Enpirion
®
Power Evaluation Board User Guide
EN6360QI PowerSoC
STEP 2:
Set the output voltage by putting a jumper in the desired positions for
connector header J5 as shown in Figure 3. If all jumper positions are
left open, then R
B
will be open, and V
OUT
will be 0.6V nominal. The
other positions will select the four possible R
B
resistors. Table 1 shows
the R
A
and all possible R
B
values, and the resulting V
OUT
for each
combination of R
A
and single R
B
. Please see Figures 1 and 5. It is
possible to use parallel combinations of the four R
B
resistors to get
other output voltages. Please note the R
A
, C
A
, and R
B
values for this
board have been optimized for an input voltage of around 6.2V using
the equations in Figure 1. The part will be stable for lower V
IN
values,
but to get optimum transient response, new R
A
, C
A
, and R
B
values
have to be calculated and installed.
Figure 3: Shows the voltage selection jumpers
Nominal output voltages, from left to right, are 1.2V, 2.41V, 1.80V,
and 1.02V. Jumper as shown, selects 1.80V output.
CAUTION
:
Except ENA, no other jumpers can be changed while the
EN6360QI is enabled. Doing so could result in damage to the part.
Always disable part when changing output voltage setting.
Reference Designator
Nominal Value
Nominal V
OUT
R3 (R
A
in Figure 1)
301k
Ω
0.6V with no R
B
R5 (R
B
in Figure 1)
301k
Ω
1.2V
R8 (R
B
in Figure 1)
100k
Ω
2.41V
R7 (R
B
in Figure 1)
150k
Ω
1.80V
R6 (R
B
in Figure 1)
430k
Ω
1.02V
Table 1 – V
OUT
resistor divider values, and the resulting output voltages if only
a single R
B
is used. You could use more than one R
B
and get other output
voltages. Please use the third equation in Figure 1, and solve for V
OUT
.
STEP 3:
Assuming parallel operation is not needed, leave the M/S jumper not
populated (floating).
STEP 4:
The SEL jumper controls the EN_PB pin. If left floating, this pin is
pulled high internally, and the device will support monotonic startup under pre-
biased load. To pull this pin low, put the jumper between the middle and right
pins just as shown in Figure 2 for the ENABLE pin.
Page 3 of 9
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