2
AN1386.1
December 23, 2009
General Description
This app note covers the ISL8201MEVAL1Z,
ISL8204MEVAL1Z, ISL8206MEVAL1Z evaluation boards.
Since the modules are a pin for pin drop in with all
necessary unique circuitry integrated in the module, the
only difference in the BOM is the ISL8201M, ISL8206M,
or ISL8204M POL modules. We will refer to a generic
eval board, ISL820xMEVAL1Z to cover all three power
modules.
The ISL820xMEVAL1Z POL module evaluation board is
shown in Figure 1. The user can use it to evaluate the
performance of the Intersil ISL8201M, ISL8206M, or
ISL8204M POL modules. This board consists of power
and load connectors for source and load side, switches
for PVCC bias selection and On/Off option, and other
passive components.
The input voltage range is from 1V to 20V, and the
output voltage range is from 0.6V to 5V 5V for the
ISL8201M or 0.6V to 6V for the ISL8204M and
ISL8206M. Additional PVCC bias source is not required
when using an input voltage of 5V or 12V. It can
connect to the input side directly. However, in wider
input ranges, which are above 14V or below 5V, the
PVCC bias needs to add an external source, which
provides operation bias of the module. The output
voltage is initially set at 1.5V for typical evaluation. The
user can easily set the output voltage by changing the
value of R
1
(refer to Figure 8).
Installation
Recommended Operating Specification
The recommended operating specification for
input/output and PVCC bias range is shown as Table 2.
Table 3 lists the typical application’s various output
voltages and its corresponding resistance.
FIGURE 1. EVALUATION BOARD OF POL MODULE
TABLE 1. TEST EQUIPMENT LIST
EQUIPMENT PART NUMBER
An adjustable DC Power Supply 30V, 15A,
with current limit
GW GPC–3060D
An electronic load, capable of sinking 20A Chroma 63030/63010
Four channel oscilloscope and probes Tektronix TDS3014
Tektronix P3010
High Precision Digital Voltage Meter ESCORT 3136A
High Precision Digital Current Meter ESCORT 3136A
TABLE 2. RECOMMENDED OPERATING SPECIFICATIONS
PARAMETER
TEST
CONDITIONS MIN TYP MAX UNIT
Input Voltage
Range (V
IN
)
1-20V
Supply Voltage
Range (PVCC)
Fixed +5V
Supply
4.5 5.0 5.5 V
Fixed +12V
Supply
9.6 12.0 14.4 V
Wide Range
Supply
6.5 - 14.4 V
Output Voltage
Range (V
OUT
)
ISL8201M 0.6 - 5 V
ISL8204M and
ISL8206M
0.6 - 6 V
Current Setting for
V
OUT
R1 = 6.49kΩ -1.5- V
Output Current
(Load Current)
ISL8201M - - 10 A
ISL8206M - - 6 A
ISL8204M - - 4 A
Current Limit
(PVCC = 12V)
ISL8201M
R
SEN-IN
= 3.57kΩ
-17- A
ISL8206M
R
SEN-IN
= 4.12kΩ
-8.8- A
ISL8204M
R
SEN-IN
= 2.87kΩ
-6.6- A
TABLE 3. TYPICAL OUTPUT VOLTAGE SETTING FOR
EACH RESISTANCE
V
OUT
0.6V 1.05V 1.2V 1.5V 1.8V 2.5V 3.3V 5V
R
1
Open 13k 9.76k 6.49k 4.87k 3.09k 2.16k 1.33k
Application Note 1386
