ALO04Y48-6 [ASTEC]
AEO/ALO Single Output 8th Brick: Baseplate or Open-Frame Module; AEO / ALO单路输出8砖：底板或开放式框架模块
| 型号： | ALO04Y48-6 |
| 厂家： | 
Astec America, Inc |
| 描述： | AEO/ALO Single Output 8th Brick: Baseplate or Open-Frame Module |
| 文件： | 总26页 (文件大小：899K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
AEO/ALO Single Output 8th Brick: Baseplate or Open-Frame Module
The AEO_ALO04/12/20/25x48 series is Astec’s Low Current 8th Brick industry standard offering. Operating from an input
voltage range of 36V to 75V, the series provides 7 configured outputs starting from 1.2V all the way up to 12V. It delivers up
to 25A max current for 1.8V and lower voltages at impressive levels of efficiency. It provides tight regulation and exhibits
clean and monotonic output start up characteristics. The AEO_ALO series comes with industry standard features such as Input
UVLO; non-latching OCP, OVP and OTP; Output Trim; Differential Remote Sense pins. Both baseplate (AEO) and open
frame (ALO) construction are available as well as TH and SMT termination. With its wide operating temperature range of
-40°C to 85°C ambient, the converters are deployable into almost any environment.
Electrical Parameters
Input
Input Range
Input Surge
36-75 VDC
100V / 100ms
Control
Enable
TTL compatible
(Positive or Negative Logic Enable Options)
Output
Load Current
Up to 25A max (VO ≤ 1.8V)
Line/Load Regulation < 1% VO
Ripple and Noise
Output Voltage
Adjust Range
20mVP-P typical at 1.8V
Special Features
±10% VO
Transient Response 2% Typical deviation
50% to 75% step load
•
•
•
•
•
•
•
Industry Standard 8th Brick Footprint
Baseplate or Open frame construction
Low Ripple and Noise
250µs settling time (Typ)
Remote Sense
Over Current
Protection
+10%VO
Regulation to zero load
120% (Typ)
High Capacitive Load Start-up
Fixed Switching Frequency
Industry standard features: Input UVLO;
Enable; non-latching OVP, OCP and OTP;
Output Trim, Differential Remote Sense
Meets Basic Insulation
Over Voltage
Protection
130% (Typ)
Over Temperature
Protection
110 °C
•
Safety
Environmental Specifications
UL + cUL 60950, Recognized
EN60950 through TUV-PS
•
•
•
-40ºC to 85ºC Operating Temperature
-55ºC to 125ºC Storage Temperature
MTBF > 1 million hours
MODEL: AEO_ALO04/12/20/25x48 SERIES
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AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Electrical Specifications
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional
operation of the device is converter is not implied at these or any other conditions in excess of those given in the
operational section of the specs. Exposure to absolute maximum ratings for extended period can adversely affect
device reliability.
Parameter
Device
Symbol
Min
Typical
Max
Unit
Input Voltage
Continuous
All
Vin
-0.3
-
-
-
75
Vdc
Transient (100ms)
Vin trans
100
I/O Isolation
Input-to-Output
All
-
-
TA
TSTG
-
1500
-
Vdc
ºC
Operating Temperature1
Storage Temperature
Operating Humidity
Max Voltage at Enable Pin
Max Output Power
All
-40
-
-
-
-
-
-
-
-
-
-
-
85
All
-55
125
85
25
48.0
60.0
66.0
50.0
45.0
37.5
30.0
ºC
All
10
%
Vdc
W
All
-0.6
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
PO, MAX
-
-
-
-
-
-
-
INPUT SPECIFICATIONS
Parameter
Device
Symbol
Min
Typical
Max
Unit
Operating Input Voltage Range
Input Under-Voltage Lock-out
T_ON Threshold
All
VIN
36
48
75
Vdc
All
33
31
-
34
32
-
36
34
Vdc
A
T_OFF Threshold
Max Input Current2
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
Iinmax
