an1440

ISL92115.8EVAL1Z, ISL92116.8EVAL1Z
Evaluation Board Application Manual
®
Application Note
January 14, 2009
AN1440.1
Description
Key Features
The ISL92115.8/6.8EVAL1Z is an evaluation kit which is
used for evaluating Li-ion battery charger protection ICs.
This evaluation kit is designed to deliver up to 800mA charge
current to battery applications.
• A Complete Evaluation Platform for the ISL9211
Protection IC Evaluation
The ISL9211 protects the charging system from three circuit
failures, as follows.
1. Input overvoltage
• Input Accepts Voltage up to 24V
• Flexible Power Connectors Each with a Hook and a
Solder Pad Providing Variety to Users
• Test Points for Key Signal Measurement
• Pb-free (RoHS compliant)
2. Short circuit in charging system
3. Overcharged battery
What is Needed
When any of the three parameters exceeds its limit, the IC
turns off an internal N-Channel MOSFET to remove the
power from the charging system to the battery.
The ISL9211 has two input OVP options, which are 5.8V and
6.8V.
The following instruments will be needed to perform testing:
• Power Supplies:
- PS1: DC 30V/2A
- PS2: DC 10V/2A
Refer to the ISL9211 datasheet for more details:
http://www.intersil.com/data/fn/fn6658.pdf
• DC Electronic Load: 20V/2A
Pinout
• Oscilloscope
• Cables and Wires
ISL9211
(8 LD 2x2 µTDFN)
TOP VIEW
Ordering Information
VIN 1
8 OUT
GND 2
7 ILIM
NC 3
6 VB
FAULT 4
• Multimeters
PART NUMBER
DESCRIPTION
ISL92115.8EVAL1Z
Evaluation Board for ISL9211
ISL92116.8EVAL1Z
Evaluation Board for ISL9211
5 GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas Inc. 2008, 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Application Note 1440
Quick Setup Guide (Refer to Figure 1)
Overcurrent Protection
Step 11:
Turn on the E-load. Increase the current of the
load to 1A ±70mA reading on the current meter.
Step 12:
Voltmeter V2 reads 0V.
Step 13:
Turn off the E-load.
Step 14:
Voltmeter V2 reads 5V
DO NOT APPLY POWER UNTIL STEP 6
Step 1:
Set power supply PS1 to 5V and current limit to
2A, and connect it to VIN pin of the board.
Step 2:
Connect Voltmeter V1 across VIN to ground.
Step 3:
Set PS2 to 3.6V and the current limit to 0.2A.
Then connect the power supply to VBAT of the
board.
Battery Overvoltage Protection
Step 15:
Turn on PS2.
Step 16:
Increase the voltage of PS2 to 4.6V.
Step 4:
Connect E-load in series with a current meter to
OUT.
Step 17:
Voltmeter V2 reads 0V.
Step 5:
Connect Voltmeter V2 across OUT to ground.
Step 18:
Decrease the voltage of PS2 to 3.6V.
Step 6:
Turn on PS1. Voltmeter V1 should read 5V, and
Voltmeter V2 should read 5V.
Step 19:
Voltmeter V2 reads 5V.
Test Procedures
Input Overvoltage Protection
Step 7:
Increase PS1 to 5.8V ±200mV for 5.8V option IC
and to 6.8V ±200mV for 6.8V option IC.
Step 8:
Voltmeter V2 reads 0V
Step 9:
Decrease voltage of PS1 to 5V.
Step 10:
Voltmeter V2 reads 5V
E - LOAD
PS1
V1
-
+
+
-
V2
I1
PS2
-
+
ISL92115.8/6.8EVAL1Z
FIGURE 1. CONNECTION OF EQUIPMENT
2
AN1440.1
January 14, 2009
Application Note 1440
Board Design
BAT
R2
220k
VIN
U1
1
VIN
C1
1µF, 25V
R1
10k
2
3
VIN
OUT
GND
ILIM
NC
VB
4 FAULT
GND
OUT
8
OUT
ILIM
7
6
VB
5
C2
0.1µF, 25V
R3
24.9k
FAULT
ISL9211
FIGURE 2. SCHEMATIC
TABLE 1. ISL92115.8/6.8EVAL1Z BILL OF MATERIALS
ITEM
QTY
REFERENCE
1
1
C1
1µF, 25V
1206
PANASONIC
2
1
C2
1µF
805
PANASONIC
3
1
R1
10k
603
PANASONIC
4
1
R2
220k
603
PANASONIC
5
1
R3
24.9k
603
PANASONIC
6
3
VIN, BAT, OUT
Test point
Test point_red
5010
7
1
ILIM
Test point
Test point_yellow
5014
7
5
GND
Test point
Test point_black
5011
18
1
U1
ISL9211
Battery Protection IC
µTDFN 2x2
3
PART DESCRIPTION
FOOTPRINT
PART NUMBER
VENDER
KEYSTONE
INTERSIL
AN1440.1
January 14, 2009
Application Note 1440
PCB Layout
ISL92115.8/6.8EVAL1Z
FIGURE 1. SILK LAYER
FIGURE 2. TOP LAYER
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AN1440.1
January 14, 2009
Application Note 1440
PCB Layout (Continued)
FIGURE 3. BOTTOM LAYER
=
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
5
AN1440.1
January 14, 2009
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