DC2798A 60V双相单输出同步升压控制器带PMBus演示说明书-USB迷|专注于互联网分享

2023年12月14日发(作者：第莎)

DEMO MANUAL DC2798ALTC784160V Dual-Phase Single Output Synchronous

Boost Controller with PMBusDESCRIPTIONDemonstration circuit 2798A is a high voltage, dual-phase

single output boost converter with 10V to 16V input

range. The output voltage is adjustable from VIN to 48V.

And the output can supply a 10A maximum load current.

The demo board has a LTC7841 controller, which is a

60V dual-phase single output boost controller with digital

power system management. Please see the LTC7841 data

sheet for more detailed DC2798A powers up to default settings and pro-duces power based on the command from the serial bus

communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power sys-tem management features of the part, download the GUI

software LTpowerPlay® onto your PC and use ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to the board.

LTpowerPlay allows the user to reconfigure the part on-the-fly, view telemetry of voltage, current, temperature

and fault DownloadThe software can be downloaded from: LTpowerPlayFor more details and instructions of LTpowerPlay, please

refer to LTpowerPlay GUI for LTC7841 Quick Start files for this circuit board are registered trademarks and trademarks are the property of their respective PHOTOFigure 1. Single-Output LTC7841/DC2798A Demo CircuitRev. 01DEMO MANUAL DC2798APERFORMANCE SUMMARYPARAMETERInput Voltage RangeOutput Voltage, VOUTMaximum Output Current, IOUTTypical EfficiencyDefault Switching FrequencyVIN = 10V to 16V, IOUT = 0A to 10AVIN = 10V to 16V, VOUT = 16V to 48VVIN =12V, VOUT = 48V, IOUT = 10ACONDITIONSSpecifications are at TA = 25°CMIN10161097.4 (See Figure 5)150TYPMAX1648 (Default)UNITSVVA%kHzQUICK START PROCEDUREDemonstration circuit DC2798A is easy to set up to evalu-ate the performance of the LTC7841. Refer to Figure 2 for

the proper measurement equipment set-up and follow the

procedure below.1. With power off, connect the input power supply to VIN

(10V to 16V) and GND (input return).2. Connect the 48V output load between VOUT0 and GND

(Initial load: No Load).3. Connect the DVMs to the input and outputs. Set default

jumper position: JP1: 100mV (ILIM); JP2: FLOAT; JP3:

CCM; JP4: ON.4. Connect the dongle to DC2798A and turn on the input

power supply.5. Follow the LTpowerPlay Quick Start Procedure section

to set the proper output voltage.6. Once the proper output voltages are established,

adjust the loads within the operating range and ob-serve the output voltage regulation, ripple voltage and

other : When measuring the output or input voltage rip-ple, do not use the long ground lead on the oscilloscope

probe. See Figure 3 for the proper scope probe technique.

Short, stiff leads need to be soldered to the (+) and (–)

terminals of an output capacitor. The probe’s ground ring

needs to touch the (–) lead and the probe tip needs to

touch the (+) 2. Proper Measurement Equipment Set-Up2Rev. 0DEMO MANUAL DC2798AQUICK START PROCEDURE+VOUTCOUTGND–Figure 3. Measuring Output Voltage RippleConnecting a PC to DC2798AYou can use a PC to configure the power management

features of the LTC7841 such as: nominal VOUT, margin

set points, ON/OFF control. The DC1613A dongle may be

plugged when VIN is 4. Demo Set-Up with PC3Rev. 0DEMO MANUAL DC2798AQUICK START PROCEDURE1009998EFFICIENCY

