ISO-9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
20W
DC-DC
CONVERTERS
BBF2800S
SERIES
(315) 701-6751
FEATURES:
All Ceramic Capacitors
Surface Mount Magnetics
MIL STD 461C CR03 (DC-DC Converters)
80 Volt Input Transient Tolerent
Wide Supply Range - 16V to 50V
High Isolation - 500V
High Power Density - 17W/in³
Output Voltage Adjustment - Standard
Remote Shutdown
Operates to 14V Input at 10W
Available with 3.3V, 5V, 12V and 15V Outputs
MIL-PRF-38534 CERTIFIED
DESCRIPTION:
The BBF2800S series of DC-DC converters provides the ruggedness, reliability and features required to
meet the advanced design challenges of today's hi-rel market. This
has been accomplished using a package
having very low thermal gradients, excellent hermeticity and high voltage isolation. The use of advanced substrate
and reflow soldering techniques during construction results in a rugged, cost-effective pin solderable package.
The BBF2800S hybrid converter series utilizes all ceramic capacitors and surface mount magnetics to provide
reliable operation at all operating temperatures while surviving very high G forces.
BBF2800S series standard features include kelvin sense, indefinite short circuit protection, remote shutdown,
output fault monitoring, turn on voltage point adjustment, switching frequency synchronization of up to 3 units using
no external components and pi-network input filtering. An output voltage adjustment/load compensation pin is also
standard.
Fault tolerance design protects these converters from most external circuit faults. The output and output adjust
pins will withstand +35V while the shutdown and all synchronization pins will withstand +50V protecting the
converters from a variety of system or board faults, i.e. solder bridges, etc. Unique load fault protection circuitry
allows this converter to pull up loads having difficult static load line characteristics and allows short term load
excursions significantly beyond ratings in most applications.
The BBF2800 series is a current mode push-pull topology converter which operates at a switching frequency of
500KHz. Internal filtering of both input and output eliminates the need for external capacitors in many applications.
The 12-pin power dip package allows connection to a heatsink and is hermetically sealed and isolated from the
internal circuits.
1
Rev. E 12/04
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Isolated Step Down Power Supply
Microprocessor Power Source
Low Voltage Subsystem Power Source
1
2
3
4
5
6
PIN-OUT INFORMATION
+Input
Shutdown Plus
Clock
Adjust/Comp
-Output
+Output
12
11
10
9
8
7
-Input
Timing 2
Timing 1
Case
-Sense
+Sense
ABSOLUTE MAXIMUM RATINGS
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6.5°C/W
NOTES:
1 Continuous operation above the absolute maximum ratings may adversly effect the device performance and/or life cycle.
2
Rev. E 12/04
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+50V
V
IN
Input Voltage (pin 7 to pin 6)
80V
V
INT
Input Transient (pin 7 to pin 6 @ 50mS)
I
OUT
Output Current
1
BBF2803S
5.5A
BBF2805S
4.0A
BBF2812S
1.9A
BBF2815S
1.5A
T
C
Case Temperature Range
BBF2800S H/E
-55°C to +125°C
BBF2800S
-40°C to +85°C
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T
ST
Storage Temperature Range
T
LD
Lead Temperature Range
(10 Seconds)
P
D
Power Dissipation
T
J
Junction Temperature
θ
JC
Thermal Resistance
(Switches)
-65°C to +150°C
300°C
See Efficiency Curve
150°C
ELECTRICAL SPECIFICATIONS
BBF2803S
Parameter
Test Conditions
1
Group A
Subgroup
1
2,3
Output Current 2 8
16V≤V
IN
≤40V
BW=10KHz to 2MHz
1
2,3
1
2,3
1
2,3
1
2,3
1
2,3
1
2,3
Step Load Response
2
I
OUT
=2.75A to/from 5.50A
Transition TIme=30µS
I
OUT
=2.75A to/from 5.50A
Transition TIme=30µS
V
IN
=16V to/from 40V
Transition Time=30µS
V
IN
=16V to/from 40V
Transition Time=30µS
I
OUT
=5.5A
4
5,6
4
5,6
4
5,6
4
5,6
4
5,6
4
5,6
4
5,6
-
P
OUT
=18W MAX.
Enabled, I
OUT
=0mA
Disabled I
OUT
=0mA
Capacitive Load 2
Isolation
Short Circuit Current Limit 7
Switching Frequency
VOUT Adjustment Range
R
POT
=50KΩ
No Effect on DC Performance
Input to output or any pin to case @ 500V
1,2,3
1
2,3
1,2,3
1,2,3
1
1
4
1
BBF2803S H/E
Min.
3.20
3.15
500
500
-
-
-
-
-
-
-
-
61
58
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
16
-
-
-
-
100
5.5
475
±10
BBF2803S
Min.
3.18
-
500
-
-
-
-
-
-
-
-
-
61
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
16
-
-
-
-
100
5.5
475
±10
Units
Max.
