SLVUBM5A April   2019  – August 2021 TPS54A24

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Characteristics Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Setpoint
      2. 1.3.2 Adjustable UVLO
      3. 1.3.3 Component Values to Evaluate Common Output Voltages
  3. 2Test Setup and Results
    1. 2.1  Input/Output Connections
    2. 2.2  Efficiency
    3. 2.3  Output Voltage Load Regulation
    4. 2.4  Load Transient and Loop Response
    5. 2.5  Output Voltage Ripple
    6. 2.6  Input Voltage Ripple
    7. 2.7  Powering Up
    8. 2.8  Powering Down
    9. 2.9  Start-Up Into Pre-Bias
    10. 2.10 Hiccup Mode Current Limit
    11. 2.11 Thermal Performance
  4. 3Board Layout
    1. 3.1 Layout
  5. 4Schematic and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Bill of Materials
  6. 5Revision History

1.1 Background

The TPS54A24 dc/dc converter is a synchronous buck converter designed to provide up to an 10-A output. The input (VIN) is rated for 4.5 V to 17 V. Rated input voltage and output current range for the evaluation module are given in Table 1-1. This evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS54A24 regulator. The RT/CLK pin is configured for 500-kHz switching frequency. The high-side and low-side MOSFETs are incorporated inside the TPS54A24 package along with the gate-drive circuitry. The low drain-to-source on-resistance of the MOSFET allows the TPS54A24 to achieve high efficiencies and helps keep the junction temperature low at high output currents. An external divider allows for an adjustable output voltage. Additionally, the TPS54A24 provides adjustable soft start and undervoltage lockout inputs and a power good output.

Table 1-1 Input Voltage and Output Current Summary
EVMInput Voltage RangeOutput Current Range
TPS54A24EVM-058VIN = 4.5 V to 17 V0 A to 10 A