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Technical content
Rev. D
DESCRIPTION
Multichemistry Buck Battery Charger with Digital Telemetry System Demonstration Circuit 2039A features the LT C®4015EUHF, a Multichemistry Buck Battery Charger with Digital Te- lemetry System, operating as a 2-cell Li-Ion, 8A battery charger. The DC2039A allows configuring the LTC4015 to support up to 9 cells for Li-Ion and LiFePO4, and 3, 6, or 12 cells for Lead-Acid batteries. Programmable and fully automatic charge algorithms can be chosen for each of the chemistries. PERFORMANCE SUMMARY DEMO BOARD PROCEDURE: TYPICAL APPLICATION Configuration of the DC2039A demo board is achieved by changing 0Ω jumpers to indicate chemistry and cell count. The VIN voltage must then be appropriate for the cell count and chemistry selected. Design files for this circuit board are available. Specifications are at TA = 25°C 12VIN 2-Cell Li-Ion 8A Step-Down Battery Charger Controller Step-Down Charger Efficiency and Coulomb Counter Error vs Battery Charge Current CHARGE CURRENT (A) EFFICIENCY (%) COULOMB COUNTER ERROR (%) DC2039A TA01b 100 0.5 0.0 –0.5 –1.0 –1.5 –2.0 0.1 101 EFFICIENCY QC ERROR SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN DC2039A Input Voltage Range 5 35 V V(BAT) DC2039A BAT Turret Pin Voltage (Battery Stack Voltage) Chemistry = Li, Cell Count = 1 ~ 9 Cells 5 35 V Chemistry = Lead-Acid, Cell Count = 12 Cells 5 31.2 V I(BAT) DC2039A Charge Current RSNSB = 4mΩ 7.9 8 8.1 A V(SYS) System Voltage I(SYS) ≤ 8A VIN – 0.2V VIN V I(SYS) Load Current on System Voltage I(BAT) = 0A 10.7 A L TC4015 VIN UVCLFB µCONTROLLER VIN 12V SMBALERT DVCC SCL SDA CELLS0 INTV CC CELLS1 CELLS2 CHEM0 CHEM1 RT V C CCREFP CCREFM EQ INFET CLP RSNS2 CLN SYS SYSM5 DC2039A TA01a OUTFET SYS INTVCC DRVCC BST TGATE SW BGATE 2P5VCC CSPM5 CSP CSN RNTCBIAS RSNSB BATSENS NTCBIAS NTCLEAD-ACID EQUALIZE CHARGE (PADDLE) GNDSGND MPPT MPPT ENABLE RNTC 2-CELL Li-Ion BATTERY PACK T All registered trademarks and trademarks are the property of their respective owners.
below to familiarize yourself with the DC2039A.
- Update to the latest version of QuikEval™ and start
ate USB cable, as shown in Figure 1. LTC4015 should attempt to charge the battery at 8A.
- Set LD2 = 4A, enable the input, and observe input
- Disable the output on PS1, and input on LD1, and
Figure 1. Test Setup for the DC2039 Demo Board
Figure 2. Measuring Input or Output Ripple Kelvin connections directly to the board pins. powered up by either VIN or V(BAT). Figure 3. Chemistry and Cell Count Configuration 0Ω Jumpers INT_VCC to ground and the LTC4015 may be damaged. and/or cell count, modify the jumpers in Figure 3 to suit. should be made with no voltage applied to VIN or V(BAT). cell count, and are reproduced below for convenience.
1 L L H
2 L H L
4 L L Z
5 L Z L
7 L Z H
8 L Z Z
9 H L L
Rev. D Introduction to the DC2039A The DC2039 A demonstration circuit features the LTC4015EUHF Multichemistry Buck Battery Charger with Digital Telemetry System. The LTC4015EUHF is a Buck topology switching battery charger controller that includes a comprehensive telemetry system. In addition, the LTC4015 has two ideal diode controllers, and an MPPT function. The LTC4015 also features a Coulomb counter with a 16-bit prescaler. The LTC4015EUHF is packaged in a 5mm × 7mm, 38-lead exposed pad QFN that is rated at 34°C/W. The LTC4015EUHF implements the switching charger with external switch MOSFETs. The DC2039A demo board implements the switch as a dual N-channel MOSFET in a single package. The telemetry system features a 14-bit ADC for monitoring all the operating parameters of the charger. The behavior of the charger is controlled by on-die DACs, with only the power MOSFETs and current sense resistors external to the LTC4015. The LTC4015EUHF has two Ideal Diode controllers with external power MOSFETs. One Ideal diode is between the input voltage, V IN, and the system output node, SYS. The other Ideal Diode is between battery stack at BAT, and the system output node, SYS. This allows the routing of power from either the input or the battery stack to the system output, without backfeeding either. The dynamic MPPT algorithm ensures that the LTC4015 is operating at the maximum power point condition, even when the MPPT operating point is changing. Thus, DC2039A THEORY OF OPERATION if a photovoltaic cell becomes shaded due to clouds, the LTC4015 will adjust operation to the shaded MPPT. See the DC2039A schematic and the LTC4015EUHF data sheet for details of the functional descriptions below. Current Mode Buck Regulator The battery charger is implemented as a switching regula- tor with a Current Mode Buck topology. Thus, the battery charge voltage can be less than or nearly equal to the input voltage, VIN. The buck regulator switch is composed of N-channel MOSFETs in a single package, M3A & M3B. Because two N-channel MOSFETs are used, the gate drive of the top switch MOSFET, M3B, has to be bootstrapped from INT_VCC via DB and CB. This bootstrapping provides up to INT_VCC (≈ 4.3V) of gate drive to M3B. The DRVCC pin, also provides the bottom switch MOSFET, M3A, with up to INT_VCC of gate drive. When the top switch is on, the SW pin rises to very nearly V(SYS), and the BOOST and TG pins rise to V(SYS) + INT_VCC, please see Figures 4 and 5. The buck regulator switching frequency is set by Rt, and on the DC2039A Rt = 95.3kΩ, so the switching frequency is set to 500kHz. The buck inductor, L1, is a 10mm × 10mm × 10mm 10µH inductor with DCR = 13.4mΩ, and ISAT = 17.5A. The topology of the DC2039A now diverges from that of a buck regulator to implement a battery charger. After L1, the switching inductor, the current goes through RSNSB to the battery and ≈ 20µF of MLCC capacitance. The in- stantaneous current measured by RSNSB is used by the Current Mode Buck regulator.
