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Application Note 1903

5

AN1903.1

March 11, 2014

ISL91108 Evaluation Board Layout

FIGURE 5. ISL91108 EVALUATION BOARD LAYOUT

FIGURE 6. TOP LAYER

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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