(%)97969594939291900246LOAD CURRENT (A)810dc2798a F05Figure 5. Efficiency vs Load Current at VIN = 12V, fS = 150kHz, VOUT = 48VVOUT20MHz BW100mV/DIVVOUT20MHz BW200mV/DIV0A TO 2.5ALOAD STEP200μs/DIVdc2798A F065μs/DIVdc2798A F07Figure 6. VOUT Load Transient Response at VIN = 12V, VOUT = 48V Figure 7. VOUT Voltage Ripple at VIN = 12V, VOUT = 48V, IOUT = 10AFigure 8. Thermal at VIN = 12V, VOUT = 48V, IOUT = 10A, TA = 25°C, No Airflow4Rev. 0DEMO MANUAL DC2798ALTPOWERPLAY SOFTWARE GUILTpowerPlay is a powerful Windows-based development

environment that supports Analog Devices power sys-tem management ICs and μModules, including LTM4675,

LTM4676, LTM4677, LTM4678, LTM4680, LTM4700,

LTM4664, LTC3880, LTC3882, LTC3883, LTC3884,

LTC7880 and LTC7841. The software supports a variety

of different tasks. You can use LTpowerPlay to evaluate

Analog Devices ICs by connecting to a demo board sys-tem. LTpowerPlay provides unprecedented diagnostic and

debug features. It becomes a valuable diagnostic tool dur-ing board bring-up to program or tweak the power man-agement scheme in a system, or to diagnose power issues

when bringing up rails. LTpowerPlay utilizes the DC1613A

USB-to-SMBus controller to communicate with one of

many potential targets, including LTM4675, LTM4676,

LTM4677, LTM4678, LTM4680, LTM4700, LTM4664,

LTC3880, LTC3882, LTC3883, LTC3884, LTC7880 and

LTC7841’s demo system, or a customer board. The soft-ware also provides an automatic update feature to keep

the software current with the latest set of device drivers

and documentation. The LTpowerPlay software can be

downloaded from: LTpowerPlayTo access technical support documents for LTC Digital

Power Products visit the LTpowerPlay Help menu. Online

help also available through the 9. LTpowerPlay Main Interface5Rev. 0DEMO MANUAL DC2798ALTPOWERPLAY QUICK START PROCEDUREThe following procedure describes how to use LTpowerPlay

to monitor and change the settings of LTC7841.1. Download and install the LTPowerPlay GUI: LTpowerPlay2. Launch the LTpowerPlay GUI.a. The GUI should automatically identify the DC2798A. The

system tree on the left hand side should look like this:c. Writing to the MFR_VOUT_COMMAND register via the

PMBus allows the adjustment of the VOUT reference

from 0% to 100% of the maximum reference of 2.4V.

With current demo board setting (R193 = 191k, and

R194 = 10k), the VFB/VOUT ratio is about 1/20. Follow

Equation 1 to get the correct VOUT. VOUT = 20 • MFR_VOUT_COMMAND (%) • 2.4 (1) If you want to set the output voltage to be 48V. In the

Config tab, type in 99.8 in the MFR_VOUT_COMMAND_LTC7841 box, like this:

b. A green message box shows for a few seconds in the

lower left-hand corner, confirming that LTC7841 is

communicating: Then, click the “W” (PC to RAM) icon to write these

the VOUT internal reference voltage is set to ~2.4V.

If the write is successful, you will see the following

message:

6Rev. 0DEMO MANUAL DC2798ALTPOWERPLAY QUICK START PROCEDUREd. If you want to set the output voltage to be 24V. In the

Config tab, type in 50 in the MFR_VOUT_COMMAND_LTC7841 box. Then the VOUT internal reference voltage

is set to ~ In order to turn on the power stage, click the “Apply

an operation to all devices” icon

f. In the popup “Apply an operation to all devices” dialog

box, click the “On” button to turn on the power stage

g. After the test, in the popup “Apply an operation to all

devices” dialog box, click the “Immediate Off” button

to turn off the power stage.7Rev. 0DEMO MANUAL DC2798APARTS LISTITEM8293031323334QTY432211311111REFERENCEC1, C85-C87C3, C105, C120C9, C23C10-C12, C24-C26, C88,

