X
X
R
R
P
P
7
7
7
7
4
4
0
0
E
E
V
V
B
B
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-
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H
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I
C
C
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r
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C
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D
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July 2013
Rev. 1.0.0
Exar Corporation
www.exar.com
48720 Kato Road, Fremont CA 94538, USA
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
GENERAL DESCRIPTION
The XRP7740EVB-HIC Demo board is a
complete, four channel, power system
measuring 3.25” x 5” capable of delivering
over 60 watts. It provides 1.5V, 1.0V 1.8V and
1.0V at a maximum of 8A, 30A, 5A and 12A
on channels 1 through 4 respectively. All
power supply operations can be controlled
over an I
2
C interface. The supplies can be
adjusted in 50mV increments for voltages up
to 2.5V and in 100mV increments for voltages
from 2.6V to 5.1V. The order and ramp rates
for each supply can be programmed to
accommodate any sequencing requirement.
Faults, output voltages and currents can also
be monitored. Four GPIOs are available and
can be programmed to provide status of power
good signals, faults, and warnings or as enable
inputs. Unused GPIO pins can be programmed
as I/O expansion for a microcontroller. The
board is supported by PowerArchitect
TM
4.21
and plugs directly onto the Exar Configuration
Module (XRP77XXEVB-XCM).
E
E
V
V
A
A
L
L
U
U
A
A
T
T
I
I
O
O
N
N
B
B
O
O
A
A
R
R
D
D
M
M
A
A
N
N
U
U
A
A
L
L
Figure 1: XRP7740EVB-HiC Demo Board
FEATURES
•
XRP7740 Programmable Controller
•
4 Channel Power System
•
Wide Input Voltage Range: 4.5V-20V
•
Over 60W Capable
•
Form Factor: 3.25” x 5”
•
Uses PowerArchitect
TM
4.21
•
I
2
C Interface
−
Programming
−
Monitoring
−
Control
