SLVSCK7D December   2014  – February 2017 TPS62170-Q1 , TPS62171-Q1 , TPS62172-Q1

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Enable / Shutdown (EN)
      2. 8.3.2 Softstart
      3. 8.3.3 Power Good (PG)
      4. 8.3.4 Under Voltage Lockout (UVLO)
      5. 8.3.5 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Pulse Width Modulation (PWM) Operation
      2. 8.4.2 Power Save Mode Operation
      3. 8.4.3 100% Duty-Cycle Operation
      4. 8.4.4 Current Limit and Short Circuit Protection
      5. 8.4.5 Operation Above TJ = 125°C
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical TPS62170-Q1 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 Inductor Selection
          2. 9.2.2.3.2 Capacitor Selection
            1. 9.2.2.3.2.1 Output Capacitor
            2. 9.2.2.3.2.2 Input Capacitor
        4. 9.2.2.4 Output Filter and Loop Stability
      3. 9.2.3 Application Performance Plots
    3. 9.3 System Examples
      1. 9.3.1 Inverting Power Supply
      2. 9.3.2 Various Output Voltages
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 Custom Design With WEBENCH® Tools
      2. 12.1.2 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Related Links
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Receiving Notification of Documentation Updates
    7. 12.7 Community Resources
    8. 12.8 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Features

  • DCS-Control™ Topology
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade: –40°C to 125°C Operating Junction Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4B
  • Input Voltage Range: 3 V to 17 V
  • Up to 500-mA Output Current
  • Adjustable Output Voltage from 0.9 V to 6 V
  • Fixed Output Voltage Versions
  • Seamless Power Save Mode Transition
  • Typically 17-µA Quiescent Current
  • Power Good Output
  • 100% Duty Cycle Mode
  • Short Circuit Protection
  • Over Temperature Protection
  • Pin to Pin Compatible With TPS62160-Q1
  • Available in a 2 × 2 mm, WSON-8 Package
  • Create a Custom Design Using the TPS62170-Q1 With the WEBENCH® Power Designer

Applications

  • Automotive 12-V Rail Supplies
  • Power Over Coax POL Supply
  • Camera, Video Modules
  • LDO Alternative

Description

The TPS6217x-Q1 family is an easy to use synchronous step down DC-DC converter optimized for applications with high power density. A high switching frequency of typically 2.25 MHz allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by utilization of the DCS-Control™ topology.

With their wide operating input voltage range of 3 V to 17 V, the devices are ideally suited for systems powered from either a Li-Ion or other battery as well as from 12-V intermediate power rails. It supports up to 0.5-A continuous output current at output voltages between 0.9 V and 6 V (with 100% duty cycle mode).

Power sequencing is also possible by configuring the Enable and open-drain Power Good pins.

In Power Save Mode, the devices draw quiescent current of about 17 μA from VIN. Power Save Mode, entered automatically and seamlessly if load is small, maintains high efficiency over the entire load range. In Shutdown Mode, the device is turned off and shutdown current consumption is less than 2 μA.

The device, available in adjustable and fixed output voltage versions, is packaged in an 8-pin WSON package measuring 2 × 2 mm (DSG).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS62170-Q1 WSON (8) 2.00 mm × 2.00 mm
TPS62171-Q1 WSON (8) 2.00 mm × 2.00 mm
TPS62172-Q1 WSON (8) 2.00 mm × 2.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Schematic

Efficiency vs Output Current

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TPS62170-Q1 TPS62171-Q1 TPS62172-Q1 SLVSCK7_typapp.gif
TPS62170-Q1 TPS62171-Q1 TPS62172-Q1 SLVSCK7_eff_lin.gif