1.7
-
-
2.3
-
-
2.4
-
-
1.9
-
-
1.8
-
-
1.6
1.4
Standing Loss
Vin = Vinnom
-
-
-
-
-
-
-
-
-
-
-
-
-
-
5.75
4.00
4.00
4.00
3.00
2.50
2.00
W
MODEL: AEO_ALO04/12/20/25x48 SERIES
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AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Electrical Specifications (continued)
INPUT SPECIFICATIONS
Parameter
Input Ripple Current3
Inrush Current
i2t
Device
All
All
Symbol
Min
Typical
10
0.01
Max
20
-
Unit
mAp-p
A2s
II1
-
-
OUTPUT SPECIFICATIONS
Parameter
Device
Symbol
VO, SET
Min
Typical
Max
Unit
Vdc
Output Voltage Set point
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
11.80
4.90
3.25
2.45
1.76
1.47
1.17
12.00
5.00
3.30
2.50
1.80
1.50
1.20
12.20
5.10
3.35
2.55
1.84
1.53
1.23
V
IN = VIN, MIN to VIN, MAX
IO = IO, MAX
Output Regulation
Line
All
-
-
-
-
0.1
0.1
0.2
0.5
%
VIN = VIN, MIN to VIN, MAX
Load
VIN = VIN, NOM
IO = IO, MIN to IO, MAX
Temp
-
-
0.5
1.0
4
VIN = VIN, NOM; IO = IO, MAX
Output Current4
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2))
IO
0
0
0
0
0
0
0
-
-
-
4
12
20
20
25
25
25
120
90
75
75
60
60
60
A
-
-
-
-
-
Output Ripple and Noise5
Peak-to-Peak
-
-
-
-
50
40
40
20
20
20
20
mVp-p
-
IO = IO, MAX; VIN =VIN, N OM
-
BWL = 20 MHz; TA =25oC
-
MODEL: AEO_ALO04/12/20/25x48 SERIES
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AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Device
Symbol
Min
Typical
Max
Unit
Output Current-limit Inception
VO = 90% VO, NOM; TA = 25ºC
VIN = VIN, NOM
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
All
IO, OCP
5.0
16.0
23.5
23.5
27.0
27.0
27.0
-
-
-
-
-
-
-
-
-
-
7.8
A
23.9
30.0
Non-latching / auto-recovery
30.0
48.0
48.0
48.0
External Load Capacitance
IO = IO, MAX , resistive load
CEXT
10,000
1,500
µF
B (12V0)
-
Capacitor ESR
4
-
mΩ
%
Efficiency
B (12V)
A (5.0V)
F (3.3V)
G (2.5V)
Y (1.8V)
M (1.5V)
K (1.2V)
92.0
92.0
90.0
89.0
88.5
87.0
85.0
93.0
93.0
91.0
90.0
90.0
88.5
87.0
94.0
94.0
93.0
92.0
91.0
90.5
88.0
η
η
η
η
η
η
η
VIN = VIN, NOM; IO = IO, MAX
TA = 25ºC
Output Over Voltage Protection
Non-latching / autorecovery
B (12V)
A (5.0V)
F (3.3V)
G (2.5V)
Y (1.8V)
M (1.5V)
K (1.2V)
AEO
VO, OVP
13.8
5.80
3.80
2.90
2.10
1.75
1.38
110
110
-
14.4
6.00
4.00
3.00
2.30
1.85
1.50
-
15.0
6.20
4.30
3.20
2.50
2.38
1.80
120
120
17
V
Over Temperature Protection
Input to Output Turn-On Delay
°C
ALO
-
All
-
-
-
ms
V
IN = VIN, NOM
5V, 12V
-
-
20
IO = IO, MAX
Enable to Output Turn-On Delay
All
-
-
-
-
-
-
17
20
ms
ms
V
IN = VIN, NOM
IO = IO, MAX
Output Voltage Rise Time
10% to 90% of VO
VIN = VIN, NOM
All
5V
-
-
3
4
9
11
16
520
10
110
3
-
-
-
-
IO = IO, MAX
12V
All
All
9
Switching Frequency
Output Voltage Remote Sensing
FSW
-
380
450
-
kHz
%VO
%VO
%Vo
-
Output Voltage Trim Range6
Output Voltage Overshoot
All
All
90
-
-
0
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 4 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Device
Symbol
Min
Typical
Max
Unit
Dynamic Response
di/dt = 0.1 A/µs
All
All
All
All
-
-
-
-
-
-
-
-
2
-
5
%
µs
%
µs
Peak Deviation
∆IO = 50% to 75% of Iomax
250
5
Settling Time
Vref = Vonom
2
-
Peak Deviation
∆IO = 50% to 25% of Iomax
250
Settling Time
Vref = Vonom
Output Enable ON/OFF
Open collector TTL compatible
Positive Enable: Mod-ON
Mod-OFF
All
All
-
-
2.95
-0.5
-
-
20
V
V
1.20
Negative Enable: Mod-ON
Mod-OFF
All
All
-
-
-0.5
-
-
1.20
20
V
V
2.95
Note: 1. Derating curves for both openframe and baseplate modules are based on derated component junction
temperatures of 120°C or less where applicable.
