TPS65311-Q1 Series
Automotive 4V to 40V, 5 regulated output Power Management IC for automotive safety applications
Manufacturer: Texas Instruments
Catalog
Automotive 4V to 40V, 5 regulated output Power Management IC for automotive safety applications
Key Features
• Qualified for Automotive ApplicationsAEC-Q100 Test Guidance With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureDevice HBM ESD Classification Level H1BDevice CDM ESD Classification Level C4BInput Voltage Range: 4 V to 40 V, Transients up to 60 V; 80 V When Using External PMOS-FETSingle-Output Synchronous-Buck ControllerPeak Gate-Drive Current 0.6 A490-kHz Fixed Switching FrequencyPseudo Random Frequency-Hopping Spread Spectrum or Triangular ModeDual-Synchronous Buck ConverterDesigned for Output Currents up to 2 AOut of Phase SwitchingSwitching Frequency: 2.45 MHzAdjustable 350-mA Linear RegulatorAdjustable Asynchronous-Boost Converter1-A Integrated SwitchSwitching Frequency: 2.45 MHzSoft-Start Feature for All Regulator OutputsIndependent Voltage MonitoringUndervoltage (UV) Detection and Overvoltage (OV) ProtectionShort Circuit, Overcurrent, and Thermal Protection on all supply output railsSerial-Peripheral Interface (SPI) for Control and DiagnosticIntegrated Window Watchdog (WD)Reference Voltage OutputHigh-Side (HS) Driver for Use with External PMOS-FET for driving an LEDInput for External Temperature Sensor for Shutdown at TA< –40°CThermally Enhanced Packages With Exposed Thermal Pad56-Pin VQFN (RVJ) or 56-Pin VQFNP (RWE)Qualified for Automotive ApplicationsAEC-Q100 Test Guidance With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureDevice HBM ESD Classification Level H1BDevice CDM ESD Classification Level C4BInput Voltage Range: 4 V to 40 V, Transients up to 60 V; 80 V When Using External PMOS-FETSingle-Output Synchronous-Buck ControllerPeak Gate-Drive Current 0.6 A490-kHz Fixed Switching FrequencyPseudo Random Frequency-Hopping Spread Spectrum or Triangular ModeDual-Synchronous Buck ConverterDesigned for Output Currents up to 2 AOut of Phase SwitchingSwitching Frequency: 2.45 MHzAdjustable 350-mA Linear RegulatorAdjustable Asynchronous-Boost Converter1-A Integrated SwitchSwitching Frequency: 2.45 MHzSoft-Start Feature for All Regulator OutputsIndependent Voltage MonitoringUndervoltage (UV) Detection and Overvoltage (OV) ProtectionShort Circuit, Overcurrent, and Thermal Protection on all supply output railsSerial-Peripheral Interface (SPI) for Control and DiagnosticIntegrated Window Watchdog (WD)Reference Voltage OutputHigh-Side (HS) Driver for Use with External PMOS-FET for driving an LEDInput for External Temperature Sensor for Shutdown at TA< –40°CThermally Enhanced Packages With Exposed Thermal Pad56-Pin VQFN (RVJ) or 56-Pin VQFNP (RWE)
Description
AI
The TPS65311-Q1 device is a power-management IC (PMIC), meeting the requirements of digital-signal-processor (DSP) controlled-automotive systems (for example, advanced driver-assistance systems). With the integration of commonly used supply rails and features, the TPS65311-Q1 device significantly reduces board space and system costs.
The device is capable of providing stable output voltages to the application, including a typical 5-V CAN-supply, from a varying input power supply (such as an automotive car battery) from 4 V to 40 V. The device includes one synchronous buck controller as a pre-regulator that offers flexible output power to the application. For post-regulation, the device includes two synchronous buck and one asynchronous boost converter, working at a switching frequency of 2.45 MHz to allow for a smaller inductor which requires less board space. The two buck converters also offer internal loop compensation which eliminates the need for external compensation components. Furthermore, the device includes a low-noise linear regulator.
To help support system safety, the device includes voltage monitoring on all supply rails and a window-watchdog to monitor the MCU and DSP. Other features include a high-side driver which drives a warning-lamp LED, a reference voltage which is used as ADC reference in the MCU, DSP, and a shutdown comparator which, in combination with external NTC-resistor, switches off the device at too-low ambient temperature.
The TPS65311-Q1 device is a power-management IC (PMIC), meeting the requirements of digital-signal-processor (DSP) controlled-automotive systems (for example, advanced driver-assistance systems). With the integration of commonly used supply rails and features, the TPS65311-Q1 device significantly reduces board space and system costs.
The device is capable of providing stable output voltages to the application, including a typical 5-V CAN-supply, from a varying input power supply (such as an automotive car battery) from 4 V to 40 V. The device includes one synchronous buck controller as a pre-regulator that offers flexible output power to the application. For post-regulation, the device includes two synchronous buck and one asynchronous boost converter, working at a switching frequency of 2.45 MHz to allow for a smaller inductor which requires less board space. The two buck converters also offer internal loop compensation which eliminates the need for external compensation components. Furthermore, the device includes a low-noise linear regulator.
To help support system safety, the device includes voltage monitoring on all supply rails and a window-watchdog to monitor the MCU and DSP. Other features include a high-side driver which drives a warning-lamp LED, a reference voltage which is used as ADC reference in the MCU, DSP, and a shutdown comparator which, in combination with external NTC-resistor, switches off the device at too-low ambient temperature.
