Technical Reference Notes (TRN)
April 2000
AK60C 30W Series
36 Vdc to 75 Vdc Inputs, 30 W
TECHNICAL REFERENCE
NOTES (TRN)
AK60C 30 WATT SERIES
DC-DC CONVERTER
ASTEC POWER
ANDOVER, MA
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ASTEC POWER - Andover
1 of 12
Technical Reference Notes (TRN)
April 2000
AK60C 30W Series
36 Vdc to 75 Vdc Inputs, 30 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.
Parameter
Input Voltage:
Continuous:
Transient (100ms)
Operating Case Temperature
Storage Temperature
Operating Humidity
I/O Isolation
Device
All
All
All
All
All
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 1. Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current
(V
I
= 0 to V
I,max
: Io = Io,max)
Device
All
020FX
033FX
050FX
120FX
150FX
All
All
All
Symbol
V
I
I
I,max
I
I,max
I
I,max
I
I,max
I
I,max
I
I
-
-
Min
36
-
-
-
-
-
-
-
-
Typ
48
-
-
-
-
-
-
-
-
Max
75
0.55
0.85
1.13
1.10
1.10
50
1
2.2
Unit
Vdc
A
A
A
A
A
mAp-p
W
uF
Input Reflected-ripple Current
(
5Hz to 20MHz: 12uH source
impedance: T
C
= 25 ºC.) See Figure 10.
No Load Input Power
(V
I
= V
I,nom
)
Maximum Input Capacitance
CAUTION: This power module is not internally fused. An input line fuse must always be used.
Output Specifications
Table 2. Output Specifications
Parameter
Output Voltage Setpoint
(V
I
= V
I,min
to V
I,max
: Io = Io,max;
T
C
= 25 ºC )
Output Regulation:
Line (
V
I
= V
I,min
to V
I,max
)
Load(Io = Io,min to Io,max)
Temperature
(T
C
= -40 ºC to +100 ºC)
Device
020FX
033FX
050FX
120FX
150FX
All
Symbol
Vo,set
Vo,set
Vo,set
Vo,set
Vo,set
-
-
-
Min
1.96
3.24
4.93
11.80
14.75
-
-
-
Typ
2.0
3.3
5.0
12.0
15.0
0.01
0.05
0.5
Max
2.04
3.37
5.08
12.20
15.25
0.1
0.2
1.5
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
%
%
%Vo
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ASTEC POWER - Andover
2 of 12
Technical Reference Notes (TRN)
April 2000
AK60C 30W Series
36 Vdc to 75 Vdc Inputs, 30 W
Output Specifications
(continued)
Table 2. Output Specifications
(continued)
Output Ripple and Noise
(Across 0.1 uF ceramic capacitors) See
Figure 11.
Peak-to-Peak (5 Hz to 20 MHz)
RMS
All
120FX
150FX
All
120FX
150FX
All
120FX
150FX
020FX
033FX
050FX
120FX
150FX
020FX
033FX
050FX
120FX
150FX
All
020FX
033FX
050FX
120FX
150FX
All
-
-
-
-
-
-
-
-
-
Io
Io
Io
Io
Io
Io
Io
Io
Io
Io
-
Io
Io
Io
Io
Io
-
-
-
-
-
-
-
-
-
-
0.6
0.6
0.6
0.25
0.2
-
-
-
-
-
-
72
78
82
85
85
265
50
75
75
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
75
80
84
87
87
295
150
200
200
20
25
25
6800
2200
2200
6.5
6.5
6.0
2.5
2.0
9
9
8.5
3.5
3.0
190
-
-
-
-
-
325
mVp-p
mVp-p
mVp-p
mV
rms
mV
rms
mV
rms
uF
uF
uF
A
A
A
A
A
A
A
A
A
A
%Io,max
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;
T
C
= 25
ºC )
Switching Frequency
Dynamic Response:
(∆Io/∆t = 1A/10us; V
I
= V
I,nom
; T
C
=
25 ºC )
%
%
%
%
%
kHz
Load Change from Io = 50% to
75% of Io, max:
Peak Deviation
Settling Time
(to Vo,nom)
Load Change from Io = 50% to
25% of Io, max:
Peak Deviation
Settling Time
(to Vo,nom)
Turn-on Time
(Io = Io,max; Vo within 1%)
All
-
-
-
-
-
-
5
500
%Vo
usec
All
-
-
-
-
-
-
-
-
-
-
50
-
5
500
100
5
%Vo
usec
msec
All
All
Output Voltage Overshoot
(Io = Io,max; T
C
= 25 ºC)
%Vo
_____________________________________________________________
ASTEC POWER - Andover
3 of 12
Technical Reference Notes (TRN)
April 2000
AK60C 30W Series
36 Vdc to 75 Vdc Inputs, 30 W
Isolation Specifications
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Device
All
All
Symbol
-
-
Min
-
-
Typ
2300
1000
Max
-
-
Unit
pF
Mohm
General Specifications
Table 4. General Specifications
Parameter
Calculated MTBF
(Io = Io,max; Tc
= 25 ºC
)
Weight
Device
All
All
Symbol
-
-
Min
-
-
Typ
TBD
-
Max
-
60(2.1)
Unit
hours
g (oz.)
