BK60C-048L-018F40HN [ASTEC]
36 Vdc to 75 Vdc Inputs, 150 W; 36 Vdc至75 VDC输入， 150瓦
| 型号： | BK60C-048L-018F40HN |
| 厂家： | 
Astec America, Inc |
| 描述： | 36 Vdc to 75 Vdc Inputs, 150 W |
| 文件： | 总14页 (文件大小：119K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
REV
Description
Date
Approved
PR-A Preliminary Release
PR-B Preliminary Release
4/30/00
9/05/00
3/28/01
KTF
PR-C Remove 1.5, 2, 5V unit – misc.
updates
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
Symbol
Min
Typ
Max
Unit
Input Voltage:
Continuous:
All
All
All
All
All
All
VI
VI, trans
Tc
Tstg
-
0
0
-40
-55
-
-
-
-
-
-
-
80
100
100
125
95
Vdc
Vdc
ºC
ºC
%
Transient (100ms)
Operating Case Temperature
Storage Temperature
Operating Humidity
I/O Isolation
-
-
1500
Vdc
Input Specifications
Table 2. Input Specifications
Parameter
Device
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
All
VI
36
48
75
Vdc
Maximum Input Current
(VI = 0 to VI,max: Io = Io,max)
018FX
025FX
033FX
II,max
II,max
II,max
-
-
-
-
-
-
3.0
4.0
5.0
A
A
A
Input Reflected-ripple Current
All
II
-
10
-
mAp-p
(5Hz to 20MHz: 12uH source
impedance: TA = 25 ºC.) See Figure 9.
No Load Input Power
All
All
-
-
-
-
-
-
7.5
3.7
W
(VI = VI,nom
)
Internal Input Capacitance
uF
Output Specifications
Table 3. Output Specifications
Parameter
Output Voltage Setpoint
(VI = VI,min to VI,max: Io = Io,max;
TA = 25 ºC )
Device
018FX
025FX
033FX
Symbol
Vo,set
Vo,set
Vo,set
Min
Typ
Max
1.83
2.54
3.35
Unit
Vdc
Vdc
Vdc
1.77
2.46
3.25
1.8
2.5
3.3
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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:
Device
Symbol
Min
Typ
Max
Unit
Line (VI = VI,min to VI,max
)
All
-
-
-
-
-
-
-
-
0.05
0.1
15
-
0.2
0.3
50
%Vo
%Vo
mV
Load(Io = Io,min to Io,max)
Temperature (Tc = -40 ºC to +100 ºC)
Output Ripple and Noise
(Across 0.1uF ceramic and 10uF
tantalum capacitors) See Figure 10.
All
All
150
mVp-p
External Load Capacitance
-
-
Io
Io
Io
Io
-
-
-
-
-
-
-
-
10,000
uF
Output Current
018FX
025FX
033FX
All
0.5
0.5
0.5
45
40
40
40
55
A
A
A
A
Output Current-limit Inception
(Vo = 90% Vo,set)
%Io,max
Output Short-circuit Current
(Vo = 250mV)
All
-
-
-
190
Efficiency
(VI = VI,nom ; Io = Io,max;
Tc = 25°C)
018FX
025FX
033FX
018FX
025FX
033FX
Io
Io
Io
f
f
f
80
82
84
-
-
-
82
84
86
330
330
400
-
-
-
-
-
-
%
%
%
kHz
kHz
kHz
Switching Frequency
Dynamic Response:
(∆Io/∆t = 1A/10us; VI = VI,nom ; Tc =
70 ºC )
Load Change from Io = 50% to
75% of Io, max:
Peak Deviation
Settling Time
All
All
-
-
-
-
-
-
6
300
%Vo
usec
Load Change from Io = 50% to
25% of Io, max:
Peak Deviation
-
-
-
-
-
-
6
300
%Vo
usec
Settling Time
msec
%Vo
Turn-on Time
All
All
-
-
-
-
2
-
5
5
(Io = Io,max; Vo within 1%)
Output Voltage Overshoot
(Io = Io,max; Tc = 70 ºC)
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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
Symbol
Min
-
-
Typ
2300
1000
Max
-
-
Unit
pF
Mohm
-
-
All
General Specifications
Table 5. General Specifications
Parameter
Calculated MTBF
(Io = Io,max; TA = 25 ºC)
Weight
Device
Symbol
Min
-
Typ
TBD
Max
-
Unit
hours
All
-
100(3.5)
g (oz.)
All
-
-
-
Feature Specifications
Table 6. Feature Specifications
Parameter
Device
Symbol
Min
Typ
Max
Unit
Remote On/Off Signal Interface:
(VI = 0 to VI,max ; Open collector or
equivalent compatible; Signal
referenced to VI (-) terminal.)
