1

DEMO MANUAL DC2855A

Rev. 0

DESCRIPTION

LTC7818Triple Output Synchronous Step-Up/Dual

Step-Down Supply

Demonstration circuit DC2855A is a triple output syn-chronous step-up/dual step-down supply featuring the LTC®7818. The demonstration circuit is designed for two buck outputs 5V/10A, 3.3V/10A supplied by a boosted 10V output. Benefiting from this feature, the buck outputs are able to maintain regulation over a wide input voltage range of 4.5V to 36V which is suitable for automotive or other battery fed applications. Also, the demonstration circuit uses a drop-in layout whereas the main buck circuit components fit in an area of ¾” by 1½”, while the main boost circuit area is ¾” by 1¾”. The package style for the LTC7818 is a 40-pin exposed pad QFN.

All registered trademarks and trademarks are the property of their respective owners.

PERFORMANCE SUMMARY

The main features of the board include rail tracking (Buck channels only), an internal 5V linear regulator for bias, separated RUN pins for each output, a PGOOD signal (CH1 only), an overvoltage indicator for CH3 and a Mode selector that allow the converter to run in CCM, Pulse-skipping or Burst Mode operation. Spread Spectrum Mode is availiable for EMI improvement. Synchronization to an external clock is also possible. The LTC7818 data-sheet gives a complete description of these parts, opera-tion and application information. The datasheet must be read in conjunction with this quick start guide for demo circuit 2855A.

Design files for this circuit board are available.

Specifications are at TA = 25°C

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

VIN Input Supply Range Operating (Note 1) 4.5 36 V

Continuous operation, IOUT1 = 0A-10A, IOUT2 = 0A-10A, free air 8 16 V

VOUT1 Output1 Voltage 3.2 3.3 3.4 V

VOUT2 Output2 Voltage 4.9 5 5.1 V

VOUT3 Output3 Voltage VIN = 4.5V-10V (Note 2) 9.8 10 10.2 V

IOUT1 Output1 Current 0 10 A

IOUT2 Output2 Current 0 10 A

IOUT3 Output3 Current 0 10 (Note 3) A

fSW Switching Frequency 2200 kHz

POUT/PIN Efficiency VIN = 12V, VOUT1 = 3.3V, IOUT1 = 10A, RUN2 = 0 88 %

VIN = 12V, VOUT2 = 5V, IOUT2 = 10A, RUN1 = 0 91.6 %

VIN = 12V, VOUT1 = 5V, VOUT2 = 3.3V, IOUT1 = 10A, IOUT2 = 10A 90 %

VIN = 8V, VOUT3 = 10V, IOUT3 = 10A, RUN1, 2 = 0 94.6 %

Note 1: When 4.5V < VIN < 8V and 16V < VIN < 36V, only short time operation is allowed at maximum output power (free air). For example, run 10sec when VIN = 4.5V, 2min when VIN = 6V, 2min when VIN = 26V, 10s when VIN = 36V or continuously operate for de-rated output current.Note 2: VOUT3 follows VIN when VIN > VOUT3.Note 3: 10A Maximum output includes the current supplying CH1 and CH2.

2

DEMO MANUAL DC2855A

Rev. 0

QUICK START PROCEDUREDemonstration circuit DC2855A is easy to set up to evalu-ate the performance of the LTC7818. Refer to Figure 1 for the proper measurement equipment setup and follow the procedure below:

NOTE: When measuring the output voltage ripple, care must be taken to avoid a long ground lead on the oscil-loscope probe. Measure the input or output voltage ripple by touching the probe tip directly across the VIN or VOUT and GND termnals or directly across the relevant capaci-tor. See Figure 2 for proper scope probe technique.

1. Place jumpers in the following positions:

JP1 ON

JP2 ON

JP3 ON

JP4 SPREAD OFF

JP5 Force Continuous Mode (FCM)

2. With power off, connect the input power supply to VIN and GND. With power off, connect loads from VOUT to GND.

3. Turn on the power at the input.

NOTE: Make sure that the input voltage does not exceed 36V.

4. Check for the proper output voltages.

VOUT1 = 3.2V to 3.4V

VOUT2 = 4.9V to 5.1V

VOUT3 = 9.8V to 10.2V (VOUT3 follows VIN when VIN is higher than 10V)

NOTE: If there is no output, temporarily disconnect the load to make sure that the load is not set too high.

