SLVU441B May   2011  – August 2021 TPS54622

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Set Point
      2. 1.3.2 Slow-Start Time
      3. 1.3.3 Track In
      4. 1.3.4 Adjustable UVLO
      5. 1.3.5 Input Voltage Rails
  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 Pre-Bias Start-Up
    11. 2.11 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

1.2 Performance Specification Summary

A summary of the TPS54622EVM-012 performance specifications is provided in Table 1-2. Specifications are given for an input voltage of VIN = 12 V and an output voltage of 3.3 V, unless otherwise specified. The TPS54622EVM-012 is designed and tested for VIN = 8 V to 17 V with the VIN and PVIN pins connect together with the J5 jumper. The ambient temperature is 25°C for all measurements, unless otherwise noted.

Table 1-2 TPS54622EVM-012 Performance Specification Summary
SPECIFICATIONTEST CONDITIONSMINTYPMAXUNIT
VIN voltage range (PVIN = VIN)81217V
VIN start voltage6.528V
VIN stop voltage6.19V
Output voltage set point3.3V
Output current rangeVIN = 8 V to 17 V06A
Line regulationIO = 3 A, VIN = 8 V to 17 V±0.02%
Load regulationVIN = 12 V, IO = 0 A to 6 A±0.013%
Load transient responseIO = 1.5 A to 4.5 AVoltage change–150mV
Recovery time200µs
IO = 4.5 A to 1.5 AVoltage change150mV
Recovery time200µs
Loop bandwidthVIN = 12 V, IO = 1.9 A44.7kHz
Phase marginVIN = 12 V , IO = 1.9 A54°
Input ripple voltageIO = 6 A420mVPP
Output ripple voltageIO = 6 A18mVPP
Output rise time6ms
Operating frequency480kHz
Maximum efficiencyTPS54622EVM-012, VIN = 8 V, IO = 2 A94.9%