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Linear ANALOG DEVICES DC2732A-A Manual

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Summary of Contents for Linear ANALOG DEVICES DC2732A-A

  • Page 1 We have 45,000 LP502030-PCM-NTC-LD-A02554 - EEMB - Lithium Battery Rectangular 3.7V 250mAh Rechargeable in stock now. Starting at $0.034. This EEMB part is fully warrantied and traceable. 00000005981LF-000 DC2732A-A EOS Power ANALOG DEVICES Buy Now Buy Now Looking for a discount? Check out our current promotions! Give us a call 1-855-837-4225...

  • Page 2: Description

    DEMO MANUAL DC2732A LTC2949 Battery Stack Monitor DESCRIPTION The DC2732A demonstrates a high voltage battery pack The LTC2949 is typically powered from an isolated sup- monitor based on the 2949. The LTC2949 is a high ply and directly connected to the battery stack on the low ®...

  • Page 3: Table Of Contents

    DEMO MANUAL DC2732A TABLE OF CONTENTS Description..........1 Appendix A: Usage of SPI Isolator Instead of isoSPI ..32 Board Photo ..........1 Appendix B: CAN Based Evaluation ....33 Performance Summary ........3 Hardware Requirements .........33 Hardware Setup ..........4 Software Requirements ..........33 Hardware Description ........

  • Page 4: Performance Summary

    DEMO MANUAL DC2732A PERFORMANCE SUMMARY denotes the specifications which apply over the full operating temperature range (–40°C to 125°C), otherwise specifications are at T = 25°C. The test conditions are V = 12.0V, JP11 set to 12.4V operation, unless otherwise noted. JP4–JP6 set to isoSPI, unless otherwise noted. SYMBOL PARAMETER CONDITIONS...

  • Page 5: Hardware Setup

    DEMO MANUAL DC2732A HARDWARE SETUP The DC2732A can be setup for different applications. connected to ADV and GND (e.g., Analog Devices inte- The power supply and communication interface can be grated isolated DC-to-DC converters – isoPower). a nonisolated connection via J4 or the individual turrets The communication mode (SPI or isoSPI) must be set , MISO, MOSI, SCK, CS, ADV , GND.
  • Page 6 DEMO MANUAL DC2732A HARDWARE DESCRIPTION a) Top b) Bottom Figure 2. DC2732A2 Rev. 0...

  • Page 7: Hardware Description

    DEMO MANUAL DC2732A HARDWARE DESCRIPTION JUMPER FUNCTIONS JUMPER DEFAULT NAME DESCRIPTION isoSPI Term Enable/disable 100e isoSPI bus termination. If LTC2949 is the only device on the isoSPI bus or connected on top of a cell monitor isoSPI daisy chain, the termination must be enabled. If LTC2949 is connected in parallel to a daisy chain (LTC2949 is fed into the input of a daisy chain via J1, J2) of cell monitors, the termination must be disabled.

  • Page 8: Connector Functions

    DEMO MANUAL DC2732A HARDWARE DESCRIPTION CONNECTOR FUNCTIONS CONNECTOR NAME DESCRIPTION J1, J2 SPI Master, Cell isoSPI connectors. Pin 1 (iso–) and Pin 2 (iso+) of both connectors are connected in parallel. Thus, any of the two Monitors connectors can be used as the interface to the isoSPI master. For clarity, they are still named differently to indicate one connector can be used to interface to the isoSPI master and one to a cell monitor.

  • Page 9: Connector J3 Pin Assignment

    DEMO MANUAL DC2732A HARDWARE DESCRIPTION CONNECTOR J3 PIN ASSIGNMENT NAME DESCRIPTION NAME DESCRIPTION LTC2949’s GND LTC2949’s 3V Reference Voltage Output VBATM Negative BAT Input VBATP Positive BAT Input NTC2+V2 Analog Input, a 100k NTC/R is Connected Onboard Analog Input V3 Analog Input V4 Analog Input V5 Analog Input V6...

  • Page 10: Solder Jumpers And Other Functions

    DEMO MANUAL DC2732A HARDWARE DESCRIPTION SOLDER JUMPERS AND OTHER FUNCTIONS PCB PICTURE DESCRIPTION SJ1–SJ4 Normally closed solder jumpers to allow disconnection of onboard shunt RSNS1. Those are small PCB footprints that can be cut with a small knife. SJ1, SJ2 allow to disconnect I2P , I2M from the shunt. SJ3, SJ4 allow to disconnect I1P , I1M from the shunt.