5. Once the proper output voltages are established, adjust the loads within the operating ranges and observe the output voltage regulation, ripple voltage, efficiency, and other parameters.

Figure 1. Proper Measurement Equipment Setup

3

DEMO MANUAL DC2855A

Rev. 0

QUICK START PROCEDURE

Mode Selection, Spread Spectrum, and Frequency Synchronization

The Demonstration circuit 2855A’s Mode selector allows the converter to run in FCM operation, pulse skip opera-tion, and Burst Mode by changing the position of JP5.

Spread Spectrum is enabled by placing JP4 to “ON” posi-tion. For synchronizing to an external clock source, JP4 jumper needs to be removed. Apply the external clock from PLLIN/SPREAD turret to GND. Refer to Table 1 and to the datasheet for more details.

Rail Tracking

Demonstration circuit 2855A is configured for an on-board soft-start circuit. The soft-start ramp rate can be adjusted by changing the value of C2 and C47. Demonstration cir-cuit 2855A can also be modified to track an external ref-erence. Refer to Table 2 and Table 3 for tracking options and to the datasheet for more details.

Figure 2. Proper Measurement Equipment Setup

VOUT GND

COUT

Table 1. Mode Selection and Synchronizing Operation OptionsCONFIGURATION MODE JUMPER

Forced CCM Mode Operation “FCM”

Pulse Skip Mode Operation “PS”

Burst Mode Operation “BURST”

Synchronize to Ext. clock (Ext. clock apply to PLLIN/SPREAD turret) Remove Jumper JP4

Spread Spectrum Mode “SPREAD ON”

Table 2. VOUT1 Tracking OptionsCONFIGURATION R2 R3 C2 TRK/SS1 CAP

Soft Start Without Tracking (Default) OPEN OPEN 0.1uF OPEN

VOUT1 Tracking Scaled VOUT2 Resistor Divider OPEN OPEN

Table 3. VOUT2 Tracking OptionsCONFIGURATION R34 R37 C47 TRK/SS2 CAP

Soft Start Without Tracking (Default) 0Ω OPEN 0.1uF OPEN

VOUT2 Equals External Ramp 0Ω OPEN OPEN External Ramp

VOUT2 Tracking Scaled External Ramp Resistor Divider OPEN External Ramp

4

DEMO MANUAL DC2855A

Rev. 0

QUICK START PROCEDUREOptional Inductor DCR Current Sensing

Demonstration circuit 2855A provides an optional circuit for Inductor DCR Current Sensing. Inductor DCR Current Sensing uses the DC resistance of the inductor to sense the inductor current instead of discrete sense resistors. The advantages of DCR sensing are lower cost, reduced board space, and higher efficiency, but the disadvantage is a less accurate current limit. If DCR sensing is used, be sure to select an inductor with a sufficiently high satura-tion current.

Refer to Table  4 for Optional Inductor DCR Current Sensing setup and to the datasheet for more details.

Low Quiescent Current Applications

The typical quiescent current (IQ) of the LTC7818 control-ler is 14uA in sleep mode as specified in the LTC7818 datasheet. However, the input current of the DC2855A board can be higher than this value because of the addi-tional circuit outside of the IC. Several methods can be adopted to reduce the total input current: (1) Large value FB divider resistors should be used; (2) If 8V or 10V boost output is required, connecting VPRG3 to GND or INTVCC, with VFB3 directly connected to the output can reduce IQ; (3) In addition, the optional pull-up resistors should be removed from the board.

Minimum On-Time Causes Channel 2 And Channel 3 To Skip Pulses

The typical minimum on-time Ton(min) of the LTC7818 is 40ns for the Buck channels, and 80ns for the boost channel as specified in the datasheet. Therefore, when the input voltage is higher than 30V the CH2 may start to skip pulses at no load condition. And when the input voltage is higher than 7.5V, the CH3 may start to skip pulses at no load condition.

Thermal Derating Of The Buck Channels

The maximum DC output current of each Buck channel is specified at the nominal input voltage, which is 8V~16V. At higher input voltage, because of the increased power losses, the output currents should be derated. The power devices (Power MOSFETs, inductors) surface temperature must be monitored to ensure safe steady-state operation at higher input voltages.

