ISL9107EVAL1Z Intersil, ISL9107EVAL1Z Datasheet

ISL9107EVAL1Z

Manufacturer Part Number

ISL9107EVAL1Z

Description

Power Management IC Development Tools ISL9107 EVALUATION BOARD 1 - RoHS COMPLIANT - DFN

Manufacturer

Intersil

Type

DC/DC Converters, Regulators & Controllersr

Datasheet

1.ISL9107EVAL1Z.pdf (3 pages)

Specifications of ISL9107EVAL1Z

Rohs

yes

Product

Evaluation Kits

Tool Is For Evaluation Of

ISL9107

Input Voltage

2.7 V to 5.5 V

Output Voltage

1.6 V

For Use With

ISL9107

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Description

The ISL9107EVAL1Z and ISL9108EVAL1Z provide the

complete evaluation kit for the ISL9107 and ISL9108, which

are1.6MHz switching frequency, low quiescent current, high

efficiency integrated step-down regulators. They are capable of

delivering up to 1.5A output current with an output voltage

range from 0.8V to ~V

voltage divider resistors of R

output voltage is set to be 1.6V on the evaluation board. In

addition to ISL9108, ISL9107 offers a typical 215ms

Power-Good (PG) timer when powered up. This timer output

can be reset by RSI.

The complete ISL9107, ISL9108 regulator is located at the

center of the board. On the left side of the board are the

connectors for the input power source (V

output connectors are located on the right side (V

The other two test points are for the PG and RSI signals

respectively (for ISL9107 only), as labelled on the board. The

RSI input needs either be driven to a low or a high logic input

(Please refer to the ISL9107, ISL9108 datasheet, FN6612, for

more details regarding the RSI function). On the board, the

open-drain PG signal is pulled up to the V

resistor (R

the IC. Jumper JP2 is the mode selection input. Do not leave

the EN and the MODE signal floating. The evaluation board

also offers one oscilloscope probe tip connector connected to

SW pin to minimize the switching noise during the evaluation.

The evaluation board schematic, layout and bill-of-materials

(BOM) can be found at the end of this application note.

Ordering Information

• ISL9107EVAL1Z - Evaluation Board for ISL9107

• ISL9108EVAL1Z - Evaluation Board for ISL9108

Features

• A Complete Evaluation Platform for ISL9107and ISL9108

• Convenient Jumpers for Enable/Disable, Operation Mode

• Integrated Synchronous Buck Regulator with High

• 2.7V to 5.5V Supply Voltage

• 1.5A Output Current

• 17µA Quiescent Current in Skip (Low I

Selection

Efficiency

). Jumper JP1 allows the user to enable or disable

. The output voltage is set by two

and R

on the board. The default

Application Note

and GND). The

through a 100kΩ

) Mode

ISL9107EVAL1Z, ISL9108EVAL1Z Evaluation

and GND).

1-888-INTERSIL or 1-888-468-3774

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

Specifications

Table 1 below shows the recommended operating conditions

for using ISL9107EVAL1Z, ISL9108EVAL1Z.

NOTE: The output voltage can be set to other values by changing

the R

ISL9108 datasheet for some recommended R

different output voltages.

Recommended Equipment

The following instruments are recommended for testing:

• DC Power Supply, 5V/3A

• Electronic loads capable of sinking current up to 4A

• Multimeters

• Function generator

• Oscilloscope

Evaluation Board Setup

The following are recommended steps for setting up the

ISL9107EVAL1Z and ISL9108EVAL1Z evaluation boards:

Input Voltage

Output Voltage (Note)

Maximum Output Current

1. Connect Jumper JP1 at the position of “Enable” to enable

2. Connect Jumper JP2 either at the position of “SKIP” or

3. For ISL9107EVAL1Z, connect the RSI input to either

4. Connect DC power supply between VIN and GND

5. Connect the output to a load (resistor or electronic load).

6. Turn on the input power supply and start the evaluation.

the device. Connect JP1 at the position of “Disable“ to

disable the device.

“PWM”. With JP2 connected at the position of “SKIP”, the

device enters skip mode under light load condition; with

JP2 connected at the position of “PWM”, the device

always operates under PWM mode regardless of the load

condition.

ground or V

datasheet, FN6612, for more details regarding the

function of RSI.

connectors on board. Make sure the power supply has

enough supply current capability. The absolute maximum

rating for V

maximum input voltage applied on V

TABLE 1. RECOMMENDED OPERATING CONDITIONS

PARAMETER

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

Board Application Manual

July 29, 2008

values, V

Intersil (and design) is a registered trademark of Intersil Americas Inc.

pin is 6.5V and the recommended

. Please refer to the ISL9107, ISL9108

OUT

= 0.8V*(1+R

MIN

2.7

1.5

). Refer to ISL9107,

TYP

1.6

, R

is up to 5.5V.

and C

MAX

AN1399.0

5.5

values for

UNIT

Related parts for ISL9107EVAL1Z

ISL9107EVAL1Z Summary of contents

Page 1

... JP2 connected at the position of “PWM”, the device always operates under PWM mode regardless of the load condition. 3. For ISL9107EVAL1Z, connect the RSI input to either ground or V datasheet, FN6612, for more details regarding the function of RSI. ...

Page 2

... EN GND 10µF/6. MODE RSI ISL9107/ISL9108 2 JP2 J3, J6, JP3 AND JP4 ARE ONLY POPULATED FOR ISL9107EVAL1Z. FOR ISL9108EVAL1Z, THESE SHOULD BE UN-POPULATED ON THE BOARD. PCB PART DESCRIPTION FOOTPRINT 8 Ld (2x3) DFN 0805 0805 0603 0603 3.8x3 ...

Page 3

... CALL 1-888-INTERSIL FIGURE 2. SILK LAYER 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 ...

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