ISL62391LOEVAL1Z Intersil, ISL62391LOEVAL1Z Datasheet

no-image

ISL62391LOEVAL1Z

Manufacturer Part Number
ISL62391LOEVAL1Z
Description
EVALUATION BOARD FOR ISL62391LO
Manufacturer
Intersil
Series
Robust Ripple Regulator™ (R³)r
Datasheets

Specifications of ISL62391LOEVAL1Z

Main Purpose
DC/DC, Step Down with LDO
Outputs And Type
3, Non-Isolated
Voltage - Output
3.3V, 5V, 3.3V
Current - Output
8A, 8A, 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
-
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
3
technology, output adjustable from
CHANNEL-1
1.05V/15A
1.05V/15A
®
3.3V/8A
3.3V/8A
1
Application Note
CHANNEL-2
1.5V/15A
1.5V/15A
5V/8A
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:
R
Float
Float
Float
High
High
High
EN1
Low
Low
Low
OCSET
- R
- I
- R
10µA
overcurrent setpoint
OCP circuit
R
ISL62391
ISL62392
OC
OCSET
SENSE
25
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 Both Channel outputs OFF simultaneously
Float Channel-2 enabled after Channel-1 is in regulation
EN2
High
High
High
for Channel-2)
Low
Low
Low
ISENx
=
July 31, 2008
|
I
------------------------------------ -
Intersil (and design) is a registered trademark of Intersil Americas Inc.
OC
is current sense resistor (R
(Ω) is the resistor used to program the
TABLE 2. ENABLE TRUTH TABLE
Both Channel outputs OFF simultaneously
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
R
SENSE
_
V
R
Copyright Intersil Americas Inc. 2008. All Rights Reserved
ROCSET
OCSET
, the value of R
Board User Guide
+
START-UP SEQUENCE
L
+
R
V
R
SENSE
RSENSE
OCSET
O
OC
3
for Channel-1 and
_
and current
I
is determined
L
AN1397.0
V
O
(EQ. 1)
C
O

Related parts for ISL62391LOEVAL1Z

ISL62391LOEVAL1Z Summary of contents

Page 1

... There are four different evaluation boards which provide flexible evaluation options. 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’ ...

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 0.022µ 0.01µF 3 C17, C19 2 0.22µF 4 C13, C15, C22, C23 4 10µ ...

Page 5

... 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. (Continued) REFERENCE NO DESIGNATOR QTY 35 Q11, Q13 2 SUD50N03-07 36 SW1, SW2 2 GT11MSCBE-T 37 TP5, TP6, TP7, TP8, 9 5002 ...

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

... VBAT Q5 Q9 OPEN IRF7832 TP6 VOUT1 TP7 0 PHASE1 EN1 EN2 VCC TP13 TP8 LDO3EN TP9 TP10 78B04S J4 FCCM 2 1 TITLE: ISL62391LOEVAL1Z ENGINEER: STEVE LAUR DRAWN BY DATE APPR VOUT2 TP11 TP12 D VOUT2 C PHASE2 VBAT TP3 B TP4 A REV: REV A DATE: 05/14/08 SHEET ...

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 ...

Related keywords