SLUSFX8 September   2026 UCC218302-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Power Ratings
    6. 5.6 Insulation Specifications
    7. 5.7 Electrical Characteristics
    8. 5.8 Switching Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Power Supply
      2. 6.3.2  VCC Undervoltage Lockout (UVLO)
      3. 6.3.3  Input Filters for IN+, IN-, and RST/EN
      4. 6.3.4  Active Pulldown
      5. 6.3.5  Short Circuit Clamping
      6. 6.3.6  Internal Active Miller Clamp
      7. 6.3.7  Desaturation (DESAT) Protection
      8. 6.3.8  Soft Shutdown (SSD)
      9. 6.3.9  Fault (FLT), Reset, and Enable (RST/EN)
      10. 6.3.10 Output Gate Voltage Monitor
      11. 6.3.11 Active Short Circuit (ASC) Support
      12. 6.3.12 Overtemperature Protection
    4. 6.4 Device Functional Modes
  8. 7 Applications and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Application Schematic
      2. 7.2.2 Design Requirements
      3. 7.2.3 Detailed Design Procedure
        1. 7.2.3.1 Input Filters for IN+, IN-, and RST/EN
        2. 7.2.3.2 FLT, RDY, and RST/EN Pin Circuitry
        3. 7.2.3.3 Gate Driver Output Resistors
        4. 7.2.3.4 Overcurrent and Short Circuit Protection With DESAT
      4. 7.2.4 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Third-Party Products Disclaimer
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Mechanical Data

4 Pin Configuration and Functions

UCC218302-Q1 UCC218302-Q1 28 DFP Top View Figure 4-1 UCC218302-Q1 28 DFP Top View
Table 4-1 Pin Functions
PINTYPE(1)DESCRIPTION
NAMENO.
GND1, 14GNDInput power supply and logic ground reference.
NC2, 3, 12, 13, 16, 25—No connection.
IN+4INon-inverting gate driver control input. Tie to VCC if unused.
IN-5IInverting gate driver control input. Tie to GND if unused.
RDY6OPower good for VCC-GND, VDD-COM, and overtemperature. RDY is an open-drain output and can be paralleled with other RDY signals.
FLT7OActive low fault alarm output upon overcurrent or short circuit. FLT is an open drain output and can be paralleled with other faults.
RST/EN8IThe RST/EN serves two purposes:
1) Enables or shuts down the output side. The FET is turned off by a regular turn-off if EN is set to low;
2) Resets the DESAT condition signaled on the FLT pin if RST/EN is set to low for more than 800ns. A reset of FLT is asserted at the rising edge of RST/EN.
OUT_FB9OReal-time output voltage feedback. Leave floating if unused.
VCC10PInput power supply from 3V to 5.5V. Bypass with a >1μF capacitor to GND. Place decoupling capacitor close to the pin.
GD_SEL11IGate drive strength selection input. Drive high to use both sets of outputs. Drive low to use only OUTx1 outputs.
VEE15, 28PNegative supply rail for gate drive voltage. Bypass with a >10µF capacitor to COM. Place decoupling capacitor close to the pin.
ASC217IActive high secondary-side Active Short Circuit input to force output high during system failure events. Tie to COM if unused.
COM18PCommon ground reference. Connect to emitter pin for IGBTs and source pin for MOSFETs.
DESAT19IDesaturation current protection input. Tie to COM if unused.
VDD20PPositive supply rail for gate drive voltage. Bypass with a >10µF capacitor to COM. Place decoupling capacitor close to the pin.
OUTH221OHigh current gate driver output pullup.
OUTL222OHigh current gate driver output pulldown.
OUTH123OLow current gate driver output pullup.
OUTL124OLow current gate driver output pulldown.
SSD26OSoft shutdown pull down for turning off after a DESAT fault. Connect a resistor from this pin to the gate of an IGBT or MOSFET to adjust the shutdown current. Leave floating or tie to VEE if unused.
CLMPI27OInternal active Miller clamp. Connect this pin directly to the gate of the power transistor. Leave floating or tie to VEE if unused.
(1) I = input, O = output, P = power, GND = ground