ISL8024EVAL3Z Intersil, ISL8024EVAL3Z Datasheet

ISL8024EVAL3Z

Manufacturer Part Number

ISL8024EVAL3Z

Description

Power Management IC Development Tools ISL8024 EVALUATION BOARD 3 - 16 LD TQFN - RoHS COMPLIANT

Manufacturer

Intersil

Type

DC/DC Converters, Regulators & Controllersr

Datasheet

1.ISL8024EVAL3Z.pdf (10 pages)

Specifications of ISL8024EVAL3Z

Rohs

yes

Product

Evaluation Boards

Tool Is For Evaluation Of

ISL8024

Input Voltage

2.7 V to 5.5 V

For Use With

ISL8024

Current page: 1 of 10
Download datasheet (323Kb)

3A/4A Low Quiescent Current High Efficiency

Synchronous Buck Regulator

Description

The ISL8023_24EVAL3Z kit is intended for use by individuals with

requirements for Point-of-Load applications sourcing from 2.7V to

5.5V. The ISL8023_24EVAL3Z simple smallest factor evaluation

board is used for a quick and easy demonstration of the

performance of the ISL8023, ISL8024 low quiescent high

efficiency synchronous buck regulator.

The ISL8023 and ISL8024 are offered in a 3mmx3mm

16 Ld TQFN package with 1mm maximum height. The

complete area that the converter occupies can be as small as

0.22in

Key Features

• High Efficiency Synchronous Buck Regulator with up to 95%

• 0.8% Reference Accuracy Over-Temperature/Load/Line

• Start-up with Pre-Biased Output

• Internal Soft-Start - 1ms or Adjustable

• Soft-Stop Output Discharge During Disabled

• Adjustable Frequency from 500kHz to 4MHz - Default at 1MHz

• External Synchronization up to 4MHz

• Negative OC protection

Recommended Equipment

The following materials are recommended to perform testing:

• 0V to 10V Power Supply with at least 10A source current

• Electronic Loads capable of sinking current up to 7A

• Digital Multimeters (DMMs)

• 100MHz quad-trace oscilloscope

• Signal generator

May 16, 2012

AN1759.0

Efficiency

capability or 5V battery

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 trademark owned by Intersil Corporation or one of its subsidiaries.

Quick Setup Guide

Evaluating the Other Output Voltage

The ISL8023_24EVAL3Z kit output is preset to 1.8V for VO,

however, output voltages can be adjusted from 0.6V to 5V. The

output voltage programming resistor, R

desired output voltage of the regulator. The value for the

feedback resistor is typically between 0Ω and 200kΩ, as

shown in Equation 1.

If the output voltage desired is 0.6V, then R

unpopulated and R

performance, add 10pF to 47pF in parallel to R

plot to insure optimum performance.

Frequency Control

ISL8023, ISL8024 has an FS pin that controls the frequency of

operation. Programmable frequency allows for optimization

between efficiency and external component size. Default

switching frequency is 2MHz when FS is tied to V

and R

frequency could be changed from 1MHz (R

When using R

sets external compensation mode. Please refer to the

ISL8023, ISL8024 datasheet (FN7812) for more details.

1. Ensure that the circuit is correctly connected to the supply

2. Connect the bias supply to V

3. Connect the output load to VO, the plus terminal to VO, P7

4. Verify that the position is PWM for SW2.

5. Verify that the position is ON for SW1.

6. Turn on the power supply.

7. Verify the output voltage is 1.8V for VO.

[

and loads prior to applying any power.

and the negative return to PGND, P5.

and the negative return to PGND, P8.

kΩ

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

= 40k) according to Equation 2:

]

is open). By connecting R

⎛

⎝

----------------------- -

VO VFB

----------------------------- - 14

OSC

220 10

VFB

–

[

⋅

kHz

to adjust the operational frequency, this also

⎞

⎠

is shorted. For faster response

]

–

Application Note 1759

, the plus terminal to V

to GND, the switching

, will depend on the

is left

= 206k) to 4MHz

Author: Jun Xiao

. Check bode

(EQ. 2)

(EQ. 1)

= 0

, P4

Related parts for ISL8024EVAL3Z

ISL8024EVAL3Z Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Copyright Intersil Americas Inc. 2012. All Rights Reserved Intersil (and design trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. Author: Jun Xiao , the plus terminal to V ...

Page 2

Soft-start Control Short CSS to SGND for internal soft-start (approximately 1ms). Populate CSS to adjust the soft-start time. This capacitor, along with an internal 1.6µA current source, sets the soft-start interval of the converter CSS μF [ ...

Page 3

ISL8023_24EVAL3Z Schematic P4 VIN R10 22UF 22UF OPEN R11 DNP VIN 200K 2N7002 Application Note 1759 ...

Page 4

... MURATA GRM31CR60J226KE19L COOPER DR73-1R0-R ELECTRONIC TECH. TEKTRONIX 131-4353-00 1514-2 KEYSTONE 5002 LITEON/VISHAY LTST-C170CKT INTERSIL ISL8023/24IRZ DIODES, INC. 2N7002-7-F PANASONIC ERJ-3EKF20R0V VENKEL CR0603-10W-000T VENKEL CR0603-10W-1003FT VENKEL CR-0603-10W-1913FT VENKEL CR0603-10W-2003FT ITT GT11MSCBE INDUSTRIES/C&K DIVISION INTERSIL 212403-013 INTERSIL LABEL-SERIAL NUMBER AN1759.0 May 16, 2012 ...

Page 5

ISL8023_24EVAL3Z Board Layout 5 Application Note 1759 FIGURE 1. TOP LAYER COMPONENTS ISL8023_24EVAL3Z AN1759.0 May 16, 2012 ...

Page 6

ISL8023_24EVAL3Z Board Layout 6 Application Note 1759 (Continued) FIGURE 2. TOP LAYER ETCH AN1759.0 May 16, 2012 ...

Page 7

ISL8023_24EVAL3Z Board Layout 7 Application Note 1759 (Continued) FIGURE 3. SECOND LAYER ETCH AN1759.0 May 16, 2012 ...

Page 8

ISL8023_24EVAL3Z Board Layout 8 Application Note 1759 (Continued) FIGURE 4. THIRD LAYER ETCH AN1759.0 May 16, 2012 ...

Page 9

ISL8023_24EVAL3Z Board Layout 9 Application Note 1759 (Continued) FIGURE 5. BOTTOM LAYER ETCH AN1759.0 May 16, 2012 ...

Page 10

... ISL8023_24EVAL3Z Board Layout 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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