Installation Data Sheet
LAMBDA ELECTRONICS INC.
λ
PM30-48D DC-DC Converters
The PM30 is a DC-DC converter which provides a regulated output at power levels up to 30 watts. It accepts a wide range DC input and provides a fully
isolated, regulated output. In operation, either (or neither) input pin, as well as either (or neither) output pin can be grounded. * PM30 units provide full
output power for ambient temperatures up to 50°C, with linear derating from 50°C to zero power at 105°C. In forced air applications, full output power
can be maintained as long as the chassis temperature, as measured in the center of the unit’s label, is maintained at less then or equal to 100°C.
Note: For safety agency approval of the end use equipment to safety standards (such as UL 1950 3
rd
Edition, CAN/CSA C22.2 No. 950-95, DIN VDE
0805 and EN 60950), the output of the converter is ELV if the input to the converter is ELV; the output of the converter is SELV only if its input is SELV.
The input and output are to be both floating or both grounded. The converter is to be protected by the specified fuse, provided in the ungrounded leg.
The CE mark on the product is applied to show conformance to the requirements outlined in the European Union’s low voltage directive (72/23/EEC) as
amended by the CE mark directive (93/68/EEC).
Specifications:
MODEL
ITEMS
Nominal Output Voltage
Voltage Accuracy
Output Current (Power) @ 50°C
Operating Temperature
Output Voltage Adjustment Range
Output Ripple (20MHz BW)
Line Regulation
Load Regulation (10% - 100%)
Remote On /Off
Temperature Coefficient
Overshoot
Input Voltage Range
Efficiency (Typical)
No Load Input Power
Conducted EMI
Short Circuit Protection
Overvoltage Clamp Point (fixed)
Isolation (Input to Output)
Regulatory Agency Compliance**
Mounting & Connections
Cover
Size (W.H.D.)
Storage Temperature
Cooling
Vibration
Relative Humidity
Altitude
Fungus Proofing
Thermal Cycling
Warranty
V
-
A/W
-
V
mV
mV
mV
-
-
-
-
%
W
-
-
V
-
-
-
-
in
-
-
-
-
-
-
-
-
PM30-48D12
Output 1
+12
Output 2
-12
PM30-48D15
Output 1
+15
Output 2
-15
± 1.5%
1.25 (15.0)
1.00 (15.0)
-25°C to + 105°C. Derate linearly above + 50°C to 0 watts at 105°C
Total o/p adj. Between 21.6 and 26.4
Total o/p adj. Between 27 and 33V
25mV RMS / 100 mV p-p
48 total output, 60 per output
60 total output, 75 per output
240 total output, 360 total output
300 total output, 450 per output
Logic 1 or open enables unit, logic 0 or short shuts unit down. Referenced to -Vin
±0.015% / °C
No overshoot at turn on, turn off, power failure or removal of a short circuit
36 – 75 Vdc
80
0.4
EN55022 Level B, FCC Level B with external filter
Continuous
30 max. (total output)
37.5 max. (total output)
900Vac, 1500Vdc, 10MΩ
ETSI-300-132-2, Bellcore GR-1089, UL1950 3
rd
Edition, CAN/CSA C22.2 No. 950-95,
EN 60950, VDE 0805
0.040” diameter, 0.22” long solderable pins
0.032” anodized aluminum
2.5” x 3.0” x 0.335”
-40°C to + 105°C
Convection cooling allows full o/p rating. Contact factory for rating w/external forced air
2.5G RMS,10Hz – 50 Hz, random vibration, 10 minutes per axis
5% - 95%, non-condensing
10,000 feet max. operating / 45,000 feet max. storage
Units are inherently fungus inert
1 hour @ -25°C ramped to 1 hour @ +25°C ramped to 1 hour @ +100°C, 10 cycles
ramp = 5°C/ minute
2 year warranty includes parts and labor
**Regulatory Agency compliance testing is in process. Check individual unit’s label for appropriate agency logos.
Note: Regulation values pertain to operation with output currents above 10% of rated load current on main output and above 25% of rated output current
on auxiliary outputs.
Total Output Power vs. Ambient Operating Temperature
30
25
Power (Watts)
D12, D15
20
15
10
5
0
-40
-25 -20
-10
0
10
20
30
40
Temperature (
°C
)
12V, 15V Outputs
50
60
70
80
90
100
110
Consult factory for operation below -25°C
IM-PM3048D 8/01 REV: C
Installation Data Sheet
LAMBDA ELECTRONICS INC.
λ
PM30-48D DC-DC Converters
Recommended Circuit Hook up:
Appropriate hook up location
for test equipment to monitor
output of PM unit
Fuse
+
DC
Source
36 – 75V
-
S1
On/Off
System Ground
Trim
Optional
EMI
-Vin
PM3048D
+Vin
+V o
com
-Vo
R1
Load
1uF
-
DVM
0.1uF
Oscillo-
scope
50 ohm
Coax Cable
Load
50
Notes:
1.
2.
3.
4.
5.
Input can have -Vin, +Vin or neither terminal grounded. Input ground connection should be placed as close to PM unit input as possible.
Output can have -Vo, +Vo or neither terminal grounded. Output ground connection should be placed as close to PM unit input as
possible.
Recommended input fusing: 2A (Buss PCB2, or equivalent).
Remote on/off control: low impedance path, or logic 0, referenced to –Vin disables unit output. Open circuit, or logic 1, referenced to –Vin
enables output.
Output voltage programming: Resistor connected from Pin 5 to either –V or +V will generate increased or decreased output voltages,
respectively, as follows.
PM3048D12 Voltage Trim Adjusts the total
voltage (+) out to (-) out
Output Voltage
Output Voltage
PM3048D15 Voltage Trim Adjusts the total
voltage (+) out to (-) out
40
30
20
10
0
15
30
45
60
75
90
0
30
20
10
0
0
15
30
45
60
75
90
Res to -
Res to +
Res to -
Res to +
External Resistor Value in Kohm
External Resitor Value in Kohm
Mechanical Information:
PM30 units are designed for installation on printed wiring boards. The chassis has four tabs built in to provide clearance between the unit body and the
PCB to allow for wave soldering. During wave soldering, the top surface of the board to which the PM unit is mounted (measured ½” from the edge of
the PM unit) should be maintained at a temperature of no more than 180°C for no more than 30 seconds. The chassis of the PM unit is electrically
isolated from both the input and output circuitry and should be left floating in a typical installation.
IM-PM3048D 8/01 REV: C
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