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:
All
Ion/off
-
-
1.0
mA
Logic Low
All
All
Von/off
Von/off
-0.7
-
-
-
1.2
10
V
V
Logic High (Ion/off = 0)
Open Collector Switch
Specifications:
Leakage Current – Logic High
(Von/off = 10V)
Output Voltage – Logic Low
(Ion/off = 1mA)
All
All
Ion/off
-
-
-
-
50
uA
V
Von/off
1.2
Output Voltage Adjustment
Remote Sense Range
Voltage Adjustment Range
V
%Vo
-
-
All
All
-
-
-
90
0.5
110
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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
Device
Symbol
Min
2.4
3.1
3.9
105
Typ
-
-
-
Max
2.7
3.5
4.6
120
Unit
V
V
V
ºC
018FX Vo,clamp
025FX Vo,clamp
033FX Vo,clamp
Overtemperature Shutdown
Undervoltage Lockout
All
Tc
110
V
V
Turn-on Point
Turn-off Point
All
All
-
-
-
32
34.5
32.5
35
-
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Technical Reference Notes (TRN)
Characteristic Curves
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
BK60C-048L-033F40H
Input Current (Worst Case)
Tc = 25 C, Iout = 40A
6
5
4
3
2
1
0
0
4
8
12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72
Vin (Volts)
Figure 1. Typical Input Current vs Input Voltage.
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
BK60C-048L-018F40H
Efficiency vs Output Current
Tc = 25 Deg Celsius
BK60C-048L-025F40H
Efficiency vs Output Current
Tc = 25 Deg Celsius
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
0
5
10
15
20
25
30
35
40
0
5
10
15
20
25
30
35
40
Output Current (Amps)
Output Current (Amps)
Figure 2. 018F Efficiency vs Load Current.
Figure 3. 025F Efficiency vs Load Current.
Vin = 36 Vdc
BK60C-048L-033F40H
Efficiency vs Output Current
Tc = 25 Deg Celsius
Vin = 48 Vdc
Vin = 75 Vdc
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
0
5
10
15
20
25
30
35
40
Output Current (Amps)
Figure 4. 033F Efficiency vs Load Current.
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Technical Reference Notes (TRN)
Characteristic Curves (continued)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Figure 5. Typical Output Voltage Startup
Vi = Vi,nom, Io = Io,max.
Figure 6. Typical Output Ripple (033F)
Vi = Vi,nom, Io = Io,max.
Figure 7. Typical Dynamic Response (033F)
Step Load Change from 50% to 75% Io,max
Figure 8. Typical Dynamic Response (033F)
Step Load Change from 50% to 25% Io,max
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Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Test Configurations
TO OSCILLOSCOPE
Vi(+)
Ltest
12 uH
Cs 220 uF
ESR < 0.1 OHM
@ 20 ºC, 100 kHz
33 uF
ESR < 0.7 OHM
@ 20 ºC, 100 kHz
BATTERY
Vi(-)
Note: Measure input reflected-ripple current with a simulated source inductance (Ltest) of 12 uH. Capacitor
Cs offsets possible battery impedance. Measure current as shown above.
Figure 9. Input Reflected-ripple Test Setup.
COPPER STRIP
Vo(+)
RESISTIVE
LOAD
0.1 uF
10 uF
SCOPE
Vo(-)
Note: Use a 0.1 uF ceramic capacitor and a 10 uF tantalum capacitor. Scope measurement should be made
using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in. ) from module.
Figure 10. Peak-to-Peak Output Noise Measurement Test Setup.
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Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Feature Descriptions
Output Overvoltage Clamp
The output overvoltage clamp consists of a separate control loop, independent of the primary
control loop. This control loop has a higher voltage setpoint than the primary loop. In a fault
condition the converter goes into “Hiccup Mode”, and the output overvoltage clamp ensures that
the output voltage does not exceed Vo,clamp,max. This secondary control loop provides a
redundant voltage-control that reduces the risk of output overvoltage.
Output Current Protection
To provide protection in an output overload or short circuit condition, the converter is equipped
with current limiting circuitry and can endure the fault condition for an unlimited duration. At the
point of current-limit inception, the converter goes into “Hiccup Mode”, causing the output current
to be limited both in peak and duration. The converter operates normally once the output current
is brought back into its specified range.
Enable (Optional)
Two enable option are available. Positive Logic Enable, no suffix, and Negative Logic Enable,
suffix “N”. Positive Logic Enable turns the converter on during a logic-high voltage on the enable
pin, and off during a logic-low. Negative Logic Enable turns the converter off during a logic-high
and on during a logic-low.
Output Voltage Adjustment
Output voltage adjustment is accomplished by connecting an external resistor between the Vadj
Pin and either the +Sense or –Sense Pins.
With an external resistor between the Vadj Pin and -Sense Pin (Radj-down) the output voltage set
point (Vo,adj) decreases (see Figure 11). The following equation determines the required external
resistor value to obtain an adjusted output voltage:
100
.
