Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

TPA2029D1YZFR Folha de dados(PDF) 11 Page - Texas Instruments

Click here to check the latest version.
Nome de Peças TPA2029D1YZFR
Descrição Electrónicos  3-W Mono Class-D Audio Amplifier With SmartGain??AGC/DRC
Download  17 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

TPA2029D1YZFR Folha de dados(HTML) 11 Page - Texas Instruments

Back Button TPA2029D1YZFR Datasheet HTML 7Page - Texas Instruments TPA2029D1YZFR Datasheet HTML 8Page - Texas Instruments TPA2029D1YZFR Datasheet HTML 9Page - Texas Instruments TPA2029D1YZFR Datasheet HTML 10Page - Texas Instruments TPA2029D1YZFR Datasheet HTML 11Page - Texas Instruments TPA2029D1YZFR Datasheet HTML 12Page - Texas Instruments TPA2029D1YZFR Datasheet HTML 13Page - Texas Instruments TPA2029D1YZFR Datasheet HTML 14Page - Texas Instruments TPA2029D1YZFR Datasheet HTML 15Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 17 page
background image
C
I
I
1
f =
(2
R
C )
p ´
´
I
I
C
1
C =
(2
R
f )
p ´
´
o
JA
1
1
θ
105 C/W
Derating Factor
0.0095
=
=
=
A
J
JA DMAX
T Max = T Max - θ P
= 150 - 105 (0.4) = 108 C
°
TPA2029D1
www.ti.com
SLOS661A – DECEMBER 2011 – REVISED APRIL 2012
DECOUPLING CAPACITOR (CS)
The TPA2029D1 is a high-performance Class-D audio amplifier that requires adequate power supply decoupling
to ensure the efficiency is high and total harmonic distortion (THD) is low. For higher frequency transients,
spikes, or digital hash on the line, a good low equivalent-series-resistance (ESR) 1-
μF ceramic capacitor
(typically) placed as close as possible to the device PVDD lead works best. Placing this decoupling capacitor
close to the TPA2029D1 is important for the efficiency of the Class-D amplifier, because any resistance or
inductance in the trace between the device and the capacitor can cause a loss in efficiency. For filtering lower-
frequency noise signals, a 4.7
μF or greater capacitor placed near the audio power amplifier would also help, but
it is not required in most applications because of the high PSRR of this device.
INPUT CAPACITORS (CI)
The input capacitors and input resistors form a high-pass filter with the corner frequency, fC, determined in
Equation 1.
(1)
The value of the input capacitor is important to consider as it directly affects the bass (low frequency)
performance of the circuit. Speakers in wireless phones cannot usually respond well to low frequencies, so the
corner frequency can be set to block low frequencies in this application. Not using input capacitors can increase
output offset. Equation 2 is used to solve for the input coupling capacitance. If the corner frequency is within the
audio band, the capacitors should have a tolerance of ±10% or better, because any mismatch in capacitance
causes an impedance mismatch at the corner frequency and below.
(2)
COMPONENT LOCATION
Place all the external components very close to the TPA2029D1. Placing the decoupling capacitor, CS, close to
the TPA2029D1 is important for the efficiency of the Class-D amplifier. Any resistance or inductance in the trace
between the device and the capacitor can cause a loss in efficiency.
EFFICIENCY AND THERMAL INFORMATION
The maximum ambient temperature depends on the heat-sinking ability of the PCB system. The derating factor
for the packages are shown in the dissipation rating table. Converting this to
θJA for the WCSP package:
(3)
Given
θJA of 100°C/W, the maximum allowable junction temperature of 150°C, and the maximum internal
dissipation of 0.4 W for 3 W output power into 4-
Ω load, 5-V supply, from Figure 7, the maximum ambient
temperature can be calculated with the following equation.
(4)
Equation 4 shows that the calculated maximum ambient temperature is 108°C at maximum power dissipation
with a 5-V supply and 4-
Ω a load. The TPA2029D1 is designed with thermal protection that turns the device off
when the junction temperature surpasses 150°C to prevent damage to the IC. Also, using speakers more
resistive than 8-
Ω dramatically increases the thermal performance by reducing the output current and increasing
the efficiency of the amplifier.
OPERATION WITH DACS AND CODECS
In using Class-D amplifiers with CODECs and DACs, sometimes there is an increase in the output noise floor
from the audio amplifier. This occurs when mixing of the output frequencies of the CODEC/DAC mix with the
switching frequencies of the audio amplifier input stage. The noise increase can be solved by placing a low-pass
filter between the CODEC/DAC and audio amplifier. This filters off the high frequencies that cause the problem
and allow proper performance. See the functional block diagram.
Copyright © 2011–2012, Texas Instruments Incorporated
Submit Documentation Feedback
11
Product Folder Link(s): TPA2029D1


Nº de peça semelhante - TPA2029D1YZFR

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Comchip Technology
TPA2029NND03-HF COMCHIP-TPA2029NND03-HF Datasheet
150Kb / 5P
   General Purpose Transistor
TPA2029NND03Q-HF COMCHIP-TPA2029NND03Q-HF Datasheet
150Kb / 5P
   General Purpose Transistor
TPA2029NND03R-HF COMCHIP-TPA2029NND03R-HF Datasheet
150Kb / 5P
   General Purpose Transistor
TPA2029NND03S-HF COMCHIP-TPA2029NND03S-HF Datasheet
150Kb / 5P
   General Purpose Transistor
More results

Descrição semelhante - TPA2029D1YZFR

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Texas Instruments
TPA2018D1 TI-TPA2018D1 Datasheet
1Mb / 36P
[Old version datasheet]   3-W Mono Class-D Audio Amplifier with SmartGain AGC/DRC
TPA2028D1 TI1-TPA2028D1_17 Datasheet
2Mb / 43P
[Old version datasheet]   3-W Mono Class-D Audio Amplifier With Fast Gain Ramp SmartGain AGC/DRC
TPA2028D1 TI-TPA2028D1_15 Datasheet
2Mb / 39P
[Old version datasheet]   3-W Mono Class-D Audio Amplifier with Fast Gain Ramp SmartGain??AGC/DRC
TPA2028D1 TI-TPA2028D1 Datasheet
1Mb / 35P
[Old version datasheet]   3-W Mono Class-D Audio Amplifier with Fast Gain Ramp SmartGain??AGC/DRC
TPA2028D1 TI-TPA2028D1_10 Datasheet
1Mb / 37P
[Old version datasheet]   3-W Mono Class-D Audio Amplifier with Fast Gain Ramp SmartGain??AGC/DRC
TPA2026D2 TI-TPA2026D2_15 Datasheet
1Mb / 39P
[Old version datasheet]   3.2-W/Ch Stereo Class-D Audio Amplifier with Fast Gain Ramp SmartGain??AGC/DRC
TPA2026D2 TI-TPA2026D2 Datasheet
726Kb / 36P
[Old version datasheet]   3.2-W/Ch Stereo Class-D Audio Amplifier with Fast Gain Ramp SmartGain??AGC/DRC
logo
Anpec Electronics Corop...
APA2011 ANPEC-APA2011 Datasheet
684Kb / 27P
   2.8W Mono Class D Audio Power Amplifier with AGC
logo
Eutech Microelectronics...
EUA2011 EUTECH-EUA2011 Datasheet
570Kb / 16P
   3-W Mono Filterless Class-D Audio Power Amplifier
logo
NXP Semiconductors
SA58672 NXP-SA58672 Datasheet
192Kb / 27P
   3.0 W mono class-D audio amplifier
Rev. 04-8 June 2009
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com