Rev. D DC2039A THEORY OF OPERATION The Current Mode Buck regulator also has input Undervolt- age Current Limit (UVCL). The LTC4015 tries to keep the UVCLFB pin above 1.2V. When the voltage at the UVCLFB pin falls to 1.2V, the Current Mode Buck regulator begins to dial back the charge current, I(SYS) current is unaffected. If the UVCLFB pins falls to 1.15V, charge current is dialed back to 0A, I(SYS) current continues to be unaffected, and may be large enough to keep the LTC4015 in UVCL. On the DC2039A, the UVCLFB pin divider, when not in MPPT, is 10/75 = 0.133, so the DC2039A maximum VIN UVCL voltage is 1.2V/0.133V = 9V. This voltage may be reduced, only, by changing the value of the VIN_UVCL_SET- TING (0x16) register. Battery Charger The battery charger is a full function charger. In CC mode, the average current through RSNSB is used to control the output voltage of the buck regulator such that the battery is charged with a constant current. In CV mode, the Current Mode Buck regulator behaves like a voltage regulator maintaining the desired voltage at the BAT turret, with an internal feedback divider. The battery charger supports multiple chemistries, specifi- cally Li-Ion, LiFePO4, and Lead-Acid (PbH+). The battery charger can support whatever battery stack voltage it can make as a buck regulator with a maximum 35V input. The battery charge voltage for Li-Ion has a maximum of 4.2V, so the LT4015 charger can support a stack of up to 8 bat- teries. However, 9 batteries is a valid cell count for the Li-Ion, as some applications may only charge Li-Ion cells to 3.8V. The maximum battery charge voltage for LiFePO4 is 3.8V, including absorb, so the LTC4015 can support a stack of up to 9 batteries. Finally, PbH+ cells have a maximum voltage of 2.6V, including absorb and equalize, but almost all applications use multiples of 3 cells. So the LTC4015 can charge 3, 6, or 12 PbH+ cells. Besides the standard CC-CV charging profile , the charger has many other features. The LTC4015 supports programmable charge voltage and charge current, C/x and/or timer termi- nation, trickle charge (Li-Ion chemistries only), maximum total charge time, JEITA temperature based charge control (Li-Ion and LiFePO4 chemistries only), charge absorption (LiFePO4 and PbH+ chemistries only) and cell equalization (PbH+ chemistries only). The chemistry and cell count are set using pins, and must not change after power on. The range of charge current is determined by the switch MOSFETs, M3A and B, and the charge current sense resistor RSNSB. On the DC2039A, RSNSB = 4mΩ, and the maximum charge current sense voltage is 32mV, so the maximum charge current is 8A. The battery charger can also monitor the battery tempera- ture using the NTC resistor. The temperature measured supports the JEITA charge current vs battery temperature without processor intervention. The charger can assert an SMBAlert for battery too hot and too cold. When the NTC jumper (JP2) is on "INT", the DC2039A emulates the NTC resistor with an electronic potentiometer. This allows the demo board user to set the NTC temperature directly and see the resultant operation. Battery IQ Measurement The LT4015 has very low BAT pin IQ current, 112μA (Typ). This current is measured with voltage applied to the BAT pin only, with the telemetry system off. The GUI and other user interface functions, on the demo board, require that USB power be applied. If USB power is not applied, sneak (leakage) paths in the embedded microcontroller will increase BAT pin IQ current to over 1mA. Input Current Limit The DC2039A contains an input current sense resistor, RSNSI, that allows the input current to be sensed by the LTC4015. RSNSI = 3mΩ and the maximum input current limit sense voltage is 32mV, so the maximum input current limit on the DC2039A is 10.7A. The input current sensed by the LTC4015 is the sum of the I(SYS) current and bat- tery charge current via M3B. The LTC4015 will reduce the battery charge current to keep the input current below the limit. However, once the battery charge current reaches 0A, the LTC4015 cannot further reduce the input current, as it cannot reduce the load current on the SYS node.
