5
dc2641af
DEMO MANUAL DC2641A
EXTV
CC
BIAS SUPPLY
By default, the DC2641A EXTV
CC
turret is tied to the 12V
V
OUT
.
To power the EXTV
CC
from on-board bias supply:
1. Leave the JP7 OPEN. This step disconnects the EXTV
CC
from V
OUT
.
2. Keep the JP8 at the “ON” position. The on-board BIAS
supply output voltage is 12V.
Alternatively, EXTV
CC
can also be powered by an external
power supply:
1. Leave the JP7 OPEN.
2. Keep the JP8 at the “OFF” position.
3. Apply a DC voltage (<14V) between the EXTV
CC
and
GND turret, after the input voltage is established.
Ensure that EXTV
CC
≤ V
IN
.
60
65
70
75
80
85
90
95
100
0
1
2
3
4
5
6
7
8
9
10
Efficiency (%)
I
OUT
(A)
DC2641A F03
V
IN
= 100V
V
IN
= 72V
V
IN
= 48V
V
IN
= 16V
Figure 3. DC2641A V
OUT
Typical Efficiency vs Load Current