ASTEC AA25N-048L-033S

Technical Reference Note
Doc #1980
TRN-AA25N-048L-033S
Electrical characteristics are guaranteed over the ambient temperature range (-40 to 60°C), for the full range of
input voltage (VI), and for the full load range (I0 min to I 0 rated) unless otherwise noted.
VI , Vo and I0 are actual operating conditions, Io rated is nominal rating.
Electrical Specifications - AA25N-048L-033S
Symbol
Parameter
36-75V in; 3.3V / 6A out
Conditions
Min
Typ
Max
Units
36
48
75
V
Input Characteristics
VI
Input voltage
PIL
No load input power
VI=VInom
IIN
Input current Per ETS300-132.2
VIN<36Vdc (See note 1)
CIN
Input capacitance (internal)
II
Input ripple current
0.25
W
150
VI=Vnom, Io=Io rated
%IIn at Vnom
1.8
µF
10
mA p-p
Output Characteristics
PO max
Total output power
VO1 nom
VO2 nom
VO3 nom
Nominal (factory set) output voltage
Output 1
Output 2
Output 3
Rated output current
Output 1
Output 2
Output 3
TAmbient= 60°C
IO1 rated
IO2 rated
IO3 rated
Noise and ripple
Output 1
Output 2
Output 3
Pk-pk, 20MHz bandwidth
with a 0.1 µF ceramic capacitor
connected across +V out and
-V out.
Load regulation
VO1
VO2
VO3
Line regulation
VO1
VO2
VO3
19.8
W
3.333
V
V
V
6.0
A
A
A
50
mV
mV
mV
From 10% to 100% of rated
output current
0.75
%VO1
%V02
%V03
VImin to VImax
IO = IO typ
0.1
%V01
%V02
%V03
3.267
3.3
0.6
35
Current limit
IO1 lim
IO2 lim
IO3 lim
8.3
Temperature coefficient
Per °C baseplate temperature
±0.02
Input - Output Capacitance
η
Efficiency
Technical Reference Note
A
A
A
100
VI = 48V, IO = IO rated
79
%VO nom/°C
pF
80.5
%
6.23.98
1 OF 4
Electrical Specifications - AA25N-048L-033S
Symbol
Parameter
36-75 Vin; 3.3 / 6A
Conditions
Min
Typ
DOC# 1980
Max
Units
Output Characteristics - continued
ton
Turn-on time
VI = 0 to VInom
75
mS
VI = 0 to VI min
100
mS
VI = 0 to VI max
50
mS
2%
250µS
%VO1 nom
Transient response (VO1 only)
positive or negative step
IO = 25 to 75% IO [email protected] 15 µs/A
Input-output isolation
resistance
1500 VDC
Input-case isolation
resistance
N/A
Output-case isolation
resistance
1500 VDC
Isolation
50
M Ohm
M Ohm
50
M Ohm
Control Signals
VOut
Output Voltage
2.5 < Vc <5.5 or open circuit
VC < 0.8V
V adj
Output Voltage
External resistor attached
3.3
0
3.14
3.3
V
V
3.63
V
Environmental
Tbaseplate
Overtemperaure shutdown
Operating temp exceeds max rating
105
Figure 1
.52
(13.2)
Pin Assignment
.015 (.38)
MIN.
.040 (1.01)
DIA. TYP.
.20
(5.0)
Single Output
2.0
(50.8)
1.80
(45.72)
.10
(2.54)
.40
(10.16)
5
.90
(22.86)
2.00
(50.8)
.40
(10.16)
6
2.00
(50.8)
.40
(10.16)
1
1.
2.
3.
4.
5.
6.
7.
8.
+Vin
-Vin
No pin
Enable
No pin
+3.3V Out
+3.3V Rtn
Trim
.40
(10.16)
2
7
3
.40
(10.16)
4
8
Bottom View
All dimensions are inches (mm)
2 OF 4
6.23.98
Technical Reference Note
°C
Electrical Specifications - AA25N-048L-033S
36-75 Vin; 3.3 / 6A
Efficiency
DOC# 1980
Output Power Derating
(Typ)
Figure 2
Figure 3
Derating Curve
Vin= 36.0
Vin= 48.0
Vin= 75.5
Efficiency vs Load Current
AA20M-048L-033S
84.0%
30
82.0%
25
80.0%
20
Output Power (Watts)
Efficiency
78.0%
76.0%
74.0%
72.0%
70.0%
68.0%
10
66.0%
5
64.0%
62.0%
0.60
1.20
1.80
2.40
3.00
3.60
4.20
Load Current - Amps
4.80
5.40
6.00
Output Regulation vs. Temperature and
Loading (Typ)
Figure 4
0
-40
3.317
Output Voltage - Volts
3.317
3.292
3.284
0
10
20
30
40
50
60
Ambient Temperature (Deg. Celsius)
70
80
90
100
110
Figure 5
Vin= 36.0
Vin= 48.0
Vin= 75.5
3.308
3.300
3.292
3.284
3.275
3.275
3.267
-60
-10
Line And Load Regulation
[email protected] 20 Degrees C
3.333
3.325
3.300
-20
(20°C Typ)
3.325
3.308
-30
Output line and load regulaton
Min Load
Nom Load
Max Load
Output Voltage VS. Temperature
AA25N-048L-033S
3.333
Output Voltage - Volts
Ambient air is measured 1/2" from unit.
Max. baseplate @ F.L. = 105OC
15
-40
-20
0
20
40
Ambient Temperature - Degrees C
Technical Reference Note
60
80
3.267
0.6
1.2
1.8
2.4
3.0
3.6
4.2
Load Current - Amps
4.8
5.4
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6.0
6.6
3 OF 4
Electrical Specifications - AA25N-048L-033S
36-75 Vin; 3.3 / 6A
DOC# 1980
Turn on Characteristics
(Typ)
Figure 6
Output Trim Methods
Figure 7
Output voltage
decrease
4 OF 4
Output voltage
increase
Adjust output
voltage
5
5
5
6
6
6
7
7
7
8
8
8
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Technical Reference Note