Microsemi LX7165 User Manual Download

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LX7165 EVAL BOARD USER GUIDE

Microsemi

Analog Mixed Signal Group

One Enterprise Aliso Viejo, CA 92656 USA (800) 713-4113, (949) 380-6100



2012

Rev. 0.2, 2013-10-23

Rev. 1.0, 2013-10-23

LX7165 EVALUATION BOARD

USER GUIDE

LX7165 5 Amp Step Down Converter

Summary of Contents for LX7165

Page 1: ...RD USER GUIDE Microsemi Analog Mixed Signal Group One Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Copyright 2012 Rev 0 2 2013 10 23 LX7165 EVALUATION BOARD USER GUIDE LX7165 5 Amp Step Down Converter ...

Page 2: ...0 23 Table of Contents Introduction to Product 1 Key Features 2 Applications 2 Part Specific Information 3 Evaluation Board Schematic 3 Basic Connection Instructions 4 LX7165 I2 C GUI 5 Recommended Operating Conditions 6 PCB Layout of Evaluation Board 7 Bill of Material 11 Efficiency Plot 12 Dynamic Load Response Scope Shots 13 Start up Scope Shots 16 Dimax Sub20 Installation 20 ...

Page 6: ...rise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 4 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Basic Connection Instructions Figure 2 Power Supply and Load Connection with I2 C Implemented Figure 3 Power Supply and Load Connection without I2 C Implemented ...

Page 10: ... EVAL BOARD USER GUIDE Microsemi Analog Mixed Signal Group One Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 8 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Figure 6 Top Silkscreen ...

Page 11: ...GUIDE Microsemi Analog Mixed Signal Group One Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 9 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Figure 7 Layer 1 Top Layer Figure 8 Layer 2 Ground Layer ...

Page 12: ...IDE Microsemi Analog Mixed Signal Group One Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 10 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Figure 9 Layer 3 Sense Layer Figure 10 Layer 4 Bottom Layer ...

Page 14: ...56 USA 800 713 4113 949 380 6100 Page 12 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Efficiency Plot Figure 11 Efficiency Plot of LX7165 03CSP 0 00 10 00 20 00 30 00 40 00 50 00 60 00 70 00 80 00 90 00 100 00 10 100 1000 Efficiency Load Current mA LX7165 03CSP Vout 0 97V Efficiency PWM PSM ...

Page 15: ...terprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 13 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Dynamic Load Response Scope Shots Dynamic load response with 0 5 2 5A load Figure 12 Dynamic Load Response with 0 5 2 5A Load CH2 VOUT CH4 Load Current ...

Page 16: ...Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 14 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Dynamic load response with 0 5 2 5A load Rising Edge Figure 13 Dynamic Load Response Rising Edge with 0 5 2 5A Load CH2 VOUT CH3 SW CH4 Load Current ...

Page 17: ...nterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 15 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Dynamic load response with 0 5 2 5A load Falling Edge Figure 14 Dynamic Load Response Falling Edge with 0 5 2 5A Load CH2 VOUT CH3 SW CH4 Load Current ...

Page 18: ...ixed Signal Group One Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 16 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Start up Scope Shots Start up with ENABLE toggled Figure 15 Startup with ENABLE toggled CH2 EN CH3 VOUT ...

Page 19: ...emi Analog Mixed Signal Group One Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 17 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Soft Start with VIN tied to EN Figure 16 Soft start VIN tied to ENABLE CH3 VOUT ...

Page 20: ...ignal Group One Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 18 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Start up when VIN 4 5V Load 0 5Ohm Figure 17 Start Up When Vin 4 5V Load 0 5ohm CH1 PG CH3 VOUT CH4 Inductor Current ...

Page 21: ... Enterprise Aliso Viejo CA 92656 USA 800 713 4113 949 380 6100 Page 19 Copyright 2012 Rev 0 1 2013 10 23 Rev 1 0 2013 10 23 Start up when VIN 4 5V Load 0 5Ohm Rising Edge Figure 18 Zoomed in Rising Edge of Start Up When VIN 4 5V Load 0 5ohm CH3 VOUT CH4 Inductor Current ...