SLVUAX8B November   2016  – August 2021 TPS54824

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Evaluating the TPS54824EVM-779 at –40°C
    4. 1.4 Modifications
      1. 1.4.1 Output Voltage Setpoint
      2. 1.4.2 Adjustable UVLO
      3. 1.4.3 Example Component Values For 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  Output Voltage Line Regulation
    5. 2.5  Load Transients
    6. 2.6  Loop Characteristics
    7. 2.7  Output Voltage Ripple
    8. 2.8  Input Voltage Ripple
    9. 2.9  Powering Up
    10. 2.10 Powering Down
    11. 2.11 Start-Up Into Pre-Bias
    12. 2.12 Hiccup Mode Current Limit
  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 TPS54824 dc/dc converter is a synchronous buck converter designed to provide up to an 8-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 can be achieved when designing with the TPS54824 regulator. The RT/CLK pin is configured for 700-kHz switching frequency. The high-side and low-side MOSFETs are incorporated inside the TPS54824 package along with the gate-drive circuitry. The low drain-to-source on-resistance of the MOSFET allows the TPS54824 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 TPS54824 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
TPS54824EVM-779VIN = 4.5 V to 17 V0 A to 8 A