Texas Instruments TPA3008D2 - Manuals

Texas Instruments TPA3008D2 – Manual in PDF format online.

Manuals:

Manual

Manual Texas Instruments TPA3008D2

Summary

Page 4 - FUNCTIONAL BLOCK DIAGRAM

www.ti.com Biases and References TTL Input Buffer (VCC Compl) Start-up and Protection Logic SC Detect Thermal VDDok RINP RINN RampGenerator COSC ROSC VCCok 5-V LDO AVCC AVDD AVDD VDD and PWM Mode Logic Gain Adj. Gain Control Deglitch and PWMMode Logic Gain Adj. LINP LINN Gate Drive VClamp Gen Gate D...

Page 5 - PHP PACKAGE

www.ti.com 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 48 47 46 45 44 43 42 41 40 39 38 37 1 2 3 4 5 6 7 8 9 10 11 12 BSRN PVCCR PVCCR ROUTN ROUTN PGNDR PGNDR ROUTP ROUTP PVCCR PVCCR BSRP VCLAMPR NC NC NC NC AGND COSC ROSC AGND VCLAMPL SHUTDOWN RINN RINP V2P5 LINP LINN NC...

Page 6 - TERMINAL FUNCTIONS; PIN NAME

www.ti.com 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 core AV CC 33 - High-voltage analog power supply, not connected internally to PVCCR or PVCCL 5-V Regulated output for use by int...

Page 7 - TYPICAL CHARACTERISTICS; TABLE OF GRAPHS

www.ti.com TYPICAL CHARACTERISTICS 0.01 20 20 k 100 1 k 10 k THD+N −T otal Harmonic Distortion + Noise − % V CC = 18 V, R L = 16 Gain = 21.6 dB f − Frequency − Hz 10 0.1 P O = 2.5 W P O = 0.5 W P O = 1 W 1 0.005 10 0.01 0.1 20 20 k 100 1 k 10 k P O = 2.5 W THD+N −T otal Harmonic Distortion + Noise −...

Page 11 - COMMON-MODE REJECTION RATIO

www.ti.com −70 −60 −50 −40 −30 −20 −10 0 100 1 k 10 k 20 V CC = 12 V, Gain = 15.6 dB,R L = 8 Output Referred f − Frequency − Hz CMRR − Common-Mode Rejection Ratio − dB 20 k TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 COMMON-MODE REJECTION RATIO vs FREQUENCY Figure 15. 11

Page 12 - APPLICATION INFORMATION; Figure 16. Stereo Class-D With Differential Inputs

www.ti.com APPLICATION INFORMATION 220 nF 220 nF PVCC PVCC 220 nF 220 nF PVCC PVCC 220 pF Right Differential Inputs Shutdown/Mute BSLP PVCCL PVCCL LOUTP LOUTP PGNDL PGNDL LOUTN LOUTN PVCCL PVCCL BSLN TPA3008D2 VCLAMPR SHUTDOWN V2P5 RINP LINN LINP AVDDREF NC GAIN0 GAIN1 NC NC AVDD AGND COSC ROSC AVCC...

Page 13 - Traditional Class-D Modulation Scheme; This section focuses on the class-D operation of the TPA3008D2.; Inductive Load With No Input; R losses in the load.

www.ti.com CLASS-D OPERATION Traditional Class-D Modulation Scheme 0 V −12 V +12 V Current OUTP Differential Voltage Across Load OUTN TPA3008D2 Modulation Scheme TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 APPLICATION INFORMATION (continued) This section focuses on the class-D operation of the...

Page 14 - , and the time at each voltage is half the period for; instead of 2 x V; . As the output power increases, the pulses widen, making the

www.ti.com 0 V −12 V +12 V Current OUTP OUTN Differential Voltage Across Load 0 V −12 V +12 V Current OUTP OUTN Differential Voltage Across Load Output = 0 V Output > 0 V Efficiency: LC Filter Required With the Traditional Class-D Modulation Scheme TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 200...

Page 15 - Effects of Applying a Square Wave Into a Speaker; Efficiency; When to Use an Output Filter for EMI Suppression

www.ti.com Effects of Applying a Square Wave Into a Speaker Efficiency (theoretical, %) R L R L r ds(on) 100% 8 (8 1.3) 100% 86% (1) P (total) P O Efficiency 8.5 W 0.86 9.88 W (2) Other losses P (total) (measured) P (total) (theoretical) 10.49 9.88 0.61 W (3) P (dis) 0.61 W (12 V 22 mA) 0.35 W (4) W...