  • Page 11: Hardware Setup Examples

    DEMO MANUAL DC2732A HARDWARE SETUP EXAMPLES The DC2732A demo board can be operated in four differ- see performance summary) supply needs to be connected ent setup options. to turrets LGND and V on the lower left side of the demo board. 1.

  • Page 12: Option 2: Isolated Isospi Dc2617 Setup

    DEMO MANUAL DC2732A HARDWARE SETUP EXAMPLES OPTION 2: ISOLATED ISOSPI DC2617 SETUP Figure 5. Isolated isoSPI Communication via LTC6820 on DC2617, Isolated Supply via Turrets V , LGND. Optional CAN Interface via DC2617; The Linduino Sketchbook for LTC2949/DC2732A Also Contains a Software Example, that Allows Measurements Done by LTC2949 to Be Controlled and Communicated Into a CAN Environment;...

  • Page 13: Option 3: Isolated Isospi Dc1941 Setup

    DEMO MANUAL DC2732A HARDWARE SETUP EXAMPLES OPTION 3: ISOLATED ISOSPI DC1941 SETUP Figure 6. Isolated isoSPI Communication via LTC6820, Isolated Supply via Turrets V , LGND; Note the Jumper Settings of DC1941 (LTC6820) Demo Board for Proper isoSPI Communication Rev. 0...

  • Page 14: Option 4: Isolated Isospi Dc2792 Setup

    DEMO MANUAL DC2732A HARDWARE SETUP EXAMPLES OPTION 4: ISOLATED ISOSPI DC2792 SETUP Figure 7. Isolated isoSPI Communication via Dual LTC6820 Demo Board (DC2792), Isolated Supply via Turrets V , LGND; Note: DC2792 Can Also Be Plugged on Top of DC2026 Without Using the 14-Pin Flat Ribbon Cable Rev.

  • Page 15: Option 5: Isolated Reversible Isospi Dc2792, Dc2350 Setup

    DEMO MANUAL DC2732A HARDWARE SETUP EXAMPLES OPTION 5: ISOLATED REVERSIBLE ISOSPI DC2792, DC2350 SETUP Figure 8. Isolated, Reversible isoSPI Communication via Dual LTC6820 Demo Board (DC2792) Together with DC2350 (LTC6812-1/LTC6813-1) Rev. 0...

  • Page 16: Connecting A High Voltage Battery

    DEMO MANUAL DC2732A HARDWARE SETUP EXAMPLES CONNECTING A HIGH VOLTAGE BATTERY Figure 9. Connecting a High Voltage Battery with Resistive Divider to DC2732 for Low Side Current Sense Operation Figure 10. Connecting a High Voltage Battery with Resistive Divider to DC2732 for Low Side Current Sense Operation with Chassis- GND Isolation Measurement;...

  • Page 17: Software Setup Overview

    DEMO MANUAL DC2732A SOFTWARE SETUP OVERVIEW The DC2732A can be controlled by the Linduino One ARDUINO IDE SETUP (DC2026) board. The Linduino is an Arduino compatible 1. Download and install the Arduino IDE to the PC. platform with example code that will demonstrate how to Detailed instructions can be found under the control multicell battery stack monitor ICs and the stack quick start tab.
  • Page 18 DEMO MANUAL DC2732A SOFTWARE SETUP OVERVIEW 5. Select the correct Arduino compatible microcontroller board. Under the Tools menu, select Board → Arduino/ Genuino Uno with the “•” black dot symbol. Figure 13. Arduino IDE, Board Setting 6. Open one of the programs, called “Sketches,” associated with the DC2732A. In this example DC2732A_BASIC Sketch will be opened.
  • Page 19 DEMO MANUAL DC2732A SOFTWARE SETUP OVERVIEW 7. Upload the DC2732A_BASIC Sketch onto the Linduino by clicking on the Upload button on the top left corner. When this process is completed there will be a “Done Uploading” message on the bottom left corner. Figure 15.

  • Page 20: Ltc2949 Windows Gui Usage

    DEMO MANUAL DC2732A SOFTWARE SETUP OVERVIEW LTC2949 GUI SETUP the PC), run the QuikEval Software. QuikEval should auto- detect the DC2732A and check if the LTC2949 GUI is already Various features of the DC2732A can be demonstrated installed. QuikEval will automatically download and install by using Analog Devices’...

