Semiconductor New Aureus™ DSPs and
Software Library Provide Unmatched Capacity for Customization
and Differentiation of High-Quality Automotive
Applications
TI's DA7xx DSPs Provide 50
Percent More Performance For the Same Cost as Previous
Generation Devices
Continuing to drive audiophile
levels of sound quality to affordable consumer price points,
TI recently introduced the next generation in its Aureus™ family of high-performance
audio digital signal processors (DSPs) for automotive
navigation/multimedia systems requiring multi-channel
decoding.
With 50 percent performance improvement at
the same price point as the previous generation of TI's Aureus
family of audio DSPs, the 300 MHz TMS320DA710 and 250 MHz
TMS320DA708 deliver one of the industry's most versatile,
cost-effective DSPs and Development Environment for high
performance, high-quality multi-channel audio applications.
These devices are also ideal for applications requiring audio
decoding and simultaneous high-speed encoding, such as
automotive jukeboxes.
Features:
| • |
Better quality reverb algorithms for more
life-like simulations |
| • |
Advanced equalization techniques for better
acoustic correction |
| • |
True dual-zone decoding and post-processing for
multi-zone applications |
| • |
Simultaneous multi-channel audio decode and up to
16 times real-time encode (“CD ripping”) for server
applications, eliminating the need for a separate
encoder and associated buffer
memory |
Integrated Power Management
IC Provides Three Step-Down
Converters
The TPS65020 is an integrated Power Management
IC for applications powered by one Li-Ion or Li-Polymer cell,
and which require multiple power rails. The TPS65020 provides
three highly efficient, step-down converters targeted at
providing the core voltage, peripheral, I/O and memory rails
in a processor based system. All converters enter a low-power
mode at light load for maximum efficiency across the widest
possible range of load currents. The TPS65020 also integrates
two 50-mA LDO voltage regulators, which are enabled with an
external input pin. The serial interface is used for dynamic
voltage scaling of the core voltage, masking interrupts, or
for dis/enabling and setting the LDO output voltages. The
interface is compatible with the Fast/Standard mode
I2C™ specification, allowing transfers at up to 400
kHz.
Features:
| • |
1.2 A, 97% Efficient Step-Down Converter for
System Voltage (VDCDC1) |
| • |
1 A, Up to 95% Efficient Step-Down Converter for
Memory Voltage (VDCDC2) |
| • |
800 mA, 90% Efficient Step-Down Converter for
Processor Core (VDCDC3) |
| • |
Dynamic Voltage Management for Processor Core
|
| • |
Battery Backup Functionality
|
High-Side Current Sense
Monitor for Powertrain and Body
Applications
The INA19X family of voltage-output, high-side
current sense monitors from TI’s Burr-Brown product line is
now available as a high-accuracy solution for current
measurement applications that require automotive temperatures.
The INA19x solves the very common and often challenging
problem of measuring high-side current, especially when
common-mode dynamics include (or go more negative than)
ground. Common-mode voltage range for the INA19x is
independent of the supply voltage. Single supply voltage range
is from +2.7 V to +18 V.
Features:
| • |
High accuracy (3% maximum error over temperature)
|
| • |
Wide bandwidth (400kHz) |
| • |
Low quiescent current (700uA maximum per channel)
|
| • |
Specification over a -40°C to +125°C temperature
range |
| • |
Three output voltage transfer functions (20V/V,
50V/V and 100V/V) |
Automotive Catalog Cap-Free
NMOS 250-mA Low Dropout Regulator with Reverse Current
Protection
The TPS732xx low-dropout (LDO) voltage regulator
uses a new topology: an NMOS pass element in a
voltage-follower configuration. This topology is stable using
output capacitors with low ESR, and even allows operation
without a capacitor. It also provides high reverse blockage
(low reverse current) and ground pin current that is nearly
constant over all values of output current.
The
TPS732xx uses an advanced BiCMOS process to yield high
precision while delivering low dropout voltages and low ground
pin current. The extremely low output noise (30
µVRMS with 0.1 µF CNR) is ideal for
powering VCOs.