Page 16 - settings, the input impedance could increase as high as 165 k; Table 1. Gain Setting; INPUT IMPEDANCE; the -3 dB or cutoff frequency changes when changing gain steps.

www.ti.com 0.1 µ F 0.1 µ F 0.47 µ F 33 µ H 33 µ H OUTP OUTN L 1 L 2 C 1 C 2 C 3 1 nF Ferrite Chip Bead OUTP OUTN Ferrite Chip Bead 1 nF Gain setting via GAIN0 and GAIN1 inputs INPUT RESISTANCE TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 APPLICATION INFORMATION (continued) Figure 19. Typical LC...

Page 17 - Power Supply Decoupling,C

www.ti.com C i IN Z i Z f Input Signal f 1 2 Z i C i (5) INPUT CAPACITOR, C I f c 1 2 Z i C i −3 dB f c (6) C i 1 2 Z i f c (7) Power Supply Decoupling,C S TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 The -3-dB frequency can be calculated using Equation 5. Use Table 1 for Z i values. In the typ...

Page 18 - Differential Input; SHUTDOWN OPERATION; and may not be used for powering any other circuitry.

www.ti.com BSN and BSP Capacitors VCLAMP Capacitors Internal Regulated 5-V Supply (AV DD ) Differential Input SHUTDOWN OPERATION USING LOW-ESR CAPACITORS TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 The full H-bridge output stages use only NMOS transistors. Therefore, they require bootstrap cap...

Page 19 - shorts. When a short circuit is detected on the

www.ti.com SHORT-CIRCUIT PROTECTION AND AUTOMATIC RECOVERY FEATURE THERMAL PROTECTION PRINTED-CIRCUIT BOARD (PCB) LAYOUT TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 The TPA3008D2 has short-circuit protection circuitry on the outputs that prevents damage to the device duringoutput-to-output sho...

Page 20 - BASIC MEASUREMENT SYSTEM

www.ti.com BASIC MEASUREMENT SYSTEM TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 This application note focuses on methods that use the basic equipment listed below: • Audio analyzer or spectrum analyzer • Digital multimeter (DMM) • Oscilloscope • Twisted-pair wires • Signal generator • Power re...

Page 21 - DIFFERENTIAL INPUT AND BTL OUTPUT; Figure 21. Audio Measurement Systems

www.ti.com Analyzer 20 Hz − 20 kHz (a) Basic Class−AB APA Signal Generator Power Supply Analyzer 20 Hz − 20 kHz R L (b) Filter-Free and Traditional Class-D Class-D APA Signal Generator Power Supply R L Low-Pass RC Filter Low-Pass RC Filter (A) (A) For efficiency measurements with filter-free class-D...

Page 22 - DC POWER LOSS; AWG Size

www.ti.com C IN Audio Power Amplifier Generator Low−Pass RC Filter C IN R GEN R GEN R IN R IN V GEN R OUT R OUT Analyzer R ANA R ANA C ANA Low−Pass RC Filter R L C ANA Twisted-Pair Wire Evaluation Module Twisted-Pair Wire CLASS-D RC LOW-PASS FILTER TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 F...

Page 23 - Table 3. Typical RC Measurement Filter Values; MEASUREMENT

www.ti.com R FILT R L R FILT C FILT V L = V IN V OUT R ANA C ANA R ANA C ANA C FILT To APA GND AP Analyzer Input RC Low-Pass Filters Load V OUT V IN R ANA R ANA R FILT 1 j O (8) f C 2 f MAX (9) C FILT 1 2 f C R FILT (10) TPA3008D2 SLOS435A – MAY 2004 – REVISED JULY 2004 Figure 23. Measurement Low-Pa...

Page 25 - PACKAGING INFORMATION; PACKAGE OPTION ADDENDUM

PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3) TPA3008D2PHP ACTIVE HTQFP PHP 48 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-4-260C-72 HR TPA3008D2PHPG4 ACTIVE HTQFP PHP 48 250 Green (RoHS & no Sb...

Page 26 - TAPE AND REEL BOX INFORMATION; PACKAGE MATERIALS INFORMATION

TAPE AND REEL BOX INFORMATION Device Package Pins Site Reel Diameter (mm) Reel Width (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W (mm) Pin1 Quadrant TPA3008D2PHPR PHP 48 SITE 60 330 16 9.6 9.6 1.5 12 16 Q2 PACKAGE MATERIALS INFORMATION www.ti.com 5-Oct-2007 Pack Materials-Page 1

Page 31 - IMPORTANT NOTICE; Products

IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.Customers should obtain the l...