Rev. D DC2039A THEORY OF OPERATION Ideal Diodes There are two Ideal Diode controllers, one performs the PowerPath™ function from the BAT to SYS (battery PowerPath function). The other performs the PowerPath function from VIN to SYS (VIN PowerPath function). The battery PowerPath Ideal Diode is M4, a P-channel MOSFET, and the VIN PowerPath Ideal Diode is M5, an N-channel MOSFET. In each case, the body diode already has the correct polarity, but when forward drop exceeds 15 mV, the MOSFET is enhanced, to try and keep the forward drop to 15mV. The forward drop will still exceed 15mV if (ID × RDS(on)) > 15mV. Maximum Power Point T racking (MPPT) The LTC4015 contains a dynamic power point tracking function that continuously checks for a local maximum, and periodically checks for a global maximum. Thus, as shade obscures a solar cell, the LTC4015 would also track the MPPT down maintaining the optimum operating point at all times. The LTC4015 can only alter battery charge current to try and stay at the MPPT, but once battery charge current reaches zero, the LTC4015 will not be able to track the MPPT further, as it cannot alter the SYS node load current. MPPT reuses the UVCLFB pin, and the UVCL threshold must be set to 35V, or higher, to use MPPT. The DC2039A automatically moves the UVCL threshold to 36V using U2, M1, and M2, whenever MPPT is selected with JP1. Coulomb Counter The RSNSB current sense resistor provides both peak current information for the Current Mode Buck regulator, and average current information for the battery charger. It also provides 2 quadrant current information to the built in coulomb counter. This counter can be used to track the charge stored in the battery, by integrating the cur- rent information from RSNSB. The count increases when battery current is positive—going into and charging the battery. And the count decreases with the battery current is negative—going out of and discharging the battery. Current can be drawn from the battery via the battery PowerPath function. The coulomb counter has a 16-bit prescaler, and so can be used to track the SoC of very large batteries, up to 15,000Ahr batteries are supported. Telemetry System The LTC4015 has a comprehensive telemetry system on board. This telemetry system can read most system parameters, through appropriate dividers or amplifiers, using a 14-bit Analog-to-Digital converter (ADC). Please refer to the LTC4015 data sheet for details. I2C The LTC4015 has an I2C port, with SMBus word readback, SMBAlert, and over 70 registers for configuration and status information. All the registers are words (16-bit), some are signed, all registers can be read by (s = start, Rs = restart, p = stop): s-device write address-subaddress-Rs-device read address-byte 1/ACK-byte2/NACK-p Or written by: s-device write address-subaddress-byte-byte1/ACK- byte2/NACK-p An SMBAlert is cleared by reading a byte from the ARA device address (0x19), the returned byte is the address of the a device that posted the SMBAlert: s-ARA read address-byte/NACK-p Please refer to the LTC4015 data sheet for more details about communicating with the LTC4015.
(J1), in the lower left hand corner of the demo board. the LTC4015 Main Page environment. and all resistor values will be reset to the factory defaults. and have the GUI load the custom configuration at startup. could be set to load "ADI is #1" at startup. the mouse hovers over the element for a few seconds. and short cut keys, if applicable. Figure 6. Interpreting Register Information in the GUI
Figure 7. LTC4015 Main Page Environment currently attached to the PC hosting the LTC4015 GUI. board is detached from the host PC. corresponding DC2039A demo board. LTC4015 GUIs are also closed.
Figure 8. LTC4015 GUI Running Within the LTC4015 Main Page Environment more than one GUI and demo board are present. also be used to bring the desired LTC4015 GUI to the front.
Figure 9. The LTC4015 GUI is Composed of Tw o Distinct Regions the Tab area change depending on which Tab is chosen. mouse on the tabs at the left of the Tab area.
Figure 10. All Elements in the GUI Popup Tooltips pointer over the GUI element of interest for 2 or 3 seconds. the mouse pointer continues to hover over the element.
