Product details


Regulated outputs (#) 5 Vin (Min) (V) 4 Vin (Max) (V) 40 Iout (Max) (A) 3 Step-down DC/DC controller 1 Step-down DC/DC converter 2 Step-up DC/DC controller 0 Step-up DC/DC converter 1 LDO 1 Iq (Typ) (mA) 0.044 Features Comm Control, Power Sequencing Operating temperature range (C) -40 to 125 Rating Automotive Processor name Generic Processor supplier Generic Configurability Factory programmable open-in-new Find other Multi-channel ICs (PMIC)

Package | Pins | Size

VQFN (RVJ) 56 64 mm² 8 x 8 open-in-new Find other Multi-channel ICs (PMIC)


  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H1B
    • Device CDM ESD Classification Level C4B
  • Input Voltage Range: 4 V to 40 V, Transients up to 60 V; 80 V When Using External PMOS-FET
  • Single-Output Synchronous-Buck Controller
    • Peak Gate-Drive Current 0.6 A
    • 490-kHz Fixed Switching Frequency
    • Pseudo Random Frequency-Hopping Spread Spectrum or Triangular Mode
  • Dual-Synchronous Buck Converter
    • Designed for Output Currents up to 2 A
    • Out of Phase Switching
    • Switching Frequency: 2.45 MHz
  • Adjustable 350-mA Linear Regulator
  • Adjustable Asynchronous-Boost Converter
    • 1-A Integrated Switch
    • Switching Frequency: 2.45 MHz
  • Soft-Start Feature for All Regulator Outputs
  • Independent Voltage Monitoring
  • Undervoltage (UV) Detection and Overvoltage (OV) Protection
  • Short Circuit, Overcurrent, and Thermal Protection on all supply output rails
  • Serial-Peripheral Interface (SPI) for Control and Diagnostic
  • Integrated Window Watchdog (WD)
  • Reference Voltage Output
  • High-Side (HS) Driver for Use with External PMOS-FET for driving an LED
  • Input for External Temperature Sensor for Shutdown at TA < –40°C
  • Thermally Enhanced Packages With Exposed Thermal Pad
    • 56-Pin VQFN (RVJ) or 56-Pin VQFNP (RWE)

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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.

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Technical documentation

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Type Title Date
* Datasheet TPS65311-Q1 High-Voltage Power-Management IC for Automotive Applications datasheet (Rev. C) Oct. 04, 2017
Application notes TPS65310A-Q1 and TPS65311-Q1 BUCK1 Compensation Resistor Limitation Jul. 21, 2017
Application notes TPS65311-Q1/TPS65310A-Q1 Monitoring and Diagnostic Mechanism Definitions Aug. 10, 2016
Application notes TPS65311-Q1 BUCK1 Controller DCR Current Sensing May 23, 2016
Application notes TPS65311-Q1/TPS65310A-Q1 GPFET Soft Start Using a Capacitor May 23, 2016
White papers Power Management IC (PMIC) Guide for Automotive (Rev. A) Oct. 29, 2014
Technical articles Don’t underestimate the power of an LDO Oct. 19, 2013
Technical articles How to optimize your DSP power budget Oct. 03, 2013
Technical articles "X" Marks the spot - 7 Treasures in a pirate engineer's treasure chest Sep. 19, 2013
Technical articles Power Tips: How to be discrete Sep. 17, 2013
User guides TPS65310AEVM and TPS65311EVM User's Guide Jun. 26, 2013

Design & development

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Hardware development

document-generic User guide

The TPS65310AEVM evaluation modules (EVM) helps engineers evaluate the operation and performance of the TPS65310A-Q1 power supply IC for safety applications. The EVM contains the TPS65310A-Q1 and circuitry for basic operation. It has an on board USB-to-SPI interface but can also run without it or (...)

  • Battery Voltage VBAT: 4.8 to 36V
  • Junction Temp Range: -40C to 150C
  • 5 output voltages
  • Support safety applications

Design tools & simulation

SLVMBV3A.ZIP (555 KB) - PSpice Model
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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
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  • Supports simultaneous analysis of multiple products
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