Analog Devices LINEAR DC2620A-A Demo Manual page 2

DEMO MANUAL DC2620A-A
QUICK START PROCEDURE
Demonstration circuit 2620A-A makes it easy to use
the LTC7106 to adjust any conventional V
regulator and evaluate its performances. Refer to Figure 1
for the system setup and boards connection.
Connecting a PC and a Regulator to DC2620A-A
You can use a PC to reconfigure the power management
features of the LTC7106 such as: program IDAC cur-
rent, margin IDAC high/low, read back IDAC value and
check fault status. The DC1613A dongle may be plugged
in regardless of whether V
hot plugged.
DC2620A-A can adjust the output voltage of any V
erenced regulator. Use a twisted wire pair to connect the
IDAC and GND pins of DC2620A-A to V
of the regulator board.
USB CABLE
USB to
2
I C/PMBus Dongle
DC1613A
2
referenced
FB
is present. Dongle can be
IN
FB
and GND pins
FB
12-PIN
Demo Board
DC2620A-A
CONNECTOR
Figure 1. Demo Setup with PC
Follow the procedure below:
1. Make sure JP3 is in OFF position to disable the LTC7106
before turning on the regulator.
2. Turn on the regulator and check for the output voltage
as expected.
3. Once the proper output voltage is established on the
regulator, put JP3 to the ON position to enable the
LTC7106.
4. Open the LTpowerPlay software and adjust the IDAC
current value of the LTC7106 through it. Monitor the
regulator's output voltage as IDAC is changing. See
ref- LTpowerPlay Quick Start session for details
2.5V to 5.5V
Power Supply
(OPTIONAL)
V
IN
I
DAC
GND
V
FB
V Referenced
FB
Regulator
GND
DC2620A-A F01
dc2620aaf