SLUUC75B May   2020  – June 2021 TPS566238

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Output Voltage Setpoint
  5. 4Test Setup and Results
    1. 4.1 Input/Output Connections
    2. 4.2 Start-Up Procedure
    3. 4.3 Start-Up
    4. 4.4 Shut-Down
    5. 4.5 Output Voltage Ripple
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Board Profile, Schematic, List of Materials, and Reference
    1. 6.1 Board Profile
    2. 6.2 Schematic
    3. 6.3 List of Materials
    4. 6.4 Reference
  8. 7Revision History

1 Introduction

The TPS566238 is a single, D-CAP3™ mode, synchronous buck converter requiring a very low external component count. The TPS566238 is a cost effective, high-voltage input, synchronous buck converter with integrated FETs. One of the key features of the TPS566238 operates in continuous current mode, which maintains lower output ripple during all load conditions.

The TPS566238 operates with wider supply input voltage ranging from 3 V to 18 V. It uses DCAP3™ control mode to provide a fast transient response, good line, load regulation, no requirement for external compensation, and supports low ESR output capacitors. The TPS566238 is a high-efficiency converter, and provides complete protection OVP, UVP, OCP, OTP. See Table 1-1.

The TPS566238EVM evaluation module (EVM) is a single, synchronous buck converter providing 1 V at 6 A from 3-V to 18-V input. This user’s guide describes the TPS566238EVM performance.

Table 1-1 Input Voltage and Output Current Summary
EVMInput Voltage (VIN) RangeOutput Current (IOUT) Range
TPS566238EVM3 V to 18 V0 A to 6 A