ZFW Series
Single and Dual Outputs
30 Watt DC/DC Converter
4:1 Wide Input Voltage Range
FEATURES
● 30 Watts Output Power
● Output Current up to 8A
● High Efficiency up to 88%
● Fixed Switching Frequency
● Six-Sided Continuous Shield
● 4:1 Wide Input Voltage Range
● Single and Dual Outputs Available
● Standard 2.0” x 1.6” x 0.4” Package
● International Safety Standard Approval
SPECIFICATIONS: ZFW Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
PROTECTION SPECIFICATIONS
Input Voltage Range .................... 24V nominal input................ 10-40VDC
48V nominal input................ 18-75VDC
Over Voltage Protection ...................................1.5V Output.................3.9V
Zener diode clamp
1.8V Output.................3.9V
2.5V Output.................3.9V
3.3V Output.................3.9V
5V Output....................6.2V
12V Output...................15V
15V Output...................18V
Under Voltage Lockout
24VDC input........................... DC-DC ON.................................10VDC
DC-DC OFF...............................16VDC
48VDC input........................... DC-DC ON.................................18VDC
DC-DC OFF...............................16VDC
Over Load Protection (% of full load at nominal input)............... 150% max.
Short Circuit Protection......................................Hiccup, automatic recovery
Over Temperature Protection.......................................................115°C typ.
Input Filter (See Note 2)............................................................... L-C Type
Input Voltage Variation ................ dv/dt................................... 5V/ms max.
(Complies with ETS300 132 part 4.4)
Input Surge Voltage (100ms max) ........... 24V input .......................50VDC
48V input .....................100VDC
GENERAL SPECIFICATIONS
Efficiency ........................................................................................see table
Input Reflected Ripple Current (nominal Vin and full load)...........20mAp-p
Switching Frequency .................................................................300KHz typ.
Start Up Time (nominal Vin and constant resistive load)
Isolation Voltage
Power Up................................................................................10ms typ.
Remote ON/OFF ....................................................................10ms typ.
Input to Output...................................................................1600VDC min.
Input to Case .....................................................................1600VDC min.
Output to Case...................................................................1600VDC min.
Remote ON/OFF (See Note 4)
(Positive Logic)............... DC-DC ON................Open or 3V < Vr < 12V
DC-DC OFF.............Short or 0V < Vr < 1.2V
Isolation Resistance ...............................................................109 ohms min.
Isolation Capacitance .............................................................. 1000pF max.
Remote Off Input Current (nominal Vin) ..............................................3mA
ENVIRONMENTAL SPECIFICATIONS
OUTPUT SPECIFICATIONS
Operating Temperature ................................ -40°C to +85°C (with derating)
Storage Temperature ..........................................................-55°C ~ +105°C
Maximum Case Temperature........................................................... +100°C
Relative Humidity (non-condensing) .....................................5% to 95% RH
Temperature Coefficient................................................... ±0.02% / °C max.
Output Voltage..............................................................................see table
Voltage Accuracy (nominal Vin and full load) ...................................... ±1%
Voltage Adjustability........................................................................... ±10%
Output Current ..............................................................................see table
Output Power........................................................................ 30 watts max.
Line Regulation (LL to HL at FL)...................................................... ±0.5%
Thermal Impedance (See Note 6)
Natural Convection.............................................................10°C / Watt
Natural Convection with Heat-Sink....................................8.24°C/Watt
Load Regulation (10% to 100% FL)............. Single......................... ±0.5%
Dual ............................... ±1%
Thermal Shock .................................................................... MIL-STD-810D
Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z
MTBF (See Note 5) .............................................................. 1.315 x 106 hrs
Cross Regulation (Dual) (Asymmetrical load 25%/100% FL) ............. ±5%
Minimum Load (See Note 1)........................ Single............................... 0%
Dual ......................10% of FL
Ripple/Noise (20 MHz BW)...........................................................see table
(measured with a 104pF/50V MLCC)
PHYSICAL SPECIFICATIONS
Weight ..................................................................................... 48g (1.69 oz)
Dimensions................... 2.00 x 1.60 x 0.40 inches (50.8 x 40.6 x 10.2 mm)
Case Material ..............................................................Nickel-coated copper
Base Material...................................................Non-conductive black plastic
Potting material..................................................................Epoxy (UL94-V0)
Shielding...................................................................................... six – sided
Transient Response Recovery Time (25% load step change).......... 250us
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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