CHARACTERISTICS (continued) (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.) EFFICIENCY vs OUTPUT POWER (BTL with LC FILTER) EFFICIENCY vs OUTPUT POWER (BTL) 100 100 90 90 VCC = 12 V VCC = 12 V 80 80 VCC = 18 V 70 η − Efficiency − % η − Efficiency − % 70 60 50 40 30 40 20 Gain = 20 dB LC Filter = 22 µH + 0.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 TYPICAL CHARACTERISTICS (continued) (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.) SUPPLY CURRENT vs TOTAL OUTPUT POWER (BTL) CROSSTALK vs FREQUENCY (BTL) 3.2 −20 Gain = 20 dB ZL = 4 Ω + 33 µH 2.8 −30 −40 −50 2.0 Crosstalk − dB ICC − Supply Current − A 2.4 Gain = 20 dB VCC = 12 V VO = 1 Vrms ZL = 8 Ω + 66 µH VCC = 12 V 1.6 1.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.) TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT POWER (PBTL) GAIN/PHASE vs FREQUENCY (PBTL) 100 40 Gain = 20 dB VCC = 24 V ZL = 4 Ω + 33 µH 35 50 Phase 1 30 0 25 −50 0.1 Gain 20 −100 15 5 f = 20 Hz f = 10 kHz 0.001 0.01 0.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 TYPICAL CHARACTERISTICS (continued) (All Measurements taken at 1 kHz, unless otherwise noted. Measurements were made using the TPA3110D2 EVM which is available at ti.com.) SUPPLY CURRENT vs OUTPUT POWER (PBTL) SUPPLY RIPPLE REJECTION RATIO vs FREQUENCY (PBTL) 2.8 0 2.4 KSVR − Supply Ripple Rejection Ratio − dB Gain = 20 dB ZL = 4 Ω + 33 µH 2.6 ICC − Supply Current − A 2.2 2.0 1.8 VCC = 12 V 1.6 1.4 VCC = 18 V 1.2 1.0 0.8 0.6 0.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com DEVICE INFORMATION Gain setting via GAIN0 and GAIN1 inputs The gain of the TPA3110D2 is set by two input terminals, GAIN0 and GAIN1. The voltage slew rate of these gain terminals, along with terminals 1 and 14, must be restricted to no more than 10V/ms. For higher slew rates, use a 100kΩ resistor in series with the terminals.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 PLIMIT The voltage at pin 10 can used to limit the power to levels below that which is possible based on the supply rail. Add a resistor divider from GVDD to ground to set the voltage at the PLIMIT pin. An external reference may also be used if tighter tolerance is required. Also add a 1μF capacitor from pin 10 to ground. Vinput PLIMIT = 6.96V Pout = 11.8W PLIMIT = 3V Pout = 10W PLIMIT = 1.8V Pout = 5W TPA3110D2 Power Limit Function Vin=1.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com Table 2. PLIMIT Typical Operation Test Conditions () PLIMIT Voltage Output Power (W) Output Voltage Amplitude (VP-P) PVCC=24V, Vin=1Vrms, RL=8Ω, Gain=26dB 6.97 36.1 (thermally limited) 43 PVCC=24V, Vin=1Vrms, RL=8Ω, Gain=26dB 2.94 15 25.2 PVCC=24V, Vin=1Vrms, RL=8Ω, Gain=26dB 2.34 10 20 PVCC=24V, Vin=1Vrms, RL=8Ω, Gain=26dB 1.62 5 14 PVCC=24V, Vin=1Vrms, RL=8Ω, Gain=20dB 6.97 12.1 27.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 PBTL Select TPA3110D2 offers the feature of parallel BTL operation with two outputs of each channel connected directly. If the PBTL pin (pin 14) is tied high, the positive and negative outputs of each channel (left and right) are synchronized and in phase. To operate in this PBTL (mono) mode, apply the input signal to the RIGHT input and place the speaker between the LEFT and RIGHT outputs.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com APPLICATION INFORMATION PVCC 100 μF 0.1 μF 1000 pF 100 kΩ Control System 1 SD PVCCL FAULT PVCCL 28 1 kΩ 2 1 mF 3 1 mF 4 5 6 PVCC 10 Ω 7 1 mF 8 1 mF 9 BSPL LINP OUTPL LINN GAIN0 PGND GAIN1 OUTNL BSNL AVCC TPA3110D2 AGND BSNR GVDD OUTNR PLIMIT PGND 27 26 0.22 μF FB 25 1000 pF 24 23 1000 pF 22 21 0.22 μF 0.