|
|
PDF TPS4100 Data sheet ( Hoja de datos )
| Número de pieza | TPS4100 | |
| Descripción | FOUR CHANNEL BRIDGED OUTPUT POWER STAGE | |
| Fabricantes | Tripath | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TPS4100 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
Tripath Technology, Inc. – Preliminary Technical Information
TPS4100
FOUR CHANNEL BRIDGED OUTPUT POWER STAGE
Revision 2.5 - February 2005
GENERAL DESCRIPTION
The TPS4100 is a 4 channel bridged (16 power transistors) output power stage. The TPS4100
accepts 5V CMOS logic signals from a Class-T processor, such as TCD6001, to create a high
fidelity 4 channel audio amplifier. The TPS4100 has been designed specifically for automotive head
unit applications operating on a single 10-26V supply.
APPLICATIONS
Automotive Head Units and Trunk
Amplifiers
DVD Receivers
Multimedia Speaker Systems
BENEFITS
4-channel output stage – with integrated
driver and FETs - in a single 32-pin SSIP
package
Low external component count
Single-supply operation
FEATURES
Four H-Bridge outputs
High Efficiency
High Power @25.0V
100Wsat. sq. wave @ 4Ω
High Efficiency
88% @ 100W 4Ω
AM “Low EMI” mode with connection to
appropriate Class-T controller
Mates seamlessly with TCD6001 Digital Input
Class-T controller
Mute and Stand-By function
Protection Modes:
Output Short to VPP and Ground
Output Short across Load
Load Dump Protection
Over-/Under-Voltage Protection
Over-current Protection
Over-temperature Protection
Fortuitous Open Ground
1 TPS4100 – KL/Rev. 2.5/02.05
Free Datasheet http://www.Datasheet4U.com
1 page  
Tripath Technology, Inc. – Preliminary Technical Information
TPS4100 Pinout
PIN NAME/FUNCTION TYPE DESCRIPTION
1
2, 4, 6, 8
3, 5, 7, 9
10
11
SLEEPB
Y1, Y2, Y3, Y4
Y1B, Y2B, Y3B, Y4B
MUTEB
AM
INPUT (L) Logic input, ACTIVE LOW. Setting SLEEP to low puts the TPS4100 in sleep
mode. Input range is 0 to 5V with 3.3V compliant inputs.
INPUT (L) Non-inverted switching modulator inputs.
INPUT (L) Inverted switching modulator inputs.
INPUT (L) Logic Input, ACTIVE LOW. Setting MUTE to low puts the device in mute mode.
Typically driven by external power supply or microcontroller. Input range is 0 to
5V with 3.3V compliant inputs.
INPUT (L) Logic input, ACTIVE HIGH. Enables Analog Mode operation. Typically driven
by Tripath controller. Input range is 0 to 5V with 3.3V compliant inputs.
12
12
13, 14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
5VGEN
HMUTEB
AGND
CPUMP
OUT4P
VPP4
PGND
OUT4N
OUT3N
VPP3
OUT3P
FAULT
OUT2P
VPP2
OUT2N
OUT1N
PGND
VPP1
OUT1P
DCAP
PGND
OUTPUT On chip 5V regulator bypass capacitor connection
OUTPUT (L) Logic output, ACTIVE LOW. HMUTEB low indicates TPS4100 is in mute mode
GND Analog ground
OUTPUT Charge pump output capacitor
OUTPUT Positive Output Channel 4
POWER Positive Supply Voltage Channel 4
GND Power Ground for Outputs 3 and 4
OUTPUT Negative Output Channel 4
OUTPUT Negative Output Channel 3
POWER Positive Supply Voltage Channel 3
OUTPUT Positive Output Channel 3
OUTPUT (L) Open Drain Logic Output, ACTIVE HIGH. FAULT high indicates fault condition.
OUTPUT Positive Output Channel 2
POWER Positive Supply Voltage Channel 2
OUTPUT Negative Output Channel 2
OUTPUT Negative Output Channel 1
GND Power Ground for Outputs 1 and 2
POWER Positive Supply Voltage Channel 1
OUTPUT Positive Output Channel 1
OUTPUT Oscillator output for driving external charge pump circuit
GND Power Ground
5 TPS4100 – KL/Rev. 2.5/02.05
Free Datasheet http://www.Datasheet4U.com
5 Page 
Tripath Technology, Inc. – Preliminary Technical Information
FAULT PIN
The FAULT pin is a logic output that indicates various fault conditions within the device. These conditions
include: over-voltage, under-voltage, over-current at any output, low charge pump voltage, low 5V
regulator voltage, and over-temperature (junction temperature greater than approximately 160°C).
The FAULT pin is an open drain output. The recommended pull-up to an external 3.3V or 5V supply is
51kΩ. Alternatively, this pin can be pulled up to VPP through a 51kΩ resistor. A logic high on this pin
indicates a fault condition. This pin has a 1mA maximum sink current capability.
CIRCUIT BOARD LAYOUT
When used in conjunction with a Class T controller the TPS4100 is a power (high current) amplifier that
operates at relatively high switching frequencies. Therefore, amplifier outputs switch between the supply
voltage and ground at high speeds while driving high 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 TPS4100 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. Please refer to the TPS4100
evaluation board document, EB-TPS4100, available on the Tripath website, at www.tripath.com.
The following components are important to place near either their associated TPS4100 pins. The
recommendations are ranked in order of layout importance, either for proper device operation or
performance considerations.
- The capacitors, CBR, provide high frequency bypassing of the amplifier power supplies and will
serve to reduce spikes and modulation of the power supply rails. Please note that bypassing
requires a combination of capacitors for adequate stabilization.
- The output diodes, DO, are used to minimize overshoots/undershoots on the output node.
Improper routing of these diodes will render them useless due to PCB trace inductance. Thus,
these components must be located very close to the output pins with the “other side of the
diode” routed directly to the appropriate VPP or PGND pin.
The capacitors, CS, provide high frequency bypassing of the amplifier power supplies. Please note that
bypassing requires a combination of capacitors for adequate stabilization.
OUTPUT FILTER DESIGN
One advantage of Tripath amplifiers over PWM solutions is the ability to use higher-cutoff-frequency
filters. This means any load-dependent peaking/droop in the 20kHz audio band potentially caused by the
filter can be made negligible. This is especially important for applications where the user may select a 4Ω
or 8Ω speaker. Furthermore, speakers are not purely resistive loads and the impedance they present
changes over frequency and from speaker model to speaker model.
The core material of the output filter inductor has an effect on the distortion levels produced by a
TPS4100 amplifier. Tripath recommends low-mu type-2 iron powder cores because of their low loss and
high linearity or high current capability bobbin types that will not saturate at peak currents below 9A.
Recently, there have been a number of dual inductors designed specifically for bridged output switching
amplifiers. These dual inductors are two inductors shielded by a common ferrite shield. They may be
11 TPS4100 – KL/Rev. 2.5/02.05
Free Datasheet http://www.Datasheet4U.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TPS4100.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TPS4100 | FOUR CHANNEL BRIDGED OUTPUT POWER STAGE | Tripath |
| 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 |