Astrodyne Corporation
35 Hampden Road
Tel: (508) 964-6300
Fx: (508) 339-0375
UV28
MICROVERTER
®
SERIES
28VDC INPUT
3/4 BRICK SINGLES
FULL BRICK TRIPLES
126-252 WATTS
DESCRIPTION
The µV28 Series are high density DC-DC
converters designed for use in telecom and
other centralized modular and distributed
power applications. The µV28 Series
use metal
PC boards, planar transformers,
and surface
mount construction to produce up to 252
watts in a tiny package.
FEATURES
• Miniature Size
• High Density – Up to 58 W/in.3
• Constant Frequency – 370KHZ
• Parallelable with Current Sharing
• Fault Tolerant – n+m Redundancy
• Extremely Low Thermal Resistance
• Output Good Signal
• Optional Sync Pin
• Non-Shutdown OVP
•
• Thermal Protection
• Current Limit/Short Circuit Protection
SINGLE OUTPUT
MODEL SELECTION
Model
µV28-2
µV28-3
µV28-5
µV28-8
µV28-12
µV28-15
µV28-24
µV28-28
µV28-T512
Output
Voltage
2.1V
3.3V
5V
8V
12V
15V
24V
28V
5V
12V
-12V
5V
15V
-15V
Output
Current
60A
50A
40A
30A
20A
16A
10A
9A
35A*
3A*
3A*
35A*
3A*
3A*
TRIPLE OUTPUT
µV28-T515
*Maximum Total Output Power 185 W.
Option: – A Output Good Deleted
– S Sync. Pin Option
www.astrodyne.com
www.roassoc.com
30
Astrodyne USA: 1-800-823-8082
Astrodyne Corporation
35 Hampden Road
Tel: (508) 964-6300
Fx: (508) 339-0375
UV28 MICROVERTER SERIES SPECIFICATIONS
Min
INPUT
Input v oltage
B r o w no u t
In rus h c harge
Input re fl ec ted ripple
N o load pow er dis s ipation
Logic dis abled pow er in
Input ripple rejec tion
Input ov erv oltage
OUTPUT
(Singles and Main Output of Triple)
S et point ac c urac y
Load regulation
L ine regulation
R ipple
Trim range
R em ote s ens e c om pens ation
OVP (non shutdown auto. recovery)
C urrent L im it (auto. rec ov ery )
C urrent s haring (autom atic )
Trans ient res pons e s ingles
Trans ient res pons e m ain output triples
Transient response
Tem p drift
E ciency
OUTPUT
(Auxiliary Outputs of Triples)
S et point ac c urac y
Load regulation
L ine regulation
R ipple
C urrent L im it (auto. rec ov ery )
Trans ient res pons e
Trans ient res pons e
Trans ient res pons e
Tem p drift
Turn on tim e
Logic turn on tim e
Logic dis abled c urrent
Input to output
Input to c as e
O utput to c as e
Input to output c apac ity
Operating temperature
Automatic shut down temperature
Thermal resistance case to ambient
1000
1000
200
2200
-40
+100
+100
+110
20
18
Typical
28
2. 6x 10-4
20
1. 5
7.5
. 35
60
32
60
Max
32
Units
Conditions
V DC
V DC
C oulom bs
%
w atts
watts
w atts
dB
V DC
75% full output
Full Load, nom inal line
s ingles
triples
@ 120 H z
no dam age to units
. 02
. 02
1
± 10
±1
.2
.2
3
0. 5
%
%
%
% p-p
%
V total
%
%
%
µs
µs
no load
0 to Full Load
o v e r r a nge
0 to 20M H z
consult factory for extended range
* or Vout +.5V whichever is greater
Full Load
Full lLoad
20-80% load,.5A/µs, Vout 1%
10-20A, aux. loads 2.5A,
.25A/µs, Vout 1%
120*
110-120
±5
50
200
See web site: www.roassoc.com
. 02
See Curves on Page 80
% /°C
± 0. 5
.2
. 01
. 25
110-120
200
200
200
. 06
2. 5
1
1
±1
.5
.1
.5
%
%
%
% p-p
%
µs
µs
µs
% /°C
ms
ms
mA
V DC
V DC
V DC
pF
°C case
°C case
°C/w
°C/w
oz.
oz.
inc hes
inc hes
10A on main, no load auxiliaries
0 to full load
o v e r r a nge
0 to 20 m H z
Full Load
20-80% load, Vout w ithin 1%
low line to high line, Vout 1%
50-100% load, Vout 1%
CONTROL
input power applied, Vout 1%
Vout w ithin 1%
s ink
c ons ult fac tory for proc edure
ISOLATION
THERMAL
+105
4.2
3.3
7
9
single @ Tc=100 °C
triple @ Tc=100 °C
WEIGHT
s ingles
triples
s ingles
triples
SIZE
0. 5x 2. 4x 3. 6
0. 5x 2. 4x 4. 6
www.astrodyne.com
www.roassoc.com
30
Astrodyne USA: 1-800-823-8082
Astrodyne Corporation
35 Hampden Road
Tel: (508) 964-6300
Fx: (508) 339-0375
MICROVERTER SERIES
2, 3 and 5V Output Models
85
5V
EFFICIENCY (%)
80
3.3V
75
2V
EFFICIENCY (%)
85
12V
24V
80
90
12 and 24V Output M odels
70
50
100
150
OUTPUT POWER, WATTS
200
75
50
100
150
200
OUTPUT POWER, WATTS
250
Triple Output Models
85
85
Triple Output Models
EFFICIENCY (%)
80
EFFICIENCY (%)
200
5V@ 22A
80
75
5V@ 13A
75
5V@5A
70
50
100
150
OUTPUT POWER, WATTS
5V Load Fixed, Aux. Output Loads
Varied From 0 to 3A Each
70
50
100
150
200
OUTPUT POWER, WATTS
Aux. Loads Fixed at
±
2A, 5V Load Varied
All Loads Varied
MINIMUM LOAD
– TRIPLES
Minimum 5V Load vs. Auxiliary Output Power
µV300
Triple Output Models
2.0
Minimum 5V Load vs. Auxiliary Output Power
µV28
and
µV48-Triple
Output Models
2.0
1.5
5V LOAD (A)
5V LOAD (A)
1.5
1.0
Tc=100
°C
Tc=70
°C
0.0
30
36
42
48
54
60
66
72
78
84
90
1.0
Tc=100
°C
Tc=25
°C
0.5
0.5
0.0
30
36
42
48
54
60
66
72
78
84
90
AUXILIARY OUTPUT POWER, WATTS
AUXILIARY OUTPUT POWER, WATTS
www.astrodyne.com
www.roassoc.com
Note: E ciencies are typical for Tc=25
°
C and Nominal Input. Input and Output Voltages are measured at the Pins.
Astrodyne USA: 1-800-823-8082
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