|
|
PDF TK2050 Data sheet ( Hoja de datos )
| Número de pieza | TK2050 | |
| Descripción | STEREO 50W (8OHM) CLASS-T DIGITAL AUDIO AMPLIFIER | |
| Fabricantes | Tripath | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TK2050 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
Tripath Technology, Inc. - Technical Information
TK2050
STEREO 50W (8Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER
DRIVER USING DIGITAL POWER PROCESSING (DPP™)
TECHNOLOGY
Technical Information
Revision 1.1 – October 2002
GENERAL DESCRIPTION
The TK2050 (TC2000/TP2050 chipset) is a 50W continuous average power per
channel, Class-T Digital Audio Power Amplifier using Tripath’s proprietary Digital
Power ProcessingTM technology. Class-T amplifiers offer both the audio fidelity of
Class-AB and the power efficiency of Class-D amplifiers. The performance of the
TK2050 is similar to the TK2051, but the TP2050 driver used in the TK2050 is a
thermally enhanced PSOP package, which provides for a more effective and
flexible heat removal solution.
APPLICATIONS
5.1-Channel DVD
Mini/Micro Component Systems
Home Theater
Stereo applications (6Ω / 8Ω)
Mono applications (4Ω)
BENEFITS
Single Supply Operation
Very High Efficiency
Wide Dynamic Range
Compact layout
FEATURES
Class-T Architecture
High Output power
35W @ 6Ω, < 1% THD+N
50W @ 8Ω, < 3% THD+N
117W @ 4Ω, < 10.0% THD+N
(paralleled outputs)
Audiophile Quality Sound
0.007% THD+N @ 30W 8Ω
0.005% THD+N @ 70W 4Ω
(paralleled outputs)
High Efficiency
92% @ 60W 8Ω
85% @ 46W 6Ω
89% @ 117W 4Ω (paralleled outputs)
Dynamic Range >100 dB
1 TK2050 – SB/1.0/8-02
1 page  
Tripath Technology, Inc. - Technical Information
TP2050 POWER STAGE PIN DESCRIPTIONS
Pin
1
35,36
15
12
7
4
14
13
6
5
16,17
10,11
8,9
2,3
29
30
31
32
21,22
33,34
25
26
27
24
28
19
23
18
20
Function
GND-SUB
VccSign
Vcc1A
Vcc1B
Vcc2A
Vcc2B
GND1A
GND1B
GND2A
GND2B
OUT1A
OUT1B
OUT2A
OUT2B
IN1A
IN1B
IN2A
IN2B
Vdd
Vss
PWRDN
TRI-STATE
FAULT
CONFIG
TH-WAR
GND-clean
IBIAS
NC
GND-Reg
Description
Substrate ground
Signal positive supply
Positive supply
Positive supply
Positive supply
Positive supply
Negative supply
Negative supply
Negative supply
Negative supply
Output half bridge 1A
Output half bridge 1B
Output half bridge 2A
Output half bridge 2B
Input of half bridge 1A
Input of half bridge 1B
Input of half bridge 2A
Input of half bridge 2B
5V regulator referenced to ground
5V regulator referenced to Vcc
Stand-by pin
Hi-Z pin
Fault output
Config input
Thermal warning output
Logic ground
Logic high voltage
Not connected
Ground for Vdd regulator
TP2050 POWER STAGE PINOUT
(Top view with heat slug up)
VCCSIGN
VCCSIGN
VSS
VSS
IN2B
IN2A
IN1B
IN1A
TH_WAR
FAULT
TRISTATE
PWRDN
CONFIG
IBIAS
VCC
VCC
GNDREG
GNDCLEAN
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
1 GNDSUB
2 OUT2B
3 OUT2B
4 VCC2B
5 GND2B
6 GND2A
7 VCC2A
8 OUT2A
9 OUT2A
10 OUT1B
11 OUT1B
12 VCC1B
13 GND1B
14 GND1A
15 VCC1A
16 OUT1A
17 OUT1A
18 NC
5 TK2050 – SB/1.0/8-02
5 Page 
Tripath Technology, Inc. - Technical Information
APPLICATION INFORMATION
TK2050 Basic Amplifier Operation
The TC2000 is a 5V CMOS signal processor that amplifies the audio input signal and converts the
audio signal to a switching pattern. This switching pattern is spread spectrum with a typical idle
switching frequency of about 700kHz. The switching patterns for the two channels are not
synchronized and the idle switching frequencies should differ by at least 40kHz to avoid increasing
the audio band noise floor. The idle frequency difference can be accomplished by offsetting the value
of CFB for each channel. Typical values of CFB are 470pF for channel 1 and 390pF for channel 2.
The TP2050 is a MOSFET output stage that level-shifts the signal processor’s 5V switching patterns
to the power supply voltages and drives the power MOSFETs. The power MOSFETs are N-channel
devices configured in full-bridges and are used to supply power to the output load. The outputs of the
power MOSFETs must be low pass filtered to remove the high frequency switching pattern. A
residual voltage from the switching pattern will remain on the speaker outputs when the
recommended output LC filter is used, but this signal is outside of the audio band and will not affect
audio performance.
Circuit Board Layout
The TK2050 is a power (high current) amplifier that operates at relatively high switching frequencies.
The output of the amplifier switches between VPP and VNN at high speeds while driving large
currents. This high-frequency digital signal is passed through an LC low-pass filter to recover the
amplified audio signal. Since the amplifier must drive the inductive LC output filter and speaker loads,
the amplifier outputs can be pulled above the supply voltage and below ground by the energy in the
output inductance. To avoid subjecting the TK2050 to potentially damaging voltage stress, it is critical
to have a good printed circuit board layout. It is recommended that Tripath’s layout and application
circuit be used for all applications and only be deviated from after careful analysis of the effects of any
changes.
The following components are important to place near their associated TC2000/TP2050 pins and are
ranked in order of layout importance, either for proper device operation or performance
considerations.
- The capacitors CHBR provide high frequency bypassing of the amplifier power supplies and
will serve to reduce spikes across the supply rails. CHBR should be kept within 1/8” (3mm)
of the VCC pins. Please note that the four VCC pins must be decoupled separately. In
addition, the voltage rating for CHBR should be 50V as this capacitor is exposed to the full
supply range. Similarly, capacitor CS (one place) should be located as close as possible to
the VCC pins on TP2050.
- CFB removes very high frequency components from the amplifier feedback signals and
lowers the output switching frequency by delaying the feedback signals. In addition, the
value of CFB is different for channel 1 and channel 2 to keep the average switching
frequency difference greater than 40kHz. This minimizes in-band audio noise.
- To minimize noise pickup and minimize THD+N, RFBC should be located as close to the
TC2000 as possible. Make sure that the routing of the high voltage feedback lines is kept
far away from the input op amps or significant noise coupling may occur. It is best to shield
the high voltage feedback lines by using a ground plane around these traces as well as the
input section.
In general, to enable placement as close to the TC2000/TP2050, and minimize PCB parasitics, the
capacitors listed above should be surface mount types.
11 TK2050 – SB/1.0/8-02
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet TK2050.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TK2050 | STEREO 50W (8OHM) CLASS-T DIGITAL AUDIO AMPLIFIER | Tripath |
| TK2051 | STEREO 50W (8ohm) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER |  Tripath Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |