4
dc2066af
DEMO MANUAL DC2066A
Quick start proceDure
Connecting a PC to DC2066A
You can use a PC to reconfigure the power management
features of the LTM4677 such as: nominal V
OUT
, margin
set points, OV/UV limits, temperature fault limits, sequenc-
ing parameters, the fault log, fault responses, GPIOs and
other functionalities. The DC1613A dongle may be plugged
when V
IN
is present.
V
OUT0
V
OUT1
12-PIN (J1)
CONNECTOR
USB CABLE
V
IN
INPUT POWER
SUPPLY
LOAD0
LOAD 1
USB TO I
2
C/PMBus
DONGLE DC1613A
LTM4677 DEMO
BOARD DC2066A
LOAD CURRENT (A)
0.0
EFFICIENCY (%)
95
65
85
75
90
80
70
60
10.0
6.0
14.0
18.0
8.0
16.0
4.0
12.0
2.0
V
O
= 0.9V
V
O
= 1.0V
V
O
= 1.2V
V
O
= 1.5V
V
O
= 1.8V
V
IN
= 5V, f
S
= 500kHz, CCM
LOAD CURRENT (A)
0.0
EFFICIENCY (%)
95
65
85
75
90
80
70
60
10.0
6.0
14.0
18.0
8.0
16.0
4.0
12.0
2.0
V
O
= 0.9V
V
O
= 1.0V
V
O
= 1.2V
V
O
= 1.5V
V
O
= 1.8V
V
IN
= 12V, f
S
= 500kHz, CCM
Figure 4. Demo Setup with PC
Figure 5. Efficiency vs Load Current at V
IN
= 5V
Figure 6. Efficiency vs Load Current at V
IN
= 12V