Figure 18. LTC4015 GUI Dashboard Detail
Rev. D The dashboard is always visible, and shows all the instan- taneous state variables needed to monitor a charge cycle. The dashboard updates approximately twice a second. The only value directly modifiable by the user is the current NTC temperature (when the NTC jumper (JP2) is on "INT"). However, the Coulomb counter is modifiable indirectly by both the Coulomb counter ON/OFF switch and the Coulomb counter tab. The Battery Stack Resistance update rate is also modifiable in the GUI Configuration tab. The function of the voltmeters and ammeters is to show the corresponding instantaneous voltages and currents. The Chemistry and Cell Count box contains two tiles that show the currently selected chemistry and cell count. These items are selected by the CHEM[1..0] and CELL[2..0] jumpers, on the DC2039A demo board, and must not be changed after Power On Reset (POR). Changing these values after POR will produce unexpected results, and is strongly discouraged. The "xxx Programmable" chemistries allow configuration of various charge parameters in the Charger Settings tab and for Li chemistries the JEITA Curve tabs. Most of the Charger Settings and JEITA Curve tab are disabled for Non-Programmable chemistries. Cell count is range checked at power up. If the selected chemistry and cell count are not compatible, the GUI will open in a zombie state. None of the GUI will be functional, but the chemistry and cell count will reflect the selection made by the CHEM[1..0] and CELL[2..0], for troubleshooting purposes. The estimated system current, I(SYS) is calculated by: I(SYS) =I(V IN )– V(BAT) • I(BAT) η • V(SYS) If VIN ≤ V(BAT),Then : I(SYS) = I(VIN ) – I(BAT) The input current measurement of the LTC4015 cannot differentiate between current going to the battery via the charger and current going to the load on SYS. Using the efficiency selected in the pull-down on the GUI Configura- tion tab, I(SYS) can be estimated with reasonable accuracy. The SMBAlert tile and Clear SMBAlert button allow man- aging of the SMBAlert function of the LTC4015. When one or more SMBAlerts are asserted, the SMBAlert tile will change to: The pulldown box will list all pending SMBAlert causes, pressing Clear SMBAlert clears all the pending alerts using an ARA and checking that the responding device is the LTC4015. It is possible that an SMBAlert will post due to one reason, but one or more other reasons may assert before the Clear SMBAlert button is pushed. The pulldown box is continuously updated with new SMBAlert reasons until the Clear SMBAlert button is pushed. It is also pos- sible that an SMBAlert reason will assert and de-assert before the Clear SMBAlert button is pushed. All reasons for the SMBAlert are kept in the pulldown box, until the Clear SMBAlert button is pushed, even if they’ve since de-asserted. The Battery Stack Resistance value is calculated by recording the charge current and battery voltage , momentarily shut- ting off the charger, and re-measuring the battery voltage. BSR is then the change in battery voltage divided by charge current. As such it can only be measured while charging the battery. The default value at power up, is the maximum measurable BSR for the currently selected cell count. The BSR may be updated on a fixed interval or on demand, using the pulldown box or button on the GUI Configuration tab: All BSR measurement requests are ignored if the charger is not in a state that allows measurement, such as, for example, NTC pause. Also, if the battery charge current is small, for example at the end of a charge cycle in CV mode, the resultant voltage change from momentarily shutting the charger off will also be small. Thus, one small number may be divided by another small number, and the numerical resolution of the BSR measurement may result in reduced accuracy of the result. THE DASHBOARD IN DETAIL
Figure 21. The GUI Configuration Tab in Detail system to update the dashboard, and some other values. measuring battery IQ, but will freeze the dashboard values. be saved to the named location. the name, are deleted. This location is now once again empty. configuration to become the default at startup.
