SLVSEQ0A May   2019  – March 2020 TPS54A24

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
    1.     Simplified Schematic
  3. 3 Description
    1.     Efficiency (VIN = 12 V, fSW = 500 kHz)
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 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  Fixed Frequency PWM Control
      2. 7.3.2  Continuous Conduction Mode Operation (CCM)
      3. 7.3.3  VIN Pins and VIN UVLO
      4. 7.3.4  Voltage Reference and Adjusting the Output Voltage
      5. 7.3.5  Error Amplifier
      6. 7.3.6  Enable and Adjustable UVLO
      7. 7.3.7  Soft Start and Tracking
      8. 7.3.8  Safe Start-Up Into Prebiased Outputs
      9. 7.3.9  Power Good
      10. 7.3.10 Sequencing (SS/TRK)
      11. 7.3.11 Adjustable Switching Frequency (RT Mode)
      12. 7.3.12 Synchronization (CLK Mode)
      13. 7.3.13 Bootstrap Voltage and 100% Duty Cycle Operation (BOOT)
      14. 7.3.14 Output Overvoltage Protection (OVP)
      15. 7.3.15 Overcurrent Protection
        1. 7.3.15.1 High-Side MOSFET Overcurrent Protection
        2. 7.3.15.2 Low-Side MOSFET Overcurrent Protection
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  Custom Design With WEBENCH® Tools
        2. 8.2.2.2  Switching Frequency
        3. 8.2.2.3  Output Inductor Selection
        4. 8.2.2.4  Output Capacitor
        5. 8.2.2.5  Input Capacitor
        6. 8.2.2.6  Output Voltage Resistors Selection
        7. 8.2.2.7  Soft-Start Capacitor Selection
        8. 8.2.2.8  Undervoltage Lockout Setpoint
        9. 8.2.2.9  Bootstrap Capacitor Selection
        10. 8.2.2.10 PGOOD Pullup Resistor
        11. 8.2.2.11 Compensation
      3. 8.2.3 Application Curves
  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 Community 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

8.2.3 Application Curves

TPS54A24 D001-efficiency-slvubm5.gif
TA = 25°C VOUT = 1.8 V fSW = 500 kHz
Figure 37. Efficiency
TPS54A24 D006-thermal-slvubm5.gif
VIN = 12 V VOUT = 1.8 V fSW = 500 kHz
3 inch × 3 inch EVM 4 layers 2 ounce copper
Figure 39. Thermal Performance
TPS54A24 D004-linereg-slvubm5.gif
TA = 25°C VOUT = 1.8 V fSW = 500 kHz
Figure 41. Line Regulation
TPS54A24 loadtrans-slvubm5.gif
VIN = 12 V VOUT = 1.8 V
Figure 43. Transient Response
TPS54A24 outputripple-10A-slvubm5.gif
VIN = 12 V VOUT = 1.8 V IOUT = 10 A
Figure 45. Output Ripple, 10-A Load
TPS54A24 inputripple-10A-slvubm5.gif
VIN = 12 V VOUT = 1.8 V IOUT = 10 A
Figure 47. Input Ripple, 10-A Load
TPS54A24 VIN-shutdown-slvubm5.gif
ROUT = 1 Ω
Figure 49. VIN Shutdown
TPS54A24 EN-shutdown-slvubm5.gif
ROUT = 1 Ω
Figure 51. EN Shutdown
TPS54A24 hiccup-enter-slvubm5.gif
VIN = 12 V Load = short
Figure 53. Output Short-Circuit Response
TPS54A24 hiccup-recover-slvubm5.gif
VIN = 12 V Load = short
Figure 55. Hiccup Recovery
TPS54A24 D002-efficiency-log-slvubm5.gif
TA = 25°C VOUT = 1.8 V fSW = 500 kHz
Figure 38. Efficiency (Log Scale)
TPS54A24 D003-loadreg-slvubm5.gif
TA = 25°C VOUT = 1.8 V fSW = 500 kHz
Figure 40. Load Regulation
TPS54A24 D005-loop-slvubm5.gif
VIN = 12 V VOUT = 1.8 V ROUT = 0.3 Ω
Figure 42. Loop Response
TPS54A24 outputripple-0A-slvubm5.gif
VIN = 12 V VOUT = 1.8 V IOUT = 0 A
Figure 44. Output Ripple, No Load
TPS54A24 inputripple-0A-slvubm5.gif
VIN = 12 V VOUT = 1.8 V IOUT = 0 A
Figure 46. Input Ripple, No Load
TPS54A24 VIN-startup-slvubm5.gif
ROUT = 1 Ω
Figure 48. VIN Start-up
TPS54A24 EN-startup-slvubm5.gif
ROUT = 1 Ω
Figure 50. EN Start-up
TPS54A24 prebias-startup-slvubm5.gif
Figure 52. EN Start-up With Prebiased Output
TPS54A24 hiccup-time-slvubm5.gif
VIN = 12 V Load = short
Figure 54. Hiccup Current Limit