ISL62391HIEVAL1Z Intersil, ISL62391HIEVAL1Z Datasheet

ISL62391HIEVAL1Z

Manufacturer Part Number

ISL62391HIEVAL1Z

Description

EVALUATION BOARD FOR ISL62391HI

Manufacturer

Intersil

Series

Robust Ripple Regulator™ (R³)r

Datasheets

1.ISL62391HRTZ.pdf (20 pages)

2.ISL62392HIEVAL1Z.pdf (13 pages)

Specifications of ISL62391HIEVAL1Z

Main Purpose

DC/DC, Step Down with LDO

Outputs And Type

3, Non-Isolated

Voltage - Output

1.05V, 1.5V, 3.3V

Current - Output

15A, 15A, 100mA

Voltage - Input

5.5 ~ 25V

Regulator Topology

Buck

Board Type

Fully Populated

Utilized Ic / Part

ISL62391

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Frequency - Switching

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Introduction

The ISL62391 and ISL62392 evaluation boards demonstrate

the performance of ISL62391 and ISL62392 triple-output

controllers. The ISL62391 and ISL62392 controllers include

two pulse-width modulation (PWM) controllers featured with

Intersil’s patented R

0.6V to 5.5V, and a linear regulator (LDO3) that generates a

fixed 3.3V output and can deliver up to 100mA.

The evaluation board includes two Enable switches, an LED

Power-Good indicator and various test points. Each

switching channel has an on-board dynamic load generator

for evaluating the transient-load response. There are four

different evaluation boards which provide flexible evaluation

options. Table 1 shows a brief description of the evaluation

boards.

What’s Inside

The Evaluation Board Kit contains the following materials:

• ISL6239xxxEVAL1Z Evaluation Board

• ISL62391, ISL62392 Datasheet

• ISL62391, ISL62392 Evaluation Board User Guide (this

What’s Needed

The following materials will be needed in order to perform

testing:

• Adjustable +25V, 30A Power Supply

• +12V, 100mA Power Supply

• Precision Digital Multimeter

• 3 Electronic Loads

• 4-Channel Oscilloscope

Enable Control

The evaluation board provides flexible control logic to enable

or disable the outputs, and to program the two PWM

channels’ start-up sequence. For start-up timing sequence,

please refer to the ISL62391, ISL62392 datasheet

waveforms. Table 2 is the Enable controller truth table.

ISL62391LOEVAL1Z

ISL62391HIEVAL1Z

ISL62392LOEVAL1Z

ISL62392HIEVAL1Z

EVALUATION BOARD

document)

TABLE 1. EVALUATION BOARD DESCRIPTION

technology, output adjustable from

CHANNEL-1

1.05V/15A

3.3V/8A

Application Note

CHANNEL-2

1.5V/15A

5V/8A

ISL62391, ISL62392 Triple-Output Evaluation

~10A

~20A

~10A

~20A

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

OCP

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

Resistor Current Sense Configuration

The evaluation board is pre-configured with inductor DCR

current sense. For more precise overcurrent protection, it

also provides the option of resistor current sense. Figure 1

shows the configuration for resistor current sense.

For Channel-1, the ISL62391 and ISL62392 monitor the

OCSET1 pin and the ISEN1 pin voltages. Once the OCSET1

pin voltage is higher than the ISEN1 pin voltage for more than

10µs, the ISL62391 and ISL62392 declare an overcurrent

fault. For a chosen overcurrent set point I

sense resistor R

by Equation 1:

Where:

Float

High

EN1

Low

OCSET

- R

- I

- R

10µA

overcurrent setpoint

OCP circuit

ISL62391

ISL62392

OCSET

SENSE

FIGURE 1. RESISTOR CURRENT SENSE CIRCUIT

PHASEx

OCSETx

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

is the output current threshold that will activate the

Float Both Channel outputs OFF simultaneously

Float Channel-2 enabled after Channel-1 is in regulation

EN2

High

for Channel-2)

Low

ISENx

July 31, 2008

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

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

is current sense resistor (R

(Ω) is the resistor used to program the

TABLE 2. ENABLE TRUTH TABLE

•

Both Channel outputs OFF simultaneously

Channel-1 OFF, Channel-2 ON

Channel-1 ON, Channel-2 OFF

Both Channel outputs ON simultaneously

Channel-1 enabled after Channel-2 is in regulation

10μA

SENSE

ROCSET

OCSET

, the value of R

Board User Guide

START-UP SEQUENCE

SENSE

RSENSE

OCSET

for Channel-1 and

and current

is determined

AN1397.0

(EQ. 1)

Related parts for ISL62391HIEVAL1Z

ISL62391HIEVAL1Z Summary of contents

Page 1

... Table 1 shows a brief description of the evaluation boards. TABLE 1. EVALUATION BOARD DESCRIPTION EVALUATION BOARD CHANNEL-1 ISL62391LOEVAL1Z 3.3V/8A ISL62391HIEVAL1Z 1.05V/15A ISL62392LOEVAL1Z 3.3V/8A ISL62392HIEVAL1Z 1.05V/15A What’s Inside The Evaluation Board Kit contains the following materials: • ...

