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AN-2241 SM72445 Evaluation Board

User's Guide

Literature Number: SNVA649

May 2012

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Summary of Contents for AN-2241

Page 1: ...AN 2241 SM72445 Evaluation Board User s Guide Literature Number SNVA649 May 2012...

Page 2: ...5 2 System Overview 5 3 SM72445 Evaluation module Design Specification 6 4 Schematic 9 5 Bill of Material 11 2 Table of Contents SNVA649 May 2012 Submit Documentation Feedback Copyright 2012 Texas In...

Page 3: ...t between the two markers and Soft OVP after the second marker 7 4 Start Up Pattern With Unloaded Output 7 5 Load Connect and Stand By Sequence After Start Up 8 6 Circuit Schematic 9 7 Top Assembly Di...

Page 4: ...ter and a bidirectional FET based switch designed to bypass the DC DC converter for cases when DC DC conversion is not needed and during failure of the DC DC converter over current protection over tem...

Page 5: ...ed off of the SM3320 1A1 power optimizer and shares all of its best in class power optimization features This includes its ability to mitigate real world mismatch its 99 5 peak efficiency and its Pane...

Page 6: ...on will only happen at start up and during reset of the IC PANEL MODE OPERATION The board is configured to use Panel Mode FETs to reach the highest possible efficiency at a 1 1 conversion ratio The SM...

Page 7: ...ease slowly above the input voltage as limited by the slew rate setting programmed Figure 3 Slew Rate Limit between the two markers and Soft OVP after the second marker STARTUP When starting up at no...

Page 8: ...activate the PM mode of the SM72445 by forcing the PM pin low OVER VOLTAGE PROTECTION U11B forces the SM72445 to reset if the output voltage rises above 44V PANEL MODE SWITCH Q5 and Q6 form a bi dire...

Page 9: ...perating at Maximum Power Point If output voltage is close to 40V increase Electronic load current Vary Electronic load current and verify that the SAS is operating at Maximum Power Point in step up l...

Page 10: ...Schematic www ti com Figure 7 Top Assembly Diagram 10 AN 2241 SM72445 Evaluation Board SNVA649 May 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated...

Page 11: ...ti com Bill of Material Figure 8 Bottom Assembly Diagram 5 Bill of Material 11 SNVA649 May 2012 AN 2241 SM72445 Evaluation Board Submit Documentation Feedback Copyright 2012 Texas Instruments Incorpor...

Page 12: ...uctor MBR130T1G D8 D10 Diode Schottky 30V 0 2A SOT 23 2 Diodes Inc BAT54S 7 F J1 J2 J3 J4 PC Quick Fit 0 250 Horizontal Tab 4 Keystone Electronics 4910 L1 Inductor 20 H EFD 30 core 1 Pulse Electronics...

Page 13: ...603 1 Vishay Dale CRCW060326K1FKEA R63 RES 40 2k 1 0 1W 0603 1 Vishay Dale CRCW060340K2FKEA R71 RES 76 8k 1 0 125W 0805 1 Vishay Dale CRCW080576K8FKEA R73 RES 23 2k 1 0 1W 0603 1 Vishay Dale CRCW06032...

Page 14: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

Page 15: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments SM72445EVM NOPB...

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