ISL8014AEVAL2Z Intersil, ISL8014AEVAL2Z Datasheet

ISL8014AEVAL2Z

Manufacturer Part Number

ISL8014AEVAL2Z

Description

EVAL BOARD 2 FOR ISL8014A

Manufacturer

Intersil

Datasheets

1.ISL8014EVAL2Z.pdf (6 pages)

2.ISL8014AIRZ-T.pdf (15 pages)

Specifications of ISL8014AEVAL2Z

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current page: 1 of 6
Download datasheet (255Kb)

ISL8014AEVAL2Z: 4A Low Quiescent Current 1MHz

High Efficiency Synchronous Buck Regulator

Description

The ISL8014AEVAL2Z kit is intended for use by

individuals with requirements for Point-of-Load

applications sourcing from 2.7V to 5.5V. The

ISL8014AEVAL2Z evaluation board demonstrates the

performance of the ISL8014A low quiescent current

mode converter.

The ISL8014A is offered in a 4mmx4mm 16 Ld QFN

package with 1mm maximum height. The ISL8014A is

pin-to-pin compatible to the ISL8013A. The complete

converter occupies less than 0.4in

Key Features

• High Efficiency Synchronous Buck Regulator with up

• Power-Good (PG) Output with 1ms Delay

• 2.7V to 5.5V Supply Voltage

• 3% Output Accuracy Over-Temperature/Load/Line

• 4A Guaranteed Output Current

• Start-up with Pre-biased Output

• Internal Digital Soft-Start - 1ms

• Soft-Stop Output Discharge During Disabled

• 35µA Quiescent Supply Current in PFM Mode

• Selectable Forced PWM Mode and PFM Mode

• External Synchronization up to 4MHz

• Less than 1µA Logic Controlled Shutdown Current

• 100% Maximum Duty Cycle for Lowest Dropout

• Internal Current Mode Compensation

• Peak Current Limiting and Hiccup Mode Short Circuit

• Over-Temperature Protection

Recommended Equipment

The following materials are recommended to perform

testing:

• 0V to 10V Power Supply with at least 5A Source

• Electronic Loads Capable of Sinking Current Up to 5A

• Digital Multimeters (DMMs)

• 100MHz Quad-trace Oscilloscope

• Signal Generator

December 16, 2009

AN1366.3

to 95% Efficiency

Protection

Current Capability or 5V Battery

area.

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

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

Application Note 1366

Quick Setup Guide

Evaluating the Other Output Voltage

The ISL8014AEVAL2Z kit output is preset to 1.8V;

however, output voltages can be adjusted from 0.8V to

3.3V using Equations 1 and 2:

Let’s set R

Note: If desired output is 0.8V, then short R

Mode Control

The ISL8014A has a SKIP pin that controls the operation

mode. When the SKIP pin is driven to low or shorted to

ground, the regulator operates in a PFM mode. Set SKIP

pin high forced PWM mode. The controller remains in the

fixed PWM frequency at light load instead of entering the

skip mode. In an application where situations require the

ISL8014A regulator to sink more than 2A valley inductor

current, it is recommended to operate in PFM to avoid

any possible over stress.

1. Ensure that the circuit is correctly connected to the

2. Connect the bias supply to VIN. Plus terminal to P4

3. Verify that position is ON for SW1.

4. Turn on the power supply.

5. Verify the output voltage is 1.8V for V

OUT

SW1

SW2

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

supply and loads prior to applying any power.

(VIN) and negative return to P5 (GND).

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

⎛

⎝

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

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

0.8

OUT

0.8 1

(

⎛

⎜

⎝

⎞

⎠

)

= 124kΩ

ENABLE

–

TABLE 1. SWITCH 1 SETTINGS

SKIP

PWM

------ -

OFF

PFM

⎞

⎟

⎠

Disable V

Enable V

Fixed PWM frequency at light load

Force continuous mode

ON/OFF CONTROL

OUT

FUNCTION

OUT

and open

(EQ. 1)

(EQ. 2)

Related parts for ISL8014AEVAL2Z

ISL8014AEVAL2Z Summary of contents

Page 1

... P5 (GND). 3. Verify that position is ON for SW1. 4. Turn on the power supply. 5. Verify the output voltage is 1.8V for V Evaluating the Other Output Voltage area. The ISL8014AEVAL2Z kit output is preset to 1.8V; however, output voltages can be adjusted from 0.8V to 3.3V using Equations 1 and 0.8 1 OUT Let’ ...

Page 2

... ISL8014AEVAL2Z Schematic 1 VIN 22µF 22µ OPEN VIN 2 R4 100k NOTE: Pins 13 and 16 are no connect pins which can tie to VIN, SGND, or LX. Recommend connecting pin for compatibility to ISL8013. 2 Application Note 1366 VIN PGND 11 2 R10 VIN PGND VDD ISL8014AIRZ SGND 4 9 SYNCH ...

Page 3

... ISL8014AEVAL2Z Bill of Materials REFERENCE PART NUMBER QTY DESIGNATOR ISL8014AEVAL2Z 1 H1045-00470-50V5-T 1 H1045-DNP 0 H1065-00226-6R3V10-T 4 C1, C2, C5, C6 CAP, SMD, 1206, 22µF, 6.3V, DR73-1R5-R 1 131-4353-00 2 J1, J2 1514-2 4 P4, P5, P7, P8 CONN-TURRET, TERMINAL POST, 5002 3 P2, P3, P6 LTST-C170CKT 1 ISL8014AIRZ 1 2N7002-7-F-T 1 H2511-00R00-1/10W-T 1 H2511-01003-1/10W1-T 4 R2, R4, R6, R7 RES, SMD, 0603, 100k, 1/10W, ...

Page 4

... ISL8014AEVAL2Z Board Layout 4 Application Note 1366 ISL8014AEVAL2Z FIGURE 1. TOP COMPONENTS FIGURE 2. TOP LAYER ETCH AN1366.3 December 16, 2009 ...

Page 5

... ISL8014AEVAL2Z Board Layout 5 Application Note 1366 (Continued) FIGURE 3. 2ND LAYER ETCH FIGURE 4. 3RD LAYER ETCH AN1366.3 December 16, 2009 ...

Page 6

... ISL8014AEVAL2Z Board Layout FIGURE 5. BOTTOM LAYER COMPONENTS (MIRRORS) 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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