SLOS638C November   2011  – June 2022 TPA2015D1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Operating Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 SpeakerGuard™ Theory of Operation
        1. 9.3.1.1 SpeakerGuard™ With Varying Input Levels
        2. 9.3.1.2 Battery Tracking SpeakerGuard™
      2. 9.3.2 Fully Differential Class-D Amplifier
        1. 9.3.2.1 Advantages of Fully Differential Amplifiers
        2. 9.3.2.2 Improved Class-D Efficiency
      3. 9.3.3 Adaptive Boost Converter
        1. 9.3.3.1 Boost Converter Overvoltage Protection
      4. 9.3.4 Operation With DACs and CODECs
      5. 9.3.5 Filter Free Operation and Ferrite Bead Filters
      6. 9.3.6 Speaker Load Limitation
      7. 9.3.7 Fixed Gain Setting
    4. 9.4 Device Functional Modes
      1. 9.4.1 Shutdown Mode
      2. 9.4.2 Battery Tracking SpeakerGuard™ Operation
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 TPA2015D1 With Differential Input Signals
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Boost Converter Inductor Selection
            1. 10.2.1.2.1.1 Inductor Equations
          2. 10.2.1.2.2 Boost Converter Capacitor Selection
          3. 10.2.1.2.3 Components Location and Selection
            1. 10.2.1.2.3.1 Decoupling Capacitors
            2. 10.2.1.2.3.2 Input Capacitors
        3. 10.2.1.3 Application Curves
      2. 10.2.2 TPA2015D1 with Single-Ended Input Signals
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curves
  11. 11Power Supply Recommendations
    1. 11.1 Power Supply Decoupling Capacitors
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Component Placement
      2. 12.1.2 Trace Width
      3. 12.1.3 Pad Size
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Device Nomenclature
        1. 13.1.1.1 TPA2015D1 Glossary
        2. 13.1.1.2 Boost Terms
    2. 13.2 Community Resources
    3. 13.3 Trademarks
  14. 14Mechanical, Packaging, and Orderable Information
    1. 14.1 Package Option Addendum
      1. 14.1.1 Packaging Information
      2. 14.1.2 Tape and Reel Information

7.6 Operating Characteristics

VBAT = 3.6 V, TA = 25°C, RL = 8 Ω + 33 μH (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
BOOST CONVERTER
V(PVOUT)Boost converter output voltage rangeI(BOOST) = 0 mA5.46V
I(BOOST) = 700 mA5.4
ILBoost converter input current limitPower supply current1500mA
Boost converter start-up current limit450mA
ηBoost converter efficiencyEND = 0 V, I(PVOUT) = 100 mA constant88%
fBOOSTBoost converter frequency1.2MHz
CLASS-D AMPLIFIER
POOutput powerTHD = 1%, VBAT = 2.5 V, f = 1 kHz1200mW
THD = 1%, VBAT = 3 V, f = 1 kHz1500
THD = 1%, VBAT = 3.6 V, f = 1 kHz1700
VOOutput peak voltageTHD = 1%, VBAT = 3 V, f = 1 kHz,
6 dB crest factor sine burst, no clipping		5.2V
AVClosed-loop voltage gainGAIN < 0.25 × VBAT6dB
0.4 × VBAT < GAIN < 0.6 × VBAT (or float)15.5
GAIN > 0.75 × VBAT20
ΔAVGain accuracy–0.50.5dB
VOOSOutput offset voltage10mV
RINInput impedance (per input pin)AV = 6 dB27.8kΩ
AV = 15.5 dB14.9
AV = 20 dB10.1
Input impedance in shutdown (per input pin)END = 0 V88.4kΩ
ZOOutput impedance in shutdownEND = 0 V2kΩ
fCLASS-DSwitching frequency560600640kHz
ENNoise output voltageA-weighted, GAIN = 6 dB24.8μVRMS
A-weighted, GAIN = 15.5 dB33.4
A-weighted, GAIN = 20 dB42.4
THD+NTotal harmonic distortion plus noise(1)PO = 100 mW, f = 1 kHz0.06%
PO = 500 mW, f = 1 kHz0.07%
AC PSRRAC-Power supply ripple rejection (output referred)200 mVPP ripple, f = 217 Hz75dB
200 mVPP ripple, f = 4 kHz70
Audio frequency passband ripplefAUDIO = 20 Hz, CIN = 1 μF–0.2–0.10dB
fAUDIO = 16 kHz, CIN = 1 μF–0.2–0.10
AUTOMATIC GAIN CONTROL
AGC gain range020dB
AGC gain step size0.5dB
AGC attack time (gain decrease)0.026ms/dB
AGC release time (gain increase)1600ms/dB
Limiter threshold voltageVBAT > inflection point6.15V
VBAT vs. Limiter slopeVBAT < inflection point3V/V
AGC inflection pointAGC option 1, R(AGC) = 39 kΩ (±5%)3.55V
AGC option 2, R(AGC) = 27 kΩ (±5%)3.78
AGC option 3, R(AGC) = 18 kΩ (±5%)3.96
(1) A-weighted