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  • TPS629211-Q1 1-A, 3-V to 10-V Automotive Low IQ Buck Converter

    • SLVSGD0A March   2022  – March 2023 TPS629211-Q1

      PRODUCTION DATA  

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  • TPS629211-Q1 1-A, 3-V to 10-V Automotive Low IQ Buck Converter
  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Thermal Information - DYC Package
    6. 7.6 Electrical Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Mode Selection and Device Configuration (MODE/S-CONF Pin)
      2. 8.3.2 Adjustable VO Operation (External Voltage Divider)
      3. 8.3.3 Selectable VO Operation (VSET and Internal Voltage Divider)
      4. 8.3.4 Smart Enable with Precise Threshold
      5. 8.3.5 Power Good (PG)
      6. 8.3.6 Output Discharge Function
      7. 8.3.7 Undervoltage Lockout (UVLO)
      8. 8.3.8 Current Limit and Short Circuit Protection
      9. 8.3.9 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Forced Pulse Width Modulation (PWM) Operation
      2. 8.4.2 Power Save Mode Operation (Auto PFM/PWM)
      3. 8.4.3 AEE (Automatic Efficiency Enhancement)
      4. 8.4.4 100% Duty-Cycle Operation
      5. 8.4.5 Starting into a Prebiased Load
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Programming the Output Voltage
        3. 9.2.2.3 External Component Selection
          1. 9.2.2.3.1 Output Filter and Loop Stability
          2. 9.2.2.3.2 Inductor Selection
          3. 9.2.2.3.3 Capacitor Selection
            1. 9.2.2.3.3.1 Output Capacitor
            2. 9.2.2.3.3.2 Input Capacitor
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 Powering Multiple Loads
      2. 9.3.2 Inverting Buck-Boost (IBB)
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
      3. 9.5.3 Thermal Considerations
  10. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
      2. 10.1.2 Development Support
        1. 10.1.2.1 Custom Design With WEBENCH® Tools
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  11. 11Mechanical, Packaging, and Orderable Information
  12. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • DYC|8
    • MPSS142A
  • DRL|8
    • MPCS002F
Thermal pad, mechanical data (Package|Pins)
Orderable Information
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  • slvsgd0a_pm
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DATA SHEET

TPS629211-Q1 1-A, 3-V to 10-V Automotive Low IQ Buck Converter

1 Features

  • AEC-Q100 qualified for automotive applications:
    • –40°C to 150°C operating junction temp range
    • Level 2 device HBM ESD classification
    • Level C4B CDM ESD classification
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • High-efficiency DCS-Control topology
    • Internal compensation
    • Seamless PWM/PFM transition
  • 4-µA typical low quiescent current
  • Output current up to 1 A
  • 250-mΩ high side, 85-mΩ low side RDSON
  • ±1% output voltage accuracy
  • Configurable output voltage options:
    • 0.6-V to 5.5-V VFB external divider:
    • VSET internal divider:
      • 18 options between 0.4 V and 5.5 V
  • Flexibility through the MODE/S-CONF pin
    • 2.5-MHz or 1.0-MHz switching frequency
    • Forced PWM or auto (PFM) power save mode with dynamic mode change option
    • Output discharge on, off
  • No external bootstrap capacitor required
  • Overcurrent and overtemperature protection
  • 100% duty cycle mode
  • Precise enable input
  • Power-good output
  • Pin-to-pin compatible with the TPS629210-Q1, TPS629206-Q1, and TPS629203-Q1 devices
  • 0.5-mm pitch, 8-pin SOT-5X3 package

2 Applications

  • Advanced driver assistance systems (ADAS)
  • Automotive infotainment and cluster
  • Vehicle body electronics and lighting
  • Hybrid, electric and powertrain systems

3 Description

The automotive-qualifiedTPS629211-Q1 device is a highly efficient, small, and highly flexible synchronous step-down DC-DC converter that is easy to use. A wide 3-V to 10-V input voltage range supports a wide variety of systems powered from either 9-V, 5-V, or 3.3-V supply rails, or single-cell or multi-cell Li-Ion batteries. The TPS629211-Q1 can be configured to run at either 2.5 MHz or 1 MHz in a forced PWM mode or a variable frequency (auto PFM) mode. In auto PFM mode, the device automatically transitions to power save mode at light loads to maintain high efficiency. The low 4-µA typical quiescent current also provides high efficiency down to the smallest loads. TI's automatic efficiency enhancement (AEE) mode holds a high conversion efficiency through the whole operation range without the need of using different inductors by automatically adjusting the switching frequency based on input and output voltages. In addition to selecting the switching frequency behavior, the MODE/S-CONF input pin can also be used to select between different combinations of external and internal feedback dividers and enabling and disabling the output voltage discharge capability. In the internal feedback configuration, a resistor between the FB/VSET pin and GND can be used to select between 18 different output voltage options (see Table 8-2).

Package Information
PART NUMBERPACKAGE#GUID-D59B1B94-5607-4410-AB3A-3E1E78A50581/DEVINFONOTEBODY SIZE (NOM)
TPS629211-Q1 DRL (SOT-5X3, 8) 1.60 mm × 2.10 mm (including pins)
TPS629211-Q1 DYC (SOT-5X3, 8) 1.60 mm × 2.10 mm (including pins)
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Simplified Schematic
Efficiency Versus Output Current
VOUT = 3.3 V at 2.5-MHz Auto PFM/PWM

4 Revision History

Changes from Revision * (March 2022) to Revision A (March 2023)

  • Added the DYC packageGo
  • Added the DYC packageGo
  • Switched pin 6 and 7 in Table 6-1 Go
  • Added the DYC packageGo
  • Added the DYC packageGo

5 Device Comparison Table

Device Number Output Current Input Voltage Operating Temperature Range Switching Frequency PWM Mode VO Adjust Package Options
TPS629203-Q1 0 A – 0.3 A 3 V – 17 V –40°C to 150°C Selectable 1-MHz or 2.5-MHz options Selectable auto PWM/PFM or forced PWM Externally programmable or 18 internal options DRL
TPS629206-Q1 0 A – 0.6 A
TPS629210-Q1 0 A – 1 A DRL and DYC
TPS629211-Q1 0 A – 1 A 3 V – 10 V –40°C to 150°C Selectable 1-MHz or 2.5-MHz options Selectable auto PWM/PFM or forced PWM Externally programmable or 18 internal options DRL and DYC

 
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