Rev. D THE CHARGER SETTINGS TAB DETAIL The LTC4015 charge characteristics, for Li chemistries only, can be the same over temperature or vary depending on the reported NTC temperature. The latter control is referred to as JEITA curve control, the actual details of which are discussed in the next section. The Enable JEITA charge vs temperature check box determines if the charge is controlled by the Charge Control box on this tab, or the JEITA curve on the next tab. JEITA curve control is only for the Li chemistries, so this check box and the entire JEITA tab will not be present if Lead-Acid chemistries are selected. If the operating conditions are such that charging is possible, the charger will start. The Suspend Charger check box turns the charger on and off. This stops the charger, but since the operating conditions are such that the charger would be operating, the charger is suspended rather than off. The LTC4015 can terminate charging of Li chemistries when the actual charge current drops below a certain percentage of the programmed charge current. This type of termina- tion is called Coverx (or C/x, in brief), and the Enable C/x termination check box enables this functionality. The actual THE GUI CONFIGURATION TAB DETAIL There are a variety of resistors that can be managed from the GUI Configuration tab, and one resistor that is not changeable but is presented to keep the user aware of its presence. The DC2039A demo board cannot verify the values of any of the resistors. It is incumbent on the user to maintain correspondence between the actual resistors mounted on the PCB and the resistances shown in the GUI. The CCREF resistor cannot be changed, Analog Devices has selected its value at 301kΩ ± 0.1%, to ensure optimal measurement accuracy. Care should be used, not only in component placement and routing, but in manufacturing PCB cleaning and handling. Errors in this resistance directly affect errors in the Coulomb counter. The Input current sense resistor, RSNSI, and the Charge current sense, RSNSB, resistor are used to sense and control the input current and battery charge current, respectively. The maximum controllable value is 32mV, but the maximum measurable value is 50mV, albeit with some increase in measurement noisiness. For example, if an 8A maximum charge current is desired, select 4.0mΩ for the RSNSB sense resistor. The values of these resis- tors are stored as part of the custom configuration, as they are the most likely component to be changed on the DC2039A demo board. The R uvcltop and Ruvclbottom resistors are used to determine the Undervoltage Current Limit threshold, if the LTC4015 is not in MPPT mode. When not in MPPT mode VIN is divided down by Ruvcltop and Ruvclbottom (R4 and R6, respectively, on the DC2039A schematic) and applied to the UVCLFB pin. The voltage at UVCLFB is compared to a 1.2V reference developed by an 8-bit DAC. The value of this DAC is set by the VIN_UVCL_SETTING register (0x16), which is controlled by the UVCL knob on the System tab. These resistors are saved in the custom configuration, but the default values are Ruvcltop = 64.9kΩ and Ruvclbottom = 10kΩ, resulting in a maximum UVCL threshold of VIN = 9V. If the LTC4015 is in MPPT mode, the UVCL threshold is forced to ≈ 36V, and the UVCL knob, on the System tab is disabled. percent of programmed charge current that constitutes the end of charge is set in the Charge Termination box. Cov- erx termination is not applicable to the Lead-Acid (PbH+) chemistries. But for Lead-Acid Chemistries, C/x is used to change from absorb phase to CC-CV phase. The PbH+ chemistries charge voltage can be temperature compensated at –3.65mV/cell/°C, and is controlled by the NTC reported temperature. The Enable Lead-Acid temperature compensation check box determines if the temperature compensation is applied or not. This check box only applies for the PbH+ chemistries, and will not be available for the Li chemistries. There is a procedure to cause Lead-Acid cell capacities to align capacity with one another called Cell Equalization. This procedure involves applying up to 2.6V/cell for a specified amount of time. This procedure can have the positive effect of leveling out the capacities of the cells within a battery. It can also damage the battery irreparably, and so, should be used sparingly and judiciously. The Arm equalize and Equalize Lead-Acid are designed to allow equalization, but prevent it from happening by accident or mispick.