Features:
| • |
Qualification for Automotive Applications in
Accordance With AEC-Q100 |
| • |
Customer-Specific Configuration Control Can Be
Supported Along With Major-Change Approval |
| • |
Stable with No Output Capacitor or Any Value or
Type of Capacitor |
| • |
Input Voltage Range: 1.7 V to 5.5 V |
| • |
Ultralow Dropout Voltage: 40 mV Typ at 250 mA
|
| • |
Thermal Shutdown and Specified Min/Max Current
Limit Protection |
New LDO Family Provides
Excellent AC Performance, Very Low Ground Current at
Automotive Temperature
The TPS799xx family of low-dropout (LDO)
low-power linear regulators offer excellent AC performance
with very low ground current. High power-supply rejection
ratio (PSRR), low noise, fast start-up, and excellent line and
load transient response are provided while consuming a very
low 40µA (typical) ground current. The TPS799xx is stable with
ceramic capacitors and uses an advanced BiCMOS fabrication
process to yield dropout voltage typically 110 mV at 200 mA
output. The TPS799xx uses a precision voltage reference and
feedback loop to achieve overall accuracy of 2% over all load,
line, process, and temperature variations. It is fully
specified from -40°C to +125°C.
Features:
| • |
200mA Low Dropout Regulator with EN |
| • |
Low IQ: 40 µA |
| • |
Available in Multiple Output Voltage Versions
(Additional Outputs Available Using Innovative Factory
EEPROM Programming) |
| • |
High PSRR: 66 dB at 1 kHz |
| • |
Low Profile ThinSOT-23, Wafer Chip-Scale (WCSP),
and 2-mm x 2-mm SON-6 Packages
|
Operate at Extremely Low
Power Levels with New LDO Regulator
The
TPS715xx low-dropout (LDO) voltage regulator
offers the benefits of high input voltage, low-dropout
voltage, low-power operation, and miniaturized packaging. The
devices, which operate over an input range of 2.5 V to 24 V,
are stable with any capacitor (=0.47 µF). The low dropout
voltage and low quiescent current allow operations at
extremely low power levels. Therefore, the devices are ideal
for powering battery management ICs. Specifically, since the
devices are enabled as soon as the applied voltage reaches the
minimum input voltage, the output is quickly available to
power continuously operating battery charging ICs.
The
usual PNP pass transistor has been replaced by a PMOS pass
element which behaves as a low-value resistor, the low dropout
voltage, typically 415 mV at 50 mA of load current, is
directly proportional to the load current. The low quiescent
current (3.2 µA typically) is stable over the entire range of
output load current (0 mA to 50 mA).
Features:
| • |
Designed to Support MSP430 Families:
| - |
1.9 V version ensured to be higher than
minimum VIN of 1.8 V
|
| - |
2.3 V version ensured to meet 2.2 V minimum
VIN for FLASH on
MSP430F2xx
|
| - |
3.45 V version ensured to be lower than
maximum VIN of 3.6 V
|
| - |
Wide variety of fixed output voltage
options to match VIN to the minimum
required for desired MSP430
speed
| |
| • |
5-Pin SC70/SOT-323 (DCK) Package |
| • |
-40°C to +125°C Specified Junction Temperature
Range |
Sensor Products
Microfused Silicon Strain
Gage (MSG), Hermetic Pressure Sensing
 The MSG strain gauge transducer
provides a linear voltage output directly proportional to
applied pressure making it ideal for automotive applications
such as brake pressure, vehicle stability systems,
transmission, and occupant weight force sensing. Integral
signal conditioning electronics which incorporate a custom
designed integrated circuit provide an accurate, stable signal
over a wide operating temperature range (-40°C to +140°C), as
well as temperature compensation. The sensor design is
inherently hermetic, making it compatible with almost any
media.
Features:
| • |
Sensing technology (Silicon MEMs strain gauge
elements glass–bonded to a stainless steel diaphragm)
|
| • |
Inherent hermetic structure |
| • |
Permanent calibration after assembly |
| • |
Adaptable to pressure ranges up to 30,000psi
|
| • |
Temperature output can be added
|
Automotive Articles and Application
Reports
Cars Sag Under Weighty Wiring
Rick DeMeis (Texas Instruments) /
Automotive Design Online
October 24, 2005
The
typical electronics content of cars is burgeoning; estimates
are that the electronics and software account for 40 percent
of a vehicle's value. Design engineers face increasing
functionality requirements for such automotive systems as
infotainment and multimedia, engine and emissions controls,
and safety systems ranging from smart airbags to stability
control. For these developers, network bus architectures that
reduce discrete, dedicated wiring runs, while facilitating the
addition of features, can be a godsend-provided they are
implemented wisely.
Understanding LDO
Dropout
Michael Day (Texas
Instruments)
Application Report
Not all low
dropout (LDO) linear regulator data sheets provide the voltage
dropout information needed for all applications. This
application report shows a designer how to use an LDO data
sheet’s specified dropout performance to determine the dropout
voltage at other operating
conditions.
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