EXTVCC Supply

With the high switching frequency, the power losses im-posed on the LTC7818 on-board gate drivers and LDO become a concern. Apply an external supply voltage to the EXTVCC turret can help reduce LDO loss. On the DC2855A board, by removing R55 and placing zero ohm for R93, 5V (output of channel 2) will be provided for EXTVCC.

Table 4. Optional Inductor DCR Current Sensing

CONFIGURATION

CHANNEL1 RS1 R29 R30 C14 R45 R47 R61

CHANNEL2 RS2 R39 R40 C15 R51 R53 R62

CHANNEL3 RSNS1,2 R80 R81 C56 R89 R90 R91

Current Sense Resistor (Default) Ref. Sch. Ref. Sch. Ref. Sch. Ref. Sch. OPEN OPEN OPEN

Inductor DCR Current Sensing 0Ω Copper OPEN OPEN Calculated Value from Datasheet 0Ω

5

DEMO MANUAL DC2855A

Rev. 0

TYPICAL PERFORMANCE CHARACTERISTICS

LOAD CURRENT (A)0

VOLT

AGE

DROP

(mV)

80

20

10

30

70

50

60

40

042 6 8 10

LOAD CURRENT (A)0.1

EFFI

CIEN

CY (%

)

95

45

85

65

75

55

351 10

FCMBURSTPSM

FCMBURSTPSM

LOAD CURRENT (A)0.10

EFFI

CIEN

CY (%

)

95

55

75

85

65

45

50

60

70

80

90

1.00 10.00

LOAD CURRENT (A)0.1

EFFI

ECIE

NCY

(%)

90

40

80

60

70

50

301 10

FCMBURSTPSM

Figure 3. CH1 Efficiency (VIN = 12V, VOUT1 = 3.3V) Figure 4. CH2 Efficiency (VIN = 12V, VOUT2 = 5V)

Figure 5. CH3 Efficiency (VIN = 8V, VOUT3 = 10V) Figure 6. CH3 Voltage Drop in Pass-through Mode

6

DEMO MANUAL DC2855A

Rev. 0

TYPICAL PERFORMANCE CHARACTERISTICS

100μs/DIV

100mV/DIV

5A/DIV

DC2855 F07a100μs/DIV

100mV/DIV

5A/DIV

DC2855A F07b

Figure 7. Transient Response Waveform at 12V VIN and 5A – 10A – 5A load current

Figure 8. Thermal Image: VIN = 12V, VOUT1 = 3.3V, IOUT1 = 10A, VOUT2 = 5V, IOUT2 = 10A, NO AIR FLOW, TA = 25°C

