Q2D25ZGE-C4
| Model | Q2D25ZGE-C4 |
| Description | 2-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| PDF file | Total 13 pages (File size: 196K) |
| Chip Manufacturer | BEL |
Q2D Series – Quarter-Brick DC/DC Converter
48V Input
Dual Output
Safety Requirements
The converters meet North American and
International safety regulatory requirements per
UL60950 and EN60950. Basic Insulation is
provided between input and output.
To comply with safety agencies requirements, an
input line fuse must be used external to the
converter. A 5-A fuse is recommended for use
with this product.
Electromagnetic Compatibility (EMC)
EMC requirements must be met at the end-
product system level, as no specific standards
dedicated to EMC characteristics of board
mounted component dc-dc converters exist.
However, Power-One tests its converters to
several system level standards, primary of which
is the more stringent EN55022,
Information
technology equipment - Radio disturbance
characteristics - Limits and methods of
measurement.
With the addition of a simple external filter (see
application notes), all versions of the QD48T
family of converters pass the requirements of
Class B conducted emissions per EN55022 and
FCC, and meet at a minimum, Class A radiated
emissions per EN 55022 and Class B per FCC
Title 47CFR, Part 15-J. Please contact Power-
One Applications Engineering for testing details.
Data Sheet
Iout1=Iout2 for all derating curves.
120
% of Max. Load Current Iout1, Iout2
110
100
90
80
70
60
50
40
30
20
10
0
20
30
40
50
60
70
80
90
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0 LFM (0 m/s)
Ambient Temperature [°C]
Fig.14 Q2D25ZGE (5.0V/3.3V) Derating Curves
20.0
Load Current Iout1, Iout2 [Adc]
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0
20
30
40
50
60
70
80
90
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0 LFM (0 m/s)
Ambient Temperature [°C]
Fig.15 Q2D25ZGD (5.0V/2.5V) Derating Curves
Thermal Considerations
The Q2D series converters are designed for
natural or forced convection cooling.
The
maximum available output power of the
converters is determined by the maximum
semiconductor junction temperature. To provide
reliable long-term operation of the converters,
Power-One limits maximum allowable junction
temperature to 120°C.
The graphs in Figures 14-20 show the maximum
output current of the Q2D series converters at
different local ambient temperatures at both
natural and forced (longitudinal airflow direction,
from pin 3 to pin 4) convection.
100
90
80
Total Output Power [W]
70
60
50
40
30
20
10
0
20
30
40
50
60
70
80
90
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0 LFM (0 m/s)
Ambient Temperature [°C]
Fig.16 Q2D25ZGB (5.0V/1.8V) Derating Curves
Rev. JUN 06, 2002
Page 10 of 13
