Wall CMFA12S12-300 Full brick 250-300 watt, single output chassis mount dc/dc converter Datasheet

CMFA Series
Rev E
Full Brick
250-300 Watt, Single Output
Chassis Mount DC/DC Converter
FEATURES
● 100% Burn In
● Chassis Mount
● Synchronizable
● Output Trim ±10%
● 1500VDC Isolation
● Operation to No Load
● Very Low Output Ripple
● Output Current up to 60A
● Fast Transient Response
● Fixed Switching Frequency
● 250-300 Watts Output Power
● Remote Sense Compensation
● Remote ON/OFF (Active High/Low)
● Short Circuit and Over Temperature Protection
● 90% Efficient at Half Load, 88% Efficient at Full Load
DESCRIPTION
The CMFA series consists of high-density full brick converters
that incorporate the desired features required in today’s
demanding low voltage bus applications. Its unique dual
interleaved phase-shifted topology minimizes both input and
output noise. When performance, reliability, and low cost are
needed, the CMFA series delivers.
SPECIFICATIONS: CMFA Series
All specifications apply @ 25°C ambient unless othe rwise noted
INPUT SPECIFICATIONS
PROTECTION SPECIFICATIONS
Input Voltage Range................................................................. 10-36VDC
Current Limit ......................................................................................130%
UVLO Turn On at ................................................................... 10VDC max
Short Circuit Protection ......................................Continuous, self re-setting
UVLO Turn off at ................................................................... 9.5VDC max
Over Temperature Protection .....................................110°C, self re-setting
Input Surge Voltage (100ms)......................................................... 50VDC
GENERAL SPECIFICATIONS
Reflected Ripple Current (nominal Vin and full load).........................20mA
Remote ON/OFF ................................................See Technical Datasheet
Input Current under Remote Off .........................................................1mA
Maximum Input Current (Low Line)......................................................35A
No Load Input Current........................................................................0.1A
OUTPUT SPECIFICATIONS
Efficiency ..................................................................................90% typical
Switching Frequency............................................................... 700KHz typ.
Isolation Voltage (Input to Output)........................................1500VDC min.
Isolation Resistance .....................................................................1GΩ min.
Isolation Capacitance...................................................................... 0.01µF
ENVIRONMENTAL SPECIFICATIONS
Output Voltage ............................................................................see table
Voltage Accuracy ...............................................................................±1%
Output Adjustability ..........................................................................±10%
Output Current ............................................................................see table
Output Power ..............................................................................see table
Operating Temperature (ambient) .......................... -40°C ~ +100°C (case)
Storage Temperature .........................................................-55°C ~ +125°C
Humidity.................................................................fully potted construction
Cooling ........................................................ heatsink optional (see Note 4)
MTBF................................................................................ 2,212,456 hours
Line Regulation (LL to HL at FL)......................................................±0.2%
Load Regulation (20% to 100% load) ..............................................±0.2%
PHYSICAL SPECIFICATIONS
Ripple/Noise (20 MHz BW)................................................... 1% Vout max
Weight ............................................................................................... 11 oz
Temperature Coefficient.................................................±0.02% / °C max.
Dimensions of Fixture .......................... 8.00(L) x 3.40(W) x 0.91(H) inches
Transient Response (50% load step)............................. 5% total deviation
Dimensions of DC/DC Converter..........................4.6(L) x 2.4(W) x 0.50(H)
Shielding of DC/DC Converter.......................................................six-sided
Due to advances in technology, specifications subject to change without notice
09/13/2013
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 1 of 3
CMFA Series
Full Brick
250-300 Watt, Single Output
Chassis Mount DC/DC Converter
Rev E
MODEL SELECTION TABLE
Model Number for
Threaded Inserts
Model Number for
Thru-Hole Inserts
CMFA12S5-300
Input Voltage Range
Output Voltage
Output Current
Output Power
CMFA12S5-300TH
5 VDC
60A
300W
CMFA12S12-300
CMFA12S12-300TH
12 VDC
25A
300W
CMFA12S15-300
CMFA12S15-300TH
15 VDC
20A
300W
CMFA12S20-300
CMFA12S20-300TH
20 VDC
15A
300W
CMFA12S24-300
CMFA12S24-300TH
24 VDC
12.5A
300W
12/24 VDC
(10 – 36 VDC)
CMFA12S26-300
CMFA12S26-300TH
26 VDC
11.538A
300W
CMFA12S28-300
CMFA12S28-300TH
28 VDC
10.714A
300W
CMFA12S43-250
CMFA12S43-250TH
43 VDC
5.814A
250W
CMFA12S48-250
CMFA12S48-250TH
48 VDC
5.208A
250W
NOTES
1. Pin to pin tolerance ± 0.01" [±0.3mm]. Pin diameter tolerance ±0.005" [±0.13mm].
2. Case material of the DC/DC converter: 0.040" [1.02mm] thick, aluminum alloy 3003-0, Per: QQA 250/2.
3. Unit comes with either 3M x 0.5 threaded thru inserts for the chassis mount board or for Ø.125 thru-hole for the
chassis mount board add the suffix "TH" to the model part number. Ex: CMFA12S24-300TH.
4. For Heat sink add “HS” suffix to the model part number. Ex: CMFA12S24-300HS.
5. Active High Enable is standard; for Active Low Enable add “R” suffix to the model number. Ex: CMFA12S24-300R.
DERATING CURVE
CMFA12S24-300 MAX AMBIENT vs OUTPUT POWER
09/13/2013
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 2 of 3
CMFA Series
Full Brick
250-300 Watt, Single Output
Chassis Mount DC/DC Converter
Rev E
MECHANICAL DRAWING
Unit: inches [mm]
8.00 [203.2]
7.000 [177.80]
.50 [12.7]
3.500 [88.90]
+INPUT
+OUTPUT
+S
SD
3.40 [86.4]
2.875 [73.03]
TRIM
SYNC
-S
-INPUT
-OUTPUT
.26 [6.7]
.000 [0.00]
DATE CODE
LABEL
SERIAL NO:
UNIT THRU HOLE Ø.125 [3.2] 6X REF
PCB THRU HOLE Ø.140 [3.6] 6X REF
Ø.143 [3.6] MOUNTING HOLES 6X
GROUNDED 6-PLACES
TERMINAL SCREW .136 (NO:6)-32UNC 9X
.91 [23.0]
.24 [6.0] REF
Ø.28 [7.1] 6X
.000 [0.00]
.13 [3.2] 6X REF
.000 [0.00]
TO ORDER
1. Unit comes with either 6-32x.281 threaded thru
inserts for the chassis mount board or for ø.125 thru-hole
for the chassis mount board add the suffix "TH" to the
model part number. Ex: CMFA12S24-300TH.
2. For Heat Sink Add “HS” suffix to model part number.
Ex: CMFA12S24-300HS
09/13/2013
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 3 of 3
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