(a) CH1: VOUT1 = 3.3V

(a) Front view

(b) CH1: VOUT2 = 5V

(b) Back view

7

DEMO MANUAL DC2855A

Rev. 0

Figure 9. Picture of demo board

TYPICAL PERFORMANCE CHARACTERISTICS

8

DEMO MANUAL DC2855A

Rev. 0

PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART, NUMBER

Required Circuit Components

1 6 C2, C17, C20, C21, C47, C52

CAP., 0.1uF, X7R, 25V, 10%, 0603 AVX, 06033C104KAT2A

2 1 C4 CAP., 1uF, X7R, 16V, 10%, 0603 KEMET, C0603C105K4RAC7867

3 1 C11 CAP., 4.7uF, X5R, 6.3V, 10%, 0805 AVX, 08056D475KAT2A

4 5 C14, C15, C56, C62, C74 CAP., 1000pF, X7R, 50V, 10%, 0603 AVX, 06035C102KAT2A

5 8 C32, C36, C79, C80, C81, C82, COUT1, COUT4

CAP., 47uF, X5R, 6.3V, 20%, 1206 MURATA, GRM31CR60J476ME19L

6 2 C37, C49 CAP., 10pF, X7R, 50V, 10%, 0603 AVX, 06035C100KAT2A

7 1 C41 CAP., 2200pF, X7R, 25V, 10%, 0603 AVX, 06033C222KAT2A

8 2 C42, C43 CAP., 47pF, C0G, 50V, 5%, 0603, AEC-Q200 AVX, 06035A470J4T2A

9 1 C44 CAP., 2200pF, X7R, 50V, 10%, 0603 AVX, 06035C222KAT2A

10 9 C50, C51, CIN6, CIN7, COUT6, COUT7, COUT8, CIN8, CIN9

CAP., 10uF, X7S, 50V, 10%, 1210 TAIYO YUDEN, UMK325C7106KM-T

11 1 C53 CAP., 820pF, C0G, 50V, 5%, 0603 AVX, 06035A821JAT2A

12 1 C54 CAP., 0.01uF, X7R, 50V, 10%, 0603 AVX, 06035C103KAT2A

13 10 C64, C65, C66, C67, C68, C69, C70, C71, C77, C78

CAP., 1uF, X7R, 50V, 10%, 0805 TAIYO, YUDEN, UMK212B7105KG-T

14 2 CIN1, COUT10 CAP., 120uF, ALUM. ELECT., 50V, 20%, 10x10.2mm SMD, RADIAL, AEC-Q200

PANASONIC, EEHZC1H121P

15 2 D1, D2 DIODE, SCHOTTKY, 40V, 250mW, SOD-323 CENTRAL SEMI., CMDSH-4E, TR, Lead, Free

16 1 D6 DIODE, SCHOTTKY, 100V, 250mW, SOD-323 ROHM, RB578VYM100FH

17 2 L1, L2 IND., 0.3uH, PWR., 20%, 10A, 21.45mOHMS, SMD 7.5mmX7.5mm, AEC-Q200

COILCRAFT, XAL7030-301ME

18 1 L3 IND., 0.18uH, PWR., 20%, 120A, 11.3x10mm SMD, XAL1060, AEC-Q200

COILCRAFT, XAL1060-181MEC

19 4 Q1, Q2, Q3, Q4 XSTR., MOSET, N-CH, 40V, 50A, PG-TDSON-8-33, AEC-Q101

INFINEON, IPC50N04S5L-5R5

20 2 Q8, Q10 XSTR., MOSFET, N-CH, 40V, 90A, PG-TDSON-8-33, AEC-Q101

INFINEON, IPC90N04S5L-3R3

21 18 R9, R25, R29, R34, R36, R39, R55, R70, R78, R80, R84, R87, R94, R95, R96, R97, R98, R99

RES., 0 OHM, 1/10W, 0603, AEC-Q200 VISHAY, CRCW06030000Z0EA

22 2 R10, R105 RES., 0 OHM, 1W, 2512, 7A, AEC-Q200 VISHAY, CRCW25120000Z0EG

23 2 R30, R40 RES., 20 OHM, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ-3EKF20R0V

24 5 R26, R38, R46, R48, R104

RES., 100k OHMS, 5%, 1/10W, 0603 PANASONIC, ERJ3GEYJ104V

25 2 R106, R107 RES., 0 OHMS, 2W, 2512 LONG SIDE TERM, AEC-Q200

VISHAY, RCL12250000Z0EG

26 1 R27 RES., 210k OHMS, 1%, 1/10W, 0603 NIC, NRC06F2103TRF

27 1 R31 RES., 10k OHMS, 1%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3EKF1002V

28 2 R32, R33 RES., 68.1k OHMS, 1%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3EKF6812V

29 1 R35 RES., 9.1k OHMS, 1%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3EKF9101V

9

DEMO MANUAL DC2855A

Rev. 0

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART, NUMBER

30 1 R43 RES., 357k OHMS, 1%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3EKF3573V

31 1 R75 RES., 3.6k OHMS, 1%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3EKF3601V

32 1 R81 RES., 249 OHMS, 1%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3EKF2490V

33 1 R86 RES., 2.2 OHMS, 5%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3GEYJ2R2V

34 1 R92 RES., 1M OHM, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW06031M00FKEA