2. An input line fuse is recommended for use (e.g. Littlefuse type 314 – 4A max, 250V min or equivalent).
3. Refer to Figure 1 for Input Ripple Current test measurement setup.
4. Output derating applies at elevated temperature.
5. Refer to Figure 2 for output ripple measurement setup.
6. Refer to the output trim equations provided (Equations 1 and 2).
SAFETY AGENCY / MATERIAL RATING / ISOLATION
Parameter
Safety Approval
Device
All
UL/cUL 60950, 3rd Edition – Recognized
EN 60950 through TUV
UL94V-0
Material Flammability Rating
Parameter
All
Device
All
Symbol
Min
Typical
Max
Unit
Input to Output Capacitance
-
1000
-
pF
Ohms
-
Input to Output Resistance
Input to Output Insulation Type
All
All
-
-
TBD
Basic
-
-
MODEL: AEO_ALO04/12/20/25x48 SERIES
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AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Electrical Specifications (continued)
TO OSCILLOSCOPE
Vi(+)
Vi(-)
Ltest
12 uH
Cs 220 uF
33 uF
ESR < 0.7 OHM
@ 20 ºC, 100 kHz
BATTERY
ESR < 0.1 OHM
@ 20 ºC, 100 kHz
Measure input reflected-ripple current with a simulated source inductance (Ltest) of
12uH. Capacitor Cs offsets possible battery impedance. Measure current as shown
above.
Figure 1. Input Reflected Ripple Current Measurement Setup.
COPPER STRIP
Vo(+)
RESISTIVE
0.1 uF
10 uF
SCOPE
LOAD
Vo(-)
Use a 0.1µF @50V X7R ceramic capacitor (connected an inch away from the output
terminals of the UUT) and a 10µF @ 25V tantalum capacitor (2 inches away from
the output terminals of the UUT). Scope measurement should be made using a BNC
socket, positioned 3 inches away from output terminals of the converter.
Figure 2. Peak to Peak Output Noise Measurement Setup.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
SHEET 6 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Basic Operation and Features
INPUT UNDER VOLTAGE LOCKOUT
To prevent any instability to the converter, which may affect the end system, the converter have been designed to turn-on once
V
IN is in the voltage range of 33 to 36VDC. Likewise, it has also been programmed to turn-off when VIN drops down to 31 to
34VDC
OUTPUT VOLTAGE ADJUST/TRIM
The converter comes with a TRIM pin (PIN 6), which is used to adjust the output by as much as 90% to 110% of its set point.
This is achieved by connecting an external resistor as described below.
To INCREASE the output, external Radj_up resistor
-Vout
should be connected between TRIM PIN (Pin6) and
+SENSE PIN (Pin 7). Please refer to Equation (1) for the
required external resistance and output adjust
relationship.
-Vin
-Sense
Vadj
Rload
Enable
+Vin
Radj_up
+Sense
+Vout
Equation (1a): 1.5V to 12V
(
)
5.1× Vo × 100 + ∆%
=
set
510
∆%
R
−
− 10.2 ΚΩ
adj_up
1.225× ∆%
Figure 3. External resistor configuration to increase the outputs
Equation (1b): 1.2V
(
)
5.1× Vo × 100 + ∆%
=
set
510
∆%
R
−
− 10.2 ΚΩ
adj_up
0.6× ∆%
To DECREASE the output, external Radj_down resistor
should be connected between TRIM pin (Pin 6) and
-SENSE PIN (Pin 5). Please refer to Equation (2) for the
required external resistance and output adjust
relationship.
