SNVSBU2C September   2020  – December 2021 TPS542A52

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Enable and Adjustable Undervoltage Lockout
      2. 7.3.2  Input and VREG Undervoltage Lockout Protection
      3. 7.3.3  Voltage Reference and Setting the Output Voltage
      4. 7.3.4  Remote Sense Function
      5. 7.3.5  Switching Frequency
      6. 7.3.6  Voltage Control Mode Internal Compensation
      7. 7.3.7  Soft Start and Prebiased Output Start-up
      8. 7.3.8  Power Good
      9. 7.3.9  Overvoltage and Undervoltage Protection
      10. 7.3.10 Overcurrent Protection
      11. 7.3.11 High-Side FET Throttling
      12. 7.3.12 Overtemperature Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Pulse-Frequency Modulation Eco-mode Light Load Operation
      2. 7.4.2 Forced Continuous-Conduction Mode
      3. 7.4.3 Soft Start
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Full Analog Configuration
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1  Custom Design With WEBENCH® Tools
          2. 8.2.1.2.2  Output Voltage Calculation
          3. 8.2.1.2.3  Switching Frequency Selection
          4. 8.2.1.2.4  Inductor Selection
          5. 8.2.1.2.5  Input Capacitor Selection
          6. 8.2.1.2.6  Bootstrap Capacitor Selection
          7. 8.2.1.2.7  R-C Snubber and VIN Pin High-Frequency Bypass
          8. 8.2.1.2.8  Output Capacitor Selection
          9. 8.2.1.2.9  Response to a Load Transient
          10. 8.2.1.2.10 Pin-Strap Setting
        3. 8.2.1.3 Application Curves
        4. 8.2.1.4 Typical Application Circuits
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Custom Design With WEBENCH® Tools
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.6 Typical Characteristics

Measured at 25°C unless otherwise specified
Measured at 25°C unless otherwise specifiedGUID-C1DB4A39-B434-4E7E-869B-47C5175D75E5-low.gif
VOUT = 1 V fSW = 1 MHz, FCCM
Figure 6-1 Efficiency vs Output Current. Measured at 25°C unless otherwise specified
GUID-684EE346-BC01-4C5D-822D-9689E6118CCE-low.gif
VOUT = 1 V fSW = 1 MHz, DCM versus FCCM
Figure 6-3 Efficiency vs Output Current
GUID-A758A838-F449-41B5-943C-B13CA73DA020-low.gif
VOUT = 5 V fSW = 400 kHz, FCCM
Figure 6-5 Efficiency vs Output Current
GUID-EB15B3C7-7A48-4F5B-8136-C0C8FFAE2D4F-low.gif
VOUT = 1 V fSW = 1 MHz, FCCM
Figure 6-7 Load Regulation
GUID-85BF5A50-B284-40F3-8347-FA40777B4D12-low.gif
VIN = 12 VVOUT = 5 VfSW = 400 KHz, FCCM
Figure 6-9 Line Regulation
GUID-7DB5293F-A5B1-4695-9D67-EE44A4FFE3AA-low.gif
VIN = 12 VVOUT = 5 VfSW = 600 kHz
Figure 6-11 Ambient Temperature vs Output Current
GUID-7AA6CD31-C986-4681-A4DA-9EF574D957DC-low.gif
VIN = 12 V VOUT = 1 V fSW = 1 MHz
Figure 6-13 Thermal Image at 15-A Output Current
GUID-BF0C8756-01AE-4B15-AB0E-507C29318552-low.gif
VIN = 12 V VOUT = 5 V fSW = 0.6 MHz
Figure 6-15 Thermal Image at 12-A Output Current
GUID-20200811-CA0I-4HFG-FWPT-RL20RKQXBWTP-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-17 90% Pre-biased Start-up by EN at 0-A Output Current
GUID-20200811-CA0I-DXR9-WSCM-VL9L7DFNMLVH-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-19 Start-up and Shutdown by EN at 0-A Output Current
GUID-20200811-CA0I-CT31-Z424-GCKLGLGD4TWR-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-21 Steady State at 10-A Output Current
GUID-20200811-CA0I-W2SR-BJGJ-QKVPSZ5KC3TF-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-23 20-A Overcurrent Protection by Chroma Electronic Load
GUID-20200811-CA0I-FX6T-WV3B-HTT1DTZXKDTH-low.png
VIN = 12 V VOUT = 1 V fSW = 1.2 MHz BOM
Figure 6-25 Overvoltage Protection, Negative OCP, then Undervoltage Protection by Load Step Down
GUID-20200811-CA0I-M6KJ-HBZH-QC7HPJ5M1NM3-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-27 Load Transient in DCM to FCM 0.5 A to 10.5 A to 0.5 A at 1 A/μs
GUID-765836A7-AA7E-461B-888E-6ECED9704CA6-low.gif
VOUT = 1 V fSW = 1 MHz, FCCM
Figure 6-2 Power Loss vs Output Current
GUID-5951D2C0-6C33-470C-AC24-D6446F8C068C-low.gif
VOUT = 1 V fSW = 1 MHz, DCM versus FCCM
Figure 6-4 Power Loss vs Output Current
GUID-91CFDA1D-F75E-47D0-9D81-69C9724AC247-low.gif
VOUT = 5 V fSW = 400 kHz, FCCM
Figure 6-6 Power Loss vs Output Current
GUID-B32A140F-20C1-4A8E-A700-A8CC7C6CEDA4-low.gif
VOUT = 1 V fSW = 1 MHz, DCM
Figure 6-8 Line Regulation
GUID-DBD622FF-0ADE-4133-923F-720A9C2D3EDF-low.gif
VIN = 12 VVOUT = 1 VfSW = 1 MHz
Figure 6-10 Ambient Temperature vs Output Current
GUID-486DB8E3-38B9-4FA2-9196-43F5745B73AF-low.gif
VIN = 5.5 VVOUT = 1 VfSW = 2.2 MHz
Figure 6-12 Ambient Temperature vs Output Current
GUID-696BA130-0320-430A-B29F-8D15DC4A6D58-low.gif
VIN = 5.5 V VOUT = 1 V fSW = 2.2 MHz
Figure 6-14 Thermal Image at 14-A Output Current
GUID-20200811-CA0I-NHMM-K5XT-1NVTF3W8XGRS-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-16 100% Pre-biased Start-up by EN at 0-A Output Current
GUID-20200811-CA0I-15W3-SCV5-9L7TQQS6X5VJ-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-18 50% Pre-biased Start-up by EN at 0-A Output Current
GUID-20200811-CA0I-96T7-KQRW-CGMMLL0PJ9TM-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-20 Steady State at 0-A Output Current
GUID-20200811-CA0I-XJLB-0VJS-XBLPQRMFKLV8-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-22 Switch Node Ringing and Dead-Time at 10-A Output Current
GUID-20200811-CA0I-0XL7-Q3JB-Z3K4KPVRG76T-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-24 Short Overcurrent Protection Hiccup by Chroma Electronic Load
GUID-20200811-CA0I-QSRL-W2BP-DT0F67JGXGQB-low.png
VIN = 12 V VOUT = 1 V fSW = 1.0 MHz BOM
Figure 6-26 Load Transient 2 A to 12 A to 2 A at 20 A/μs