  • Page 21: Operation Control

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE the GUI to be adjusted to any screen size and to show only the information that is of interest for a given application without overwhelming the user with the large feature-set of the LTC2949. Figure 19.
  • Page 22 DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE 13. Configure Fast Channel (only possible when in Continuous mode). 14. Configure AUX multiplexer. 15. Set NTC parameters (requires ADJUPD to become effective). 16. Configure sense resistor’s nominal value and ratio in case two separate sense resistors are used (only change of ratio requires ADJUPD to become effective).

  • Page 23: Multimeters

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE In case the GUI is not connected to the device, all con- clicked. If Register Auto Read is enabled, the Time Base trols but the green “Connect Device via USB” button are Control values won’t be updated if the user is making disabled.

  • Page 24: Plots/Data Collection

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE 1 multimeter in Figure 23 shows the context menu for • Enable Register Auto Read. unit selection. • Optional: clear device’s accumulators, trackers and The Charge, Energy, Time multimeters include a calcu- GUI’s plots to have a clean start for data acquisition. lated mean power display.

  • Page 25: Plot Zoom Fit

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE 6. Display/Hide Channels. 4. Show label with data point values by left mouse click on a data line. 7. Display/Hide Trackers (minimum/maximum values, not available for fast channel and not for accumulated 5. Zoom vertically by rotating mouse wheel over quantities like charge, energy).

  • Page 26: Change Thresholds On-The-Fly

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE 6. Zoom horizontally by rotating mouse wheel over CHANGE THRESHOLDS ON-THE-FLY the X-Axis. Once the thresholds are visible, they can be dragged by 7. Zoom vertically and horizontally by rotating mouse the mouse and set to a new desired value. Dragging is wheel over the plot area.

  • Page 27: Plot Trackers

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE Figure 32. Import Plot CSV Data Into Excel PLOT TRACKERS The accumulated quantities charge and energy are plotted over the corresponding time base. Whenever a triplet of The trackers show the minimum and maximum values of charge, energy and time of any of the two accumulator the non-accumulated quantities (Current, Voltage, etc.).

  • Page 28: Register Context Menu

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE Figure 33. Register Map Control LTC2947 after pressing enter or leaving the cell. An entered Format and Details will be explained in the following para- value may be discarded by pressing the Escape button. graphs. The Write and Read command will immediately write or read the selected cell value to or from the device.
  • Page 29 DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE The default cell format is Decimal. All cell values may be The binary and hexadecimal formats are indicated by a changed at once to the physical format, for example. This 0b and 0x suffix. The physical and decimal format can be is done by first selecting all cells, either using the shift key distinguished by the tooltip that is shown after the mouse plus mouse button or by using the Select All function from...

  • Page 30: Register Map Tooltips

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE Figure 37. Tooltip Showing Register Description Figure 38. Tooltip Showing Register Value LSB Size REGISTER MAP TOOLTIPS The register map includes a lot of helpful information shown in tooltips. They appear after the mouse has rested for a short while over an element of the register map.

  • Page 31: Tools Menu

    DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE 8. Go to “Auto Read” menu and select. a. Fast all. b. Page0 Registers/Values. c. Enable. 9. The Plot: “Fast Channel” and the “Fast Channel Multimeter” will show the fast measurements. From the fast channel plot context menu select “Channels” →“BAT…”...
  • Page 32 DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE Figure 42. Auto Read Menu for Basic Operation Example Figure 44. Plot Channels Menu for Basic Operation Example Figure 43. Fast Channel Plot for Basic Operation Example Rev. 0...
  • Page 33 DEMO MANUAL DC2732A LTC2949 WINDOWS GUI USAGE Figure 45. Register Map Access for Basic Operation Example Figure 46. FGPIOCTRL Register Details View to Control GPO1 for Basic Operation Example Figure 47. FGPIOCTRL Register Direct Access for Basic Operation Example Figure 48. Fast Channel Plot for Basic Operation Example Showing Alternating AUX Measurements Rev.

