SNVSBO5B December   2019  – May 2021 UCC12040

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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  Power Ratings
    6. 6.6  Insulation Specifications
    7. 6.7  Safety-Related Certifications
    8. 6.8  Safety Limiting Values
    9. 6.9  Electrical Characteristics
    10. 6.10 Switching Characteristics
    11. 6.11 Insulation Characteristics Curves
    12. 6.12 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 Enable and Disable
      2. 7.3.2 UVLO, Power-Up, and Power-Down Behavior
      3. 7.3.3 VISO Load Recommended Operating Area
      4. 7.3.4 Thermal Shutdown
      5. 7.3.5 External Clocking and Synchronization
      6. 7.3.6 VISO Output Voltage Selection
      7. 7.3.7 Electromagnetic Compatibility (EMC) Considerations
    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 VISO Output 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 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical and Packaging Information

Package Options

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

8.2.1 Design Requirements

To design using UCC12040, a few simple design considerations must be evaluated. Table 8-1 shows some recommended values for a typical application. See Section 9 and Section 10 sections to review other key design considerations for the UCC12040.

Table 8-1 Design Parameters
PARAMETERRECOMMENDED VALUE
Input supply voltage, VINP4.5 V to 5.5 V
Decoupling capacitance between VINP and GNDP10 µF, 16 V, ± 10%, X7R
Decoupling capacitance between VISO and GNDS (1)10 µF, 16 V, ± 10%, X7R
Optional additional capacitance on VISO or VINP to reduce high-frequency ripple0.1 µF, 50 V,± 10%, X7R
Pull-up resistor from SYNC_OK to VINP, RPU100 kΩ
Pull-up resistor from SEL to VISO for 5.0V output voltage mode, RSEL0 Ω
Pull-up resistor from SEL to VISO for 5.4V output voltage mode, RSEL100 kΩ
Optional SYNC signal impedance-matching resistor, RSYNCMatch source — typical values are 50 Ω, 75 Ω, 100 Ω, or 1 kΩ
External clock signal applied on SYNC16 MHz
(1) See Section 8.2.2.1 section.