SLVSCF8 July   2014 TPS54060-EP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Fixed Frequency PWM Control
      2. 8.3.2  Slope Compensation Output Current
      3. 8.3.3  Low-Dropout Operation and Bootstrap Voltage (Boot)
      4. 8.3.4  Error Amplifier
      5. 8.3.5  Voltage Reference
      6. 8.3.6  Adjusting the Output Voltage
      7. 8.3.7  Enable and Adjusting UVLO
      8. 8.3.8  Slow Start/Tracking Pin (SS/TR)
      9. 8.3.9  Overload Recovery Circuit
      10. 8.3.10 Sequencing
      11. 8.3.11 Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
      12. 8.3.12 Overcurrent Protection and Frequency Shift
      13. 8.3.13 Selecting the Switching Frequency
      14. 8.3.14 How to Interface to RT/CLK Pin
      15. 8.3.15 Power Good (PWRGD Pin)
      16. 8.3.16 Overvoltage Transient Protection (OVTP)
      17. 8.3.17 Thermal Shutdown
      18. 8.3.18 Small Signal Model for Loop Response
      19. 8.3.19 Simple Small Signal Model for Peak Current Mode Control
      20. 8.3.20 Small Signal Model for Frequency Compensation
    4. 8.4 Device Functional Modes
      1. 8.4.1 Pulse Skip Eco-Mode
      2. 8.4.2 DCM and Eco-Mode Boundary
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1  Selecting the Switching Frequency
        2. 9.2.2.2  Output Inductor Selection (LO)
        3. 9.2.2.3  Output Capacitor
        4. 9.2.2.4  Catch Diode
        5. 9.2.2.5  Input Capacitor
        6. 9.2.2.6  Slow Start Capacitor
        7. 9.2.2.7  Bootstrap Capacitor Selection
        8. 9.2.2.8  UVLO Set Point
        9. 9.2.2.9  Output Voltage and Feedback Resistors Selection
        10. 9.2.2.10 Compensation
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power Dissipation Estimate
    2. 10.2 Power Supply Considerations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Estimated Circuit Area
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

6 Pin Configuration and Functions

DGQ Package
10 Pins
(Top View)
po_slvscf8.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
BOOT 1 O A bootstrap capacitor is required between BOOT and PH. If the voltage on this capacitor is below the minimum required by the output device, the output is forced to switch off until the capacitor is refreshed.
COMP 8 O Error amplifier output, and input to the output switch current comparator. Connect frequency compensation components to this pin.
EN 3 I Enable pin, internal pullup current source. Pull below 1.2 V to disable. Float to enable. Adjust the input undervoltage lockout (UVLO) with two resistors.
GND 9 — Ground
PH 10 I The source of the internal high-side power MOSFET.
PowerPAD 11 — GND pin must be electrically connected to the exposed pad on the printed circuit board for proper operation.
PWRGD 6 O An open-drain output, asserts low if output voltage is low due to thermal shutdown, dropout, overvoltage, or EN shut down.
RT/CLK 5 I Resistor timing and external clock. An internal amplifier holds this pin at a fixed voltage when using an external resistor to ground to set the switching frequency. If the pin is pulled above the PLL upper threshold, a mode change occurs and the pin becomes a synchronization input. The internal amplifier is disabled and the pin is a high impedance clock input to the internal PLL. If clocking edges stop, the internal amplifier is re-enabled and the mode returns to a resistor set function.
SS/TR 4 I Slow-start and tracking. An external capacitor connected to this pin sets the output rise time. Because the voltage on this pin overrides the internal reference, it can be used for tracking and sequencing.
VIN 2 I Input supply voltage, 3.5 to 60 V.
VSENSE 7 I Inverting node of the transconductance (gM) error amplifier.