  • Page 34: Appendix A: Usage Of Spi Isolator Instead Of Isospi

    DEMO MANUAL DC2732A APPENDIX A: USAGE OF SPI ISOLATOR INSTEAD OF ISOSPI LTC2949 is shorted to BYP2 which will then also sup- If required by customer, it is also possible to use a SPI iso- ply V of the ADuM141E. Usage of other SPI isolators lator instead of LTC2949’s integrated isoSPI.

  • Page 35: Appendix B: Can Based Evaluation

    DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION The DC2732A can be used in conjunction with the Linduino • DC2732A_CAN.dbf loaded to the CAN analyzer and the DC2617A in a CAN based evaluation and test envi- software. ronment, which is described in the following paragraphs. •...

  • Page 36: Dc2732A_Can: Ltc2949 Can Firmware

    DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION Connect 5V to 12V supply to DC2732A demo board. The DC2732A_CAN uses CAN messages listed in Table Connect Ethernet patch cable between RJ45 connectors 1. See also DC2732A_CAN.dbf / DC2732A_CAN.dbc for of DC2732A and DC2617A. scaling factors and units.
  • Page 37 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION Table 1. CAN Messages with Measurement Values Send by DC2732A_CAN NAME SIGNAL T, [BYTES], BITS CFG2949 FLAG DESCRIPTION 0x110 IP1V Int, [2:0], 24 MEAS_I1 Current1 Int, [5:3], 24 MEAS_P1 Power1 Int, [7:6], 16 MEAS_BAT Battery Voltage P1 Will Be Reported by This Message If P1ASV Flag is Not Set.
  • Page 38 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION Table 2. CAN Messages Send to DC2732A_CAN to Configure Fast Measurements NAME SIGNAL T, [BYTE], BITS DESCRIPTION 0x11D FASTRQ SAMPLES UInt, [1:0], 16 Number of samples to be read on demand or per cycle. Or number of samples of moving average filter for I2.
  • Page 39 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION Table 4. CAN Message Send by DC2732A_CAN to Signal Errors NAME SIGNAL T, [BYTE], BITS DESCRIPTION 0x11E COMMERR Bool, [0] (4) FIFOWROVR Bool, [0] (5) FIFOTAGERR Bool, [0] (6) OTHER Bool, [0] (7) TIMEOUT Bool, [0] (3) FIFOALLERR...
  • Page 40 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION Table 5. CAN Message Received by DC2732A_CAN to Configure Measurements Name Signal T, [Byte], Bits Description MEAS_BAT Bool, [4] (6) Battery voltage measurement enable flag MEAS_TEMP Bool, [4] (7) IC temperature measurement enable flag MEAS_VCC Bool, [5] (0) IC supply voltage measurement enable flag.
  • Page 41 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION Table 6. CAN Message Send and Received by DC2732A_CAN for RAW LTC2949 Register Access NAME SIGNAL T,[BYTE],BITS DESCRIPTION 0x117 RAWRW WRITE Bool, [0] (7) Write flag. Set for write commands, clear for read commands. In the responding message send by DC2732A_CAN this flag will be inverted (e.g., after a write send to DC2732A_CAN the WRITE flag will be cleared in the response message) COUNTDOWN...

  • Page 42: Basic Operation Examples

    DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION BASIC OPERATION EXAMPLES Current, Power, BAT (100ms) Examples shows measurement of Current (I1), Power (P1) and battery voltage (BAT) at LTC2949’s update rate of 100ms. ***BUSMASTER Ver 3.2.2*** ***PROTOCOL CAN*** ***NOTE: PLEASE DO NOT EDIT THIS DOCUMENT*** ***[START LOGGING SESSION]*** ***HEX*** ***RELATIVE MODE***...

  • Page 43: I1, P1, Bat (100Ms), I2Fast, Batfast (Average 10Ms)

    DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION • Fast measurement results (I2, BAT, others: don’t care!) 00:00:00:1989 Rx 1 0x11C s 8 00 C0 01 00 D7 FF 04 C0 00:00:00:0013 Rx 1 0x11C s 8 00 C0 02 00 D7 FF 04 C0 00:00:00:0014 Rx 1 0x11C s 8 00 C0 01 00 D7 FF 04 C0 00:00:00:0018 Rx 1 0x11C s 8 00 C0 01 00 D7 FF 04 C0 00:00:00:0013 Rx 1 0x11C s 8 00 C0 01 00 D8 FF 04 C0...
  • Page 44 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION • Start of measurement: MEAS_BAT, MEAS_I1, MEAS_P1, CH2FAST, FCONT, P2ASV, MEAS_ENABLE, MEAS_PERIOD = 0, FAST_MEAS_PERIOD = 0 00:03:58:2797 Tx 1 0x11F s 8 8A 01 00 00 45 80 00 00 • Slow measurement results (I1, P1, BAT) 00:00:00:2915 Rx 1 0x110 s 8 00 00 02 00 00 01 FF D7 00:00:00:0967 Rx 1 0x110 s 8 FF FF FF 00 00 00 FF DF …...

