Q2D25ZGD-N7C3
| Model | Q2D25ZGD-N7C3 |
| Description | DC-DC Regulated Power Supply Module, 2 Output, Hybrid |
| PDF file | Total 14 pages (File size: 248K) |
| Chip Manufacturer | BEL |
Q2D Series – Quarter-Brick DC/DC Converter
48V Input
Dual Output
Models using the trim configuration shown in
figure 13A include: Q2D25ZGE, Q2D25ZGB,
Q2D30ZED.
Vin (+)
Data Sheet
Trim Resistor
(Vout Increase)
? [%]
1
2
3
4
5
6
7
8
9
10
Trim Resistor
(Vout Decrease)
? [%]
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
R
T-INCR
[kO]
46.4
20.5
12.1
8.06
5.23
3.57
2.21
1.30
0.604
0
R
T-DECR
[kO]
57.6
25.5
14.0
8.87
5.90
3.83
2.32
1.30
0.432
0
Q
Series
Converter
(Top View)
TM
Vout2 (+)
TRIM
RTN
Rload1
Rload2
R
T-DECR
Vin
ON/OFF
Vin (-)
Vout1 (+)
Fig. 13B. Configuration for decreasing output
voltage
To decrease the output voltage, a trim resistor R
T-
DEC R
, (Fig. 13B) should be connected between the
TRIM (Pin 6) and Vout2(+) pin (Pin 7), with a
value from the table below, where:
? = percentage
Vout(NOM).
of
increase
or
decrease
Table B. Use for models: Q2D30ZED, Q2D30ZDB
Trim Resistor
(Vout Increase)
? [%]
1
2
3
4
5
6
7
8
9
10
Trim Resistor
(Vout Decrease)
? [%]
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
R
T-INCR
[kO]
60.4
29.4
19.6
14.3
11.3
9.31
7.87
6.81
5.90
5.23
R
T-DECR
[kO]
28.7
13.3
8.45
5.90
4.32
3.40
2.67
2.10
1.69
1.37
Models using the trim configuration shown in
figure 13B include: Q2D30ZEB, Q2D30ZEY,
Q2D30ZDB, Q2D30ZBA.
Note 1: Both outputs are trimmed up or down
simultaneously.
Trim Resistor
(Vout Increase)
? [%]
1
2
3
4
5
6
7
8
9
10
Trim Resistor
(Vout Decrease)
? [%]
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
R
T-INCR
[kO]
54.9
24.9
14.3
9.31
6.34
4.32
2.80
1.69
0.825
0
R
T-DECR
[kO]
68.1
30.1
17.8
11.5
7.68
5.36
3.48
2.10
1.05
0
Table C. Use for models Q2D30ZBA
Note 2: The above trim resistor values match
those typically used in industry-standard dual
quarter bricks.
Input Under-Voltage Lockout
Input under-voltage lockout is standard with this
converter. The converter will shut down when the
input voltage drops below a predetermined
voltage.
The input voltage must be at least 35V for the
converter to turn on. Once the converter has been
turned on, it will shut off when the input voltage
drops below 31V. This feature is beneficial in
preventing deep discharging of batteries used in
telecom applications.
Table A. Use for models: Q2D25ZGE,
Q2D25ZGB, Q2D30ZEB, Q2D30ZEY.
Rev. NOV 13, 2002
Page 9 of 14
