SLUSFC2 august   2023 UCC23113

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Function
  7. 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 Electrical Characteristics
    8. 6.8 Switching Characteristics
    9. 6.9 Typical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1 Propagation Delay, Rise Time and Fall Time
    2. 7.2 IOH and IOL testing
    3. 7.3 CMTI Testing
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power Supply
      2. 8.3.2 Input Stage
      3. 8.3.3 Output Stage
      4. 8.3.4 Protection Features
        1. 8.3.4.1 Undervoltage Lockout (UVLO)
        2. 8.3.4.2 Active Pulldown
        3. 8.3.4.3 Short-Circuit Clamping
    4. 8.4 Device Functional Modes
      1. 8.4.1 ESD Structure
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Selecting the Input Resistor
        2. 9.2.2.2 Gate Driver Output Resistor
        3. 9.2.2.3 Estimate Gate-Driver Power Loss
        4. 9.2.2.4 Estimating Junction Temperature
        5. 9.2.2.5 Selecting VDD Capacitor
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 PCB Material
  13. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Development Support
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.2.1 Selecting the Input Resistor

The input resistor limits the current that flows into the e-diode when it is forward biased. The threshold current IFLH is 2.8 mA typ. The recommended operating range for the forward current is 7 mA to 16 mA (e-diode ON). All the electrical specifications are ensured in this range. The resistor should be selected such that for typical operating conditions, IF is 10 mA. Following are the list of factors that will affect the exact value of this current:

  1. Supply Voltage VSUP variation
  2. Manufacturer's tolerance for the resistor and variation due to temperature
  3. e-diode forward voltage drop variation (at IF=10 mA, VF= typ 2.1 V, min 1.8 V, max 2.4 V, with a temperature coefficient < 1.35 mV/°C and dynamic impedance < 1 Ω)

See Figure 9-2 for the schematic using using a single buffer and anode resistor combination to drive the input stage of UCC23113. The input resistor can be selected using Equation 1.

GUID-20230830-SS0I-0N4P-SX2R-KZLNKTWFGQ2K-low.svg Figure 9-2 Driving the Input Stage of UCC23113 with One Buffer and Anode Resistor
Equation 1. R E X T = V S U P - V F I F - R OH_buf

Table 9-2 shows the range of values for REXT for Figure 9-2. The assumptions used in deriving the range for REXT are as follows:

  1. Target forward current IF is 7 mA min, 10 mA typ and 16 mA max
  2. e-diode forward voltage drop is 1.8 V to 2.
  3. VSUP (Buffer supply voltage) is 5 V with ±5% tolerance
  4. Manufacturer's tolerance for REXT is 1%
  5. ROH (buffer output impedance in output "High" state) is 13 Ω min, 18 Ω typ and 22 Ω max

Table 9-2 REXT Values to Drive the Input Stage
REXT Ω

Configuration

 Min Typ Max
Single Buffer and REXT 204 272 311