EQ2320-7R POWER ONE, EQ2320-7R Datasheet - Page 16

• Manufacturer Part Number: EQ2320-7R
• Description: DC/DC Power Supply Dual-OUT 12V 9.2A 120W 15-Pin
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of EQ2320-7R

• Output Current: 9.2 A
• Output Voltage: 12 V
• Input Voltage: 65 to 150 V
• Number Of Outputs: 2
• Output Power: 120 W

BCD20011-G Rev AD, 22-Dec-09
Auxiliary Functions
Inhibit for Remote On/Off
Note: If this function is not used, the inhibit pin 28 must be
connected with pin 32 to enable the output(s). A non-
connected pin 28 will be interpreted by the internal logic as an
active inhibit signal and the output(s) will remain disabled (fail
safe function).
An inhibit input enables (logic low, pull down) or disables (logic
high, pull up) the output, if a logic signal, e.g. TTL, CMOS is
applied. In systems consisting of several converters, this
feature may be used, for example, to control the activation
sequence of the converters by means of logic signals, or to
allow the power source for a proper start-up, before full load is
applied.
Fig. 18
Definition of input and output parameters
Table 8: Output response times with outputs resistively loaded and R-input left open
Current Sharing
The current sharing facility should be used, where several
converters are operated in parallel or redundant connection.
This feature avoids that some converters are driven into
current limitation and thus produce excessive losses. As a
result, the stress of the converters is reduced, and the system
reliability is further improved.
Simple interconnection of the T pins causes the converters to
share the output current. The current tolerance of each
converter is approx. ±20% of the sum of its nominal output
currents I
In n+1 redundant systems, a failure of a single converter will
not lead to a system failure, if the outputs are decoupled by
diodes; see fig. 10.
Characteristics
t
t
V
r
f
* Models with version V104 or higher
i min
V
i
V
I
o1 nom
Output voltage rise time V
(indicative values)
Output voltage fall time
(indicative values)
inh
inh
I
i
28
30
32
26
+ I
i
Vi+
Vi–
o2 nom
.
®
Conditions
V
V
V
i nom
i inh
i nom
i inh
= 2.4 → 0.8 V
= 0.8 → 2.4 V
, R
, R
06091a
Vo+
Vo–
Vo+
Vo–
L
L
S+
S–
= V
= V
10
14
12
4
8
o nom
o nom
6
/I
/I
V
o nom
o nom
I
o
o
Page 16 of 26
The output response, when enabling and disabling the output
by the inhibit input, is shown in the following figure.
Fig. 19
Output response as a function of V
inhibit control
Since the T pins are referenced to the pins S –, the S– pins of
all converters must have the same electrical potential.
Double-output converters with both outputs connected in
series can also be paralleled with current sharing, if pins Vo1–
of all converters are connected together, see fig. 8c.
If the output voltages are programmed to a voltage other than
V
adjusted individually within a tolerance of ±1%.
Table 7: Inhibit characteristics
Characteristics
V
I
o nom
12 / 15 V
Note: T function only increases the output voltage, until the
currents are evenly shared. If in a redundant system, one
converter fails, the remaining converters keep sharing their
currents evenly.
Important: For applications using the hot plug-in capabilities,
dynamic output voltage changes during plug-in/plug-out must be
considered.
inh
inh
V
1.01
0.99
i min
V
3.3 V
0.1
2.4
0.8
24 V
0
V
by means of the R pin or option P, the outputs should be
o
Inhibit
voltage
Inhibit current
0
5 V
/V
inh
V
o nom
i
[V]
66 – 132 Watt DC-DC Converter
BQ
1.5
0.5
t
V
V
1
3
d on
o
o
= on
= off
t
r
48Q
3
3
V
T
V
V
V
Conditions
i min
C min
inh
inh
inh
= – 50 V
=
= 50 V
CQ
1.5
1.5
0.5
– V
1
– T
Q Series Data Sheet
0 V
i max
C max
i
GQ
1.5
0.8
(on/off switching) or
3
min
– 50
2.4
DQ*
1.5
www.power-one.com
3
1
– 500
t
+500
–40
f
typ
EQ*
0.5
1.5
2
3
max Unit
0.8
50
06159a
t
t
t
Unit
VDC
ms
μA