Intersil ISL6423B Manuel utilisateur

Application Note 1582

ISL6423B Quick Start Guide

1. Download and install the ISLUSBI2CKIT1Z

evaluation board GUI from

http://www.intersil.com/products/deviceinfo.asp?p

n=ISL6423B.

2. Attach one end of the USB cable to the

ISLUSBI2CKIT1Z board and the other side goes to

the computer.

3. Attach the 4-pin connector, which came with the

evaluation board, between the ISLUSB2I2CEVAL2Z

board and the ISL6423BEVAL2Z evaluation board

(see Figure 1).

4. Apply 12V to VIN and GND post.

5. In Windows Explorer go to

C:\Program Files\Intersil\LNB Controller Interface

and click on the “usb2i2c.exe”. The computer screen

should display the program as shown in Figure 2.

6. Under Device Select, choose ISL6423/6423B and it

should display as shown in Figure 3.

FIGURE 1.

FIGURE 2.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 |Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

October 27, 2010

AN1582.0

2October 27, 2010

AN1582.0

7. Jumpers JP1, JP2, and JP3 are inserted, whereas JP4

is open, which provides a logic high signal to the

SELVTOP pin for controlling the output voltage.

Consult the ISL6423, ISL6423B data sheets for

additional information.

8. Click on Open Device and the ‘USB Attach’ and ‘USB

Device Handle’ buttons in the top left should turn

green.

9. To enable the ISL6423, ISL6423B, toggle the EN bit

on System Register 4 to ‘1’, at which point the

evaluation board should read approximately 13.3V

between VLNB and GND post.

10.For additional programming features on the

ISL6423, ISL6423B evaluation board, please

consult the ISL6423, ISL6423B data sheets under

I2C register settings.

11.For accurate noise and tone measurement, please

insert the scope probe in the SP1 connector on the

evaluation board. Figure 4 shows the ISL6423,

ISL6423B tone at 500mA of resistive load current

from 12VIN when the output voltage is programmed

for 13.3V.

FIGURE 3.

Application Note 1582

Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications 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

October 27, 2010

AN1582.0

FIGURE 4.

Application Note 1582

4October 27, 2010

AN1582.0

Evaluation Board Schematic

TXT

+5.0/+3.3V

GND

SCL

VLNB

GND

SDA

GND

BZT52C5V6

TPC6002

1UF

0.047UF

1.5KE24CA

R14

C11

1UF

VIN

56UF

15UH

TP1

CMS06

TP2

100PF

100

1.62K

1500PF

R26

MMBT2222LT1

10K

1.62K

R25

100K

18.2

VIN

0.01UF

C26

NDS356AP

BZT52C5V6

CMS06

TDIN

CMS06

10K

R11

C27

0.01UF

JP6

P13

DNP

VLNB

TDOUT

100

SP1

10K10K

VCC5

D7 D4

JP2

C15

4.75K

R24

.1UF

C16

220UH

0.01UF

0.1UF

10UF

TP4

S1A

56UF

10UF

4.7UH

10UF

0.01UF

C13

DNP

R27

DNP

Q2A

R23A

Q2B

DNP

0.22UF

C14

R23B

NDS356AP

R12

EXTM

FLT

100K

R10

VCC5

JP1

VIN

R15

100K

SELVTOP

TP5

C12

C10

0.1UF

SELVTOP

0.10

TP3

475

ISL6423BERZ

JP3

100K

JP4

ADDR1

ADDR0

SELVTOP

P10

P11

P14

P12

47.5K

4.75K

SGND

TCAP SDA

SCL

TDOUT

ADDR0

VSW FLT

VCC

AGND

TXT

SELVTOP

CPVOUT

CPSWIN

CPSWOUT

SGND

EXTM

TDIN

ADDR1

BYPASS

GATE

PGND

EE EE

1X4

OUT

Application Note 1582

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