DC2039A Analog Devices

COULOMB COUNTER ERROR (%) DEMO MANUAL DC2039A LTC4015EUHF Multichemistry Buck Battery Charger with Digital Telemetry System DESCRIPTION Demonstration Circuit 2039A features the LTC 4015EUHF, Configuration of the DC2039A demo board is achieved a Multichemistry Buck Battery Charger with Digital Te- by changing 0 jumpers to indicate chemistry and cell lemetry System, operating as a 2-cell Li-Ion, 8A battery count. The V voltage must then be appropriate for the IN charger. The DC2039A allows configuring the LTC4015 to cell count and chemistry selected. support up to 9 cells for Li-Ion and LiFePO , and 3, 6, or 4 Design files for this circuit board are available. 12 cells for Lead-Acid batteries. Programmable and fully All registered trademarks and trademarks are the property of their respective owners. automatic charge algorithms can be chosen for each of the chemistries. PERFORMANCE SUMMARY Specifications are at T = 25C A SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V DC2039A Input Voltage Range 5 35 V IN V(BAT) DC2039A BAT Turret Pin Voltage Chemistry = Li, Cell Count = 1 ~ 9 Cells 5 35 V (Battery Stack Voltage) Chemistry = Lead-Acid, Cell Count = 12 Cells 5 31.2 V I(BAT) DC2039A Charge Current R = 4m 7.9 8 8.1 A SNSB V(SYS) System Voltage I(SYS) 8A V V V 0.2V IN IN I(SYS) Load Current on System Voltage I(BAT) = 0A 10.7 A DEMO BOARD PROCEDURE: TYPICAL APPLICATION 12V 2-Cell Li-Ion 8A Step-Down Battery Charger Controller Step-Down Charger Efficiency and IN Coulomb Counter Error vs R SNS2 SYS Battery Charge Current 100 0.5 INFET CLP CLN SYS SYSM5 V OUTFET IN 95 INTV CC UVCLFB 90 0.0 DRV CC SMBALERT 85 BST DV CC CONTROLLER 80 0.5 SCL TGATE 75 SDA LTC4015 70 1.0 CELLS0 SW 65 INTV CELLS1 CC BGATE EFFICIENCY 60 1.5 CELLS2 QC ERROR 2P5V CC CHEM0 55 CHEM1 CSPM5 50 2.0 0.1 1 10 RT CSP CHARGE CURRENT (A) V R C SNSB DC2039A TA01b CSN CCREFP BATSENS CCREFM NTCBIAS NTC R NTCBIAS EQ (PADDLE) GND SGND MPPT MPPT ENABLE DC2039A TA01a Rev. D 1 V IN 12V LEAD-ACID 2-CELL Li-Ion EQUALIZE BATTERY CHARGE PACK T R NTC EFFICIENCY (%)DEMO MANUAL DC2039A TABLE OF CONTENTS Description.................................................. 1 DC2039A Graphical User Interface (GUI) .............. 9 Performance Summary ................................... 1 Introduction to the GUI .............................................9 Demo Board Procedure: Typical Application .......... 1 LTC4015 Graphical User Interface (GUI) .............. 10 Table of Contents .......................................... 2 The LTC4015 Main Page Environment .................... 10 List of Figures .............................................. 2 LTC4015 GUI ........................................................... 11 Quick Start Procedure ..................................... 3 LTC4015 GUI Areas ................................................. 12 Configuring Chemistry and Cell Count .................. 4 LTC4015 GUI Popups .............................................. 13 DC2039A Theory of Operation ........................... 5 LTC4015 GUI Tabs .................................................. 14 Introduction to the DC2039A ....................................5 The Dashboard in Detail ................................. 17 Current Mode Buck Regulator ...................................5 The GUI Configuration Tab Detail ...................... 20 Battery Charger ........................................................7 The Charger Settings Tab Detail ........................ 21 Input Current Limit ...................................................7 The JEITA Curve Tab Detail .............................. 23 Ideal Diodes ..............................................................8 The Charge Status Tab Detail ........................... 24 Maximum Power Point Tracking (MPPT) ..................8 The System Tab Detail ................................... 25 Coulomb Counter ......................................................8 The Coulomb Counter Tab Detail ....................... 26 Telemetry System .....................................................8 The Limits and Alerts Tab Detail ....................... 27 2 I C ............................................................................8 Parts List ................................................... 28 Schematic Diagram ...................................... 30 LIST OF FIGURES Figure 1. Test Setup for the DC2039 Demo Board .... 3 Figure 14. The Charge Status Tab ...................... 15 Figure 2. Measuring Input or Output Ripple ........... 4 Figure 15. The System Tab .............................. 15 Figure 3. Chemistry and Cell Count Configuration Figure 16. The Uninitialized Coulomb 0 Jumpers ............................................. 4 Counter Tab ............................................. 16 Figure 4. SW and BST Pin Waveforms ................. 6 Figure 17. The Limits and Alerts Tab .................. 16 Figure 5. BG and TG Pin Waveforms .................... 6 Figure 18. LTC4015 GUI Dashboard Detail ............ 17 Figure 6. Interpreting Register Information in Figure 19. Coulomb Counter Configuration Wizard, the GUI ................................................... 9 Page 1 ................................................... 19 Figure 7. TC4015 Main Page Environment ............ 10 Figure 20. Coulomb Counter Configuration Wizard, Figure 8. LTC4015 GUI Running Within the LTC4015 Page 2 ................................................... 19 Main Page Environment .............................. 11 Figure 21. The GUI Configuration Tab in Detail ...... 20 Figure 9. The LTC4015 GUI is Composed of Two Figure 22. The Charger Settings Tab in Detail ....... 22 Distinct Regions ....................................... 12 Figure 23. The JEITA Curve Tab in Detail ............. 23 Figure 10. All Elements in the GUI Popup Tooltips .. 13 Figure 24. The Charge Status Tab in Detail ........... 24 Figure 11. The GUI Configuration Tab ................. 14 Figure 25. The System Tab in Detail ................... 25 Figure 12. The Charger Settings Tab .................. 14 Figure 26. The Coulomb Counter Tab in Detail ....... 26 Figure 13. The JEITA Curve Tab ........................ 14 Figure 27. The Limits and Alerts Tab in Detail ....... 27 Rev. D 2