SLUSE21B June   2020  – April 2022 UCC27288

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 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 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 Start-up and UVLO
      2. 7.3.2 Input Stages
      3. 7.3.3 Level Shifter
      4. 7.3.4 Output Stage
      5. 7.3.5 Negative Voltage Transients
    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 Select Bootstrap and VDD Capacitor
        2. 8.2.2.2 External Bootstrap Diode and Series Resistor
        3. 8.2.2.3 Estimate Driver Power Losses
        4. 8.2.2.4 Selecting External Gate Resistor
        5. 8.2.2.5 Delays and Pulse Width
        6. 8.2.2.6 VDD and Input Filter
        7. 8.2.2.7 Transient Protection
      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 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

7.4 Device Functional Modes

The device operates in normal mode and UVLO mode. See Start-up and UVLO for more information on UVLO operation mode. In normal mode when the VDD and VHB–HS are above UVLO threshold, the output stage is dependent on the states of the HI and LI pins. The output HO and LO will be low if input state is floating.

Table 7-3 Input/Output Logic in Normal Mode of Operation
HI LI HO (1) LO (2)
H H H H
L H L H
H L H L
L L L L
Floating L L L
Floating H L H
L Floating L L
H Floating H L
Floating Floating L L
(1) HO is measured with respect to HS
(2) LO is measured with respect to VSS