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 PVCC 100 μF 0.1 μF 1000 pF 100 kΩ Control System 1 SD PVCCL FAULT PVCCL 28 1 kΩ 2 3 4 5 6 AVCC PVCC 7 LINP BSPL LINN OUTPL GAIN0 PGND GAIN1 OUTNL AVCC BSNL 10 Ω 8 1 mF 9 1 mF 10 11 1 mF Audio Source 12 1 mF 13 100 kW AVCC TPA3110D2 AGND BSNR GVDD OUTNR PLIMIT PGND RINN OUTPR RINP BSPR NC PVCCR PBTL PVCCR 27 26 0.47 μF 25 24 FB 23 1000 pF 22 21 1000 pF 20 FB 19 0.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com TPA3110D2 Modulation Scheme The TPA3110D2 uses a modulation scheme that allows operation without the classic LC reconstruction filter when the amp is driving an inductive load. Each output is switching from 0 volts to the supply voltage. The OUTP and OUTN are in phase with each other with no input so that there is little or no current in the speaker.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 Also, it is important that the ferrite bead is large enough to maintain its impedance at the peak currents expected for the amplifier. Some ferrite bead manufacturers specify the bead impedance at a variety of current levels. In this case it is possible to make sure the ferrite bead maintains an adequate amount of impedance at the peak current the amplifier will see.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com When to Use an Output Filter for EMI Suppression The TPA3110D2 has been tested with a simple ferrite bead filter for a variety of applications including long speaker wires up to 125 cm and high power. The TPA3110D2 EVM passes FCC Class B specifications under these conditions using twisted speaker wires. The size and type of ferrite bead can be selected to meet application requirements.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 INPUT RESISTANCE Changing the gain setting can vary the input resistance of the amplifier from its smallest value, 9 kΩ ±20%, to the largest value, 60 kΩ ±20%. As a result, if a single capacitor is used in the input high-pass filter, the -3 dB or cutoff frequency may change when changing gain steps. Zf Ci IN Input Signal Zi The -3-dB frequency can be calculated using Equation 2. Use the ZI values given in Table 1.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com POWER SUPPLY DECOUPLING, CS The TPA3110D2 is a high-performance CMOS audio amplifier that requires adequate power supply decoupling to ensure that the output total harmonic distortion (THD) is as low as possible. Power supply decoupling also prevents oscillations for long lead lengths between the amplifier and the speaker.
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TPA3110D2 www.ti.com SLOS528D – JULY 2009 – REVISED JULY 2012 PRINTED-CIRCUIT BOARD (PCB) LAYOUT The TPA3110D2 can be used with a small, inexpensive ferrite bead output filter for most applications. However, since the Class-D switching edges are fast, it is necessary to take care when planning the layout of the printed circuit board. The following suggestions will help to meet EMC requirements.
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TPA3110D2 SLOS528D – JULY 2009 – REVISED JULY 2012 www.ti.com REVISION HISTORY Changes from Original (July 2009) to Revision A Page • Changed Changed the Stereo Class-D Amplifier with BTL Output and Single-Ended Input illustration Figure 37 Corrected the pin names. ...................................................................................................................................................
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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 TPA3110D2PWPR Package Package Pins Type Drawing SPQ HTSSOP 2000 PWP 28 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 16.4 Pack Materials-Page 1 6.9 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.2 1.8 12.0 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) TPA3110D2PWPR HTSSOP PWP 28 2000 367.0 367.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.