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Application Note 1946

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TABLE 3. ISL78268EVAL1Z BUILD OF MATERIALS LIST

REFERENCE DESIGNATOR QTY UNITS

COMPONENT 

TYPE

VALUE RATING

ACCURACY

(%)

TYPE

SIZE

OTHER DESCRIPTION

MANUFACTURER

MANUFACTURER PART

ISL78268EVAL1Z REV. B

1

ea.

PCB

PWB-PCB, 
ISL78268EVAL1Z-REVB,
ROHS

IMAGINEERING INC ISL78268EVAL1ZREVBPCB

C15

1

ea.

Capacitor, 
Ceramic

1.0µF

16V

10

X7R

0603

SMD, ROHS

TDK

C1608X7R1C105K

C22

1

ea.

Capacitor, 
Ceramic

4.7µF

16V

10

X7R

0805

SMD, ROHS

MURATA

GRM21BR71C475KA73L

C13, C16, C24, C27

4

ea.

Capacitor, 
Ceramic

100pF

100V

5

C0G

0603

SMD, ROHS

PANASONIC

ECJ-1VC2A101J

C10, C11

2

ea.

Capacitor, 
Ceramic

100pF

50V

5

C0G

0603

SMD, ROHS

PANASONIC

ECJ-1VC1H101J

C20

1

ea.

Capacitor, 
Ceramic

1000pF 25V

10

X7R

0603

SMD, ROHS

AVX

08053C102KAT2A

C9

1

ea.

Capacitor, 
Ceramic

0.01µF

50V

10

X7R

0603

SMD, ROHS

MURATA

GRM39X7R103K050

C12

1

ea.

Capacitor, 
Ceramic

0.1µF

25V

10

X7R

0603

SMD, ROHS

MURATA

GRM39X7R104K025AD

C14, C25

2

ea.

Capacitor, 
Ceramic

220pF

50V

10

X7R

0603

SMD, ROHS

MURATA

GRM188R71H221KA01D

C19, C32

2

ea.

Capacitor, 
Ceramic

0.022µF 100V

10

X7R

0603

SMD, ROHS

VENKEL

C0603X7R101-223KNE

C21

1

ea.

Capacitor, 
Ceramic

0.22µF 16V

10

X7R

0603

SMD, ROHS

TDK

C1608X7R1C224K

C7, C17

2

ea.

Capacitor, 
Ceramic

6800pF 50V

10

X7R

0603

SMD, ROHS

AVX

06035C682KAT9A

C3, C8, C18

3

ea.

Capacitor, 
Ceramic

0.1µF

100V

10

X7R

0805

SMD, ROHS

TDK

C2012X7R2A104K

C5, C6

2

ea.

Capacitor, 
Ceramic

1.0µF

100V

10

X7R

1206

SMD, ROHS

VENKEL

C1206X7R101-105KNE

C26, C30, C31

3

ea.

Capacitor, 
Ceramic

10µF

16V

10

X5R

1206

SMD, ROHS

VENKEL

C1206X5R160-106KNE
(Pb-Free)

C4

0

ea.

Capacitor, 
Ceramic

not 
placed

0603

SMD, Not Placed, Place-Holder 
for type-3 compensation, ROHS

C23

0

ea.

Capacitor, 
Ceramic

not 
placed

0603

SMD, Not Placed, Place-Holder, 
ROHS

C28

1

ea.

Capacitor, 
Alum. Polymer

68µF

25V

20

Alum. 
Polymer

8x11.5

RADIAL, 24m

Ω

, ROHS

UNITED CHEMI-CON APS-250ELL680MHB5S

C1

1

ea.

Capacitor, 
Alum. 
Electrolytic

220µF

80V

20

Alum. 
Electrolyti
c

12.5x20

RADIAL, ROHS

UNITED CHEMI-CON EKZE800ELL221MK20S

Summary of Contents for ISL78268EVAL1Z

Page 1: ...itching clock source internal or external Low shutdown current IQ 10 A Selectable latch off or hiccup mode fault response Comprehensive fault protections Input and output overvoltage protection Cycle...

Page 2: ...for detail Also the clock can be synchronized with the external clock source by input square wave at FSYNC pin The external clock frequency range will be 50kHz to 1 1MHz The output voltage of ISL7826...