3.42
-
5500
-
60
-
60
-
±25
-
±20
-
-
-
±700
-
220
-
±800
-
220
-
300
-
60
100
500
-
60
40
40
-
2.5
300
-
8.5
525
-
VDC
VDC
mA
mA
mVrms
mVrms
mArms
mArms
mV
mV
mV
mV
%
%
mV
mV
µS
µS
mV
mV
µS
µS
mV
mV
mS
mS
µS
µS
mS
V
mA
mA
mA
µF
MΩ
A
KHz
%
Typ.
3.30
-
-
-
20
-
20
-
±2
-
±1
-
66
-
±400
-
100
-
±500
-
80
-
0
-
30
-
120
-
20
-
35
-
1.25
-
-
7.8
500
-
Max.
3.40
3.45
5500
5500
50
60
50
60
±20
±50
±15
±40
-
-
±600
±800
200
300
±750
±1000
200
300
300
500
60
100
500
550
60
40
40
50
2.5
300
-
8.5
525
-
Typ.
3.30
-
-
-
20
-
20
-
±2
-
±1
-
66
-
±400
-
100
-
±500
-
80
-
0
-
30
-
120
-
20
-
35
-
1.25
-
-
7.8
500
-
Output Voltage
Output Voltage Ripple
Input Current Ripple 2
BW=10KHz to 2MHz
Line Regulation
V
IN
=16V to 40V
Load Regulation
I
OUT
=0.5A to 5.5A
Efficiency
Step Load Recovery 2
Step Line Response 2
Step Line Recovery 2
Start Up Overshoot
2
Start Up Delay
I
OUT
=5.5A
Shutdown Delay 2
Shutdown Recovery 2
Input Voltage Range 2
Quiescent Current
NOTES:
+V
IN
= 28V, I
OUT
= 5.5A, T
A
=T
C
=25°C unless otherwise specified.
Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.
Industrial grade and "E" suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified.
Military grade devices ("H" suffix) shall be 100% tested to subgroups 1, 2, 3 and 4.
Subgroups 5 and 6 testing available upon request.
Subgroup 1, 4 T
A
=T
C
=+25°C
2, 5 T
A
=T
C
=+125°C
3, 6 T
A
=T
C
= -55°C
7 Device has internal shutdown feature that pulses the output with a low duty cycle during faults.
8 At case temperatures above 90°C, the BBF2803 requires VIN>16V to support a 5.5A load. At 125°C, 18V input is required
to support 5.5A output; 16V will support 4A output at 125°C.
1
2
3
4
5
6
3
Rev. E 12/04
ELECTRICAL SPECIFICATIONS
BBF2805S
Parameter
Test Conditions
1
Group A
Subgroup
1
2,3
Output Current 2
16V≤V
IN
≤40V
BW=10KHz to 2MHz
1
2,3
Output Voltage Ripple
1
2,3
Input Current Ripple 2
BW=10KHz to 2MHz
1
2,3
Line Regulation
V
IN
=16V to 40V
1
2,3
Load Regulation
I
OUT
=0.4A to 4.0A
1
2,3
Efficiency
I
OUT
=2A to/from 4A
Transition TIme=30µS
I
OUT
=2A to/from 4A
2
Transition TIme=30µS
V
IN
=16V to/from 40V
Transition Time=30µS
V
IN
=16V to/from 40V
Transition Time=30µS
I
OUT
=4.0A
1
2,3
Step Load Response
2
4
5,6
4
5,6
4
5,6
4
5,6
4
5,6
I
OUT
=4.0A
4
5,6
4
5,6
-
P
OUT
=20W MAX.
Enabled, I
OUT
=0mA
Disabled I
OUT
=0mA
Capacitive Load 2
Isolation
Short Circuit Current Limit 7
Switching Frequency
VOUT Adjustment Range
R
POT
=50KΩ
No Effect on DC Performance
Input to output or any pin to case @ 500V
1,2,3
1
2,3
1,2,3
1,2,3
1
1
4
1
BBF2805S H/E
Min.
5.00
4.90
400
400
-
-
-
-
-
-
-
-
65
61
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
16
-
-
-
-
100
4.0
475
±10
BBF2805S
Min.
4.95
-
400
-
-
-
-
-
-
-
-
-
65
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
16
-
-
-
-
100
4.0
475
±10
Units
Max.
5.15
-
4000
-
60
-
60
-
±50
-
±50
-
-
-
±1200
-
220
-
±900
-
220
-
400
-
60
100
500
-
60
40
40
-
2.5
300
-
7.0
525
-
VDC
VDC
mA
mA
mVrms
mVrms
mArms
mArms
mV
mV
mV
mV
%
%
mV
mV
µS
µS
mV
mV
µS
µS
mV
mV
mS
mS
µS
µS
mS
V
mA
mA
mA
µF
MΩ
A
KHz
%
Typ.
5.05
-
-
-
20
-
20
-
±5
-
±2
-
72
-
±700
-
100
-
±500
-
80
-
0
-
30
-
120
-
20
-
35
-
1.25
-
-
6.0
500
-
Max.
5.10
5.20
4000
4000
50
60
50
60
±25
±50
±25
±50
-
-
±1000
±1500
200
300
±800
±1100
200
300
400
600
60
100
500
550
60
40
40
50
2.5
300
-
7.0
525
-
Typ.
