Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Date
4/30/00
9/05/00
3/28/01
Approved
REV
Description
PR-A Preliminary Release
PR-B Preliminary Release
PR-C Remove 1.5, 2, 5V unit –
misc.
updates
KTF
TECHNICAL REFERENCE
NOTES (TRN)
BK60C-H SERIES
HIGH EFFICIENCY
DC-DC CONVERTER
ASTEC POWER
ANDOVER, MA
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ASTEC POWER - Andover
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Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Electrical Specifications
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device.
These are absolute stress ratings only. Functional operation of the device in not implied at these
or any other conditions in excess of those given in the operational sections of the TRN. Exposure
to absolute maximum ratings for extended periods can adversely affect device reliability.
Table 1. Absolute Maximum Ratings
Parameter
Device
Input Voltage:
Continuous:
All
Transient (100ms)
All
Operating Case Temperature
All
Storage Temperature
All
Operating Humidity
All
I/O Isolation
All
Symbol
V
I
V
I, trans
Tc
Tstg
-
-
Min
0
0
-40
-55
-
-
Typ
-
-
-
-
-
-
Max
80
100
100
125
95
1500
Unit
Vdc
Vdc
ºC
ºC
%
Vdc
Input Specifications
Table 2. Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current
(V
I
= 0 to V
I,max
: Io = Io,max)
Input Reflected-ripple Current
(
5Hz to 20MHz: 12uH source
impedance: T
A
= 25 ºC.) See Figure 9.
Device
All
018FX
025FX
033FX
All
All
All
Symbol
V
I
I
I,max
I
I,max
I
I,max
I
I
-
-
Min
36
-
-
-
-
-
-
Typ
48
-
-
-
10
-
-
Max
75
3.0
4.0
5.0
-
7.5
3.7
Unit
Vdc
A
A
A
mAp-p
W
uF
No Load Input Power
(V
I
= V
I,nom
)
Internal Input Capacitance
Output Specifications
Table 3. Output Specifications
Parameter
Output Voltage Setpoint
(V
I
= V
I,min
to V
I,max
: Io = Io,max;
T
A
= 25 ºC )
Device
018FX
025FX
033FX
Symbol
Vo,set
Vo,set
Vo,set
Min
1.77
2.46
3.25
Typ
1.8
2.5
3.3
Max
1.83
2.54
3.35
Unit
Vdc
Vdc
Vdc
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ASTEC POWER - Andover
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Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Output Specifications
(continued)
Table 3. Output Specifications
(continued)
Parameter
Output Regulation:
Line (
V
I
= V
I,min
to V
I,max
)
Load(Io = Io,min to Io,max)
Temperature
(Tc = -40 ºC to +100 ºC)
Device
All
Symbol
-
-
-
-
-
-
Io
Io
Io
Io
-
Io
Io
Io
f
f
f
Min
-
-
-
-
-
-
0.5
0.5
0.5
45
-
80
82
84
-
-
-
Typ
0.05
0.1
15
-
-
-
-
-
-
-
-
82
84
86
330
330
400
Max
0.2
0.3
50
150
10,000
40
40
40
55
190
-
-
-
-
-
-
Unit
%Vo
%Vo
mV
mVp-p
uF
A
A
A
A
%Io,max
Output Ripple and Noise
(Across 0.1uF ceramic and 10uF
tantalum capacitors) See Figure 10.
All
All
018FX
025FX
033FX
All
All
018FX
025FX
033FX
018FX
025FX
033FX
External Load Capacitance
Output Current
Output Current-limit Inception
(Vo = 90% Vo,set)
Output Short-circuit Current
(Vo = 250mV)
Efficiency
(
V
I
= V
I,nom
; Io = Io,max;
Tc = 25°C
)
Switching Frequency
%
%
%
kHz
kHz
kHz
Dynamic Response:
(∆Io/∆t = 1A/10us; V
I
= V
I,nom
; T
c
=
70 ºC )
Load Change from Io = 50% to
75% of Io, max:
Peak Deviation
Settling Time
Load Change from Io = 50% to
25% of Io, max:
Peak Deviation
Settling Time
Turn-on Time
(Io = Io,max; Vo within 1%)
All
-
-
-
-
-
-
6
300
%Vo
usec
All
-
-
-
-
-
-
-
-
-
-
2
-
6
300
5
5
%Vo
usec
msec
All
All
Output Voltage Overshoot
(Io = Io,max; T
c
= 70 ºC)
%Vo
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ASTEC POWER - Andover
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Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Isolation Specifications
Table 4. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Device
All
All
Symbol
-
-
Min
-
-
Typ
2300
1000
Max
-
-
Unit
pF
Mohm
General Specifications
Table 5. General Specifications
Parameter
Calculated MTBF
(Io = Io,max; T
A
= 25 ºC
)
Weight
Device
All
All
Symbol
-
-
Min
-
-
Typ
TBD
-
Max
-
100(3.5)
Unit
hours
g (oz.)
Feature Specifications
Table 6. Feature Specifications
Parameter
Remote On/Off Signal Interface:
(V
I
= 0 to V
I,max
; Open collector or
equivalent compatible; Signal
referenced to V
I
(-) terminal.)
Device
Symbol
Min
Typ
Max
Unit
Positive Logic – No Suffix
Low Logic – Module Off
High Logic – Module On
Negative Logic –Suffix “N”
Low Logic – Module On
High Logic – Module Off
Module Specifications:
On/Off Current – Logic Low
On/Off Voltage:
Logic Low
Logic High
(Ion/off = 0)
Open Collector Switch
Specifications:
Leakage Current – Logic High
(Von/off = 10V)
All
All
All
Ion/off
Von/off
Von/off
-
-0.7
-
-
-
-
1.0
1.2
10
mA
V
V
All
All
All
All
Ion/off
Von/off
-
-
-
-
-
90
-
-
-
-
50
1.2
0.5
110
uA
V
V
%Vo
Output Voltage – Logic Low
(Ion/off = 1mA)
Output Voltage Adjustment
Remote Sense Range
Voltage Adjustment Range
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ASTEC POWER - Andover
4 of 14
Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Feature Specifications
(continued)
Table 6. Feature Specifications
(continued)
Parameter
Output Overvoltage Clamp
Overtemperature Shutdown
Undervoltage Lockout
Turn-on Point
Turn-off Point
Device
018FX
025FX
033FX
All
Symbol
Vo,clamp
Vo,clamp
Vo,clamp
Tc
Min
2.4
3.1
3.9
105
Typ
-
-
-
110
Max
2.7
3.5
4.6
120
Unit
V
V
V
ºC
V
V
All
All
-
-
-
32
34.5
32.5
35
-
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ASTEC POWER - Andover
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