C93, C122, C123C13, C28C18C20C71, C77C94, C95, C115, C116C104C106, C117C107-C114C118C119C121C124C125, C126D1, D2D5L1, L2Q1, Q2, Q5, Q6Q3, Q4, Q7, Q8R13, R15, R194R14, R37R21, R44R90, R92R183R185R192, R198, R199R193R200R201R202U1PART DESCRIPTIONCAP., 470µF, ALUM POLY HYB, 25V, 20%, 10x10.2mm, G,

SMD, RADIAL, AEC-Q200CAP., 4.7µF, X5R, 25V, 10%, 0603CAP., 0.22µF, X7R, 25V, 10%, 0603CAP., 10µF, X7R, 63V, 10%, 1210CAP., 0.01µF, X7R, 16V, 10%, 0603CAP., 0.01µF, X7R, 25V, 10%, 0603, AEC-Q200CAP., 100pF, C0G/NP0, 50V, 5%, 0603CAP., 1000pF, C0G, 100V, 5%, 0805CAP., 22µF, X7R, 25V, 10%, 1210CAP., 470pF, X7R, 50V, 10%, 0603CAP., 0.1µF, X7R, 100V, 10%, 0603MANUFACTURER/PART NUMBERPANASONIC, EEHZK1E471PMURATA, GRM188R61E475KE15DMURATA, GRM188R71E224KA88DSAMSUNG, CL32B106KMVNNWEAVX, 0603YC103KAT2AAVX, 06033C103K4Z2AAVX, 06035A101JAT2ATDK, C2012C0G2A102J060AASAMSUNG, CL32B226KAJNNNEAVX, 06035C471KAT2AAVX, 06031C104KAT2ARequired Circuit ComponentsCAP., 68µF, ALUM POLY HYB, 63V, 20%, 10x10.2mm, G, SMD, PANASONIC, EEHZC1J680PRADIAL, AEC-Q200CAP., 120pF, C0G/NPO, 100V, 5%, 0603CAP., 1000pF, X7R, 16V, 10%, 0603CAP., 390pF, COG/NPO, 50V, 5%, 0603CAP., 2.2µF, X7S, 16V, 10%, 0603, AEC-Q200CAP., 1µF, X7S, 100V, 10%, 0805DIODE, SCHOTTKY, 100V, 1A, POWERDI-123DIODE, ZENER, 6.8V, 400mW, SOD-323IND., 6.8µH, POWER SHIELDED WIREWOUND, 10%, 30A,

0.00205Ω, 27.9mm x 27.94mmXSTR., MOSFET, N-CH, 60V, 64A, PG-TDSON-8XSTR., MOSFET, N-CH, 60V, 100A, PG-TDSON-8RES., 10k, 1%, 1/10W, 0603RES., 0.002Ω, 1%, 3W, 2512, METAL, SENSE, AEC-Q200RES., 100Ω, 1%, 1/10W, 0603, AEC-Q200RES., 1.0Ω, 5%, 1/2W, 0805RES., 5.1k, 1%, 1/10W, 0603, AEC-Q200RES., 100k, 1%, 1/10W, 0603, AEC-Q200RES., 191k, 1%, 1/10W, 0603RES., 30k, 1%, 1/10W, 0603, AEC-Q200RES., 38.3k, 1%, 1/10W, 0603, AEC-Q200RES., 150k, 1%, 1/10W, 0603IC, POWER CONTROLLER, QFN-36 (5x6)AVX, 06031A121JAT2AWURTH ELEKTRONIK, 885012206034AVX, 06035A391JAT2ATDK, CGA3E1X7S1C225K080ACMURATA, GRJ21BC72A105KE11LDIODES INC., DFLS1100-7NEXPERIA, PDZ6.8B, 115COILCRAFT, SER2915H-682KLINFINEON, BSC065N06LS5INFINEON, BSC027N06LS5VISHAY, CRCW060310K0FKECPANASONIC, ERJMS4SF2M0UPANASONIC, ERJ3EKF1000VPANASONIC, ERJ6DQJ1R0VNIC, NRC06F5101TRFVISHAY, CRCW0603100KFKEAVISHAY, CRCW0603191KFKEAKOA SPEER, RK73H1JTTD3002FNIC, NRC06F3832TRFPANASONIC, ERJ3EKF1503VANALOG DEVICES., LTC7841EUHE#PBFRES., 470k, 1%, 210mW, 0805, NTC THERMISTOR, AEC-Q200VISHAY, NTCS0805E3474FXT8Rev. 0DEMO MANUAL DC2798APARTS LISTITEM78910QTY4REFERENCEC5C19, C35D3D4D6Q9Q10R11, R19, R20, R42, R47,

