USER’S MANUAL
ISL9113ERxZ-EVZ
Evaluation Board
AN1816
Rev 1.00
Oct 26, 2016
Description
The
ISL9113
provides a power supply solution for devices
powered by 3-cell alkaline, NiCd, NiMH, or 1-cell
Li-Ion/Li-Polymer batteries. It uses Intersil’s proprietary boost
algorithm to maintain voltage regulation when the input
voltage is very low.
Key Features
• Small, compact design
• Jumper selectable EN (enabled/disabled)
• On-board LED fault indication (for ISL9113ER7Z-EVZ)
• Connectors, test points, and jumpers for easy probing
Specifications
The boards are designed to operate at the following operating
conditions:
• Input voltage rating from 0.8V to 4.7V
• Fixed 5V nominal output voltage on the ISL9113ER7Z-EVZ
• Adjustable output voltage on the ISL9113ERAZ-EVZ
• Up to 500mA output current (V
BAT
= 3V, V
OUT
= 5V)
• 1.8MHz switching frequency
• Operating temperature range: -20°C to +85°C
Related Literature
• For a full list of related documents please visit our website
-
ISL9113
product page
Ordering Information
PART NUMBER
ISL9113ER7Z-EVZ
ISL9113ERAZ-EVZ
DESCRIPTION
Evaluation Board for ISL9113ER7Z
Evaluation Board for ISL9113ERAZ
ISL9113ERAZ
V
IN
GND
SW
VBAT
VOUT
V
OUT
GND
FB
EN
AGND
PGND
FIGURE 1. ISL9113ERAZ-EVZ BLOCK DIAGRAM
AN1816 Rev 1.00
Oct 26, 2016
Page 1 of 8
ISL9113ERxZ-EVZ
Functional Description
The ISL9113ERAZ-EVZ and ISL9113ER7Z-EVZ provide simple
platforms to evaluate the features of the ISL9113 boost
regulator. The ISL9113ER7Z-EVZ is for the fixed 5V output
ISL9113ER7Z IC and the ISL9113ERAZ-EVZ is for the adjustable
output ISL9113ERAZ IC. The evaluation boards have been
functionally optimized for best performance of the ISL9113 IC
series. Input power and load connections are provided through
multiple pin connectors for high current operations.
The evaluation board image is shown in
Figures 3
and
4
on
page 3.
The same PCB is used for both ISL9113ERAZ-EVZ and
ISL9113ER7Z-EVZ boards with different BOM’s. The board’s
enable function is controlled by the on-board jumper header J2.
The schematic for the ISL9113ERAZ-EVZ is shown on
Figure 5
on page 4
and ISL9113ER7-EVZ is shown in
Figure 6 on page 4.
The PCB layout images for all layers are shown in
Figures 7
and
8
on
page 6.
The bill of materials of the ISL9113ERAZ-EVZ and
ISL9113ER7Z-EVZ are shown in
Tables 1
and
2
on
page 5.
Additional Step for ISL9113ER7Z-EVZ Setup
1. Follow Steps 1 through 8 for the ISL9113ERAZ-EVZ setup.
2. Create a fault condition as described in “FAULT DETECTION
AND RESPONSE” table of the
ISL9113
datasheet. The LED
should be ON when a fault condition occurs.
V
BAT
= 3.0V, V
OUT
= 5.0V, I
LOAD
= 50mA
EN (5V/DIV)
V
OUT
(2V/DIV)
INDUCTOR CURRENT (500mA/DIV)
SW (5V/DIV)
Operating Range
The V
IN
range of the boards is 0.8V to 4.7V. The I
OUT
range of the
boards is 0 to 500mA. The operating ambient temperature range
is -20°C to +85°C.
TIME 40ms/DIV
FIGURE 2. START-UP WITH V
IN
= 3V AND V
OUT
= 5V, 50mA LOAD
Recommended PCB Layout
Correct PCB layout is critical for proper operation of the ISL9113.
The input and output capacitors should be positioned as closely
to the IC as possible. The ground connections of the input and
output capacitors should be kept as short as possible, and
should be on the component layer to avoid problems that are
caused by high switching currents flowing through PCB vias.
Quick Start Guide
Refer to the following Quick Setup Guide to configure and
power-up the board for proper operation. During the power-on
process, the expected waveforms are shown in
Figure 2.
Setup ISL9113ERA-EVZ
1. Install jumper on J2, shorting EN to VIN.
2. Connect a power supply to J1, with voltage setting between
0.8V and 4.7V.
3. Connect electronic load to J3.
4. Place scope probes on VOUT test point and other test points
of interest.
5. Turn on the power supply.
6. Monitor the output voltage start-up sequence on the scope.
The waveforms will look similar to that shown in
Figure 2.
7. Turn on the electronic load.
8. Measure the output voltage with the voltmeter. The voltage
should regulate within datasheet specification limits.
AN1816 Rev 1.00
Oct 26, 2016
Page 2 of 8
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