Figure 22. The Charger Settings Tab in Detail age is applied is set in the Lead-Acid Equalization box. charge vs temperature is not checked. to be set as a percentage of programmed charge current. is PbH+, this box is greyed out and disabled. MAX_CHARGE_TIME is unavailable for PbH+ chemistries. able for the Li-Ion chemistries.
Figure 23. The JEITA Curve Tab in Detail is not. The JEITA curve is divided into temperature regions. selected charge voltage and current versus temperature. by simply changing the NTC set temperature.
point of interest for a couple of seconds. the battery stack voltage and charge current. STACK VOL TAGE AND CHARGE CURRENT ARE SAVED. Figure 24. The Charge Status Tab in Detail
the LTC4015 cannot distinguish between these two loads. Figure 25. The System Tab in Detail be controlled by the LTC4015. same rate as the dashboard, approximately twice a second.
Figure 26. The Coulomb Counter Tab in Detail whether or not dynamic recalibration should be enabled. is a count of 16384 (1/4 of full scale count). will keep track of the charge in the battery. then an SMBAlert will be posted. counting again, and the value is displayed in the dashboard.
pending alerts and clearing of alerts. VIN is less than the threshold. enables for the coulomb counter count high and low alerts. whenever the charger is suspended. Figure 27. The Limits and Alerts Tab in Detail will not generate a new e-mail.
Rev. D PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 14 C2, C3, C4, C5, C9, C10, C18, C19, C20, C21, C22, C23, C24, C25 CAP, CHIP, X5R, 10µF, ±10%, 50V, 1206 MURATA, GRM31CR61H106KA12L 2 1 C6 CAP, CHIP, C0G, 100pF, ±5%, 50V, 0402 AVX, 04025A101JAT2A 3 3 C7, C13, C17 CAP, CHIP, X7R, 0.1µF, ±10%, 50V, 0402 TDK, C1005X7R1H104K 4 1 C8 CAP, CHIP, X5R, 2.2µF, ±10%, 6.3V, 0402 TDK, C1005X5R0J225K 5 2 C11, C16 CAP, CHIP, X5R, 1000pF, ±10%, 50V, 0402 TDK, C1005X5R1H102K 6 2 C12, C15 CAP, CHIP, X5R, 0.33µF, ±10%, 10V, 0402 MURATA, GRM155R61A334KE15D 7 1 C14 CAP, CHIP, X5R, 10µF, ±10%, 6.3V, 0603 MURATA, GRM188R60J106ME47D 8 1 C26 CAP, ELECTROL YTIC, 120µF, ±20%, 40V, 50V SURGE, 10mm × 12.5mm SUNCON, 40HVH120M 9 1 CB CAP, CHIP, X5R, 0.47µF, ±10%, 16V, 0402 TDK, C1005X5R1C474K 10 1 CC CAP, CHIP, X7R, 0.22µF, ±10%, 10V, 0402 MURATA, GRM155R61A224KE19D 11 1 CC2 CAP, CHIP, X7R, 0.01µF, ±10%, 50V, 0402 TDK, C1005X7R1H103K 12 1 DB SILICON SWITCHING DIODE, 1mm × 0.6mm DFN2 DIODES INC., 1N4448HLP 13 1 L1 IND, SMT, 10µH, 10A, 10mm × 10mm COILCRAFT, XAL1010-103ME 14 1 M3 DUAL 40V, 12A, N-CHANNEL MOSFET, 3mm × 3mm MLP FAIRCHILD, FDMC8030 15 1 M4 –40V, –18A, 25mΩ, P-CHANNEL MOSFET, POWERPAK1212-8 VISHAY, SI7611DN 16 1 M5 40V, 14A, 9.7mΩ, N-CHANNEL MOSFET, 3mm × 3mm MLP FAIRCHILD, FDMC8327L 17 1 R3 RES, CHIP, 226kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402226KFKED 18 1 R4 RES, CHIP, 64.9kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040264K9FKED 19 2 R6, RNTCBIAS RES, CHIP, 10kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040210K0FKED 20 1 R7 RES, CHIP, 10kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW040210K0JNED 21 1 RC RES, CHIP, 200Ω, ±1%, 1/16W, 0402 VISHAY, CRCW0402200RFKED 22 1 RCCREF RES, CHIP, 301kΩ, ±0.1%, 25ppm, 1/10W, 0603 SUSUMU, RG1608P-3013-B-T5 23 1 RSNSI RES, CHIP, 4 TERMINAL, 0.003Ω, ±1%, 1W, KRL3216T4 SUSUMU, KRL3216T4-M-R003-F 24 1 RSNSB RES, CHIP, 4 TERMINAL, 0.004Ω, ±1%, 1W, KRL3216T4 SUSUMU, KRL3216T4-M-R004-F 25 1 RT RES, CHIP, 95.3kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040295K3FKED 26 1 U1 IC, SMT, 35V SYNCHRONOUS STEP-DOWN CONTROLLER BATTERY CHARGER, 5mm × 7mm QFN38 ANALOG DEVICES, LTC4015EUHF Additional Demo Board Circuit Components 1 0 C1-OPT CAP, CHIP, C0G, 2200pF, ±10%, 50V, 0805 AVX, 08055A222KAT9A 2 2 C27, C28 CAP, CHIP, X5R, 10µF, ±10%, 6.3V, 0603 MURATA, GRM188R60J106ME47D 3 0 C29-OPT CAP, CHIP, X5R, 10µF, ±10%, 6.3V, 0603 MURATA, GRM188R60J106ME47D 4 1 C30 CAP, CHIP, X5R, 0.47µF, ±10%, 16V, 0402 TDK, C1005X5R1C474K 5 1 C31 CAP, CHIP, X7R, 0.1µF, ±10%, 50V, 0402 TDK, C1005X7R1H104K 6 1 C32 CAP, CHIP, X5R, 1000pF, ±10%, 50V, 0402 TDK, C1005X5R1H102K 7 0 CPN-OPT CAP, CHIP, X5R, 1µF, ±10%, 16V, 0402 TDK, C1005X5R1C105K 8 1 D1 DIODE, ZENER, 15V, ±6.5%, 0.25W, 1mm × 0.6mm DFN2 DIODES INC., BZT52C15LP
