Military DCDC Converters
Series LFD/LMD Single and Series LFD/LMD Dual
Isolated Regulated 75 Watts, Wide Input Range/200380 VDC
Fully Regulated, Short Circuit Protected
Parallel Operation Available
Features:
Dual isolated outputs
Short circuit protection
Input voltage protection
Thermal, over temp. shutdown
Line regulation
Load regulation
No external components required
Hi density, hi efficiency design
Remote shutdown
Trim capabilities
Fixed frequency100 Khtz
46 Standard Models For all variations, call factory.
For Parallel Operation: Add suffix "P"
(i.e. LFD/LMD5SP) Consult factory to optimize for your application.
Series LFD : (40º C to +85º C Operating Temperature)
Series LMD : (55º C to +85º C Operating Temperature)
Typical Characteristics:
Frequency: 100 Khtz
Base plate: Max. +85º C
Operating temperature: See thermal chart: 40º C to +85º C base plate,
55º C to +85º C base plate.
Test conditions: 25º C ambient
Isolation Base Input: 2121 VDC
Isolation Input Output: 4242 VDC
Isolation Output to Base: 1000 VDC
Storage temperature: 55º C to +105º C
Surge
:
Meets MIL STD 704
Vibration: Meets MIL STD 202 Method 204 Cond. D
Humidity: Meets MIL STD 202 Method 106
Shock: Meets MIL STD 202 Method 213 Cond. I
Altitude: Meets MIL STD 202 Method 105 Cond. D
Selected MIL STD 883 Options also Available
Stabilization Bake: MIL STD 883 Method 1008 24 Hrs TA=125º C
Burn In: MIL STD 883 Method 1015 160 Hrs at 90º C, case
Temperature Cycle: MIL STD 883 55ºC to +105ºC Method 1010 Cond. B
The PICO LFD and LMD Series of high power DCDC Converters, allow a wide input voltage of 200380 VDC, while maintaining a regulated
output. They are fully safeguarded for over voltage, over temperature and continuous short circuit protection.
The availability of Dual Isolated outputs, small size, and the capability of parallel operation as standard features should reduce your design and
component costs, while the fixed frequency operation helps parallel connections for higher power requirements.
This high density unit is assembled in the USA with PICO quality and component selection, allowing it to meet the most stringent commercial
requirements.
Series LFD/LMD Single * 75 Watts * Input 200380 VDC
Input
Volt.
Range
(V DC)
Outp.
Volt.
(V DC)
EFF.
Max.
Full
Output
Load
Power
Typical
*
**
(W)
(%) 1050% 50100%
30
50
50
65
75
75
75
75
75
75
73
80
80
84
84
84
85
86
85
85
1.50
1.25
1.25
1.25
1.00
1.00
0.75
0.50
0.50
0.50
1.50
1.25
1.25
1.25
1.00
1.00
0.75
0.50
0.50
0.50
Max.
Load
Regulation
(%)**
Max.
Line
Regulation
At Full Load
(%)
200
300V
1.00
1.00
1.00
0.75
0.75
0.75
0.50
0.50
0.50
0.50
300
380V
1.00
1.00
1.00
0.75
0.75
0.75
0.50
0.50
0.50
0.50
Output
Voltage
Ripple
(Full
Load)
11MHz
BW
(MV P
P)
50
50
50
50
50
50
50
50
50
100
Outp.
Volt.
Toler.
**
(± %)
Series LFD Single Series LMD Single
(40º C to +85º C) (55º C to +85º C)
Price
Price
Pico
Part
Number
LFD3.3S
LFD5S
LFD5.2S
LFD9S
LFD12S
LFD15S
LFD24S
LFD28S
LFD48S
LFD100S
(US $)
324.92
324.92
324.92
324.92
324.92
324.92
324.92
324.92
324.92
487.38
Pico
Part
Number
LMD3.3S
LMD5S
LMD5.2S
LMD9S
LMD12S
LMD15S
LMD24S
LMD28S
LMD48S
LMD100S
(US $)
455.50
455.50
455.50
455.50
455.50
455.50
455.50
455.50
455.50
683.25
200380
200380
200380
200380
200380
200380
200380
200380
200380
200380
3.3
5
5.2
9
12
15
24
28
48
100
2
1.5
1.5
1
1
1
0.5
0.5
0.5
0.5
10% Minimum load required at all times.
