ASTEC AA25N-048L-050S

Technical Reference Note
Doc #1981
TRN-AA25N-048L-050S
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-050S
Symbol
Parameter
36-75V in; 5V/5A 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
25
W
5.05
V
V
V
5.0
A
A
A
50
mV
mV
mV
From 10% to 100% of rated
output current
0.50
%VO1
%V02
%V03
VImin to VImax
IO = IO typ
0.1
%V01
%V02
%V03
4.95
5.0
0.5
35
Current limit
IO1 lim
IO2 lim
IO3 lim
6
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
81
%VO nom/°C
pF
83.5
%
6.23.98
1 of 4
Electrical Specifications - AA25N-048L-050S
Symbol
Parameter
36-75 Vin; 5V/ 5A
Conditions
Min
Typ
Doc # 1981
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
1.5%
150µS
%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
5
0
4.75
5.0
V
V
5.5
V
Environmental
Tbaseplate
Overtemperaure shutdown
°C
105
Operating temp exceeds max rating
Notes:
1. Converter employs and undervoltage lockout circuit. VO =0 when Vin < 32Vdc
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
+5V Out
+5V 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
Electrical Specifications - AA25N-048L-050S
36-75 Vin; 5V/ 5A
Efficiency
Doc # 1981
Output Power Derating
(Typ)
Figure 2
Figure 3
30
Vin= 36.0
Vin= 48.0
Vin= 75.0
Efficiency vs Load Current
AA25N-048L-050S
86.0%
25
84.0%
82.0%
20
Output Power (Watts)
80.0%
Efficiency
78.0%
76.0%
74.0%
72.0%
70.0%
68.0%
Ambient air is measured 1/2" from unit.
O
Max. baseplate @ F.L. = 105 C
15
10
5
66.0%
64.0%
62.0%
0.50
1.00
1.50
2.00
2.50
3.00
Load Current - Amps
3.50
4.00
4.50
0
5.00
Output Regulation vs. Temperature and
Loading (Typ)
Figure 4
5.050
-10
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= 75.0
Line And Load Regulation
AA20M-048L-050S @ 20 Degrees C
5.050
5.038
5.025
5.025
5.013
Output Voltage - Volts
Output Voltage - Volts
-20
(20°C Typ)
5.038
5.000
4.988
4.975
5.013
5.000
4.988
4.975
4.963
4.950
-30
Output line and load regulaton
Min Load
Nom Load
Max Load
Output Voltage VS. Temperature
AA25N-048L-050S
-40
4.963
-60
-40
-20
0
20
Ambient Temperature - Degrees C
Technical Reference Note
40
60
80
4.950
0.5
1.0
1.5
2.0
2.5
3.0
Load Current - Amps
3.5
4.0
6.23.98
4.5
5.0
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Electrical Specifications - AA20M-048L-050S
36-75 Vin; 5V/ 5A
Doc # 1981
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
6.23.98
Technical Reference Note