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

5 Pin Configuration and Functions

GUID-E0FB186C-75EE-4B56-A979-7593DF679C46-low.gifFigure 5-1 D Package 8-Pin SOIC Top View
Pin Functions
PINI/O(1)DESCRIPTION
NameD
HB2PHigh-side bootstrap supply. The external bootstrap diode and the external bootstrap capacitor is required to generate bootstrap supply from VDD. Connect positive side of the bootstrap capacitor and cathode of an external diode to this pin. The external diode should be 100V (minimum) rated. Higher voltage rated diode is acceptable too. Typical recommended value of HB bypass capacitor is 0.1 μF, This value primarily depends on the gate charge of the high-side MOSFET.
HI5IHigh-side input.
HO3OHigh-side output. Connect to the gate of the high-side power MOSFET or one end of external gate resistor, when used.
HS4PHigh-side source connection. Connect to source of high-side power MOSFET. Connect negative side of bootstrap capacitor to this pin.
LI6ILow-side input
LO8OLow-side output. Connect to the gate of the low-side power MOSFET or one end of external gate resistor, when used.
VDD1PPositive supply to the low-side gate driver. Decouple this pin to VSS. Typical decoupling capacitor value is 1 μF. When using an external boot diode, connect the anode to this pin. If series resistor is used in series with the boot diode then connect one end of series boot resistor to this pin and other end of the resistor should be connected to the anode of the external boot diode.
VSS7GNegative supply terminal for the device which is generally the system ground.
(1) P = Power, G = Ground, I = Input, O = Output, I/O = Input/Output