Rev. D PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 9 1 D2 40V, 200mA, SCHOTTKY DIODE, 1mm × 0.6mm DFN2 DIODES INC., BAS40LP 10 1 M1 –50V, 8Ω, P-CHANNEL MOSFET, 1mm × 0.6mm DFN3 DIODES, INC., DMP58D0LFB 11 1 M2 60V, 1.4Ω, N-CHANNEL MOSFET, 1mm × 0.6mm DFN3 DIODES, INC., DMN62D1SFB 12 1 J1 USB2.0 MICRO-B RECEPTACLE, RT, REVERSE MOUNT, 1932788-1 TE, 1932788-1 13 1 J2 2mm, 2 × 3 TH HEADER SAMTEC, TMM-103-02-L-D 14 2 J3, J4 0.1, 1 × 6, TH, HEADER SAMTEC, TSW-106-07-S 15 1 R1 RES, CHIP, 47kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW040247K0JNED 16 2 R2, R23 RES, CHIP, 10kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW040210K0JNED 17 0 R5-OPT, R31-OPT RES, CHIP, 0Ω JUMPER, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 18 0 R9-OPT, R10-OPT, R11-OPT, R13-OPT, R17-OPT RES, CHIP, 0Ω JUMPER, 1/16W, 0603 VISHAY, CRCW06030000Z0ED 19 5 R12, R14, R15, R16, R18 RES, CHIP, 0Ω JUMPER, 1/16W, 0603 VISHAY, CRCW06030000Z0ED 20 1 R19 RES, CHIP, 1MEG, ±5%, 1/16W, 0402 VISHAY, CRCW04021M00JNED 21 2 R20, R21 RES, CHIP, 0Ω JUMPER, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 22 1 R22 RES. CHIP, 1Ω, ±5%, 1/16W, 0402 VISHAY, CRCW04021R00JNED 23 1 R24 RES, CHIP, 10kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040210K0FKED 24 5 R25, R26, R27, R28, R29 RES, CHIP, 4.7kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW04024K70JNED 25 1 R32 RES, CHIP, 0Ω JUMPER, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 26 1 R30 RES, CHIP, 100kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW0402100KJNED 27 2 U2, U6 IC, SMT, SINGLE INVERTER, 1mm MICROPAK6 FAIRCHILD, NC7SZ04L6X 28 1 U3 MODULE, USB ISOLATION WITH POWER TRANSFER, 10mm × 10mm BGA44 ANALOG DEVICES, LTM2884CY 29 1 U4 8-BIT PROCESSOR WITH USB, 4mm × 4mm QFN20 MICROCHIP, PIC16F1459-I/ML 30 1 U5 100kΩ, 8-BIT, ELECTRONIC POTENTIOMETER, MSOP8 ON SEMI, CAT5140ZI-100-GT3 Hardware for Demo Board Only 1 6 E1, E2, E7, E10, E11, E14 TURRET, 0.09" DIA MILL-MAX, 2501-2-00-80-00-00-07-0 2 2 E5, E6 TURRET, 0.061" DIA MILL-MAX, 2308-2-00-80-00-00-07-0 3 6 E3, E4, E8, E9, E12, E13 VERTICAL NANA JACK, 575-4 KEYSTONE, 575-4 4 2 JP1, JP2 3-PIN JUMPER, 2mm SAMTEC, TMM-103-02-L-S 5 2 JP1, JP2 SHUNT, 2mm SAMTEC, 2SN-KB-G 6 4 MH1-MH4 STAND-OFF, NYLON, 0.500" KEYSTONE, 8833
Rev. D SCHEMATIC DIAGRAM A A B B C C D D NTC EXT NOTES: UNLESS OTHERWISE SPECIFIED 1. RESISTORS: OHMS, 0402, 1%, 1/16W 2. CAPACITORS: 0402, 10%, 50V INT 5V - 35V 5V - 35V 35V OFF ON U1.28 OPT OPT OPTOPT OPT PHYSICALLY CLOSE TO OUTPUT SENSE PIN OF RSNSB 1206 1206 0603 10A CBAT OPT OPT 20% U1.28 OPT INT_VCC INT_VCC INT_VCC DVCCSCLSDA nSMBALERT NTC EQ SIZE DATE: . V E R. O N C I SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 5DEMO CIRCUIT 2039A 1 2 35V SYNCHRONOUS STEP-DOWN N/A LTC4015EUHF NC GB 2 - 4 - 16 CONTROLLER BATTERY CHARGER SIZE DATE: . V E R. O N C I SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 5DEMO CIRCUIT 2039A 1 2 35V SYNCHRONOUS STEP-DOWN N/A LTC4015EUHF NC GB 2 - 4 - 16 CONTROLLER BATTERY CHARGER SIZE DATE: . V E R. O N C I SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 5DEMO CIRCUIT 2039A 1 2 35V SYNCHRONOUS STEP-DOWN N/A LTC4015EUHF NC GB 2 - 4 - 16 CONTROLLER BATTERY CHARGER
