TIDT339
june 2023
1
Description
Features
Applications
1
Test Prerequisites
1.1
Voltage and Current Requirements
1.2
Required Equipment
1.3
Testing Conditions
1.4
Considerations
1.5
Dimensions
2
Testing and Results
2.1
Efficiency Graphs and Data
2.1.1
Efficiency Graph: Light Load Performance
2.1.2
Efficiency Graph: Available Output Power Versus Input Power
2.1.3
Efficiency Graph: Full Load Performance
2.1.4
Efficiency Data
17
18
19
2.2
Thermal Images
2.3
Static Output Voltage Variation versus Load
2.3.1
Light Load Range
2.3.2
Light to Full Load Range
2.4
EMI Measurement According to EN55022 Class-B Quasi-Peak Limits
3
Waveforms
3.1
Switching on Q1 (VDS Voltage) at Full Load
3.2
Output Voltage Ripple
3.3
Load Transients
3.4
Start-Up and Shutdown Sequence
3.4.1
Start-Up Sequence
3.4.1.1
Load Current 0 A
3.4.1.2
Load Current 1.7 A
3.4.2
Shutdown Sequence
1.2
Required Equipment
0 V
AC
– 265 V
AC
, 45 Hz – 65 Hz (minimum current limit 1 A
RMS
), AC constant voltage source (VS1)
Electronic load, (constant current range 0 A – 3 A)
Oscilloscope (minimum 100-MHz bandwidth)
Current probe (minimum 100-kHz bandwidth)
Optional: infrared camera
Spectrum analyzer (typical frequency range 9 kHz – 3.5 GHz)
AC Line Impedance Stabilization Network (LISN)
Variable isolation transformer (100 W minimum)