R187, R196R12, R17, R22, R38, R43,

R184, R186, R188R16, R197R27R28U2E1-E7, E10, E15, E22, E37-E40, E42, E44J1-J4J5J6J7JP1, JP2JP3JP4MP1-MP4XJP2, XJP7-XJP9PART DESCRIPTIONCAP., 0.1µF, X7R, 50V, 10%, 0603CAP., OPTION, 0603LED, GREEN, WATERCLEAR, 1206LED, RED, WATERCLEAR, 1206DIODE, OPTION, SCHOTTKY, POWERDI 123XSTR., MOSFET N-CH, 60V, 300mA, SOT-23XSTR., MOSFET, P-CH, 20V, 5.9A, TO-236 (SOT23-3)RES., OPTION, 0603RES., 0Ω, 1/10W, 0603, AEC-Q200RES., 4.99k, 1%, 1/10W, 0603RES., 200Ω, 1%, 1/10W, 0603RES., 127Ω, 1%, 1/10W, 0603, AEC-Q200IC, MEMORY, EEPROM, 2Kb (256x8), TSSOP-8, 400kHzTEST POINT, TURRET, 0.094" MTG. HOLE, PCB 0.062" THKEVAL BOARD STUD HARDWARE SET, #10-32CONN., HDR, SHROUDED, MALE, 2×6, 2mm, VERT, ST, THTCONN., HDR, FEMALE, 2×4, 2mm, R/A THTCONN., HDR, MALE, 2×4, 2mm, R/A THTCONN., HDR, MALE, 1×4, 2mm, VERT, ST, THTCONN., HDR., MALE, 2×3, 2mm, VERT, ST, THTCONN., HDR, MALE, 1×3, 2mm, VERT, ST, THTSTANDOFF, NYLON, SNAP-ON, 0.625 (5/8"), 15.9mmCONN., SHUNT, FEMALE, 2-POS, 2mmVISHAY, CRCW06030000Z0EAPANASONIC, ERJ3EKF4991VVISHAY, CRCW0603200RFKEANIC, NRC06F1270TRFMICROCHIP, 24LC025-I/STMILL-MAX, 2501-2-00-80-00-00-07-0ANALOG DEVICES, 720-0010FCI, 98414-G06-12ULFSULLINS CONNECTOR SOLUTIONS,

NPPN042FJFN-RCMOLEX, 87760-0816SAMTEC, TMM-104-02-L-SWURTH ELEKTRONIK, 62000621121WURTH ELEKTRONIK, 62000311121KEYSTONE, 8834SAMTEC, 2SN-BK-GVISHAY, 2N7002K-T1-GE3VISHAY, Si2365EDS-T1-GE3WURTH ELEKTRONIK, 150120GS75000WURTH ELEKTRONIK, 150120RS75000MANUFACTURER/PART NUMBERAVX, 06035C104KAT2AAdditional Demo Board Circuit ComponentsHardware For Demo Board Only9Rev. 013475mV50mV22+1+C108C10768uF63VC110C10968uF63V48V

