Military DC-DC Converters

Series FB/MB Single and Series FB/MB Dual

Isolated Regulated 100 Watts, Wide Input Range/36-72 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 frequency-100 Khtz
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

    50 Standard Models
For all variations, call factory. 

For Parallel Operation: Add suffix "P" (i.e. FB/MB5SP).
Consult factory to optimize for your application
Series FB : (-40º C to +85º C Operating Temperature)
Series MB : (-55º C to +85º C Operating Temperature)
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 FB and MB Series of high power DC-DC Converters, allow a wide input voltage of 36-72 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 FB/MB Single * 100 Watts * Input 36-72 VDC
Input
Volt.
Range
(V DC)
Outp.
Volt.
(V DC)
Max.
Output
Power
*
(W)
EFF.
Full
Load
Typical
**
(%)
Max.
Load
Regulation
(%)**
Max.
Line
Regulation
At Full Load
(%)
Output
Voltage
Ripple
(Full
Load)
1-1MHz
BW
(MV P-P)
Outp.
Volt.
Toler.
**
(±%)
Series FB Single
(-40º C to +85º C)
Series MB Single
(-55º C to +85º C)
10-50%
50-100%
36-48V
48-72V
Pico
Part
Number
Price
Pico
Part
Number
Price
36-72
3.3
50
76
1.50
1.50
0.75
0.75
50
2.0
FB3.3S
222.56
MB3.3S
333.84
36-72
5
75
78
1.00
1.00
0.75
0.75
50
1.5
FB5S
222.56
MB5S
333.84
36-72
5.2
75
78
1.00
1.00
0.75
0.75
50
1.5
FB5.2S
222.56
MB5.2S
333.84
36-72
9
100
82
1.00
1.00
0.75
0.75
50
1.0
FB9S
222.56
MB9S
333.84
36-72
12
100
84
0.75
0.75
0.50
0.50
50
1.0
FB12S
222.56
MB12S
333.84
36-72
15
100
85
0.75
0.75
0.50
0.50
50
1.0
FB15S
222.56
MB15S
333.84
36-72
24
100
87
0.50
0.50
0.50
0.50
50
0.5
FB24S
222.56
MB24S
333.84
36-72
28
100
87
0.50
0.50
0.50
0.50
50
0.5
FB28S
222.56
MB28S
333.84
36-72
48
100
88
0.50
0.50
0.50
0.50
50
0.5
FB48S
222.56
MB48S
333.84
36-72
100
100
87
0.50
0.50
0.50
0.50
50
0.5
FB100S
333.84
MB100S
500.76
10% Minimum load required at all times.
* Using proper thermal management, maximum temp. of +85º C (case)
** Reading taken at nominal 48 VDC input

Series FB/MB Dual * 100 Watts * Input 36-72 VDC
Input
Volt.
Range
(V DC)
Outp.
Volt.
(V DC)
Max.
Output
Power
*
(W)
EFF.
Full
Load
Typical
**
(%)
Max.
Load
Regulation
(%)**
Max.
Line
Regulation
At Full Load
(%)
Output
Voltage
Ripple
(Full
Load)
1-1MHz
BW
(MV P-P)
Outp.
Volt.
Toler.
**
(± %)
Series FB Dual
(-40º C to +85º C)
Series MB Dual
(-55º C to +85º C)
10-50%
50-100%
36-48V
48-72V
Pico
Part
Number
Price
Pico
Part
Number
Price
36-72
5
37.5/37.5
78
1.00
1.00
0.75
0.75
50
1.5
FB5D
318.89
MB5D
478.29
36-72
9
50/50
82
1.00
1.00
0.75
0.75
50
1.0
FB9D
318.86
MB9D
478.29
36-72
12
50/50
84
0.75
0.75
0.50
0.50
50
1.0
FB12D
318.86
MB12D
478.29
36-72
15
50/50
85
0.75
0.75
0.50
0.50
50
1.0
FB15D
318.86
MB15D
478.29
36-72
24
50/50
87
0.50
0.50
0.50
0.50
50
0.5
FB24D
318.86
MB24D
478.29
36-72
28
50/50
87
0.50
0.50
0.50
0.50
50
0.5
FB28D
318.86
MB28D
478.29
36-72
48
50/50
88
0.50
0.50
0.50
0.50
50
0.5
FB48D
318.86
MB48D
478.29
10% Minimum load required at all times.
* Using proper thermal management, maximum temp. of +85º C (case)
** Reading taken at nominal 48 VDC input

****HIGH VOLTAGE SERIES FB/MB
TO 300 VDC   -   100 WATTS   -   INPUT 36-72 VDC

INPUT
VOLTAGE
(VDC)
OUTPUT
VOLTAGE
(VDC)
MAX.
OUTPUT
POWER
(W)*
EFF. @
FULL
LOAD
TYP.
(%)**
MAX. LOAD
REGULATION
(%)**
MAX. LINE
REGULATION
AT FULL LOAD
(%)
OUTPUT
VOLTAGE
RIPPLE
FULL
LOAD
1-1MHz
BW
(%)
OUTPUT
VOLTAGE
Tolerance
(±%)*
SERIES FB SINGLE
(-40ºC to +85ºC)
SERIES MB SINGLE
(-55ºC to +85ºC)
10-50%
50-100%
36-48V
48-72V
PICO
PART
NUMBER
PRICE
PICO
PART
NUMBER
PRICE
36-72
125
100
85
0.5
0.5
0.3
0.3
1
0.5
FB125S
333.84
MB125S
500.76
36-72
150
100
85
0.5
0.5
0.3
0.3
1
0.5
FB150S
333.84
MB150S
500.76
36-72
175
100
85
0.5
0.5
0.3
0.3
1
0.5
FB175S
333.84
MB175S
500.76
36-72
200
100
85
0.5
0.5
0.3
0.3
1
0.5
FB200S
445.12
MB200S
667.68
36-72
225
100
85
0.5
0.5
0.3
0.3
1
0.5
FB225S
445.12
MB225S
667.68
36-72
250
100
85
0.5
0.5
0.3
0.3
1
0.5
FB250S
445.12
MB250S
667.68
36-72
275
100
85
0.5
0.5
0.3
0.3
1
0.5
FB275S
445.12
MB275S
667.68
36-72
300
100
85
0.5
0.5
0.3
0.3
1
0.5
FB300S
556.40
MB300S
834.60
10% Minimum load required at all times
*Using proper thermal management maximum temp of +85ºC (case)
**Reading taken at nominal 48 VDC input
****UL approval recognition pending


GO TO APPLICATION NOTES
GO TO MECHANICAL CONFIGURATIONS



Larger Version of Graph










For immediate engineering assistance or to place an order: Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1837
Tel: 914-738-1400 Fax: 914-738-8225