DD Series
DC/DC Converter
60 Watt Single Output
2:1 Wide Input Voltage Range
FEATURES
● Single Output Up to 14A
● High Efficiency up to 91%
● RoHS Directive Compliant
● Fixed Switching Frequency
● No Minimum Load Required
● Six-Sided Continuous Shield
● 2:1 Wide Input Voltage Range
● Approved for Basic Insulation
● 60 Watts Maximum Output power
● Standard 2.02” x 2.02” x 0.4” Package
UL
TUV
CB
CE MARK (Pending)
SPECIFICATIONS: DD Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
PROTECTION SPECIFICATIONS
Input Voltage Range ............ 24V nominal input...................... 18 - 36VDC
Over Voltage Protection .....................3.3V Output.................... 3.7V - 5.4V
48V nominal input...................... 36 - 75VDC
(Ctrl. voltage clamp)
5V Output....................... 5.6V - 7.0V
12V Output................. 13.5V - 19.6V
15V Output................. 16.8V - 20.5V
Under Voltage Lockout
24V nominal input........... DC-DC ON..................................17VDC typ.
DC-DC OFF................................15VDC typ.
Over Load Protection (% of FL at nominal input) ....................... 150% max.
Short Circuit Protection......................................Hiccup, automatic recovery
Over Temperature Protection.......................................................110°C typ.
48V nominal input........... DC-DC ON..................................34VDC typ.
DC-DC OFF................................32VDC typ.
Input Filter....................................................................................... Pi Type
GENERAL SPECIFICATIONS
Input Voltage Variation......... dv/dt............................................ 5V/ms max
(Complies with ETS300 132 part 4.4)
Efficiency ........................................................................................see table
Switching Frequency .................................................................300KHz typ.
Isolation Voltage (Input to Output).........................................1600VDC min.
Isolation Voltage (Input to Case) ...........................................1600VDC min.
Isolation Voltage (Output to Case) ........................................1600VDC min.
Case Grounding (connect case to -Vin with decoupling Y cap) ........... TBD
Isolation Resistance ...............................................................109 ohms min.
Isolation Capacitance ............................................................. 1500pF max.
Input Surge Voltage (100ms max) ............... 24V input ...................50VDC
48V input .................100VDC
Input Reflected Ripple Current (nominal Vin and FL) ...................20mAp-p
Start Up Time (nominal Vin and constant resistive load)
Power Up..............................................................................20ms max.
Remote ON/OFF ..................................................................20ms max.
Remote ON/OFF (See Note 2)
Positive Logic ................ DC-DC ON................Open or 3V < Vr < 12V
DC-DC OFF.............Short or 0V < Vr < 1.2V
Negative Logic ............... DC-DC ON...............Short or 0V < Vr < 1.2V
DC-DC OFF..............Open or 3V < Vr < 12V
ENVIRONMENTAL SPECIFICATIONS
Operating Ambient Temperature............. -40°C to +50°C (without derating)
Remote Off Input Current (nominal Vin) ..............................................3mA
+50°C to +105°C (with derating)
OUTPUT SPECIFICATIONS
Storage Temperature ..........................................................-55°C ~ +125°C
Maximum Case Temperature........................................................... +105°C
Relative Humidity...................................................................5% to 95% RH
Temperature Coefficient................................................... ±0.02% / °C max.
Output Voltage..............................................................................see table
Voltage Accuracy (nom Vin and full load)........................................... ±1%
Voltage Adjustability (See Note 1) ..................................................... ±10%
Output Current ..............................................................................see table
Output Power........................................................................ 60 watts max.
Line Regulation (LL to HL at FL)....................................................... ±0.2%
Load Regulation (no load to 100% load)........................................... ±0.5%
Minimum Load .....................................................................................0mA
Output Ripple & Noise ..................................................................see table
Transient Response Recovery Time (25% load step change)...........250us
Thermal Impedance (See Note 4)
Without Heat-Sink..............................................................9.2°C / Watt
With Heat-Sink.....................................................................7.6°C/Watt
Thermal Shock .................................................................... MIL-STD-810D
Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z
MTBF (See Note 3) ........Bellcore TR-NWT-000332............ 1.093 x 106 hrs
MIL-STD-217F ............................. 1.096 x 105 hrs
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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