  • Page 45: Additional Operation Examples

    DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION • Last fast measurement results before stop of measurement 00:00:00:0030 Rx 1 0x121 s 6 00 00 00 80 0D 00 00:00:00:0025 Rx 1 0x122 s 6 00 00 00 80 0E 00 ***END DATE AND TIME 17:4:2018 11:56:19:410*** ***[STOP LOGGING SESSION]*** ADDITIONAL OPERATION EXAMPLES...
  • Page 46 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION • Send RAWRW with COUNTDOWN = 0, WRITE = 0, ADDR = 0, D0 = 16, CAN-Message-Data-Length = 3 to read C1, E1, TB1 again and check all data is now zero. 00:00:09:9925 Tx 1 0x117 s 3 00 00 10 00:00:00:0279 Rx 1 0x117 s 6 04 00 00 00 00 00 00:00:00:0004 Rx 1 0x117 s 8 02 00 00 00 00 00 00 00...
  • Page 47 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION 00:00:00:9988 Rx 1 0x110 s 3 00 00 03 00:00:00:9980 Rx 1 0x110 s 3 00 00 03 00:00:00:9989 Rx 1 0x110 s 3 00 00 03 00:00:00:9989 Rx 1 0x110 s 3 00 00 03 00:00:00:6957 Tx 1 0x11D s 0 00:00:00:0033 Rx 1 0x11C s 8 00 80 00 00 65 FF 3C 02 00:00:00:2989 Rx 1 0x110 s 3 00 00 03...

  • Page 48: Fast Measurement

    DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION FAST MEASUREMENT • Enable Measurement: 00:01:07:2305 Tx 1 0x11F s 8 9E 01 05 05 F5 87 0A 00 • Slow channel measurement results 0 00:00:01:0022 Rx 1 0x110 s 8 FF FF FE 00 00 01 FF EB 00:00:00:0005 Rx 1 0x111 s 8 80 00 00 80 00 00 00 7B 00:00:00:0010 Rx 1 0x112 s 8 80 00 0A 75 1F 06 09 76 00:00:00:0003 Rx 1 0x113 s 2 00 71...
  • Page 49 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION 00:00:00:0004 Rx 1 0x119 s 8 01 00 00 00 01 00 00 00 00:00:00:0004 Rx 1 0x119 s 8 01 00 00 00 00 00 00 00 00:00:00:0004 Rx 1 0x119 s 8 00 00 00 00 00 00 FF FF 00:00:00:0004 Rx 1 0x119 s 8 FF FF 00 00 00 00 FF FF •...
  • Page 50 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION 00:00:00:0004 Rx 1 0x11B s 8 78 0A 78 0A 78 0A 78 0A 00:00:00:0004 Rx 1 0x11B s 8 78 0A 78 0A 78 0A 78 0A 00:00:00:0004 Rx 1 0x11B s 8 78 0A 78 0A 78 0A 78 0A 00:00:00:0004 Rx 1 0x11B s 8 78 0A 78 0A 78 0A 78 0A 00:00:00:0004 Rx 1 0x11B s 8 78 0A 78 0A 78 0A 78 0A 00:00:00:0004 Rx 1 0x11B s 8 78 0A 78 0A 78 0A 78 0A...

  • Page 51: Serial Monitor Via Linduino's Usb Port

    DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION • Fast channel last sample report (every 1ms to 2ms): 00:00:00:0024 Rx 1 0x11C s 8 00 00 02 00 F0 FF 7A 0A 00:00:00:0016 Rx 1 0x11C s 8 00 00 02 00 F0 FF 7A 0A 00:00:00:0018 Rx 1 0x11C s 8 00 00 02 00 F0 FF 7A 0A 00:00:00:0014 Rx 1 0x11C s 8 00 00 02 00 F0 FF 7A 0A 00:00:00:0010 Rx 1 0x11C s 8 00 00 03 00 EF FF 7A 0A...
  • Page 52 DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION APPENDIX B: CAN BASED EVALUATION Table 7. Serial Monitor Command Overview DESCRIPTION Reset the LTC2949 INT<CS, BR> Assign chip select pin to the CAN controller (must be 9 for the DC2617A) and set the CAN baud rate. For example: >...

