SLVSIF3 February   2025 TPS561300

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Fixed-Frequency PWM Control
      2. 6.3.2  Pulse Frequency Mode
      3. 6.3.3  Error Amplifier
      4. 6.3.4  Slope Compensation and Output Current
      5. 6.3.5  Enable and Adjusting Undervoltage Lockout
      6. 6.3.6  Safe Start-Up into Prebiased Outputs
      7. 6.3.7  Voltage Reference
      8. 6.3.8  Adjusting Output Voltage
      9. 6.3.9  Internal Soft Start
      10. 6.3.10 Bootstrap Voltage (BOOT)
      11. 6.3.11 Overcurrent Protection
        1. 6.3.11.1 High-Side MOSFET Overcurrent Protection
        2. 6.3.11.2 Low-Side MOSFET Overcurrent Protection
      12. 6.3.12 Spread Spectrum
      13. 6.3.13 Output Overvoltage Protection (OVP)
      14. 6.3.14 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Eco-mode Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 TPS561300 5V to 30V Input, 5V Output Converter
      2. 7.2.2 Design Requirements
      3. 7.2.3 Detailed Design Procedure
        1. 7.2.3.1 Input Capacitor Selection
        2. 7.2.3.2 Bootstrap Capacitor Selection
        3. 7.2.3.3 Output Voltage Setpoint
        4. 7.2.3.4 Undervoltage Lockout Setpoint
        5. 7.2.3.5 Inductor Selection
      4. 7.2.4 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel Information

5.5 Electrical Characteristics

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product. TJ = –40°C to +150°C, VIN = 4.5V to 30V, (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT SUPPLY
VIN Input voltage range 4.5 30 V
IQ Non switching quiescent current EN = 5V, VFB = 1V 26 µA
IOFF Shut down current EN = GND 2 µA
VIN(UVLO) VIN undervoltage lockout Rising VIN 3.9 4.2 4.5 V
Falling VIN 3.4 3.7 4 V
Hysteresis 400 480 650 mV
ENABLE (EN PIN)
V(EN_RISING) Enable threshold Rising 1.21 1.28 V
V(EN_FALLING) Falling 1.1 1.19 V
I(EN_INPUT) Input current VEN = 1V 0.7 μA
I(EN_HYS) Hysteresis current VEN = 1.5V 1.55 μA
FEEDBACK AND ERROR AMPLIFIER
VFB Feedback voltage VIN = 12V 0.587 0.596 0.605 V
PULSE SKIP MODE
I(SKIP)(1) Pulse skip mode peak inductor current threshold VIN = 24V, VOUT = 5V, L = 15µH 300 mA
POWER STAGE
R(HSD) High-side FET on resistance TA = 25°C, VBST – SW = 6V 100 mΩ
R(LSD) Low-side FET on resistance TA = 25°C, VIN = 12V 60 mΩ
CURRENT LIMIT
I(LIM_HS) High side current limit 1.6 1.8 2.2 A
I(LIM_LS) Low side source current limit 1.3 1.6 1.9 A
OSCILLATOR
Fsw Centre switching frequency 1050 1200 1350 kHz
OVER TEMPERATURE PROTECTION
Thermal Shutdown(1) Rising temperature 160 °C
Hysteresis 10 °C
Hiccup time 32768 Cycles
(1) Not production tested