SLVSD44 September 2017 TPS63710

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Low Noise Reference System
      2. 7.3.2Duty Cycle
      3. 7.3.3Enable
      4. 7.3.4Undervoltage Lockout
      5. 7.3.5Thermal Shutdown
      6. 7.3.6Power Good Output
    4. 7.4Device Functional Modes
      1. 7.4.1Soft-Start
      2. 7.4.2VOUT Discharge
      3. 7.4.3Current Limit
      4. 7.4.4CCP Capacitor Precharge
      5. 7.4.5PWM Operation
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
        1. 8.2.2.1Custom Design With WEBENCH® Tools
        2. 8.2.2.2Setting the Output Voltage
        3. 8.2.2.3Inductor Selection
        4. 8.2.2.4Capacitor Selection
          1. 8.2.2.4.1CCP Capacitor
          2. 8.2.2.4.2Input Capacitor
          3. 8.2.2.4.3Output Capacitor
      3. 8.2.3Application Curves
        1. 8.2.3.1Parameter Measurement Information
    3. 8.3System Examples
      1. 8.3.1Typical Application for Powering the Negative Rail of a Gallium Nitride (GaN) Power Amplifier
      2. 8.3.2Typical Application for Powering the Negative Rail of an ADC or DAC
      3. 8.3.3Typical Application for Laser Diode Bias
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Device Support
      1. 11.1.1Custom Design With WEBENCH® Tools
      2. 11.1.2Third-Party Products Disclaimer
    2. 11.2Community Resources
    3. 11.3Trademarks
    4. 11.4Electrostatic Discharge Caution
    5. 11.5Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Features

  • 3.1 V to 14 V Input Voltage Range
  • 1 A Output Current
  • ±1.5% Output Voltage Accuracy
  • Synchronous Rectification
  • Low 1/f-Noise Reference System
  • Output Voltage: -1 V to -5.5 V
  • |VOUT| < 0.7 x VIN
  • Up to 91% Efficiency
  • 1.5-MHz fixed frequency PWM mode
  • Thermal Shutdown
  • 5-μA Shutdown Current
  • 3-mm × 3-mm WSON Package
  • Create a Custom Design Using the TPS63710 With the WEBENCH® Power Designer

Applications

  • Generic Negative Voltage Supply
  • ADC and DAC Supply in Telecom Systems
  • Bias for GaN transistors
  • Optical Module Laser Diode Bias
  • Noise Sensitive and Space Limited Applications
    Requiring a Negative Supply Voltage

Description

The TPS63710 is an inverting step-down dc-dc converter generating a negative output voltage down to -5.5 V. It provides an output current up to 1 A, depending on the input-voltage to output-voltage ratio. Its filtered reference system gives low 1/f noise which is required in high performance telecommunication systems.

The TPS63710 operates with a fixed-frequency PWM control topology. It has an internal current limit and a thermal shutdown. The input voltage range of 3.1 V to 14 V allows the TPS63710 to be used in a variety of applications where a negative output voltage is generated from a, in absolute value, higher positive input voltage.

Synchronous rectification provides high efficiency especially for small output voltages like -1.8 V, which are typically used as a negative supply voltage for high performance DACs and ADCs. A fixed switching frequency of 1.5 MHz allows the use of small external components and enables a small total solution size.

The TPS63710 comes in a 3-mm × 3-mm WSON package that provides good thermal performance in applications running at high ambient temperature.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
TPS63710WSON 3 mm x 3 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Typical Application

TPS63710 TPS63710_firstpage_schematic.gif

Efficiency vs output current for VOUT = -1.8V

TPS63710 D004_SLVSD44.gif