  • Page 53: Convert .Dbf To .Dbc File

    DEMO MANUAL DC2732A APPENDIX B: CAN BASED EVALUATION APPENDIX B: CAN BASED EVALUATION CONVERT .DBF TO .DBC FILE Figure 54. Busmaster → Tools → Format Converter → Other Converters Rev. 0...

  • Page 54: Resistive Divider Equation

    DEMO MANUAL DC2732A APPENDIX C: ISOLATION MEASUREMENT WITH LTC2949 The equations to calculate the isolation fault resistors Riso+ and Riso- depending on two chassis-GND meas-urements VxI and VxII and two battery stack voltage measurements VBATI and VBATII for the two cases ‘switch open’ (I) and ‘switch closed’...

  • Page 55: Case I: Switch M1 Open

    DEMO MANUAL DC2732A APPENDIX C: ISOLATION MEASUREMENT WITH LTC2949 CASE I: SWITCH M1 OPEN CASE II: SWITCH M1 CLOSED COMBINE EQUATIONS OF BOTH CASES Rev. 0...

  • Page 56: Iso - From Case Ii

    DEMO MANUAL DC2732A APPENDIX D: MEASURE HALL SENSOR WITH DC2732A_BASIC CALCULATE Y – FROM CASE II: SIMULATION WITH SWITCH LEAKAGE ERROR Switch open Switch closed BAT1 {Rp*(1-p)} iso+ iso1+ {Risp} {Risp} {Rp*p} VxII Chassis Chassis {BAT} {BAT} {Rn*(1-n)} {Rn*(1-n)} V1II iso–...
  • Page 57 DEMO MANUAL DC2732A APPENDIX D: MEASURE HALL SENSOR WITH DC2732A_BASIC For easy evaluation without changing the Linduino sketch, the external sensor (e.g., hall sensor) could be connected to the BAT (BATP-BATM) input of the demoboard. tDut,I1,P1,BAT,Tntc,TIC,fI2,fBAT,fifoCnt,fifoI2Avg,fifoBATAvg,OK/ERR Measurements of BAT are reported twice by DC2732A_BASIC. BAT is from the slow channel, f is from the fast channel (average of 128 samples).

  • Page 58: Appendix E: Synchronous Measurements With Cell Monitors And Ltc2949

    DEMO MANUAL DC2732A APPENDIX E: SYNCHRONOUS MEASUREMENTS WITH CELL MONITORS AND LTC2949 The LTC2949 GUI also supports synchronous measurements of cell voltages via cell monitors LTC68xx together with current, voltage measurements by LTC2949: 1. Click Connect. 2. Select number of cell monitors, cells per cell monitor, topology of the isoSPI bus (LTC2949 on top of the daisy chain or parallel to the bottom of the daisy chain) and the CS (chip select) line.
  • Page 59 DEMO MANUAL DC2732A APPENDIX E: SYNCHRONOUS MEASUREMENTS WITH CELL MONITORS AND LTC2949 3. Click Connect. b. Note: Keep in mind to disable the termination resistor on DC2732A (JP1) in case LTC2949 is connected in parallel to an isoSPI bus. 4. Adjust GUI Layout optimized for Cell Monitor integration (click on GUI Cell Monitor Layout within Expert Commands window).
  • Page 60 DEMO MANUAL DC2732A APPENDIX E: SYNCHRONOUS MEASUREMENTS WITH CELL MONITORS AND LTC2949 c. Update Configuration. e. Enable Continuous Mode. g. Enable Fast Measurements CH2, Aux. 6. Select Channel for Fast AUX Conversion (e.g., V vs GND). REF2 Rev. 0...
  • Page 61 DEMO MANUAL DC2732A APPENDIX E: SYNCHRONOUS MEASUREMENTS WITH CELL MONITORS AND LTC2949 7. Enable “Register Auto Read” to Get Measurement Results. 8. Click on “Clear A… T… Plots” to Clear the Plots and Start Over at Time = 0. 9. Right Click in Any Plot Window and Select “Zoom All Plots” → “Zoom Fit All” to See the Plotted Results. 10.
  • Page 62 DEMO MANUAL DC2732A APPENDIX E: SYNCHRONOUS MEASUREMENTS WITH CELL MONITORS AND LTC2949 11. Watch the Measurements. Rev. 0...
  • Page 63 DEMO MANUAL DC2732A APPENDIX E: SYNCHRONOUS MEASUREMENTS WITH CELL MONITORS AND LTC2949 12. Export the Measurements if Required. 13. Change the Measurement Update Rate if Required. Rev. 0...