-Vout
-Vin
-Sense
Radj_down
Rload
Vadj
+Sense
+Vout
Enable
+Vin
Equation (2):
510
∆%
Radj_down
− 10.2 ⋅kΩ
Where: ∆% = percent change in output voltage
Figure 4. External resistor configuration to increase the outputs
MODEL: AEO_ALO04/12/20/25x48 SERIES
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AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Basic Operation and Features (continued)
OUTPUT ENABLE
The converter comes with an Enable pin (PIN 2), which is primarily used to turn ON/OFF the converter. Both a Positive (no
“N” suffix required) and a Negative (suffix “N” required) Enable Logic options are being offered. Please refer to Table 2 for
the Part Numbering Scheme.
For Positive Enable, the converter is turned on when the Enable pin is at logic HIGH or left open. The unit turns off when the
Enable pin is at logic LOW or directly connected to -VIN. On the other hand, the Negative Enable version turns unit on when
the Enable pin is at logic LOW or directly connected to -VIN. The unit turns off when the Enable pin is at Logic HIGH.
OUTPUT OVER VOLTAGE PROTECTION (OVP)
The Over Voltage Protection circuit is non-latching - auto recovery mode. The output of the converter is terminated under an
OVP fault condition (Vo > OVP threshold). The converter will attempt to restart until the fault is removed. There is a 100ms
lockout period between restart attempts.
OVER CURRENT PROTECTION (OCP)
The Over Current Protection is non-latching - auto recovery mode. The converter shuts down once the output current reaches
the OCP range. The converter will attempt to restart until the fault is removed. There is a 100ms lockout period between restart
attempts.
OVER TEMPERATURE PROTECTION (OTP)
The Over Temperature Protection circuit will shutdown the converter once the average PCB temperature (See Figure 62B for
OTP reference sense point) reaches the OTP range. This feature prevents the unit from overheating and consequently going
into thermal runaway, which may further damage the converter and the end system. Such overheating may be an effect of
operation outside the given power thermal derating conditions. Restart is possible once the temperature of the sensed location
drops to less than 110°C.
REMOTE SENSE
The remote sense pins can be used to compensate for any voltage drops (per indicated max limits) that may occur along the
connection between the output pins to the load. Pin 7 (+Sense) and Pin 5 (-Sense) should be connected to Pin 8 (+Vout) and
Pin 4 (Return) respectively at the point where regulation is desired. The combination of remote sense and trim adjust cannot
exceed 110% of VO. When output voltage is trimmed up (through remote sensing and/or trim pin), output current must be
derated and maximum output power must not be exceeded.
MODEL: AEO_ALO04/12/20/25x48 SERIES
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AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
12V @ 4A
Power Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
7
6
5
4
3
2
1
0
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
0
1
2
3
4
0
1
2
3
4
Output Current [A]
Output Current [A]
Figure 5. Efficiency vs. Load Current at IO = Full Load,
TA = 25°C (ambient temperature).
Figure 6. Power Dissipation vs. Load Current at
IO = Full Load, TA = 25°C (ambient temperature).
Figure 7. 12VOUT Startup Characteristic at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
Figure 8. 12VOUT Ripple Waveform at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 9 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
12V @ 4A (continued)
Figure 9. Transient Response at TA = 25°C, 12VOUT
Figure 10. Transient Response at TA = 25°C, 12VOUT
Deviation (Hi-Lo).
Deviation (Lo-Hi).
AEO04B48N @ 48Vin
ALO04B48N @ 48Vin
4
4
3
2
3
2
400 LFM
300LFM
0LFM
100LFM
1
200 LFM
100 LFM
0 LFM
1
0
200LFM
300LFM
400LFM
0
25
40
55
70
85
25
40
55
70
85
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 11. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
Figure 12. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 10 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
5V @ 12A
Power Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
6
5
4
3
2
1
0
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
0
2
4
6
8
10
12
0
2
4
6
8
10
12
Output Current [A]
Output Current [A]
Figure 13. Efficiency vs. Load Current at IO = Full
Load, TA = 25°C (ambient temperature).
