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
MODEL SELECTION
Model Output Output
Voltage Current
µV28-2 2.1V 60A
µV28-3 3.3V 50A
µV28-5 5V 40A
µV28-8 8V 30A
µV28-12 12V 20A
µV28-15 15V 16A
µV28-24 24V 10A
µV28-28 28V 9A
µV28-T512 5V 35A*
12V 3A*
-12V 3A*
µV28-T515 5V 35A*
15V 3A*
-15V 3A*
*Maximum Total Output Power 185 W.
Option: – A Output Good Deleted
– S Sync. Pin Option
30
UV28 MICROVERTER
®
S E R I E S
126-252 WATTS 28VDC INPUT 3/4 BRICK SINGLES FULL BRICK TRIPLES
SINGLE OUTPUT
TRIPLE OUTPUT
www.astrodyne.com
www.roassoc.com
Astrodyne USA: 1-800-823-8082
Astrodyne Corporation Tel: (508) 964-6300
35 Hampden Road Fx: (508) 339-0375
UV28 MICROVERTER SERIES SPECIFICATIONS
Min Typical Max Units Conditions
INPUT CDV238202egatlov tupnI
tuptuo lluf %57CDV81 tuonworB
sbmoluoC4-01x6.2egrahc hsur nI
Input re fl enil lanimon ,daoL lluF%02elppir detce
selgnissttaw 5.1noitapissid rewop daol oN
7.5 watts triples
sttaw53.ni rewop delbasid cigoL
zH 021 @Bd06 noitcejer elppir tupnI
stinu ot egamad onCDV0623 egatlovrevo tupnI
OUTPUT (Singles and Main Output of Triple)
daol on%1±ycarucca tniop teS
daoL lluF ot 0%2.20.noitaluger daoL
egnar revo%2.20.noitaluger eniL
zHM02 ot 0p-p%31elppiR
%01±egnar mirT
consult factory for extended range
latot V5.0noitasnepmoc esnes etomeR
OVP (non shutdown auto. recovery) 120* %
* or Vout +.5V whichever is greater
daoL lluF%021-011)yrevocer.otua( timiL tnerruC
daoLl lluF%5±)citamotua( gnirahs tnerruC
sµ05selgnis esnopser tneisnarT
20-80% load,.5A/µs, Vout 1%
sµ002 selpirt tuptuo niam esnopser tneisnarT
10-20A, aux. loads 2.5A,
.25A/µs, Vout 1%
Transient response See web site: www.roassoc.com
/%20.tfird pmeT °C
Eciency See Curves on Page 80
OUTPUT (Auxiliary Outputs of Triples)
%1±5.0±ycarucca tniop teS
10A on main, no load auxiliaries
daol lluf ot 0%5.2. noitaluger daoL
egnar revo%1.10. noitaluger eniL
zHm 02 ot 0p-p%5.52. elppiR
daoL lluF %021-011)yrevocer.otua( timiL tnerruC
%1 nihtiw tuoV ,daol %08-02sµ002 esnopser tneisnarT
%1 tuoV ,enil hgih ot enil wolsµ002 esnopser tneisnarT
%1 tuoV ,daol %001-05sµ002 esnopser tneisnarT
/%60.tfird pmeT °C
CONTROL sm5.2 emit no nruT input power applied, Vout 1%
%1 nihtiw tuoVsm1 emit no nrut cigoL
knisAm1 tnerruc delbasid cigoL
ISOLATION erudecorp rof yrotcaf tlusnocCDV0001tuptuo ot tupnI
CDV0001esac ot tupnI
CDV002esac ot tuptuO
Fp0022yticapac tuptuo ot tupnI
THERMAL Operating temperature -40 +100 °C case
Automatic shut down temperature +100 +105 +110 °C case
Thermal resistance case to ambient 4.2 °C/w single @ Tc=100 °C
3.3 °C/w triple @ Tc=100 °C
WEIGHT .zo 7selgnis
.zo 9selpirt
SIZE sehcni 6.3x4.2x5.0selgnis
sehcni 6.4x4.2x5.0selpirt
Astrodyne Corporation Tel: (508) 964-6300
35 Hampden Road Fx: (508) 339-0375
30
www.astrodyne.com
www.roassoc.com
Astrodyne USA: 1-800-823-8082
OUTPUT POWER, WATTS
Aux. Loads Fixed at ± 2A, 5V Load Varied
All Loads Varied
EFFICIENCY (%)
85
80
75
70
50 100 150 200
OUTPUT POWER, WATTS
90
85
80
75
50 100 150 200 250
EFFICIENCY (%)
OUTPUT POWER, WATTS
EFFICIENCY (%)
85
80
75
70
2.0
1.5
1.0
0.5
0.0
2.0
1.5
1.0
0.5
0.0
50 100 150 200
OUTPUT POWER, WATTS
5V Load Fixed, Aux. Output Loads
Varied From 0 to 3A Each
5V@ 22A
5V@ 13A
5V@5A
85
80
75
70
50 100 150 200
EFFICIENCY (%)
5V
3.3V
2V
12V
24V
Triple Output Models
sledoM tuptuO V42 dna 21sledoM tuptuO V5 dna 3 ,2
Triple Output Models
30 36 42 48 54 60 66 72 78 84 9030 36 42 48 54 60 66 72 78 84 90
Minimum 5V Load vs. Auxiliary Output Power
µV28 and µV48-Triple Output Models
AUXILIARY OUTPUT POWER, WATTS
Tc=100 °C
Tc=70 °C
Minimum 5V Load vs. Auxiliary Output Power
µV300 Triple Output Models
AUXILIARY OUTPUT POWER, WATTS
Tc=100 °C
Tc=25 °C
5V LOAD (A)
5V LOAD (A)
MICROVERTER SERIES
MINIMUM LOAD –TRIPLES
Note: Eciencies are typical for Tc=25 ° C and Nominal Input. Input and Output Voltages are measured at the Pins.
www.astrodyne.com
www.roassoc.com
Astrodyne USA: 1-800-823-8082
Astrodyne Corporation Tel: (508) 964-6300
35 Hampden Road Fx: (508) 339-0375