  • Page 64: Appendix F: Gui Troubleshooting & Linduino Programming

    DEMO MANUAL DC2732A APPENDIX F: GUI TROUBLESHOOTING & LINDUINO PROGRAMMING The latest LTC2949 GUI version is distributed with Analog Devices QuikEval software. For QuikEval to be able to detect the DC2732A, the demoboard must be configure to SPI mode (JP3–JP6) and connect to the Linduino via the 14-pin flat ribbon cable.
  • Page 65 DEMO MANUAL DC2732A APPENDIX F: GUI TROUBLESHOOTING & LINDUINO PROGRAMMING To do a basic hardware test, the DC2732A_BASIC sketch can be loaded. Click on the “right arrow” to compile and upload. Rev. 0...
  • Page 66 DEMO MANUAL DC2732A APPENDIX F: GUI TROUBLESHOOTING & LINDUINO PROGRAMMING Click on the Serial Monitor Icon, make sure Serial Monitor is set to 1000000 baud. Note: In case Arduino DUE is used, the max. supported baud rate is 250000. See output: If the output is like above screenshot, without any message “…ERR…”...
  • Page 67 DEMO MANUAL DC2732A APPENDIX F: GUI TROUBLESHOOTING & LINDUINO PROGRAMMING 2. Click the Upload button. 3. Watch the Sketch being compiled…. a. …and wait till the upload is done. 6. Now the Arduino IDE can be closed and the LTC2949 GUI can be opened. Rev.

  • Page 68: Appendix G: Log Measurements With Tera Term

    DEMO MANUAL DC2732A APPENDIX G: LOG MEASUREMENTS WITH TERA TERM Most of the DC2732A example Sketches, for example, the DC2732A_BASIC Sketch, send the measurement data via the serial monitor to the PC. Any serial terminal software can be used to record this data. For example, the open source tool Tera Term and its log feature can be used as described here.
  • Page 69 DEMO MANUAL DC2732A APPENDIX G: LOG MEASUREMENTS WITH TERA TERM 5. Now you see the output printed to the window. 6. Now enable the file logger. Rev. 0...
  • Page 70 DEMO MANUAL DC2732A APPENDIX G: LOG MEASUREMENTS WITH TERA TERM 7. Choose a file name (it is recommended to use the ending .csv, for easy opening the file with excel…) 8. Click save. All data is now stored to a file. To show the status of the log go to File → “Show Log dialog…” The file could now be opened in a text editor or in excel.

  • Page 71: Appendix H: Ltc2949.Cpp/.H Basic Library Functions

    DEMO MANUAL DC2732A APPENDIX H: LTC2949.CPP/.H BASIC LIBRARY FUNCTIONS The following gives an overview and description of the low level communication functions available in the LTC2949 C-Code library LTC2949.cpp/.h (within Sketchbook folder: LTSketchbook\libraries\LTC2949). 1. Configure library for communication topology (top of daisy chain or parallel to daisy chain/single device). LTC2949_init_lib( /*byte cellMonitorCount, */LTCDEF_CELL_MONITOR_COUNT,...
  • Page 72 DEMO MANUAL DC2732A APPENDIX H: LTC2949.CPP/.H BASIC LIBRARY FUNCTIONS 7. Check EEPROM control and status register, make sure to be in the initial state byte error = LTC2949_EEPROMIsReady() 8. Initialize EEPROM byte error = LTC2949_EEPROMCommand(LTC2949_BM_EEPROM_INIT) 9. Check if EEPROM was initialized correctly byte error = LTC2949_EEPROMCommand(LTC2949_BM_EEPROM_CHECK) 10.
  • Page 73 DEMO MANUAL DC2732A ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern.

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