SLVSEY5C March   2019  – August 2019 TPS568230

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application
      2.      Efficiency vs Output Current ECO-mode
  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 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 PWM Operation and D-CAP3 Control
      2. 7.3.2 Soft Start
      3. 7.3.3 Large Duty Operation
      4. 7.3.4 Power Good
      5. 7.3.5 Over Current Protection and Undervoltage Protection
      6. 7.3.6 Over Voltage Protection
      7. 7.3.7 UVLO Protection
      8. 7.3.8 Output Voltage Discharge
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Light Load Operation
      2. 7.4.2 Advanced Eco-mode Control
      3. 7.4.3 Out of Audio Mode
      4. 7.4.4 Force CCM Mode
      5. 7.4.5 Mode Selection
      6. 7.4.6 Standby Operation
  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 External Component Selection
          1. 8.2.2.1.1 Output Voltage Set Point
          2. 8.2.2.1.2 Inductor Selection
          3. 8.2.2.1.3 Output Capacitor Selection
          4. 8.2.2.1.4 Input Capacitor Selection
      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 Third-Party Products Disclaimer
    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

8.2.2.1.3 Output Capacitor Selection

After selecting the inductor the output capacitor needs to be optimized. In DCAP3™, the regulator reacts within one cycle to the change in the duty cycle so the good transient performance can be achieved without needing large amounts of output capacitance. The recommended output capacitance range is given in Table 3.

Ceramic capacitors have very low ESR, otherwise the maximum ESR of the capacitor should be less than VOUT(ripple)/IOUT(ripple).

Table 3. Recommended Component Values

VOUT (V) RLOWER (kΩ) RUPPER (kΩ) Fsw (kHz) LOUT (µH) COUT(min) (µF) COUT(max) (µF) CFF (PF)
0.6 10 0 600 0.47 66 500 -
800 0.33 66 500 -
1000 0.27 66 500 -
1 30 20 600 0.68 66 500 -
800 0.47 66 500 -
1000 0.33 66 500 -
3.3 20 90 600 1.5 66 500 47-330
800 1.2 66 500 47-330
1000 1 66 500 47-330
5.0 30 220 600 2.2 66 500 47-330
800 1.5 66 500 47-330
1000 1.2 66 500 47-330