Feature Specifications
Table 5. 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
All
All
All
020FX
033FX
050FX
120FX
150FX
Ion/off
Von/off
Von/off
Ion/off
Von/off
-
-
-
-
-
-
-
-0.7
-
-
-
-
80
80
80
80
80
-
-
-
-
-
-
-
-
-
-
-
-
1.0
1.2
10
50
1.2
0.5
110
110
110
110
110
mA
V
V
uA
V
V
%Vo
%Vo
%Vo
%Vo
%Vo
Output Voltage – Logic Low
(Ion/off = 1mA)
Output Voltage Adjustment
Remote Sense Range
Voltage Adjustment Range
_____________________________________________________________
ASTEC POWER - Andover
4 of 12
Technical Reference Notes (TRN)
April 2000
AK60C 30W Series
36 Vdc to 75 Vdc Inputs, 30 W
Feature Specifications
(continued)
Table 6. Feature Specifications
(continued)
Parameter
Output Overvoltage Clamp
Device
020FX
033FX
050FX
120FX
150FX
Symbol
Vo,clamp
Vo,clamp
Vo,clamp
Vo,clamp
Vo,clamp
Min
2.5
4.0
5.6
13.5
17.0
Typ
-
-
-
-
-
Max
4.0
5.7
7.0
16.0
20.0
Unit
V
V
V
V
V
Characteristic Curves
Vin = 36 Vdc
Vin = 36 Vdc
AK60C-048L-020F08
Efficiency vs Output Current
Tc = Tc,max
77.5%
Vin = 48 Vdc
Vin = 75 Vdc
AK60C-048L-033F08
Efficiency vs Output Current
Tc = Tc,max
82.5%
Vin = 48 Vdc
Vin = 75 Vdc
75.0%
80.0%
72.5%
77.5%
70.0%
75.0%
67.5%
72.5%
65.0%
70.0%
62.5%
67.5%
60.0%
0.65
1.30
1.95
2.60
3.25
3.90
4.55
5.20
5.85
6.50
65.0%
0.65
1.30
1.95
2.60
3.25
3.90
4.55
5.20
5.85
6.50
Output Current (Amps)
Output Current (Amps)
Figure 1. 020FX Efficiency vs Output Current
Vin = 36 Vdc
Figure 2. 033FX Efficiency vs Output Current
Vin = 36 Vdc
AK60C-048L-050F06
Efficiency vs Output Current
Tc = Tc,max
87.5%
Vin = 48 Vdc
Vin = 75 Vdc
AK60C-048L-120F03
Efficiency vs Output Current
Tc = Tc,max
90.0%
87.5%
85.0%
82.5%
Vin = 48 Vdc
Vin = 75 Vdc
85.0%
82.5%
80.0%
80.0%
77.5%
77.5%
75.0%
75.0%
72.5%
72.5%
70.0%
70.0%
67.5%
65.0%
0.25
67.5%
65.0%
0.60
1.20
1.80
2.40
3.00
3.60
4.20
4.80
5.40
6.00
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
Output Current (Amps)
Output Current (Amps)
Figure 3. 050FX Efficiency vs Output Current
Vin = 36 Vdc
Figure 4. 120FX Efficiency vs Output Current
AK60C-048L-150F02
Efficiency vs Output Current
Tc = Tc,max
90.0%
87.5%
85.0%
82.5%
80.0%
77.5%
75.0%
72.5%
70.0%
67.5%
65.0%
0.20
Vin = 48 Vdc
Vin = 75 Vdc
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
Output Current (Amps)
Figure 5. 150FX Efficiency vs Output Current
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ASTEC POWER - Andover
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