10AR170E554.7uFC1242.2uFINTVCC2Q2BSC065N06LS54R901.00805R141C711000pFVINSW02215D145Q1BSC065N06LS521C1191000pFILIMSCHEMATIC DIAGRAMINTVCCEXTVCCR1201123123TG155BOOST1SW1BG1SENSE1+123SENSE1-123VOUTITH0.01uFC20100pFC130.01uF14ITHR1835.1kC181VSENSE0+3ISENSE0-2ISENSE0+R19OPTR220C19OPTR20OPTR2110025BG04428SW026BOOST0Q3BSC027N06LS5Q4BSC027N06LS5C95C9422uF1210SER2915H-682KL0.002251227TG034CSLEWTSNSVOUT_CFGFREQPHASMDCLKOUTPLLIN/MODERUNU1LTC7841-UHE333245CLKOUTPLLIN/MODE9R1880VBIAS24VBIASSSVOUT052INTVCC5C234Q6BSC065N06LS51231234SW1R921.008055VSENSE0+Q7BSC027N06LS544Q8BSC027N06LS55C771000pF08050.22uFVOUT0TG2BOOST2SW231ALERTSCLSDAPGOODC118120pFVFB13R193191kSENSE2+12ISENSE1+SENSE2-11ISENSE1-BG220BG130291617SW119BOOST1R38018TG11D210C1054.7uF0.1uFC10676122DEMO MANUAL DC2798A1CLKOUTINTVCCHDR.Q5BSC065N06LS5+21CCM21C24C2510uF63V1210C26C9310uF63V1210C112C11168uF63V2VCCFSGNDSGNDPGND368371231OND61INTVCCC1170.1uFOPT2C280.01uF2R202150k6.8VR19410kC121390pF123RUN231043215ECOREV2PRODUCTIONXC11-18-19REVISION

HISTORYDESCRIPTIONAPPROVEDDATEINTVCC12VOUT0ILIMGNDE1D100mVVOUT0J3DE40INTVCCEXTVCCR1840C3VOUT0VOUT04.7uFC120C104470pFEXTVCCEXTVCCJP1E2C125C1261uF100V0805C122C12310uF63V1210C11C1010uF63V1210C88C1210uF63V1210VOUT0_SNSVSENSE0+J4GNDE6GNDE3VINJ1VIN++10V

16VJ2GNDCINTVCCINTVCCR185

NTCR185470kR199100kR186C90.22uF35ASEL0805L16.8uH0R20030kINTVCCR187OPTC116C11522uF1210C85C1470uFC87C86470uFCE4GNDPHASMDINTVCCINTVCCVIN1RUN2FLOAT3GND4JP2VOUT0E22+C114C11368uF63VPULSE

SKIPR19843BURST

MODE100k65E37CLKINJP3BCLKINBE38L26.8uHSER2915H-682KLR370.0022512RUNVINR42OPTC35OPTR47OPTR44100R430OFF3D5R20138.3kPDZ6.8BJP4E39VBIASALERTSCLSDAPGOODE42R1310kR1510kR192100kPGOODR11OPTACUSTOMER

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DESIGNSDAE44SDASCLALERT3V3R196CLKINOPTSCLE15E10ALERTDD3V3_BIASJ5SCLALERTAUXPSDAE7SCHEMATIC DIAGRAMAUXPSDAGNDSCLLGKPWRALERTBGPIO_1OUTEN_0OUTEN_1GNDAUXSCLAUXSDA1112J7J6TO

DC1613AC50.1uFCTRLALERTBSDASCLAUXPUNUSEDUNUSEDGND12345678CTRLALERTBSDASCLAUXPUNUSEDUNUSEDGND12345678C24LC025-I/STU28AUXP3V33V3DEMO

HEADER

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(F)C1A0A1A2VSSALERTVCCWPSCLSDA125EESDAR2720023EESCL76R1974.99k1%R164.99k1%4Q10Si2365EDS2D3GREEN12D4RED3Q9PGOOD12N700221R28127BBPCA

ADDITIONAL

PARTSMP1MP2MP3MP4LB1PCB1STNCL1PCB,

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PARTS.432Information 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 FF,NYLON,SNAP-ON,0.625

(5/8"),15.9mmSTANDOFF,NYLON,SNAP-ON,0.625

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