Page 2

Take Channel example, once the value calculated, follow the following procedure to configure the resistor current sense circuit: Step 1: Open the “DCR SENSE” solder bridge and connect the “RESISTOR SENSE” solder bridge on the ...

Page 3

Test Set-up Figure 2 shows a typical test configuration. + 12V - 3 Application Note 1397 + VOUT2 - (0.6V~5.5V) LDO3 - + (3.3V VOUT1 (0.6V~5.5V) FIGURE 2. TYPICAL TEST CONFIGURATION + VIN (5.5V~25V) - PROBE AN1397.0 July ...

Page 4

ISL62391LOEVAL1Z, ISL62392LOEVAL1Z Evaluation Board Bill of Materials ISL62391LOEVAL1Z and ISL62392LOEVAL1Z evaluation boards use the same PCB and schematic, thus the same bill of materials except for the controller U1. REFERENCE NO DESIGNATOR QTY 1 C6, C25 2 0.022µF 2 C8, ...

Page 5

... Q6, Q7, Q8 No-pop 5 Application Note 1397 VOLTAGE/ TOL. VALUE POWER (%) MANUFACTURER VISHAY C&K KEYSTONE KEYSTONE TEKTRONIX FCI GRAYHILL INTERSIL INTERSIL 20 VISHAY GENERIC GENERIC SULLINS TBD TBD DESCRIPTION SUD50N03_07_TO252-SUD50N03-07, TO- 252AA GT11MSCKE_SMT-GT11MSCBE-T, GT13MSCKE TEST_POINT_THOLE-5002, MTP500x TEST_POINT_THOLE-1514-2,TP-150C100P SCOPE_PROBE_5P_CONN-131-5031-00, TEK131-5031-00 CONN2_DIP2-68000-236, CONN2 DIP_SW4_SPST_DIP-78B04S, DIP8-SW4 ISL62391HRTZ 4x4 TQFN ...

Page 6

... ISL62391HIEVAL1Z, ISL62392HIEVAL1Z Evaluation Board Bill of Materials The ISL62391HIEVAL1Z, ISL62392HIEVAL1Z evaluation boards use the same PCB and schematic as the ISL62391LOEVAL1Z, ISL62392LOEVAL1Z evaluation board but different bill of materials (BOM). The following table shows the BOM difference of ISL62391HIEVAL1Z, ISL62392HIEVAL1Z in comparison with ISL62391LOEVAL1Z, ISL62392LOEVAL1Z. REFERENCE NO ...

Page 7

ISL6239xxxEVAL1Z Evaluation Board Schematic +12V TP14 F R26 R27 48.7K 1K 2N7002 Q12 VOUT2 D2 R28 Q13 R29 200 1K U4 BAT54S VDD LO HB VSS SW1 E HIP2100 R32 R33 48.7K 1K 2N7002 Q10 VOUT1 ...

Page 8

ISL6239xxxEVAL1Z Evaluation Board Layout 8 Application Note 1397 FIGURE 3. TOP SILKSCREEN AN1397.0 July 31, 2008 ...

Page 9

ISL6239xxxEVAL1Z Evaluation Board Layout 9 Application Note 1397 (Continued) FIGURE 4. BOTTOM SILKSCREEN AN1397.0 July 31, 2008 ...

Page 10

ISL6239xxxEVAL1Z Evaluation Board Layout 10 Application Note 1397 (Continued) FIGURE 5. LAYER 1 AN1397.0 July 31, 2008 ...

Page 11

ISL6239xxxEVAL1Z Evaluation Board Layout 11 Application Note 1397 (Continued) FIGURE 6. LAYER 2 AN1397.0 July 31, 2008 ...

Page 12

ISL6239xxxEVAL1Z Evaluation Board Layout 12 Application Note 1397 (Continued) FIGURE 7. LAYER 3 AN1397.0 July 31, 2008 ...

Page 13

... ISL6239xxxEVAL1Z Evaluation 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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