Figure 14. Power Dissipation vs. Load Current at
IO = Full Load, TA = 25°C (ambient temperature).
Figure 15. 5VOUT Startup Characteristic at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
Figure 16. 5VOUT Ripple Waveform at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
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AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
5V @ 12A (continued)
Figure 17. Transient Response at TA = 25°C, 5VOUT
Figure 18. Transient Response at TA = 25°C, 5VOUT
Deviation (Hi-Lo).
Deviation (Lo-Hi).
ALO12A48N @ 48Vin
AEO12A48N @ 48Vin
12
12
10
8
10
8
6
6
4
4
2
0
0 LFM
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
100 LFM
200 LFM
300 LFM
400 LFM
2
0
25
40
55
70
85
25
40
55
70
85
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 19. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
Figure 20. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 12 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
3.3V @ 20A
Power Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
6
4
2
0
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
0
4
8
12
16
20
0
4
8
12
16
20
Output Current [A]
Output Current [A]
Figure 21. Efficiency vs. Load Current at IO = Full
Load, TA = 25°C (ambient temperature).
Figure 22. Power Dissipation vs. Load Current at
IO = Full Load, TA = 25°C (ambient temperature).
Figure 23. 3.3VOUT Startup Characteristic at VIN
48Vdc, IO = Full Load, TA = 25°C.
=
Figure 24. 3.3VOUT Ripple Waveform at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
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AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
3.3V @ 20A (continued)
Figure 25. Transient Response at TA = 25°C, 3.3VOUT
Figure 26. Transient Response at TA = 25°C, 3.3VOUT
Deviation (Hi-Lo).
Deviation (Lo-Hi).
AEO20F48N @ 48 Vin
ALO20F48N @ 48 Vin
20
20
16
12
8
16
12
8
0 LFM
0 LFM
100 LFM
10 0 L F M
4
0
200 LFM
300 LFM
400 LFM
4
0
200 LFM
300 LFM
400 LFM
25
35
45
55
65
75
85
25
35
45
55
65
75
85
Ambient Temperature (ºC)
Ambient Temperature (ºC)
Figure 27. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
Figure 28. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 14 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
2.5V @ 20A
Power Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
7
6
5
4
3
2
1
0
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
0
5
10
15
20
0
5
10
15
20
Output Current [A]
Output Current [A]
Figure 29. Efficiency vs. Load Current at IO = Full
Load, TA = 25°C (ambient temperature).
Figure 30. Power Dissipation vs. Load Current at
IO = Full Load, TA = 25°C (ambient temperature).
Figure 31. 2.5VOUT Startup Characteristic at VIN
48Vdc, IO = Full Load, TA = 25°C.
=
Figure 32. 2.5VOUT Ripple Waveform at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 15 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
2.5V @ 20A (continued)
Figure 33. Transient Response at TA = 25°C, 2.5VOUT
Figure 34. Transient Response at TA = 25°C, 2.5VOUT
Deviation (Hi-Lo).
Deviation (Lo-Hi).
ALO20G48N @ 48Vin
AEO20G48N @ 48Vin
20
20
15
10
15
10
400 LFM
300 LFM
400 LFM
5
5
300 LFM
200 LFM
200 LFM
10 0 L F M
0 LFM
100 LFM
0 LFM
0
0
25
40
55
70
85
25
40
55
70
85
Ambient Temperature (oC)
Ambient Temperature (oC)
Figure 35. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
Figure 36. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 16 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.8V @ 25A
Power Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
7
6
5
4
3
2
1
0
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
0
5
10
15
20
25
0
5
10
15
20
25
Output Current [A]
Output Current [A]
Figure 37. Efficiency vs. Load Current at IO = Full
Load, TA = 25°C (ambient temperature).
Figure 38. Power Dissipation vs. Load Current at
IO = Full Load, TA = 25°C (ambient temperature).
Figure 39. 1.8VOUT Startup Characteristic at VIN
48Vdc, IO = Full Load, TA = 25°C.
