SLUUCF9A March   2021  – April 2021 TPS566231 , 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 TPS566231P is a single, D-CAP3™ mode, synchronous buck converter that requires a very low external component count. The TPS566231P is a cost-effective, high-voltage input, synchronous buck converter with integrated FETs. One of the key features of the TPS566231P is its ULQ (Ultra Low Quiescent), which is extremely beneficial for long battery life in low-power operation. The TPS566231P operates with wider supply input voltage ranging from 3 V to 18 V. The device uses DCAP3 control mode to provide the following:

  • Fast transient response
  • Good line
  • Load regulation
  • No requirement for external compensation
  • Support to low-ESR output capacitors
The TPS566231P is a high-efficiency converter, and provides complete protection (OVP, UVP, OCP, OTP), and with PGOOD indicator. The TPS566238P is in continuous current mode. Others are same with the TPS566231P. Table 1-1.

The TPS566231PEVM and TPS566238PEVM are single, synchronous buck converter evaluation modules that provide 1 V at 6 A from a 3-V to 18-V input. This user’s guide describes the TPS566231PEVM performance.

Table 1-1 Input Voltage and Output Current Summary
EVM INPUT VOLTAGE (VIN) RANGE OUTPUT CURRENT (IOUT) RANGE
TPS566231PEVM 3 V to 18 V 0 A to 6 A