Automotive eCall without back-up battery

Off-battery power supply

Off-battery power is the main circuitry used to convert power from a car battery into various power domains used by the display. It contains an EMI filter, transient and reverse polarity protections and multiple DC/DC converters.

Products

Buck converters (integrated switch)

LM61430-Q1—Automotive 3-V to 36-V, 3-A, low-noise synchronous step-down converter

TPS628502-Q1—2.7-V to 6-V, 2-A automotive step-down converter in SOT583 package

LMQ66430-Q1—Automotive 36-V, 3-A low EMI synchronous step-down converter with 1.5-μA IQ

TPS62810-Q1—Automotive 2.75-V to 6-V, 4-A step-down converter in a 2mm x 3mm wettable-flanks QFN package

LM63635-Q1—3.5-V to 32-V, 3.25-A step-down voltage converter with spread spectrum

TPS62810M—2.75-V to 6-V, 4-A step-down converter in a 2-mm x 3-mm QFN package with -55C extended temperature

Ideal diode/ORing controllers

LM74700D-Q1—Automotive, 3.2-V to 70-V, 80-μA reverse battery protection ideal diode controller

Linear & low-dropout (LDO) regulators

TPS7B81-Q1—Automotive 150-mA, off-battery (40-V), ultra-low-IQ, low-dropout voltage regulator with enable

TPS745-Q1—Automotive 500-mA, low-IQ, high-PSRR, low-dropout (LDO) voltage regulator with power good

TLV733P-Q1—Automotive 300-mA, low-IQ, low-dropout voltage regulator with enable

TPS7B7701-Q1—Automotive 300-mA, off-battery (40-V), adjustable antenna low-dropout voltage regulator

TPS737-Q1—Automotive 1-A, ultra-low-dropout voltage regulator with reverse current protection & enable

Buck controllers (external switch)

LM5146-Q1—Automotive 100-V synchronous buck DC/DC controller with wide duty-cycle range

Current & voltage sense

Some systems require the monitoring of dark current and/or voltage in a telematics system. This can be found at the input, back-up battery or around other areas of the system.

Products

Analog current-sense amplifiers

INA211-Q1—AEC-Q100, 26V, bi-directional, high-precision current sense amplifier

Modem connectivity

Interfacing with a modem varies from modem to modem. Typical interfaces can include USB, RS232, RS485, and even Ethernet.

Products

Ethernet PHYs

DP83TC813S-Q1—Automotive Low-Power, Small Footprint 100BASE-T1 Ethernet PHY (SGMII)

RF power

In order to provide a signal to the wireless connectivity modules, an low noise power supply is needed to support an antenna.

Products

Linear & low-dropout (LDO) regulators

TPS7B81-Q1—Automotive 150-mA, off-battery (40-V), ultra-low-IQ, low-dropout voltage regulator with enable

TPS745-Q1—Automotive 500-mA, low-IQ, high-PSRR, low-dropout (LDO) voltage regulator with power good

TLV733P-Q1—Automotive 300-mA, low-IQ, low-dropout voltage regulator with enable

TPS7B7701-Q1—Automotive 300-mA, off-battery (40-V), adjustable antenna low-dropout voltage regulator

TPS737-Q1—Automotive 1-A, ultra-low-dropout voltage regulator with reverse current protection & enable

Telematics system power

Power for a telematics consists of multiple DC/DCs including buck, boost, LDOs and occasionally buck-boost. The power application can have many variants depending on the number of wireless modules, processors, and audio requirements.

Products

Boost converters (integrated switch)

TPS61087-Q1—18.5-V, 3.2-A, 650-kHz, 1.2-MHz step-up DC/DC converter with forced PWM mode, AEC-Q100 qualified

TPS61040-Q1—1.8-V to 6-V input range, 400-mA boost converter, AEC-Q100 qualified

Wireless connectivity

Connectivity modules such as GPS, GLONASS, WiFi, Bluetooth, etc. are increasingly found in telematics systems. These modules support connectivity for eCalling, vehicle-to-vehicle communication, in-car WiFi, vehicle tracking and location, etc.

Products

Wi-Fi products

CC3301—SimpleLink? Wi-Fi 6 and Bluetooth? Low Energy companion IC

CC3300—SimpleLink? Wi-Fi 6 companion IC

Hands-free

In systems with integrated eCalling, audio codecs, ADCs/DACs, amplifiers and other support circuitry help enable the voice transmit and receive functionality of the cellular system.

Products

Audio CODECs

TAC5311-Q1—Automotive mono audio codec with 102-dB dynamic range ADC, 106-dB DAC, HV-input and diagnostics

TAC5212-Q1—Automotive low-power stereo audio codec with 115-dB dynamic range ADC, 120-dB DAC

Speaker amps

TAS2505-Q1—Automotive, 2-W, mono, digital or analog input Class-D amplifier with audio processing

TAS5441-Q1—22-W, analog input 1-channel automotive class-D audio amplifier with load dump and I2C diagnostics

TAS5431-Q1—8-W mono automotive Class-D audio amplifier with load dump and I2C diagnostics

Clocking for processor

When a processor is required in the system, clocking is typically required to provide support to the processor.

Products

Clock generators

CDCE6214Q1TM—Ultra-low power clock generator supporting PCIe? gen 1-5 with active low output enable

LMK3H0102—Bulk acoustic wave (BAW)-based PCIe Gen 1 to Gen 6-compliant referenceless clock generator

Application MCU

For peripheral functions within a telematics system, a microcontroller is required for application implementation.

Products

MSP430 microcontrollers

MSP430F2232—16 MHz MCU with 8KB Flash, 512B SRAM, UART/SPI/I2C, timer

System boot & monitoring

Interfacing with the telematics system or directly to the central processor or MCU, typical interfaces such as LIN and CAN help support the system boot and monitoring scheme of the system.

Products

Supervisor & reset ICs

TPS3710-Q1—Automotive, wide-VIN (18-V) voltage detector

Ambient backlight indicator

If an LED is needed for activation indication or for ambient lighting, an LED driver will also be needed.

Products

Automotive LED drivers

TPS92611-Q1—Automotive Single-channel LED driver with 300mA output, open and short detection

TLC5916-Q1—Automotive 8-bit constant-current LED sink drivers

Vehicle processor

Telematics systems are becoming more integrated with different wireless functionalities. To support these extra modems and wireless features, more processing has become a necessity. A vehicle processor can be found in a telematics system to address these extra needs.

Products

Arm-based processors

TDA4VH-Q1—Automotive SoC for sensor fusion, L2, L3 domain controllers with graphics, AI and video coprocessor

AM68—General Purpose SoC with dual core 64-bit Arm Cortex-A72, graphics, 1-port PCIe Gen3, USB3.0

AM62P—Arm?Cortex?-A53 SoC with triple display, 3D graphics, 4K video codec for HMI

Digital logic & voltage translation

Comparators, voltage supervisors, translation and other logic are included in the system for typical digital processing support.

Products

Direction-controlled voltage translators

SN74LVC1T45-Q1—Automotive Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation

Auto-direction voltage translators

TXB0104-Q1—Automotive 4-bit bidirectional voltage-level translator with auto direction sensing and +/-15kV ESD

LSF0101—Single bi-directional multi-voltage level translator

Input user interface (power protection)

If a system allows for a signal other than an automated crash indicator to initiate an emergency call, a button or other touch sensor is necessary to allow the user to make a call.

Products

Signal conditioners

AFE3010—Ground fault circuit interrupter (GFCI) with self-test and neutral-ground fault detection

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