SLUUCI9A
January 2022 – December 2022
UCC28781
Abstract
Trademarks
1
Introduction
2
General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
3
Description of EVM
4
Electrical Performance Specifications of EVM
5
Schematic Diagram of EVM
6
Operating the EVM from a DC or an AC Source
6.1
Typical Applications
6.2
Using the EVM with a DC Voltage Source
6.3
Using the EVM with an AC Voltage Source
7
Test Set-ups
7.1
Test Set-up Requirements
7.1.1
Test Set-up Requirements for DC Input
7.1.2
Test Set-up Requirements for AC Input
7.2
Test Set-up Diagrams
7.3
Terminals and Test Points
8
Performance Data and Typical Characteristic Curves
8.1
Table of Efficiency Measurements with DC Input
8.2
Table of Efficiency Measurements with AC Input
8.3
Efficiency Graphs with DC Input Voltage (Typical Results)
8.4
Switching Frequencies in Various Operating Modes
8.5
Key Switching Waveforms and Operating Mode Load Current
8.6
Thermal Images at Full Load (15 V, 4.0 A) with DC and AC Inputs
9
Transformer Details
10
EVM Assembly and Layout
11
List of Materials
12
Revision History
8.6
Thermal Images at Full Load (15 V, 4.0 A) with DC and AC Inputs
Figure 8-14
V
IN
= 500 V
DC
, Top-side Transformer Windings: 104°C
Figure 8-16
V
IN
= 250 V
DC
, Top-side Transformer Windings: 88.3°C
Figure 8-18
V
IN
= 264 V
AC
, Top-side Transformer Windings: 98.3°C
Figure 8-20
V
IN
= 180 V
AC
, Top-side Transformer Windings: 91.5°C
Figure 8-15
V
IN
= 500 V
DC
, Bottom-side VS-clamp Zener D12: 102°C
Figure 8-17
V
IN
= 250 V
DC
, Bottom-side SR-FET gate-drive R11: 86.9°C
Figure 8-19
V
IN
= 264 V
AC
, Bottom-side SR-FET gate-drive R11: 93.7°C
Figure 8-21
V
IN
= 180 V
AC
, Bottom-side SR-FET gate-drive R11: 88.6°C