TIDT350
October 2023
1
Description
Features
Applications
1
Test Prerequisites
1.1
Voltage and Current Requirements
1.2
Considerations
1.3
Dimensions
2
Testing and Results
2.1
Efficiency and Load Regulation Graphs
2.1.1
Symmetrical Load
2.1.1.1
Efficiency and Loss
2.1.1.2
Load Regulation
2.1.2
Nonsymmetrical Load
2.1.2.1
One Output 50 mA, Other Output Varying
2.1.2.1.1
Efficiency
2.1.2.1.2
Loss
2.1.2.1.3
Load Regulation
2.1.2.1.3.1
Positive Output Voltage
2.1.2.1.3.2
Negative Output Voltage
2.1.2.2
One Output Loaded With 1 kΩ, Other Output is Varying
2.1.2.2.1
Efficiency
2.1.2.2.2
Loss
2.1.2.2.3
Load Regulation
2.1.2.2.3.1
Positive Output Voltage
2.1.2.2.3.2
Negative Output Voltage
2.1.3
Scaling the Output Voltage
2.2
Thermal Images
2.3
Bode Plots With Dynamic Voltage Scaling
3
Waveforms
3.1
Switching
3.1.1
Switchnode SW-GND
3.1.2
SW to P_OUT (D1)
3.1.3
Waveform on D3 Referenced to N_OUT
3.2
Output Voltage Ripple
3.2.1
Positive Output Voltage (P_OUT)
3.2.2
Negative Output Voltage (N_OUT)
3.3
Input Voltage Ripple
3.4
Load Transients
3.5
Start-Up Sequence
3.6
Shutdown Sequence
2.2
Thermal Images
The thermal image is shown in the following figure.
Figure 2-13
Thermal Image 50-mA Output Current on Each Output
Table 2-1 Summery of the Thermal Image
Name
Temperature
D1
35.5°C
L1
35.8°C
U1
38.9°C