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4

DEMO MANUAL DC3186A

Rev. 0

TYPICAL PERFORMANCE CHARACTERISTICS

Figure 3. LTC3311 Multiphase Typical Solution Schematic

Figure 4. DC3186A-A Thermal Performance with 40A Load at Room Temperature

LTC3311

LTC3311

V

OUT

1.2V

50A

PGOOD

SW

FB

RT

EN

MODE/SYNC

ITH

PGOOD

SW

FB

RT

EN

MODE/SYNC
SSTT
ITH

22µF

×2

22µF

×2

0.01µF

0.01µF

1M

0.01µF

0.01µF

22µF

L, 100nH

22µF

L, 100nH

22µF

22µF

0.1µF

3.32k

470pF

NC

10µF

1µF

10µF

1µF

V

IN

V

IN

3V TO 5.5V

AGND PGND

SSTT

V

IN

V

IN

V

IN

AGND PGND

140k

100k

6.8pF

274k

100k

PGOOD

PGOOD

22µF

249k

MASTER

PHASE

SLAVE

PHASES

dc3186a F03

L = COILCRAFT, XEL4030-101ME

Содержание DC3186A

Страница 1: ...marks are the property of their respective owners PERFORMANCE SUMMARY The Efficiency vs Load graph shows the efficiency of the circuit with a 3 3V input for all three build options An on board transient circuit is included to measure fast transient performance The LTC3311 data sheet gives a complete description of the part its operation and application information The data sheet must be read in co...

Страница 2: ...ls up to full load and observe the voltage output regulation ripple voltage 5 Totestthetransientresponsewithabaseload addthe desired resistor to produce a minimum load between VOUT and I_STEP turrets RL shown on Figure 1 Note that the total load resistance will be RL plus R16 10mΩ The DC3186A uses a buffered signal generator input to drive a source follower circuit and to control the slew rate and...

Страница 3: ...MANUAL DC3186A Rev 0 TEST SETUP Figure 2 Technique for Measuring Output Ripple and Step Response Figure 1 Test Setup for DC3186A Demo Board PS1 3 3V 40A V VM3 VM1 V VM2 V PS2 8V 100mA SCOPE LD1 1 2V 50A SG1 RL ...

Страница 4: ...ure LTC3311 LTC3311 VOUT 1 2V 50A PGOOD SW FB RT EN MODE SYNC ITH PGOOD SW FB RT EN MODE SYNC SSTT ITH 22µF 2 22µF 2 0 01µF 0 01µF 1M 0 01µF 0 01µF 22µF L 100nH 22µF L 100nH 22µF 22µF 0 1µF 3 32k 470pF NC 10µF 1µF 10µF 1µF VIN VIN 3V TO 5 5V AGND PGND SSTT VIN VIN VIN AGND PGND 140k 100k 6 8pF 274k 100k PGOOD PGOOD 22µF 249k MASTER PHASE SLAVE PHASES dc3186a F03 L COILCRAFT XEL4030 101ME ...

Страница 5: ...t is controlled via the shared ITH node The phasing of a slave phase relative to the master phase is programmed with a resistor divider on the RT pin Refer to Table 5 of the data sheet for more information on setting the slave phase angle In the multiphase application the LTC3311 operates in forced continuous mode At light loads the slave phases will continue to operate in forced continuous mode S...

Страница 6: ... 1 R8 RES 3 32k 1 1 10W 0402 AEC Q200 PANASONIC ERJ2RKF3321X 16 4 R9 R15 R20 R21 RES 0Ω 1 16W 0402 VISHAY CRCW04020000Z0ED 17 2 R12 R13 RES 301k 1 1 16W 0402 SAMSUNG RC1005F3013CS 18 4 U1 U4 IC LOW VOLTAGE SYN STEPDOWN REG LQFN 18 ANALOG DEVICES LTC3311JV PBF Additional Demo Board Circuit Components 1 8 C1 C15 C29 C35 C39 C40 C60 C64 CAP 470µF TANT POLY 6 3V 20 7343 PANASONIC 6TCE470MI 2 6 C9 C32 ...

