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User Guide 113

UG113.0

February 15, 2017

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4

ISL85014EVAL1Z Schematic

FIGURE 3. ISL85014EVAL1Z SCHEMATIC

Enable

Disable

Internal Compensation

600kHz

300kHz

FCCM

DEM

Hiccup

Latch off

R10

200

PG

C11

100uF

J2

1

R7

20

J4

1

R5
DNP

C7

1nF

J11

1

2

3

R9

0

J1

1

C16

DNP

J3

1

C9

22uF

VOUT

SYNC

C14

22uF

VDD

C6

330uF/25V

J7

1

2

C8
2.2uF

R2
100k

PVIN

R6

100k

C10

100uF

SW5

SW SPDT

U1

ISL85014

SYNC

1

2

MO

DE

3

FRE

Q

PG

4

VD

D

5

BOOT

6

7

GND

9

PVIN

8

PHASE

FB

10

CO

MP

11

NC

12

NC1

13

EN

14

VIN

15

VIN

R1

200k

R4

100k

R3

DNP

C4

100n

C13

22uF

C1

DNP

EN

L1

0.68uH

C2
DNP

GND

J9

1

2

3

C5

1u

C3

DNP

J6

1

2

J10

1

2

3

C12

100uF

Содержание ISL85014EVAL1Z

Страница 1: ...equency synchronization option Jumper selectable mode DEM Forced CCM Jumper selectable OCP mode Hiccup Latch off Jumper selectable frequency 600kHz 300kHz Connectors and test points for easy probing Compact design Related Literature For a full list of related documents visit our website ISL85014 product pages Ordering Information PART NUMBER DESCRIPTION ISL85014EVAL1Z Evaluation board for ISL85014...

Страница 2: ...he load current to 0 1A and turn on the power supply The output voltage should be in regulation with a nominal 1 8V output 7 Slowly increase the load up to 14A while monitoring the output voltage which should remain in regulation with a nominal 1 8V output 8 Slowly sweep VIN from 4 5V to 18V The output voltage should remain in regulation with a nominal 1 8V output 9 Decrease the input voltage to 0...

Страница 3: ...he input capacitors and place them as close to the IC as possible 3 Place the VDD decoupling capacitor close to the IC between VDD and GND A 1µF ceramic capacitor is typically used 4 Place a bootstrap capacitor close to the IC between the BOOT and PHASE pins A 0 1µF ceramic capacitor is typically used 5 Connect the feedback resistor divider between the output capacitor positive terminal and AGND p...

Страница 4: ...G C11 100uF J2 1 R7 20 J4 1 R5 DNP C7 1nF J11 1 2 3 R9 0 J1 1 C16 DNP J3 1 C9 22uF VOUT SYNC C14 22uF VDD C6 330uF 25V J7 1 2 C8 2 2uF R2 100k PVIN R6 100k C10 100uF SW5 SW SPDT U1 ISL85014 SYNC 1 2 MODE 3 FREQ PG 4 VDD 5 BOOT 6 7 GND 9 PVIN 8 PHASE FB 10 COMP 11 NC 12 NC1 13 EN 14 VIN 15 VIN R1 200k R4 100k R3 DNP C4 100n C13 22uF C1 DNP EN L1 0 68uH C2 DNP GND J9 1 2 3 C5 1u C3 DNP J6 1 2 J10 1 ...

Страница 5: ...HITE ROHS 5002 KEYSTONE J9 J10 J11 3 CONN HEADER 1x3 BREAKAWY 1x36 2 54mm ROHS 68001 203HLF BERG FCI L1 1 COIL PWR CHOKE SMD 10x10x9 0mm 0 68µH 20 ROHS 7443330068 WURTH ELEKTRONIK R7 1 RES SMD 0402 20Ω 1 16W 1 TF ROHS ERJ2RKF20R0 PANASONIC R9 1 RES SMD 0402 0Ω 1 16W 5 TF ROHS CR0402 16W 00T VENKEL R2 R4 R6 3 RES SMD 0402 100k 1 16W 1 TF ROHS ERJ2RKF1003 PANASONIC R10 1 RES SMD 0402 200Ω 1 16W 1 TF...

Страница 6: ...User Guide 113 UG113 0 February 15 2017 Submit Document Feedback 6 ISL85014EVAL1Z PCB Layout FIGURE 4 TOP LAYER FIGURE 5 LAYER 2 FIGURE 6 LAYER 3 FIGURE 7 BOTTOM LAYER ...

Страница 7: ...February 15 2017 Submit Document Feedback Typical Performance Curves VIN 12V VOUT 1 8V L 0 68µH fSW 600kHz TA 25 C unless otherwise noted FIGURE 8 EFFICIENCY vs LOAD FIGURE 9 START UP WITH EN IOUT 14A FIGURE 10 LOAD TRANSIENT 0A 14A 0A 2 5A µs FIGURE 11 OUTPUT VOLTAGE RIPPLE IOUT 14A 30 40 50 60 70 80 90 100 0 2 4 6 8 10 12 14 OUTPUT CURRENT A VIN 12V fsw 600kHz DEM VIN 5V fsw 600kHz DEM EFFICIENC...

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