Renesas ISL9241EVAL1Z, User Manual

Page: 11 / 28

ISL9241EVAL1Z 3. Functional Description
UG184 Rev.3.00 Page 11 of 28
Aug.26.19
Note : Make sure the input current does not reach the input current limit value, especially for a small V
IN
input.
3.5 Configuring the ISL9241EVAL1Z for Trickle Charging Mode
1. Complete steps 1 through 5 in Configuring the ISL9142EVAL1Z for Charging Mode without any changes. Set
the MinSysVoltage register and the ChargeCurrentLimit register to non-zero values.
2. Decrease the battery emulator voltage and monitor the battery charging current. If the battery emulator voltage
is less than 5.2V (lower than MinSysVoltage ), the battery enters trickle Charging mode and the charge current
decreases to 0.26A. The trickle charge current value can be changed through the SMBus control registers (see
the
ISL9241 datasheet).
Note: Make sure the input current does not reach the input current limit value, especially for small V
IN
input.
3.6 Configuring the ISL9241EVAL1Z for OTG Mode
1. Set the battery emulator voltage at a constant value between 5.8V and 15V. Connect battery leads J
5
and J
6
with the output disabled.
2. Connect an electric load on supply leads J
1
and J
2
with the output disabled.
3. Connect the USB cable at the USB port for SMBus. Only LED1 is on. Turn on the battery emulator and electrical
load without adding any load.
4. Open the ISL9241 GUI. OTGVoltage is the voltage value for the load side, as shown in Figure 9 , and
OTGCurrent is the OTG output current limit at the load side. You can set these values as needed within the
output limit range. See the ISL9241 datasheet for the limit ranges.
5. Select the Control0 & 1 Registers tab.
6. In the Control1 Register column, select 1: Enable in OTG Function to enable OTG, then click Write . See
Figure 10 on page 12 .
Figure 9. OTGVoltage and OTGCurrent Settings in GUI