SLUUCX5 september   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5. 1.5 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  7. 2Hardware
    1. 2.1 Additional Images
    2. 2.2 Using the EVM on a Load with USB-C PD Communication
    3. 2.3 Using the EVM on a Load Without USB-C PD Communication
  8. 3Implementation Results
    1. 3.1 Electrical Performance Specifications
    2. 3.2 Test Setup
      1. 3.2.1 Test Setup Requirements
      2. 3.2.2 Test Setup Diagram
      3. 3.2.3 Test Points
    3. 3.3 Performance Data and Typical Characteristic Curves
      1. 3.3.1  Efficiency Result of 4-Point Average on 20-Vout
      2. 3.3.2  Efficiency Result of 4-Point Average at 15-Vout
      3. 3.3.3  Efficiency Result of 4-Point Average at 9-Vout
      4. 3.3.4  Efficiency Result of 4-Point Average at 5-Vout
      5. 3.3.5  Efficiency Typical Results
      6. 3.3.6  Output Characteristics
      7. 3.3.7  Switching Frequency
      8. 3.3.8  Key Switching Waveforms
      9. 3.3.9  Output Ripple Voltage
      10. 3.3.10 Load Transient Response
      11. 3.3.11 EN55022 Class B Conducted EMI Test Result
      12. 3.3.12 Thermal Images at Full Load (20 V and 3.25 A)
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
      1. 4.2.1 Transformer Details
    3. 4.3 Bill of Materials
  10. 5Additional Information
    1.     Trademarks

4.2.1 Transformer Details

Renco Electronics transformer part number RLTI-1454 is used on this design and wound on an RM8 core set.

GUID-20230818-SS0I-TDL3-ZC4L-Z96DPBVPLMC3-low.jpgFigure 4-4 Transformer Schematic Diagram
Table 4-1 Transformer Specifications at 25°C
PARAMETERVALUEPINS/LEADSTEST CONDITIONS
Inductance (µH)200, ± 15%1 – 2Open all other pins, 100 kHz, 0.1V
Leakage Inductance (µH)3.5 Max.1 – 3Short A - B, 100 kHz, 0.1V
D.C. resistance (Ω)0.220, ±15%1 – 2
D.C. resistance (Ω)0.007 Max.A – B
D.C. resistance (Ω)0.046, ±20%6 – 7
D.C. resistance (Ω)0.100, ±15%

5 - 6

Dielectric (VAC, 60Hz)30001, 6 – A1 mA, 60 Hz, 1 s
Turns-ratios

6:1:1:2

(1-2):(A-B):(6-7):(5-6)1.0V @ 10 kHz to 1 - 3