Triple Output/TWR Models
Isolated, High Reliability 1" x 2" DC/DC Converters
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage, nominal output voltage, natural air convection,
ꢁ
external caps and full-load conditions unless noted.
Short Circuit Duration (no damage)
Continuous, output shorted to ground
Input
Overvoltage Protection:
3.3V or 5V Output
Input Voltage Range
See Ordering Guide
3.8Vdc minimum, 4.2Vdc maximum
30Vdc maximum
Method: magnetic feedback
Start-Up Threshold: ꢃ
12V Models
24V Models
12V or 15V Outputs
9V minimum, 9.5V typical
16.5V minimum, 17V typical
34V minimum, 35V typical
48V Models
Dynamic Characteristics
Dynamic Load Response (50-100% loadstep)
3.3V or 5V Output
12V or 15V Outputs
Undervoltage Shutdown: ꢃ
12V Models
24V Models
8V minimum, 8.5V typical
16V minimum, 16.5V typical
32.5V minimum, 34.5V typical
150μsec to 1.5% of final value
150μsec to 10% of final value
48V Models
Start-Up Time
VIN to VOUT regulated
Overvoltage Shutdown:
12V Models
24V Models
TBD msec for VOUT = nominal
330kHz 20kHz
20V typical, 21V maximum
38V typical, 40V maximum
78.5V typical, 81V maximum
Switching Frequency
48V Models
Environmental
Reflected (Back) Ripple Current ꢂ
12mA typical, 20mAp-p maximum
Calculated MTBF
TBD
Input Current:
Operating Temperature: (Ambient) ꢇ
No Derating (Natural convection)
With Derating
Full Load Conditions
No Load VIN = nominal
12V and 24V Models
48V Models
See Ordering Guide
–40 to +65°C
See Derating Curves
25mA typical, 50mA maximum
170mA typical, 200mA maximum
Operating Case Temperature
Storage Temperature
Thermal Protection/Shutdown
Density Altitude
–40 to +100°C maximum
–40 to +120°C
Low-Line Voltage (VIN = VMIN, full load) TBD
+110°C minimum to 120°C maximum
0 to 10,000 feet
Remote On/Off Control ꢅ
Positive Logic (no model suffix)
Off = ground pin to +1.2V maximum
On = open pin to +VIN maximum
2mA maximum
Relative Humidity
10% to 90%, non-condensing
Current
Negative Logic (N model suffix)
On = ground pin to +1.2V maximum
Off = open pin to +VIN maximum
18mA maximum
Physical
Dimensions
See Mechanical Specifications
Black Diallyl Phthalate plastic
Current
Case and Header Material
Pin Dimensions/Material
Output
0.04" (1.016mm) dia. Gold-plated copper
VOUT Range
See Ordering Guide
alloy with nickel underplate.
Weight
VOUT Accuracy:
3.3V or 5V Output
12V or 15V Outputs
1% of VNOM
10% of VNOM (See Technical Notes)
TBD
TBD
Electromagnetic Interference
Safety
Temperature Coefficient
0.02% of VOUT range/°C
UL/cUL 60950-1 CSA-C22.2 No.234
IEC/EN 60950-1
Minimum Loading:
3.3V or 5V Output
12V or 15V Outputs
See Technical Notes
No minimum load
20% minimum of nominal output current,
balanced load
ꢁ
All models are tested/specified with two external 0.047μF output capacitors. These capacitors
are necessary to accommodate our test equipment and may not be required to achieve speci-
fied performance in your applications. All models are stable and regulate within spec under
no-load conditions.
Ripple/Noise (20MHz BW) ꢁꢂꢄ
Line/Load Regulation ꢊ
Efficiency
See Ordering Guide
See Ordering Guide & Technical Notes
See Ordering Guide
ꢂ
ꢃ
Input Reflected Ripple Current is tested/specified over a 20MHz bandwidth. Input filtering is
CIN = 33μF, 100V tantalum; CBUS = 220μF, 100V electrolytic; LBUS = 12μH. See Technical Notes.
Maximum Capacitive Loading:
3.3V or 5V Output
For consistent operation, the instantaneous input voltage for full output load must not go below
the low shutdown voltage AT ALL TIMES. Beware of excessive voltage drop from long input
wiring. For reliable startup, be sure to apply input power promptly and fully as a step function.
TBD
TBD
12V or 15V Outputs
ꢄ
ꢅ
Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case
3, ground fixed conditions, TCASE = +25°C, full load, natural air convection.
Isolation:
Input to Output Voltage
Resistance
Capacitance
Isolation Safety Rating
1500Vdc minimum
100M7
The On/Off Control may be driven with external logic or the application of appropriate voltages
(referenced to Common). The On/Off Control input should use either an open collector/open drain
transistor or logic gate which does not exceed +VIN.The On/Off Control may be supplied with with
negative logic (LO = on, HI = off) using the "N" model suffix.
470pF
Functional insulation
Current Limit Inception: (98% of VOUT)
3.3V Output
5V Output
ꢆ
Maximum Power Derating curves indicate an average current at nominal input voltage. At higher
temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if
the total RMS current over time does not exceed the derating curve.
5 Amps minimum, 6.2 Amps maximum
4 Amps minimum, 5.2 Amps maximum
0.36 Amps minimum, 1 Amp maximum
0.5 Amps minimum, 1.2 Amps maximum
12V Outputs
15V Outputs
ꢇ
ꢈ
All models are fully operational and meet published specifications, including cold start at –40°C.
Output noise may be further reduced by adding an external filter. See I/O Filtering and Noise
Reduction.
Short-Circuit Detection:
3.3V or 5V Output
Magnetic feedback
Magnetic feedback plus voltage clamp
ꢉThe outputs share a common isolated return. The two output sections are not isolated from
each other.
12V or 15V Outputs
Short-Circuit Potection Method
Current limiting with hiccup autorestore.
Remove overload for recovery.
ꢊRegulation specifications describe the deviation as the line input voltage or output load current
is varied from a nominal midpoint value to either extreme.
The outputs will not accept appreciable reverse current without possible damage.
Short-Circuit Current:
3.3V or 5V Output
2 Amps maximum
1 Amp maximum
12V or 15V Outputs
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
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