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV G BPRODUCTION FAB- 5 2 - 4 - 16 DESCRIPTION DATEAPPROVEDECO REV G BPRODUCTION FAB- 5 2 - 4 - 16 DESCRIPTION DATEAPPROVEDECO REV G BPRODUCTION FAB- 5 2 - 4 - 16 GND JP2 C10 10µF LTC4015EUHF SDA5 DVCC3 VIN CSN 19 SMBALERT6 SCL4 PGND MPPT21 SGND NTC 11 UVCLFB8 NTCBIAS 12 EQ13 CSP 20 CCREFP17 CSPM5 15 CCREFM16 BATSENSE 18 CELLS22 RT10 CELLS11 SW 23 VCC2P5 22 VC9 BG 26 DRVCC 27INTVCC 28 OUTFET 29 SYSM5 30 SYS 31 CLN 32 CLP 33 INFET 34 CHEM036 CELLS038 CHEM137 TG 24 BST 25 GND R20 10µF 1206 E13 Rccref 301k 0.1% 0603 64.9k Cc 0.22µF 10V DMP58D0LFB 1 3 E12 Cc2 0.01µF GND C21 10µF 1206 E14 SYS Rt 95.3k C23 10µF 1206 Cb 0.47µF 16V C15 0.33µF 10V C14 10µF 6.3V 20% R18 0603 47k 2200pF 0805 C16 1000pF 2.2µF 6.3V Rntcbias 10.0k JP1 MPPT 0603 R17 0603 C24 10µF 1206 C22 10µF 1206 226k R15 0603 1.0k R16 0603 C18 10µF 1206 C17 0.1µF 10µF 1206 100pF GND R10 0603 R14 0603 0.1µF RSNSI 0.003 KRL3216T4-M-R003-F R12 0603 R11 0603 C12 0.33µF 10V RSNSB 0.004 KRL3216T4-M-R004-F 10µH XAL1010-103ME C25 10µF 1206 E10 BAT VIN NTC + C26 120µF 40V R13 0603 DMN62D1SFB 10k 5% C19 10µF 1206 C11 1000pF 10.0k E11 GND Si7611DN R21 10µF R19 1.0MEG NC7SZ04L6X Cpn 1µF 16V 10µF 1206 M3B FDMC8030 15V BZT52C15LP FDMC8327L 10k C13 0.1µF C20 10µF 1206 10µF 1206 Db 1N4448HLP Rc 200 M3A FDMC8030
Rev. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. SCHEMATIC DIAGRAM A A B B C C D D E E 4 4 3 3 2 2 1 1 NOTES: UNLESS OTHERWISE SPECIFIED 1. RESISTORS: OHMS, 0402, 1%, 1/16W 2. CAPACITORS: 0402, 10%, 50V nSMBALERT 0603 SCL OPT OPT DVcc Close to J1.1 GND Vcc 0603 0603 SDA ICD INTERFACE OPT EQ GND nWP INT_Vcc AUX_SDA AUX_SCL 16V NUMBER OF CELLS CELLS2 CELLS1 CELLS0 12 * Invalid Invalid Invalid LLH L H L L H H LLZ LZL L H Z LZH LZZ H L L HHL H H H H L H L L L CHEMISTRY CHEM1 CHEM0 Li-Ion Programmable H H L Z Z L L H H Z Z H Z Z H L L L Li-Ion 4.2V/Cell Fixed Li-Ion 4.1V/Cell Fixed Li-Ion 4.0V/Cell Fixed LiFePO4 Programmable LiFePO4 Fixed Fast Charge LiFePO4 Fixed Standard Charge Lead-Acid Fixed Lead-Acid Programmable * Lead-Acid Only OPT VCC VCC VCC VCCin VCC INT_VCC INT_VCC VCC INT_VCC VCC VCC SDA NTC DVcc nSMBALERTSCL EQ SIZE DATE: . V E R. O N C I SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 5DEMO CIRCUIT 2039A 2 2 35V SYNCHRONOUS STEP-DOWN N/A NC GB 2 - 4 - 16 CONTROLLER BATTERY CHARGER GUI INTERFACESIZE DATE: . V E R. O N C I SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 5DEMO CIRCUIT 2039A 2 2 35V SYNCHRONOUS STEP-DOWN N/A NC GB 2 - 4 - 16 CONTROLLER BATTERY CHARGER GUI INTERFACESIZE DATE: . V E R. O N C I SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 5DEMO CIRCUIT 2039A 2 2 35V SYNCHRONOUS STEP-DOWN N/A NC GB 2 - 4 - 16 CONTROLLER BATTERY CHARGER GUI INTERFACE C32 1000pF R30 100k R24 10k R22 1.0 R28 4.7k USB Micro B RECEPTACLE TE, 1932788-1 VBUS 1 D- 2D+ 3 ID 4 GND 5 GND7 GND6 C29 10µF 6.3V 20% BAS40LP 40V 2mm R27 4.7k R31 R25 4.7k C28 10µF 6.3V 20% count+ 100k CAT5140ZI-100-GT3 VCC 6RL RW RH GND SDA3 SCL2 1 WP TP2 R32 R23 10k C30 0.47µF TP1 0.1" NC7SZ04L6X C27 10µF 6.3V 20% LTM2884CY D1+A2 D1-A1 SPND-PWRA3 ONA4 VLOA5 GNDB1 GNDB2 GNDB3 GNDB4 GNDB5 GNDB6 GNDB7 GNDB8 GNDB9 GNDB10 GNDB11 GND2 K1 GND2 K2 GND2 K3 GND2 K4 GND2 K5 GND2 K6 GND2 K7 GND2 K8 GND2 K9 GND2 K10 GND2 K11 GND2 L3 GND2 L4 GND2 L6 GND2 L7GNDA6 VBUSA7 VCCA8 VCCA9 VCCA10 VCCA11 D2- L1D2+ L2 VLO2 L5 VCC2 L8VCC2 L9VCC2 L10VCC2 L11 C31 0.1µF R26 4.7k PIC16F1459-I/ML VUSB3V314 RA5 19 Vss RA4 20 RC5 2 RC4 3 RC3 4 RC2 11 RC1/ICSPCLK 12 RC0/ICSPDAT 13 RA0/D+/ICSPDAT216 RA1/D-/ICSPCLK215 RA3/MCLR/Vpp1 Vdd RC6 5RC7 6 RB7 7 RB6 8 RB5 9 RB4 10 EPAD R29 4.7k 0.1"
Rev. D ANALOG DEVICES, INC. 2015, 2018 10/18(D) www.analog.com 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. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONL Y. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer , assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer , their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer . Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT . ADI SPECIFICALL Y DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT , OR CONSEQUENTIAL DAMAGES RESUL TING FROM CUSTOMER’S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT . Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States federal laws and regulations relating to exports. GOVERNING LAW . This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.