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Application Note 1903

4

AN1903.1

March 11, 2014

ISL91108IIN-EVZ Evaluation Board Schematic

FIGURE 4. ISL91108IIN-EVZ EVALUATION BOARD SCHEMATIC

TABLE 6. ISL91108IIN-EVZ EVALUATION BOARD BILL OF MATERIALS

ITEM#

QTY

DESIGNATORS

PART TYPE

FOOTPRINT

DESCRIPTION

VENDORS

1

1

U1

ISL91108IINZ

W4x5.20

WLCSP

Intersil ISL91108 Buck-Boost Regulator with 
Fixed 3.3V Output Voltage

INTERSIL

2

1

L1

1µH

3.2mmx2.5mm Power Inductor DFE322512C, 4.6A, 34m

Ω

TOKO

3

1

C1

330µF

7343

Capacitor, Tantalum

ANY

4

2

C2, C3

10µF/16V/X5R

0603

Capacitor, Ceramic, GRM188R61C106MA73D

Murata

5

2

C4, C5

22µF/10V/X5R

0603

Capacitor, Ceramic, GRM188R61A226M

Murata

6

1

C6

DNP

0402

ANY

7

1

C7

0.1µF

0402

Capacitor, Generic

ANY

8

1

R1

0

Ω

0402

Resistor, Generic

ANY

9

1

R2

DNP

0402

ANY

10

2

R3, R4

1M

Ω, 5%

0603

Resistor, Generic

ANY

11

2

J1, J2

HDR-6

HDR-6

Vert. Pin Header, 6-Pin, 0.1” Spacing, Generic

ANY

12

2

J3, J4

HDR-3

HDR-3

Vert. Pin Header, 3-Pin, 0.1” Spacing, Generic

ANY

13

3

TP1, TP2, TP3

SCOPEPROBE

SCOPEPROBE

Test Point, Scope Probe 131-5031-00

TEKTRONIX

Содержание ISL91108IIA-EVZ

Страница 1: ...part of J1 and J2 headers The bench power supply can be connected to the PVIN and GND headers on J1 The electronic load can be connected to the VOUT and GND headers on J2 Measure the input and output currents Calculate efficiency based on these measurements 11 To test external sync remove the jumper at J4 then apply an external clock between 2 75MHz and 3 25MHz on the MODE input the center pin of ...

Страница 2: ...d output voltage as shown in Table 4 A precision resistor with 1 tolerance should be used FIGURE 1 ISL91108 START UP WITH VIN 2V and VOUT 3 3V LX1 2V DIV 2V DIV LX2 2V DIV VOUT 2V DIV EN VIN 2V VOUT 3 3V 400µs DIV IOUT 200mA FIGURE 2 ISL91108 START UP WITH VIN 4V and VOUT 3 3V LX1 2V DIV 2V DIV LX2 2V DIV VOUT 2V DIV EN VIN 4V VOUT 3 3V 400µs DIV IOUT 200mA TABLE 4 OUTPUT VOLTAGE PROGRAMMING DESIR...

Страница 3: ...Y 4 2 C2 C3 10µF 16V X5R 0603 Capacitor Ceramic GRM188R61C106MA73D Murata 5 2 C4 C5 22µF 10V X5R 0603 Capacitor Ceramic GRM188R61A226M Murata 6 1 C6 22pF 50V NP0 0402 Capacitor Generic ANY 7 1 C7 0 1µF 0402 Capacitor Generic ANY 8 1 R1 187kΩ 1 0402 Resistor Generic ANY 9 1 R2 60 4kΩ 1 0402 Resistor Generic ANY 10 2 R3 R4 1MΩ 5 0603 Resistor Generic ANY 11 2 J1 J2 HDR 6 HDR 6 Vert Pin Header 6 Pin ...

Страница 4: ...ower Inductor DFE322512C 4 6A 34mΩ TOKO 3 1 C1 330µF 7343 Capacitor Tantalum ANY 4 2 C2 C3 10µF 16V X5R 0603 Capacitor Ceramic GRM188R61C106MA73D Murata 5 2 C4 C5 22µF 10V X5R 0603 Capacitor Ceramic GRM188R61A226M Murata 6 1 C6 DNP 0402 ANY 7 1 C7 0 1µF 0402 Capacitor Generic ANY 8 1 R1 0Ω 0402 Resistor Generic ANY 9 1 R2 DNP 0402 ANY 10 2 R3 R4 1MΩ 5 0603 Resistor Generic ANY 11 2 J1 J2 HDR 6 HDR...

Страница 5: ...Application Note 1903 5 AN1903 1 March 11 2014 ISL91108 Evaluation Board Layout FIGURE 5 ISL91108 EVALUATION BOARD LAYOUT FIGURE 6 TOP LAYER ...

Страница 6: ...Application Note 1903 6 AN1903 1 March 11 2014 FIGURE 7 MID LAYER FIGURE 8 MID LAYER 2 ISL91108 Evaluation Board Layout Continued ...

Страница 7: ...tions at any time without notice Accordingly the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding For information regarding Intersil Corporation and its products see www intersil com AN1903 1 March 11 2014 FIGURE 9 BOTTOM LAYER ISL91108 Evaluation Board Layout Continued ...

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