4
Rev. 0
QUICK START PROCEDURE
V
OUT
GND
C
OUT
Figure 3. Measuring Output Voltage Ripple
Figure 4. Demo setup with PC
Connecting a PC to DC2672A-A
You can use a PC to reconfigure the power manage-
ment features of the LTM4664 such as: nominal V
OUT
,
margin set points, OV/UV limits, temperature fault limits,
sequencing parameters, the fault log, fault responses,
GPIOs and other functionalities. The DC1613A dongle
may be plugged when V
IN
is present.
USB to I
2
C/PMBus
Dongle DC1613A
LTM4664 Demo
Board DC2672A-A
Input Power
Supply
USB Cable
VIN
12-PIN (J11)
Connector
Load0
Vout0
Vout1
Load1
LOAD CURRENT (A)
0
EFFICIENCY (%)
95
60
90
80
70
85
75
65
15
25
20
10
5
V
IN
= 30V
V
IN
= 48V
V
IN
= 58V
LOAD CURRENT (A)
0
EFFICIENCY (%)
95
60
90
80
70
85
75
65
15
25
20
10
5
V
IN
= 30V
V
IN
= 48V
V
IN
= 58V
Efficiency vs Load at V
OUT0
= 1.0V
Efficiency vs Load at V
OUT1
= 1.5V
Figure 5. Efficiency vs. Load Current on CH0 (CH1 is Disabled)
Figure 6. Efficiency vs. Load Current on CH1 (CH0 is Disabled)