=
Figure 40. 1.8VOUT Ripple Waveform at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 17 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.8V @ 25A (continued)
Figure 41. Transient Response at TA = 25°C, 1.8VOUT
Figure 42. Transient Response at TA = 25°C, 1.8VOUT
Deviation (Hi-Lo).
Deviation (Lo-Hi).
ALO25Y48N @ 48Vin
AEO25Y48N @ 48Vin
25
25
20
15
10
20
15
10
000 LFM
100 LFM
000 LFM
100 LFM
5
0
5
0
200 LFM
300 LFM
400 LFM
200 LFM
300 LFM
400 LFM
25
40
55
70
85
25
40
55
70
85
Ambient Temperature (°C)
Ambient Temperature (°C)
Figure 43. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
Figure 44. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 18 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.5V @ 25A
Power Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
7
6
5
4
3
2
1
0
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
0
5
10
15
20
25
0
5
10
15
20
25
Output Current [A]
Output Current [A]
Figure 45. Efficiency vs. Load Current at IO = Full
Load, TA = 25°C (ambient temperature).
Figure 46. Power Dissipation vs. Load Current at
IO = Full Load, TA = 25°C (ambient temperature).
Figure 47. 1.5VOUT Startup Characteristic at VIN
48Vdc, IO = Full Load, TA = 25°C.
=
Figure 48. 1.5VOUT Ripple Waveform at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 19 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.5V @ 25A (continued)
Figure 49. Transient Response at TA = 25°C, 1.5VOUT
Figure 50. Transient Response at TA = 25°C, 1.5VOUT
Deviation (Hi-Lo).
Deviation (Lo-Hi).
ALO25M48N @ 48Vin
AEO25M48N @ 48Vin
25
25
20
15
10
20
15
10
400 LFM
300 LFM
400 LFM
300 LFM
5
0
200 LFM
100 LFM
0 LFM
5
0
200 LFM
10 0 L F M
0 LFM
25
40
55
70
85
25
40
55
70
85
Ambient Temperature (oC)
Ambient Temperature (oC)
Figure 51. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
Figure 52. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 20 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.2V @ 25A
Power Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
7
6
5
4
3
2
1
0
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
0
5
10
15
20
25
0
5
10
15
20
25
Output Current [A]
Output Current [A]
Figure 53. Efficiency vs. Load Current at IO = Full
Load, TA = 25°C (ambient temperature).
Figure 54. Power Dissipation vs. Load Current at
IO = Full Load, TA = 25°C (ambient temperature).
Figure 55. 1.2VOUT Startup Characteristic at VIN
48Vdc, IO = Full Load, TA = 25°C.
=
Figure 56. 1.2 VOUT Ripple Waveform at VIN = 48Vdc,
IO = Full Load, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 21 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.2 V @ 25A (continued)
Figure 57. Transient Response at TA = 25°C, 1.2VOUT
Figure 58. Transient Response at TA = 25°C, 1.2VOUT
Deviation (Hi-Lo).
Deviation (Lo-Hi).
ALO25K48N @ 48Vin
AEO25K48N @48Vin
25
25
20
15
10
20
15
10
400 LFM
300 LFM
400 LFM
300 LFM
200 LFM
5
5
0
200 LFM
100 LFM
0 LFM
100 LFM
0 LFM
0
25
40
55
70
85
25
40
55
70
85
Ambient Temperature (oC)
Ambient Temperature (oC)
Figure 59. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
Figure 60. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 22 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Input Filter for FCC Class B Conducted Noise
A reference design for an input filter that can provide FCC Class B conducted noise levels is shown below (See Figure 61).
Two common mode connected inductors are used in the circuit along with balanced bypass capacitors to shunt common mode
currents into the ground plane. Shunting noise current back to the converter reduces the amount of energy reaching the input
LISN for measurement.
The application circuit shown has an earth ground (frame ground) connected to the converter output (-) terminal. Such a
configuration is common practice to accommodate safety agency requirements. Grounding an output terminal results in much
higher conducted emissions as measured at the input LISN because a hard path for common mode current back to the LISN is
created by the frame ground. “Floating” loads generally result in much lower measured emissions. The electrical equivalent of
a floating load, for EMI measurement purposes, can be created by grounding the converter output (load) through a suitably
sized inductor(s) while maintaining the necessary safety bonding.
