CMYF/CMYFW Series
20 Watt Single Output
Chassis Mount DC/DC Converter
2:1 and 4:1 Wide Input Voltage Range
Rev. B
APPLICATIONS
● Measurement
FEATURES
● Single Output
● Wireless Network
● 20 Watts Output Power
● Telecom/Datacom
● Industry Control System
● Semiconductor Equipment
● High Efficiency up to 87%
● Fixed Switching Frequency
● Six-Sided Continuous Shield
● 2:1 and 4:1 Wide Input Voltage Range
● ISO9001 Certified Manufacturing Facilities
● Call Factory for More Output Power Options
● Compliant to RoHS EU Directive 2002/95/EC
● UL60950-1, EN60950-1, and IEC60950-1 Licensed
● CE Mark meets 2006/95/EC, 93/68/EEC, and 89/336 EEC
● Chassis Mount Options: Open Frame, U Channel, and Enclosed Types Available
SPECIFICATIONS: CMYF/YFW Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
GENERAL SPECIFICATIONS
Input Voltage Range
Efficiency ..................................................................................... see table
Switching Frequency............................................................... 300KHz typ.
Isolation Voltage (Input to Output)........................................1600VDC min.
Isolation Resistance............................................................. 109 ohms min.
Isolation Capacitance.............................................................. 300pF max.
CMYF.............................12V nominal input ......................... 9-18VDC
24V nominal input ....................... 18-36VDC
48V nominal input ....................... 36-75VDC
CMYFW..........................24V nominal input ......................... 9-36VDC
48V nominal input ....................... 18-75VDC
Input Surge Voltage (100ms max) ....... 12V input.......................... 36VDC
24V input.......................... 50VDC
ENVIRONMENTAL SPECIFICATIONS
48V input.........................100VDC
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.
Input Reflected Ripple Current (nominal Vin and full load)...........25mAp-p
Start Up Time (nominal Vin and constant resistive load).............20ms typ.
Remote ON/OFF (See Note 7)
(Positive Logic)...............DC-DC ON............ Open or 3.5V < Vr < 12V
DC-DC OFF ............ Short or 0V < Vr < 1.2V
Input Current of Remote Control Pin (nominal Vin).......... -0.5mA ~ 1.0mA
Remote Off State Input Current (nominal Vin) ..................................20mA
Thermal Impedance (See Note 8)
Natural Convection............................................................10°C / Watt
Natural Convection with Heat-Sink ...................................8.24°C/Watt
OUTPUT SPECIFICATIONS
Thermal Shock................................................................... MIL-STD-810F
Vibration................................10~55Hz, 10G, 30 minutes along X, Y, and Z
MTBF (See Note 1).............................................................1.928 x 106 hrs
Output Voltage............................................................................see table
Voltage Accuracy (nominal Vin and full load)..................................... ±1%
Voltage Adjustability.........................................................................±10%
Output Current ............................................................................see table
Output Power...................................................................... 20 watts max.
Line Regulation (LL to HL at FL)......................................................±0.2%
Load Regulation (no load to full load) ..............................................±0.5%
Minimum Load (See Note 6)........................................................see table
Ripple/Noise (20 MHz BW)..........................................................75mVp-p
PHYSICAL SPECIFICATIONS
Potting material of the DC/DC converter...........................Epoxy (UL94-V0)
Shielding of the DC/DC converter ..............................................six – sided
Weight ...........................................................................Approximately 7oz
Dimensions..................................................4(L) x 2.2(W) x 0.81(H) inches
SAFETY & EMC
Approvals and Standards..................IEC60950-1, UL60950-1, EN60950-1
EMI ...................................EN55022............................................. Class A
Transient Response Recovery Time................................................ 250us
(25% load step)
Air
± 8KV
PROTECTION SPECIFICATIONS
ESD........... EN61000-4-2………..
………...Perf. Criteria B
Contact ± 6KV
Over Voltage Protection .......................... 3.3V Output.......................3.9V
Radiated Immunity.............EN61000-4-3 ...............10V/m Perf. Criteria A
Fast Transient....................EN61000-4-4 ................ ±2KV Perf. Criteria B
Surge.................................EN61000-4-5 ..................±1KV Perf. Criteria B
Conducted Immunity ..........EN61000-4-6 ............10 Vrms Perf. Criteria A
Zener diode clamp
5V Output..........................6.2V
12V Output.........................15V
15V Output.........................18V
Over Load Protection (% of full load at nominal input) ............. 150% max.
Short Circuit Protection .................................. Hiccup, automatic recovery
Due to advances in technology, specifications subject to change without notice
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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