35 2 RS1, RS2 RES., 0.003 OHMS, 5%, 1W, 1210, AEC-Q200 ROHM, PMR25HZPJV3L0

36 1 RSNS1 RES., 0.002 OHMS, SENSE, 1%, 2W, 2010, AEC-Q200, PULSE PROOF

VISHAY, WSLP20102L000FEA

37 1 U1 IC, HIGH FREQ. SYNCHRONOUS STEP UP/DUAL STEP-DOWN POWER SUPPLY, 40QFN

ANALOG DEVICES, LTC7818EUJ#PBF

Additional Demo Board Circuit Components

1 0 C38, C48, C55, C57, C60, C75, C76

CAP., OPTION, 0603

2 0 C58, C59 CAP., OPTION, 1210

3 0 C61, C72, C73, C83, C84, C85, C86

CAP., OPTION, 0805

4 0 COUT2, COUT5 CAP., OPTION, 7343

5 0 FB1, FB2 IND., OPTION, 1812

6 0 Q9, Q11 XSTR., OPTION, MOSFET N-CH, PG-TDSON-8

7 0 Q12, Q13, Q14, Q15, Q16, Q17, Q18, Q19

XSTR., OPTION, MOSFET N-CH, PPAK SO-8

8 0 R2, R3, R28, R37, R41, R45, R47, R51, R53, R61, R62, R72, R76, R77, R79, R85, R89, R90, R91, R93, R100, R103

RES., OPTION, 0603

9 0 R82 RES., OPTION, 1206

10 0 RSNS2 RES., OPTION, 2010

Hardware: For Demo Board Only

1 21 E1, E4, E9, E10, E11, E12, E13, E14, E22, E23, E24, E25, E26, E27, E30, E31, E32, E33, E34, E35, E36

TEST POINT, TURRET, 0.094" MTG. HOLE, PCB 0.062" THICK

MILL-MAX

2 8 J7, J8, J9, J10, J11, J12, J13, J14

CONN., BANANA JACK, FEMALE, THT, NON-INSULATED, SWAGE, 0.218"

KEYSTONE

3 4 JP1, JP2, JP3, JP4 CONN., HDR, MALE, 1x3, 2mm, VERT, STR, THT, NO SUBS. ALLOWED

WURTH ELEKTRONIK

4 1 JP5 CONN., HDR, MALE, 2x3, 2mm, VERT, STR, THT WURTH ELEKTRONIK

5 5 XJP1, XJP2, XJP3, XJP4, XJP5

CONN., SHUNT, FEMALE, 2 POS, 2mm WURTH ELEKTRONIK

6 4 MP1, MP2, MP3, MP4 STANDOFF, NYLON, SNAP-ON, 0.50" WURTH ELEKTRONIK

PARTS LIST

10

DEMO MANUAL DC2855A

Rev. 0

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USTI

NE D

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m

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PR

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1

11

DEMO MANUAL DC2855A

Rev. 0

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.

Rep

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OVAL

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APP

ENG.

SIZE

:

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MAT

IC N

O. A

ND R

EVIS

ION:

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ANA

LOG

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CES

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ICAT

IONS

ENG

INEE

RING

FOR

ASS

ISTA

NCE.

2555

AUG

USTI

NE D

RIVE

www.

analo

g.co

m

ANAL

OGDE

VICE

SAH

EAD

OF W

HAT'S

POS

SIBL

ETM

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A CL

ARA,

CA

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4

22

LT LING

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LOW

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IGH

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sday

, Nov

embe

r 06,

201

9DA

TE:

SHEE

TOF

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E: S

CHEM

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OVAL

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B DE

S.

APP

ENG.

SIZE

:

SCHE

MAT

IC N

O. A

ND R

EVIS

ION:

CUST

OMER

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ICE

THIS

CIR

CUIT

IS P

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ALOG

DEV

ICES

AND

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LIED

FO

R US

E W

ITH

ANAL

OG

DEV

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TS.

SKU

NO.

IC N

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OG D

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ES H

AS M

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LOG

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ICAT

IONS

ENG

INEE

RING

FOR

ASS

ISTA

NCE.

2555

AUG

USTI

NE D

RIVE

www.

analo

g.co

m

ANAL

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HAT'S

POS

SIBL

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SANT

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ARA,

CA

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4

22

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sday

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r 06,

201

9DA

TE:

SHEE

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B DE

S.

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SIZE

:

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OMER

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THIS

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ANA

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DEVI

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IONS

ENG

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RING

FOR

ASS

ISTA

NCE.

2555

AUG

USTI

NE D

RIVE

www.

analo

g.co

m

ANAL

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EAD

OF W

HAT'S

POS

SIBL

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sday

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embe

r 06,

201

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AR

EV

04

12

DEMO MANUAL DC2855A

Rev. 0

ANALOG DEVICES, INC. 2020

01/20www.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 ONLY. 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 SPECIFICALLY 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 RESULTING 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.