For I M04C series
o implement Trim-up by using an external resistor, R
trim-up
must be connected between the
d. For IPM04C0A0R06A, Please refer to the IPMR table for the desired
9
P
T
TRIM pin and groun
Vout. The value of R
trim-up
can be calculated by the following equation and the datasheet can
also be referred for further information.
Ω
−
−
k
out
V
up
trim
187
.
0
9
.
0
0
.
7
To implement Trim-down by using an external resistor, R
trim-down
must be connected between
e TRIM pin and Vout. For IPM04C0A0R06A, Please refer to the IPMR table for the desired
=
−
R
th
Vout. The value of R
trim-down
can be calculated by the following equation and the datasheet
can also be referred for further information.
Ω
−
−
−
k
out
V
down
trim
187
.
10
9
.
0
0
.
2
IPMR:
Rtrim values versus some commonly used Vout for IPM04C0A0R06A
.
=
R
Vout Rtrim
(
Ω
)
0.8 9.813K
0.9 Open
1.2 23.146K
1.5 1
1.479K
1.8 7.590K
2.5 4.188K
3.3 2.729K
Test
1)
T
urn on the fan.
just the input voltage while monitoring DMM2 and with output load set to the desired
2) Ad
operating point.
3) Set the enable switch SW1 to the “OFF” position to enable converter.
4) Use SW3, SW4 and SW5 (refer to Item 7.1_7) for Trim setup.
5) Note the voltage by observing DMM3.
6) Test the Load Regulation (refer to Item 8.2.2).