5.05
-
-
-
20
-
20
-
±5
-
±2
-
72
-
±700
-
100
-
±500
-
80
-
0
-
30
-
120
-
20
-
35
-
1.25
-
-
6.0
500
-
Output Voltage
Step Load Recovery
Step Line Response 2
Step Line Recovery 2
Start Up Overshoot
2
Start Up Delay
Shutdown Delay 2
Shutdown Recovery 2
Input Voltage Range 2
Quiescent Current
NOTES:
1
2
3
4
5
6
+V
IN
= 28V, I
OUT
= 4.0A, T
A
=T
C
=25°C unless otherwise specified.
Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.
Industrial grade and "E" suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified.
Military grade devices ("H" suffix) shall be 100% tested to subgroups 1, 2, 3 and 4.
Subgroups 5 and 6 testing available upon request.
Subgroup 1, 4 T
A
=T
C
=+25°C
2, 5 T
A
=T
C
=+125°C
3, 6 T
A
=T
C
= -55°C
7 Device has internal shutdown feature that pulses the output with a low duty cycle during faults.
4
Rev. E 12/04
ELECTRICAL SPECIFICATIONS
BBF2812S
Parameter
Test Conditions
1
Group A
Subgroup
1
2,3
Output Current 2
16V≤V
IN
≤40V
BW=10KHz to 2MHz
1
2,3
Output Voltage Ripple
1
2,3
Input Current Ripple 2
BW=10KHz to 2MHz
1
2,3
Line Regulation
V
IN
=16V to 40V
1
2,3
Load Regulation
I
OUT
=0.19A to 1.9A
1
2,3
Efficiency
Step Load Response 2
I
OUT
=0.95A to/from 1.9A
Transition TIme=30µS
I
OUT
=0.95A to/from 1.9A
Transition TIme=30µS
V
IN
=16V to/from 40V
Transition Time=30µS
V
IN
=16V to/from 40V
Transition Time=30µS
I
OUT
=1.9A
1
2,3
4
5,6
4
5,6
4
5,6
4
5,6
4
5,6
I
OUT
=1.9A
4
5,6
4
5,6
-
P
OUT
=22.8W MAX.
Enabled, I
OUT
=0mA
Disabled I
OUT
=0mA
Capacitive Load 2
Isolation
Short Circuit Current Limit
Switching Frequency
VOUT Adjustment Range
R
POT
=50KΩ
7
No Effect on DC Performance
Input to output or any pin to case @ 500V
1,2,3
1
2,3
1,2,3
1,2,3
1
1
4
1
BBF2812S H/E
Min.
12.00
11.80
190
190
-
-
-
-
-
-
-
-
67
60
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
16
-
-
-
-
100
1.9
475
±10
BBF2812S
Min.
11.95
-
190
-
-
-
-
-
-
-
-
-
67
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
16
-
-
-
-
100
1.9
475
±10
Units
Max.
12.15
-
1900
-
60
-
40
-
±60
-
±60
-
-
-
±1400
-
220
-
±550
-
220
-
500
-
60
-
500
-
60
40
40
-
2.5
300
-
3.4
525
-
VDC
VDC
mA
mA
mVrms
mVrms
mArms
mArms
mV
mV
mV
mV
%
%
mV
mV
µS
µS
mV
mV
µS
µS
mV
mV
mS
mS
µS
µS
mS
V
mA
mA
mA
µF
MΩ
A
KHz
%
Typ.
12.05
-
-
-
25
-
20
-
±5
-
±5
-
74
-
±700
-
100
-
±300
-
70
-
0
-
20
-
120
-
20
-
35
-
1.25
-
-
2.8
500
-
Max.
12.10
12.30
1900
1800
50
60
40
50
±50
±100
±50
±100
-
-
±1200
±1600
200
300
±500
±800
200
300
400
800
60
100
500
550
60
40
40
50
2.5
300
-
3.4
525
-
Typ.
12.05
-
-
-
25
-
20
-
±5
-
±5
-
74
-
±700
-
100
-
±300
-
70
-
0
-
20
-
120
-
20
-
35
-
1.25
-
-
2.8
500
-
Output Voltage
Step Load Recovery 2
Step Line Response 2
Step Line Recovery 2
Start Up Overshoot
Start Up Delay
2
Shutdown Delay 2
Shutdown Recovery 2
Input Voltage Range 2
Quiescent Current
NOTES:
+V
IN
= 28V, I
OUT
= 1.9A, T
A
=T
C
=25°C unless otherwise specified.
Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.
Industrial grade and "E" suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified.
Military grade devices ("H" suffix) shall be 100% tested to subgroups 1, 2, 3 and 4.
Subgroups 5 and 6 testing available upon request.
Subgroup 1, 4 T
A
=T
C
=+25°C
2, 5 T
A
=T
C
=+125°C
3, 6 T
A
=T
C
= -55°C
7 Device has internal shutdown feature that pulses the output with a low duty cycle during faults.
1
2
3
4
5
6
5
Rev. E 12/04
京公网安备 11010802033920号
EEWORLD
