SLVUAY5A October   2014  – July 2021 TPS563219A

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output Voltage Setpoint
  5. 4Test Setup and Results
    1. 4.1  Input/Output Connections
    2. 4.2  Start-Up Procedure
    3. 4.3  Efficiency
    4. 4.4  Load Regulation
    5. 4.5  Line Regulation
    6. 4.6  Load Transient Response
    7. 4.7  Output Voltage Ripple
    8. 4.8  Input Voltage Ripple
    9. 4.9  Start-Up
    10. 4.10 Shut-Down
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Schematic, Bill of Materials, and Reference
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
    3. 6.3 Reference
  8. 7Revision History

Introduction

The TPS563219A is a single, adaptive on-time, D-CAP2™ mode, synchronous buck converter requiring a very low external component count. The D-CAP2 control circuit is optimized for low-ESR output capacitors such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no external compensation. The slow start time is externally programmable and there is a dedicated Power Good (PG) pin to aid in voltage monitoring and sequencing. The switching frequency is internally set at a nominal 650 kHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS563219A package along with the gate-drive circuitry. The low drain-to-source on resistance of the MOSFETs allows the TPS563219A to achieve high efficiencies and helps keep the junction temperature low at high output currents. The TPS563219A dc/dc synchronous converter is designed to provide up to a 3-A output from an input voltage source of 4.5 V to 17 V. The output voltage range is from 0.8 V to 6.5 V. Rated input voltage and output current ranges for the evaluation module are given in Table 1-1.

The TPS563219AEVM-663 evaluation module (EVM) is a single, synchronous buck converter providing 1.05 V at 3 A from 4.5-V to 17-V input. This user’s guide describes the TPS563219AEVM-663 performance.

Table 1-1 Input Voltage and Output Current Summary
EVMInput Voltage RangeOutput Current Range
TPS563219AEVM-663VIN = 4.5 V to 17 V0 A to 3 A