Page 3: ...k ISL78268EVAL1Z Evaluation Board FIGURE 2 TOP VIEW FIGURE 3 BOTTOM VIEW J12 GND VCC J20 PHASE GND J28 VIN EN J6 GND SS J11 IMON DE VCC J8 GND IMONDE J17 GND FSYNC J10 GND EN VIN J19 GND CLKOUT J5 GND...

Page 4: ...system All voltages in this table are relative to potential at GND J2 If J28 is shorted with a jumper short between Pin 2 and Pin 3 of J10 to enable the system automatically when VIN is applied J11 IM...

Page 5: ...mper pins Table 2 on page 6 shows the detailed jumper pin settings for different operation modes Three typical operation modes examples are shown as follows 1 Diode Emulation Mode Enabled Hiccup Mode...

Page 6: ...s in 1 1 Confirm the Input voltage output voltage load current operation mode and OC2 functionality etc When Latch off is triggered the device stops switching and keeps switching off until the EN or V...

Page 7: ...en Open Open J21 PVCC GND Open Open Open Open Open J22 ISEN2P GND Open Open Open Open Open J23 ISEN2N GND Open Open Open Open Open J24 VOUT GND Open Open Open Open Open J26 VOUT Positive Terminal of L...

Page 8: ...LATCH IMON DE FB DNP AON6246 AON6246 DNP OUT OUT OUT OUT 4 4 3 2 1 2 1 2 1 2 1 2 1 2 3 2 1 4 8 7 6 5 25 1 4 5 6 13 14 15 16 17 18 3 2 1 2 1 2 1 2 5 6 7 8 1 2 3 4 VIN ISEN1N ISEN1P ISEN2N ISEN2P VCC CL...

Page 9: ...F 25V 10 X7R 0603 SMD ROHS MURATA GRM39X7R104K025AD C14 C25 2 ea Capacitor Ceramic 220pF 50V 10 X7R 0603 SMD ROHS MURATA GRM188R71H221KA01D C19 C32 2 ea Capacitor Ceramic 0 022 F 100V 10 X7R 0603 SMD...

Page 10: ...Thick Film 0603 SMD ROHS PANASONIC ERJ 3EKF1303V R1 1 ea Resistor 182k 1 10W 1 Thick Film 0603 SMD ROHS YAGEO RC0603FR 07182KL R8 R15 R24 R28 4 ea Resistor 243 1 10W 1 Thick Film 0603 SMD ROHS YAGEO...

Page 11: ...OHS BERG FCI 69190 202HLF Four corners 4 ea Screw 4 40x1 4in PAN SS PHILLIPS Four corners 4 ea Standoff 4 40x3 4in F F HEX ALUMINUM ROHS KEYSTONE 2204 250 OD AFFIX TO BACK OF PCB 1 ea Label LABEL DATE...

Page 12: ...ote 1946 12 AN1946 0 July 7 2014 Submit Document Feedback Layout Pattern 4 layers FIGURE 5 SILK PATTERN TOP FIGURE 6 TOP LAYER FIGURE 7 LAYER 2 FIGURE 8 LAYER 3 FIGURE 9 BOTTOM LAYER FIGURE 10 SILK PA...

Page 13: ...RE 15 FORCED PWM MODE VIN 36V VOUT 12V IOUT 2 5A L 4 7 H COUT 98 F fSW 300kHz FIGURE 16 FORCED PWM MODE VIN 36V VOUT 12V IOUT 1 0A L 4 7 H COUT 98 F fSW 300kHz 50 55 60 65 70 75 80 85 90 95 100 0 1 2...

Page 14: ...36V VOUT 12V IOUT 0A L 4 7 H COUT 98 F fSW 300kHz FIGURE 21 TRANSIENT RESPONSE DE MODE VIN 36V VOUT 12V IOUT 0 1A TO 4 5A L 4 7 H COUT 98 F FIGURE 22 TRANSIENT RESPONSE FORCED PWM MODE VIN 36V VOUT 1...

Page 15: ...ormation regarding Intersil Corporation and its products see www intersil com AN1946 0 July 7 2014 Submit Document Feedback FIGURE 23 HICCUP ACL VIN 30V VOUT 12V RIMON 156k FIGURE 24 AVERAGE CONSTANT...

Page 16: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Intersil ISL78268EVAL1Z...

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