* Using proper thermal management, maximum temp. of +85º C (case)
** Reading taken at nominal 300 VDC input
Series LFD/LMD Dual * 75 Watts * Input 200380 VDC
EFF.
Full
Load
Typical
**
(%)
1050% 50100%
80
84
84
84
85
86
85
1.25
1.25
1
1
0.75
0.5
0.5
1.25
1.25
1
1
0.75
0.5
0.5
Input
Volt.
Range
(V DC)
Outp.
Volt.
(V DC)
Max.
Output
Power
*
(W)
Max.
Load
Regulation
(%)**
Max.
Line
Regulation
At Full Load
(%)
200
300V
1
0.75
0.75
0.5
0.5
0.5
0.5
300
380V
1
0.75
0.75
0.5
0.5
0.5
0.5
Output
Voltage
Ripple
(Full
Load)
11MHz
BW
(MV P
P)
50
50
50
50
50
50
50
Outp.
Volt.
Toler.
**
(± %)
Series LFD Dual Series LMD Dual
(40º C to +85º C) (55º C to +85º C)
Pico
Part
Number
LFD5D
LFD9D
LFD12D
LFD15D
LFD24D
LFD28D
LFD48D
Price
(US $)
438.27
438.27
438.27
438.27
438.27
438.27
438.27
Pico
Part
Number
LMD5D
LMD9D
LMD12D
LMD15D
LMD24D
LMD28D
LMD48D
Price
(US $)
614.39
614.39
614.39
614.39
614.39
614.39
614.39
200380
200380
200380
200380
200380
200380
200380
5
9
12
15
24
28
48
50
65
75
75
75
75
75
1.5
1
1
1
0.5
0.5
0.5
10% Minimum load required at all times.
* Using proper thermal management, maximum temp. of +85º C (case)
** Reading taken at nominal 300 VDC input
****HIGH VOLTAGE SERIES LFD/LMD
TO 250 VDC 50 WATTS INPUT 200380 VDC
MAX. LINE
OUTPUT
MAX.
SERIES LFD
REGULATION VOLTAGE
LOAD
SINGLE
EFF. @
AT FULL
INPUT
MAX.
RIPPLE OUTPUT
(40ºC to
OUTPUT
OUTPUT REGULATION
LOAD
VOLTAGE
OUTPUT
FULL
VOLTAGE
(%)**
+85ºC)
VOLTAGE
LOAD
(%)
RANGE
POWER
LOAD
Tolerance
(VDC)
TYP.
(VDC)
(W)*
11 MHz
(±%)**
PICO
(%)**
10
50
200
300
PRICE
BW
PART
50% 100% 300V 380V
(US $)
(%)
Number
200380
200380
200380
200380
200380
200380
125
150
175
200
225
250
50
50
50
50
50
50
85
85
85
85
85
85
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
1
1
1
1
1
1
0.5
0.5
0.5
0.5
0.5
0.5
LFD125S
LFD150S
LFD175S
LFD200S
LFD225S
LFD250S
487.38
487.38
487.38
649.85
649.85
649.85
SERIES LMD
SINGLE
(55ºC TO
+85ºC)
PICO
PRICE
PART
(US $)
Number
LMD125S
LMD150S
LMD175S
LMD200S
LMD225S
LMD250S
683.25
683.25
683.25
911.00
911.00
911.00
10% Minimum load required at all times
*Using proper thermal management maximum temp of +85ºC (case)
**Reading taken at nominal 300 VDC input
****UL approval recognition pending
VIEW HEAT SINKS
GO TO APPLICATION NOTES
GO TO MECHANICAL CONFIGURATION
Larger Version of Graph
For immediate engineering assistance or to place an order: Call Toll Free: 8004311064
PICO Electronics, Inc.
143 Sparks Ave. Pelham, NY 108031810
Tel: 9147381400 Fax: 9147388225
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