2 kohm
Radj_down
%Vo,adj
Where Radj-down is the resistance value and %Vo,adj is the percent change in the output voltage.
With an external resistor between the Vadj Pin and +Sense Pin (Radj-up) the output voltage set
point (Vo,adj) increases (see Figure 12). The following equation determines the required external
resistor value to obtain an adjusted output voltage:
.
.
Vo (100 %Vo,adj) 100 2 %Vo,adj
.
Radj_up
kohm
.
1.225%Vo,adj
%Vo, adj
Where Radj-up is the resistance value and %Vo,adj is the percent change in the output voltage.
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Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
-Vin
-Vout
Case
-Sense
Vadj
Radj-down
Rload
Enable
+Vin
+Sense
+Vout
Figure 11 . Circuit Configuration to Decrease Output Voltage.
-Vin
-Vout
Case
-Sense
Vadj
Rload
Radj-up
Enable
+Vin
+Sense
+Vout
Figure 12 . Circuit Configuration to Increase Output Voltage.
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Technical Reference Notes (TRN)
Thermal Considerations
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
The power converter operates in a variety of thermal environments: however, sufficient cooling
should be provided to help ensure reliable operation of the converter. Heat-dissipating
components are thermally coupled to the case. Heat is removed by conduction, convection and
radiation to the surrounding environment. Proper cooling can be verified by measuring the case
temperature.
Heat Transfer Characteristics
Increasing airflow over the converter enhances the heat transfer via convection. Figure 13 shows
the maximum power that can be dissipated by the converter without exceeding the maximum
case temperature versus local ambient temperature (TA) for natural convection through 2.0 m/s
(400 ft/min).
Systems in which these converters are used generate airflow rates of 0.25 m/s (50 ft/min) due to
other heat dissipating components in the system. Therefore, the natural convection condition
represents airflow rates of approximately 0.25 m/s (50 ft/min). Use of Figure 13 is shown in the
following example.
Example
What is the minimum airflow required for an 033F40H operating at 48 V, an output current of 25
A, and maximum ambient temperature of 55 ºC.
Solution:
Given: Vi = 48 V, Io = 25 A, TA = 55 ºC.
Determine PD (Figure 16): PD = 13 W.
Determine airflow (Figure 16): v = 1.0 m/s (200 ft/min)
Nat. Conv.
BK60C SERIES
Power Derating Curve
0.5 m/s (100 ft/min)
1.0 m/s (200 ft/min)
2.0 m/s (400 ft/min)
30
25
20
15
10
5
0
25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110
Ambient Temperature (ºC)
Figure 13. Forced Convection Power Derating
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Technical Reference Notes (TRN)
Thermal Considerations (continued)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
BK60C-048L-018F40H
Dissipation vs Output Current
Tc = 100 Deg Celsius
Vin = 36 Vdc
Vin = 48 Vdc
Vin = 75 Vdc
BK60C-048L-025F40H
Dissipation vs Output Current
Tc = 100 Deg Celsius
Vin = 36 Vdc
Vin = 48 Vdc
Vin = 75 Vdc
25
20
15
10
5
25
20
15
10
5
0
0
0
5
10
15
20
25
30
35
40
0
5
10
15
20
25
30
35
40
Output Current (Amps)
Output Current (Amps)
Figure 14. 018F Pwr. Diss. vs Load Current.
Figure 15. 025F Pwr. Diss. vs Load Current.
Vin = 36 Vdc
Vin = 48 Vdc
Vin = 75 Vdc
BK60C-048L-033F40H
Dissipation vs Output Current
Tc = 100 Deg Celsius
30
25
20
15
10
5
0
0
5
10
15
20
25
30
35
40
Output Current (Amps)
Figure 16. 033F Pwr. Diss. vs Load Current.
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Technical Reference Notes (TRN)
Outline Drawing
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Tolerances: x.xx +/- 0.02 in (x.x +/- 0.5mm)
x.xxx +/- 0.010 in (x.xx +/- 0.25mm
Pin Assignment
1. -Vin
2. Case
3. Enable (on/off)
4. + Vin
5. - Output
6. - Sense
7. Trim
8. + Sense
9. + Output
All pins are 0.040 diameter except pins 5 & 9 which are 0.080 diameter.
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Technical Reference Notes (TRN)
BK60C-H Series
36 Vdc to 75 Vdc Inputs, 150 W
Table 8 Part Numbers.
Model Designation
018FN
Part Number
BK60C-048L-018F40HN
BK60C-048L-025F40HN
BK60C-048L-033F40HN
BK60C-048L-018F40H
BK60C-048L-025F40H
BK60C-048L-033F40H
025FN
033FN
018F
025F
033F
Table 9. Options
Suffix
Option
N
No Suffix
-6
Negative Logic Enable
Positive Logic Enable
3.7 mm Pin Length
2.8 mm Pin Length
-8
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