SLVUCK9A august   2023  – august 2023 TPS562203 , TPS562206

 

  1.   1
  2.   Description
  3.   Trademarks
  4. 1 Features
  5. 2 Applications
  6. 3 Hardware Image
  7. 4 Evaluation Module Overview
    1. 4.1 Introduction
    2. 4.2 Kit Contents
    3. 4.3 Reference
    4. 4.4 Device Information
  8. 5 Performance Specification Summary
  9. 6 Output Voltage Setpoint
  10. 7 Test Setup and Results
    1. 7.1 Input, Output Connections
    2. 7.2 Start-Up Procedure
    3. 7.3 Efficiency
    4. 7.4 Load Regulation
    5. 7.5 Line Regulation
    6. 7.6 Load Transient Response
    7. 7.7 Start-Up
    8. 7.8 Shutdown
    9. 7.9 Output Voltage Ripple
  11. 8 Hardware Design Files
    1. 8.1 Schematic
    2. 8.2 Layout
    3. 8.3 Bill of Materials
  12. 9 Reference
  13. 10Revision History

4.1 Introduction

In light-load conditions, the TPS562203 operates in Eco-mode to enable higher efficiency by varying switching frequency, the TPS562206 operates in FCCM to maintain constant switching frequency. The main difference is at light loading, but the other behaviors are similar. This user's guide mainly introduces the TPS562203 and includes some TPS562206 features that are different from the TPS562203.

The TPS56220x is a single, adaptive on-time, D-CAP3™ control mode, synchronous buck converter that requires a very low external component count. The D-CAP3 control mode 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 switching frequency is internally set at a nominal 600 kHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS56220x package along with the gate-drive circuitry. The low drain-to-source on resistance of the MOSFETs and fast switching slew rate allow the TPS56220x to achieve high efficiency and help keep the junction temperature low at high output currents. The TPS56220x DC/DC synchronous converter is designed to support up to a 2-A continuous current from an input voltage source of 4.2 V to 17 V. The output voltage range is from 0.6 V to 7 V. Rated input voltage and output current ranges for the evaluation module are given in Table 4-1.

The TPS56220xEVM evaluation module (EVM) is a single, synchronous buck converter providing 1.05 V at 2 A from 4.2-V to 17-V input. This user’s guide describes the TPS56220xEVM performance.

Table 4-1 Input Voltage and Output Current Summary
EVM INPUT VOLTAGE (VIN) RANGE OUTPUT CURRENT (IOUT) RANGE
TPS562203EVM VIN = 4.2 V to 17 V 0 A to 2 A
TPS562206EVM VIN = 4.2 V to 17 V 0 A to 2 A