SLVSDC9B November   2016  – November 2019 TPS54824

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
    1.     Simplified Schematic
  3. 3 Description
    1.     Efficiency
  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 Switching Characteristics
    7. 6.7 Timing Requirements
    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 Pre-Biased 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  Switching Frequency
        2. 8.2.2.2  Output Inductor Selection
        3. 8.2.2.3  Output Capacitor
        4. 8.2.2.4  Input Capacitor
        5. 8.2.2.5  Output Voltage Resistors Selection
        6. 8.2.2.6  Soft-start Capacitor Selection
        7. 8.2.2.7  Undervoltage Lockout Set Point
        8. 8.2.2.8  Bootstrap Capacitor Selection
        9. 8.2.2.9  PGOOD Pull-up Resistor
        10. 8.2.2.10 Compensation
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Alternate Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 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

TPS54824 D025_slvsdc9.gif
TJ = 25°C VOUT = 1.8 V fSW = 700 kHz
Figure 33. Efficiency
TPS54824 D027_slvsdc9.gif
TJ = 25°C VOUT = 1.8 V fSW = 700 kHz
Figure 35. Load Regulation
TPS54824 D029_slvsdc9.gif
VIN = 12 V VOUT = 1.8 V IOUT = 4 A
Figure 37. Loop Response
TPS54824 vout_ripple_0A_slvuAX8.gif
VIN = 12 V VOUT = 1.8 V IOUT = 0 A
Figure 39. Output Ripple, No Load
TPS54824 vin_ripple_0A_slvuAX8.gif
VIN = 12 V VOUT = 1.8 V IOUT = 0 A
Figure 41. Input Voltage Ripple, No Load
TPS54824 start_vin_slvuAX8.gif
RLOAD = 1 Ω
Figure 43. VIN Startup
TPS54824 stop_vin_slvuAX8.gif
RLOAD = 1 Ω VIN = 12 V
Figure 45. VIN Shutdown
TPS54824 prebias_start_en_slvuAX8.png
VIN = 12 V
Figure 47. EN Startup with Pre-biased Output
TPS54824 hiccup_start_slvuAX8.gif
VIN = 12 V IOUT = short
Figure 49. Hiccup Mode Current Limit
TPS54824 D026_slvsdc9.gif
TJ = 25°C VOUT = 1.8 V fSW = 700 kHz
Figure 34. Efficiency (Log Scale)
TPS54824 D028_slvsdc9.gif
TJ = 25°C VOUT = 1.8 V fSW = 700 kHz
Figure 36. Line Regulation
TPS54824 load_transient_slvuAX8.gif
VIN = 12 V VOUT = 1.8 V
Figure 38. Transient Response
TPS54824 vout_ripple_8A_slvuAX8.gif
VIN = 12 V VOUT = 1.8 V IOUT = 8 A
Figure 40. Output Ripple, Full Load
TPS54824 vin_ripple_8A_slvuAX8.gif
VIN = 12 V VOUT = 1.8 V IOUT = 8 A
Figure 42. Input Voltage Ripple, Full Load
TPS54824 start_en_slvuAX8.gif
RLOAD = 1 Ω
Figure 44. EN Startup
TPS54824 stop_en_slvuAX8.gif
RLOAD = 1 Ω
Figure 46. EN Shutdown
TPS54824 hiccup_slvuAX8.gif
VIN = 12 V IOUT = short
Figure 48. Output Short Circuit Response
TPS54824 hiccup_stop_slvuAX8.gif
VIN = 12 V IOUT = short removed
Figure 50. Hiccup Mode Recovery