Страница 7: ...P 1µF X7T 6 3V 20 0201 MURATA GRM033D70J105ME01D 2 13 C3 C5 C10 C17 C19 C21 C37 C38 C41 C42 C49 CAP 22µF X7S 6 3V 20 0805 TDK C2012X7S0J226M125AC 3 2 C6 C12 CAP 0 1µF X7R 16V 10 0402 AEC Q200 MURATA GCM155R71C104KA55D 4 6 C7 C8 C20 C26 C27 C45 CAP 0 01µF X7R 6 3V 10 0201 AVX 02016C103KAT2A 5 1 C11 CAP 6 8pF C0G NP0 50V 0 5pF 0402 AVX 04025A6R8DAT2A 6 1 C14 CAP 470pF C0G 50V 5 0402 AEC Q200 TDK CGA...

Страница 8: ... 5 E6 E8 E9 E11 E25 STUD 10 32 FASTENER 0 625 LENGTH PENCOM PR1422 4 1 JP1 CONN HDR MALE 1 3 2mm VERT ST THT WURTH ELEKTRONIK 62000311121 5 4 MP1 MP4 STANDOFF NYLON SNAP ON 0 25 6 4mm KEYSTONE 8831 6 5 MP5 MP9 RING LUG 10 CRIMP 8 AWG FLAT NON INSULATED SOLDERLESS TERMINAL MOLEX 0192210223 7 10 MP10 MP19 NUT HEX 10 32 BRASS PENCOM NU1132 8 5 MP20 MP24 WASHER 10 LOCK EXT TIN FINISH PENCOM WA4526 9 1...

Страница 9: ...ET N CH 60V 120A TO 263 VISHAY SUM50020E GE3 6 2 R16 R18 RES 0 02Ω 1 10W 2818 HP METAL SENSE AEC Q200 VISHAY WSHP2818R0200FEA 7 2 R17 R19 RES 10k 5 1 16W 0402 AEC Q200 NIC NRC04J103TRF 8 1 RG1 RES 20Ω 1 1 16W 0402 AEC Q200 NIC NRC04F20R0TRF 9 1 U5 IC OPAMP BUFFER 20MHz 150mA DFN 8 ANALOG DEVICES LT1010CDD PBF Hardware For Demo Board Only 1 12 E1 E3 E5 E12 E14 E17 E19 E21 TEST POINT TURRET 0 064 MT...

Страница 10: ...STOMER NOTICE THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND SUPPLIED FOR USE WITH ANALOG DEVICES PARTS www analog com SKU NO IC NO ANALOG DEVICES 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...

Страница 11: ...ATION COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY CONTACT ANALOG DEVICES APPLICATIONS ENGINEERING FOR ASSISTANCE 2 4 NC WL 710 DC3186A_REV02 N A LTC3311 09 20 21 DATE SHEET OF TITLE SCHEMATIC APPROVALS PCB DES APP ENG SIZE SCHEMATIC NO AND REVISION CUSTOMER NOTICE THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND SUPPLIED FOR ...

Страница 12: ...OMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY CONTACT ANALOG DEVICES APPLICATIONS ENGINEERING FOR ASSISTANCE 3 4 NC WL 710 DC3186A_REV02 N A LTC3311 09 20 21 DATE SHEET OF TITLE SCHEMATIC APPROVALS PCB DES APP ENG SIZE SCHEMATIC NO AND REVISION CUSTOMER NOTICE THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND SUPPLIED FOR USE WIT...

Страница 13: ...R AND RELIABLE OPERATION IN THE ACTUAL APPLICATION COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY CONTACT ANALOG DEVICES APPLICATIONS ENGINEERING FOR ASSISTANCE 4 4 NC WL 710 DC3186A_REV02 N A LTC3311 09 20 21 DATE SHEET OF TITLE SCHEMATIC APPROVALS PCB DES APP ENG SIZE SCHEMATIC NO AND REVISION CUSTOMER NOTICE THIS CIRCUIT IS PR...

Страница 14: ...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 damage...

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