SLUSD31F October   2018  – July 2026 UCC23513

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Function
  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  Safety-Related Certifications
    8. 5.8  Safety Limiting Values
    9. 5.9  Electrical Characteristics
    10. 5.10 Switching Characteristics
    11. 5.11 Insulation Characteristics Curves
    12. 5.12 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1 Propagation Delay, Rise Time and Fall Time
    2. 6.2 IOH and IOL testing
    3. 6.3 CMTI Testing
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Power Supply
      2. 7.3.2 Input Stage
      3. 7.3.3 Output Stage
      4. 7.3.4 Protection Features
        1. 7.3.4.1 Undervoltage Lockout (UVLO)
        2. 7.3.4.2 Active Pulldown
        3. 7.3.4.3 Short-Circuit Clamping
    4. 7.4 Device Functional Modes
      1. 7.4.1 ESD Structure
  9. 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 Selecting the Input Resistor
        2. 8.2.2.2 Gate Driver Output Resistor
        3. 8.2.2.3 Estimate Gate-Driver Power Loss
          1. 8.2.2.3.1 Case 1 - Linear Pull-Up and Pull-Down Resistor
          2. 8.2.2.3.2 Case 2 - Nonlinear pull-up and pull-down Resistor
        4. 8.2.2.4 Estimating Junction Temperature
        5. 8.2.2.5 Selecting VCC Capacitor
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
      3. 8.4.3 PCB Material
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.2.2.1 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 typically 2.8mA. The recommended operating range for the forward current is from 7mA to 16mA (e-diode ON). In this range, all the electrical specifications are verified. Select the resistor such that for typical operating conditions, IF is 10mA. Following are the list of factors that affect the exact value of this current:

  • Supply Voltage VSUP variation
  • Manufacturer tolerance for the resistor and variation due to temperature
  • e-diode forward voltage drop variation (at IF=10mA, VF= typical 2.1V, minimum 1.8V, maximum 2.4V, with a temperature coefficient < 1.35mV/°C and dynamic impedance < 1Ω)
See Figure 8-2 for the schematic using a single NMOS and split resistor combination to drive the input stage of UCC23513. Select the input resistor using the equation shown.

UCC23513 Configuration 1: Driving the input stage of UCC23513 with a single NMOS and split resistorsFigure 8-2 Configuration 1: Driving the input stage of UCC23513 with a single NMOS and split resistors

Figure 8-3 shows driving the input stage of UCC23513 using one buffer. Figure 8-4 shows driving the input stage of UCC23513 using two buffers.

UCC23513 Configuration 2: Driving the input stage of UCC23513 with one Buffer and split resistorsFigure 8-3 Configuration 2: Driving the input stage of UCC23513 with one Buffer and split resistors
UCC23513 Configuration 3: Driving the input stage of UCC23513 with 2 buffers and split resistorsFigure 8-4 Configuration 3: Driving the input stage of UCC23513 with 2 buffers and split resistors

Table 8-2 shows the range of values for REXT for the 3 different configurations shown in Figure 8-2, Figure 8-3 and Figure 8-4.The assumptions used in deriving the range for REXT are as follows:

  • Target forward current IF is 7mA minimum, 10mA typical and 16mA maximum
  • e-diode forward voltage drop is from 1.8V to 2.4V
  • VSUP (Buffer supply voltage) is 5V with ±5% tolerance
  • Manufacturer tolerance for REXT is 1%
  • NMOS resistance is from 0.25Ω to 1.0Ω (for configuration 1)
  • ROH(buffer output impedance in output "High" state) is 13Ω minimum, 18Ω typical and 22Ω maximum
  • ROL(buffer output impedance in "Low" state) is 10Ω minimum, 14Ω typical and 17Ω maximum

Table 8-2 REXT Values to Drive The Input Stage
REXT Ω

Configuration

MinimumTypicalMaximum
Single NMOS and REXT218290331
Single Buffer and REXT204272311
Two Buffers and REXT194259294