SLUUCK0A September   2023  – June 2026

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specifications
    4. 1.4 General TI High Voltage Evaluation User Safety Guidelines
  6. 2Hardware
    1. 2.1 Module and Gate Driver Compatibility
      1. 2.1.1 Supported Wolfspeed Modules and Evaluation Platforms
      2. 2.1.2 Supported Gate Drivers
    2. 2.2 System Overview and Functions
      1. 2.2.1 PCB Pinout
      2. 2.2.2 Block Diagram
        1. 2.2.2.1 Primary-Side Power
        2. 2.2.2.2 Primary-Side I/O and Diagnostics
        3. 2.2.2.3 Secondary-Side Bias Supply
        4. 2.2.2.4 Output Stage Gate Loop
        5. 2.2.2.5 Current Booster
        6. 2.2.2.6 Short-Circuit Detection System
          1. 2.2.2.6.1 Short-Circuit Detection - DESAT
          2. 2.2.2.6.2 Short-Circuit Detection - OC
        7. 2.2.2.7 Temperature-Sense System
    3. 2.3 Test Setups and Procedures
      1. 2.3.1 Equipment List
      2. 2.3.2 Power-On and Bias Supply Check
      3. 2.3.3 Output Switching
      4. 2.3.4 AIN-APWM Test
  7. 3Implementation Results
    1. 3.1 EVM Example Measurements
      1. 3.1.1 Short-Circuit Testing
        1. 3.1.1.1 OC Variant: Normal Switching vs Short Circuit Soft Turn-Off
        2. 3.1.1.2 DESAT Variant: Normal Switching vs Short Circuit Soft Turn-Off
      2. 3.1.2 Analog Sensing
    2. 3.2 EVM Tuning
      1. 3.2.1 Adjust Power Supplies
        1. 3.2.1.1 Adjust VDD Bias Supply
        2. 3.2.1.2 Adjust VEE Bias Supply
        3. 3.2.1.3 Switch to Unipolar Bias Supply
        4. 3.2.1.4 Bypass VDD LDO
      2. 3.2.2 Adjust Drive Strength
        1. 3.2.2.1 Without Booster
        2. 3.2.2.2 Enabling/Disabling Booster Stage
      3. 3.2.3 Adaptations for Other ISO5x5x / UCC217xx Variants
        1. 3.2.3.1 Adapting EVM for UCC21732/39
        2. 3.2.3.2 Adapting EVM for UCC21737
        3. 3.2.3.3 Adapting EVM for ISO5451/ISO5851
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Revision History

1.3 Specifications

Recently, wide bandgap SiC FET based power modules are introduced in power electronics instead of Si IGBT because of the excellent conduction and switching performance. Compact driver board UCC21710/50QDWEVM-054 supports SiC modules by reducing parasitics, minimizing switching loss, EMI and providing full required protection and diagnostics features.

Table 1-2 Electrical Specifications
PARAMETERTEST CONDITIONSMINNOMMAXUNIT

SUPPLY VOLTAGES AND CURRENTS

VccVCC supply voltage4.55.05.5V
Vdd2u, Vdd2lVDD supply voltages

From transformer and LDO

15

V
Vee2u, Vee2lVEE supply voltages

From transformer and shunt regulator

-3V
DRIVE CURRENT
IohPeak source currentCLOAD = 10nF10A
IolPeak sink currentCLOAD = 10nF10A
INPUT/OUTPUT SIGNALS
Vinr, VrstrIN+, IN-, RST/EN rising threshold0.7x VCCV
Vinf, VrstfIN+, IN-, RST/EN falling threshold0.3x VCCV
Vinh, VrsthINL+, INU+, RST hysteresis0.1 × VCCV
TIMING PARAMETERS
TriseDrive output rise timeCLOAD = 10nF

33

ns
TfallDrive output fall timeCLOAD = 10nF27ns
TpropPropagation delayCLOAD = 100pF90ns
SHORT CIRCUIT PROTECTION - OC
VocNominal overcurrent threshold0.630.70.77V

Tocfil

OC fault deglitch filter

Ioc = 5mA

120ns
IstoSoft turn-off pull down current

400

mA
VclampMiller Clamp thresholdReference to VEE1.52.02.5V
IclampMiller Clamp currentVCLMPI = 0V, VEE = –2.5V4A

SHORT CIRCUIT PROTECTION - DESAT

Ichg

Blanking capacitor charging current

430

500

570

uA

Tdesatleb

Leading edge blank time

200

ns

Tdesatfil

DESAT deglitch filter

140

ns

Isto

Soft turn-off pull down current

400

mA

Vclmpi

Miller Clamp threshold

Reference to VEE

1.5

2

2.5

V

Iclmpi

Miller Clamp current

VCLMPI = 0V, VEE = –2.5V

4

A

ISOLATION
VisoWithstand isolation voltage for gate driverReinforced, 60s5.7kVrms
CioBarrier capacitance for gate driver20pF
TaOperating Ambient Temperature for gate driver-4025125°C