SLUUCH6B september   2022  – september 2023 TPS543B22

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Background
    2. 1.2 Before You Begin
    3. 1.3 Performance Characteristics Summary
  5. 2Configurations and Modifications
    1. 2.1 Output Voltage
    2. 2.2 Switching Frequency (FSEL Pin)
    3. 2.3 Current Limit, Soft-Start Time, and Internal Compensation (MODE Pin)
    4. 2.4 Adjustable UVLO
  6. 3Test Setup and Results
    1. 3.1  Input/Output Connections
    2. 3.2  Efficiency
    3. 3.3  Output Voltage Regulation
    4. 3.4  Load Transient and Loop Response
    5. 3.5  Output Voltage Ripple
    6. 3.6  Input Voltage Ripple
    7. 3.7  Synchronizing to a Clock
    8. 3.8  Start-up and Shutdown with EN
    9. 3.9  Start-up and Shutdown with VIN
    10. 3.10 Start-up Into Pre-Bias
    11. 3.11 Hiccup Current Limit
    12. 3.12 Thermal Performance
  7. 4Board Layout
    1. 4.1 Layout
  8. 5Schematic and Bill of Materials
    1. 5.1 Schematic
    2. 5.2 Bill of Materials
  9. 6Revision History

1.3 Performance Characteristics Summary

A summary of the TPS543B22EVM performance characteristics is provided in Table 1-2 and Table 1-3. The TPS543B22EVM is designed and tested for VIN = 4 V to 18 V. Characteristics are given for an input voltage of VIN = 12 V and an output voltage of 1.2 V, unless otherwise specified. The ambient temperature is room temperature (25°C) for all measurements, unless otherwise noted.

Table 1-2 TPS543B22EVM Small Size (U1) Performance Characteristics Summary
SPECIFICATIONTEST CONDITIONSMINTYPMAXUNIT
VIN voltage range11.71212.3V
Output voltage setpoint1.2V
Output current rangeVIN = 11.7 V to 12.3 V 020A
Output rise time Set by MODE pin resistor 2 ms
Current limit Set by MODE pin resistor High
Switching frequency (fSW) Set by FSEL pin resistor 2200 kHz
Table 1-3 TPS543B22EVM High Efficiency (U2) Performance Characteristics Summary
SPECIFICATION TEST CONDITIONS MIN TYP MAX UNIT
VIN voltage range 4 12 18 V
Output voltage setpoint J3 short pins 1 and 2 1 V
Output current range VIN = 4 V to 18 V 0 20 A
Output rise time Set by MODE pin resistor, All default J13 options 2 ms
Current limit Set by MODE pin resistor, J9 short pins 1 and 2, 3 and 4, or 5 and 6 High
Switching frequency (fSW) Set by FSEL pin resistor, J7 short pins 3 and 4 1000 kHz