User’s Guide
Using the LM2105EVM
ABSTRACT
This user's guide describes the characteristics, operation, and use of the LM2105 Evaluation Module (EVM). A
complete schematic diagram, PCB layouts, and BOM are included in this document.
Table of Contents
1 Introduction.............................................................................................................................................................................2
2 Description.............................................................................................................................................................................. 2
2.1 Features............................................................................................................................................................................. 2
2.2 I/O Description................................................................................................................................................................... 3
3 Electrical Specifications........................................................................................................................................................ 3
4 Test Summary......................................................................................................................................................................... 4
4.1 Definitions.......................................................................................................................................................................... 4
4.2 Equipment.......................................................................................................................................................................... 4
4.3 Equipment Setup................................................................................................................................................................4
5 Power-Up and Power-Down Procedure................................................................................................................................ 6
5.1 Power Up........................................................................................................................................................................... 6
5.2 Power Down.......................................................................................................................................................................6
6 Operation With External Bootstrap Diode............................................................................................................................7
7 Typical Performance Waveforms (CL = 1000 pF)................................................................................................................. 8
7.1 Propagation Delays............................................................................................................................................................8
8 Schematic................................................................................................................................................................................9
9 Layout Diagrams...................................................................................................................................................................10
10 Bill of Materials................................................................................................................................................................... 12
List of Figures
Figure 4-1. Bench Setup Diagram and Configuration..................................................................................................................5
Figure 5-1. Example Input and Output Waveforms (green and magenta are PWM inputs, blue and dark blue are driver
outputs).................................................................................................................................................................................... 6
Figure 7-1. INH and GH Propagation Delay Waveforms (green is INH, blue is GH)................................................................... 8
Figure 7-2. INL and GL Propagation Delay Waveforms (green is GL, dark blue is GL).............................................................. 8
Figure 8-1. LM2105 Schematic....................................................................................................................................................9
Figure 9-1. Top Overlay............................................................................................................................................................. 10
Figure 9-2. Top Layer.................................................................................................................................................................10
Figure 9-3. Bottom Layer........................................................................................................................................................... 11
Figure 9-4. Bottom Overlay........................................................................................................................................................11
List of Tables
Table 2-1. Connection Descriptions............................................................................................................................................. 3
Table 4-1. Two-Channel Function Generator Settings.................................................................................................................4
Table 4-2. Oscilloscope Settings..................................................................................................................................................4
Table 10-1. LM2105 Bill of Materials..........................................................................................................................................12
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SLUUCS3 – FEBRUARY 2023
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