SLVSAO5B December   2010  – October 2015 TPS62590-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Enable
      2. 8.3.2 Mode Selection
      3. 8.3.3 Soft Start
      4. 8.3.4 Short-Circuit Protection
      5. 8.3.5 100% Duty-Cycle Low-Dropout Mode
      6. 8.3.6 Undervoltage Lockout
      7. 8.3.7 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-Save Mode
      2. 8.4.2 Dynamic Voltage Positioning
  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 Output Voltage Setting
        2. 9.2.2.2 External Feed-Forward Capacitor
        3. 9.2.2.3 Output Filter Design (Inductor and Output Capacitor)
          1. 9.2.2.3.1 Inductor Selection
          2. 9.2.2.3.2 Output Capacitor Selection
          3. 9.2.2.3.3 Input Capacitor Selection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Community Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Qualified for Automotive Applications
  • Output Current up to 1000 mA
  • Input Voltage Range from 2.5 V to 6 V
  • High Efficiency Step Down Converter
  • Output Voltage Accuracy in PWM mode ±2.5%
  • Typical 15-μA Quiescent Current
  • 2.25 MHz Fixed Frequency Operation
  • Power Save Mode at Light Load Currents
  • 100% Duty Cycle for Lowest Dropout

2 Applications

  • Automotive Infotainment and Cluster
    • Head Unit
    • Navigation
    • Display
  • Advanced Driver Assistance System (ADAS)
    • Front Cameras
    • Blind Spot Monitoring
    • Lane Departure Warning
    • Park Assist

3 Description

The TPS62590-Q1 device is a high-efficiency synchronous step-down converter, optimized for space constrained applications and very low quiescent current requirements. It provides up to 1000-mA output current from preregulated low voltage rails and consumes 15 uA (typical) in power-save mode.

With an input voltage range of 2.5 V to 6 V and an output voltage accuracy of 2.5%, the device is targeted to power a large variety of automotive applications.

The TPS62590-Q1 family operates at a 2.25-MHz fixed switching frequency and enters a power-save mode at light load currents to maintain a high efficiency over the entire load current range.

The power-save mode is optimized for low output-voltage ripple. For low-noise applications, the device can be forced into fixed-frequency PWM mode by pulling the MODE pin high. In the shutdown mode, the current consumption is reduced to less than 1 µA. The TPS62590-Q1 allows the use of small inductors and capacitors to achieve a small solution size.

The TPS62590-Q1 is available in a 2-mm × 2-mm
6-pin SON package with a thermal pad for improved thermal performance.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS62590-Q1 SON (6) 2.00 mm × 2.00
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Schematic

TPS62590-Q1 fbd_slvsao5b.gif

Efficiency vs Load Current

TPS62590-Q1 fp_graph_slvsao5.gif