FILTER
PARTS LIST
CKT CODE DESCRIPTION
CTX01-15091
Common
Cooper Electronic
Mode Choke
Technologies
X-Cap
Y-Cap
Cin
0.47 µF X 4pcs
22 nF X 4 pcs
220µF X 1pc
Figure 61: Class B Filter Circuit
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
SHEET 23 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Mechanical Specifications
Parameter
Dimension
Device
Symbol
Min
Typ
Max
Unit
All
L
W
H
H
-
-
-
-
2.30 [58.42]
-
in [ mm ]
in [ mm ]
in [ mm ]
0.90 [22.90]
-
AEO
ALO
-
-
0.40 [10.1]
0.32 [8.2]
Weight
AEO
ALO
-
-
34.02 [1.2]
22.68 [0.8]
-
-
g [oz]
g [oz]
PIN ASSIGNMENT
1
2
3
4
+VIN
5
6
7
8
-SENSE
ENABLE
-VIN
TRIM
+SENSE
+Vo
-Vo
2.30
[58.4]
2.30
[58.4]
+ Output
+ Vin
+ Output
+ Sense
Trim
-Sense
-Output
+ Vin
0.90
+ Sense
Trim
0.90
[22.9]
E
E
[22.9]
-Sense
-Output
- Vin
- Vin
PIN SIDE DOWN
PIN SIDE DOWN
0.32
[8.2]
0.15
[3.9]
0.31
[7.9]
0.15
[3.8]
0.15
[3.8]
2.19
[55.5]
0.45
[11.4]
0.30
[7.6]
0.30
[7.6]
2.00
[50.8]
0.15
[3.8]
0.15
[3.8]
0.45
[11.4]
0.45
[11.4]
0.45
[11.4]
0.60
[15.2]
0.75
[19.0]
0.60
[15.2]
0.75
[19.0]
0.75
[19.1]
0.75
[19.1]
THRU-HOLE
SURFACE MOUNT
Figure 62A. ALO (Openframe) Mechanical outline.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 24 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Mechanical Specifications (continued)
2.30
2.30
[58.4]
[58.4]
+ Output
+ Sense
Trim
-Sense
-Output
+ Vin
E
+ Output
+ Sense
Trim
-Sense
-Output
+ Vin
0.90
E
0.90
[22.9]
[22.9]
- Vin
- Vin
PIN SIDE DOWN
OTP Reference Sense
0.15
[3.9]
PIN SIDE DOWN
0.40
[10.1]
0.23
[5.8]
Points: Vicinity of Pin 2
(Enable Pin)
0.39
[9.8]
0.15
[3.8]
0.15
[3.8]
2.00
[50.8]
0.30
[7.6]
0.30
[7.6]
2.19
[55.5]
0.15
[3.8]
0.15
[3.8]
0.45
[11.4]
0.45
[11.4]
0.45
[11.4]
0.45
[11.4]
0.60
[15.2]
0.60
[15.2]
0.75
[19.0]
0.75
[19.0]
0.75
[19.1]
0.75
[19.1]
THRU-HOLE
SURFACE MOUNT
Figure 62B. (Baseplate) Mechanical Outline
Figure 63. Recommended Pad layout for SMT (Suffix “S”) version.
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 25 OF 26
AUGUST 25, 2005 - REVISION G
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
RECOMMENDED REFLOW PROFILE
SOLDERING CONSIDERATIONS
240
220
200
180
160
140
120
100
80
The AEO (baseplate) series converters are compatible
with standard wave soldering techniques. When wave
soldering, the converter pins should be preheated for
20-30 seconds at 110°C and wave soldered at 260°C
for less than 10 seconds.
°°
°
°
REFLOW
ZONE
< 80 sec
When hand soldering, the iron temperature should be
maintained at 425°C and applied to the converter pins
for less than 5 seconds. Longer exposure can cause
internal damage to the converter. Cleaning can be
performed with cleaning solvent IPA or with water.
120 - 180 sec
PRE-HEAT ZONE
60
40
20
°
0
For SMT terminated modules, refer to Figure 64 for
the recommended reflow profile.
0
30
60
90
120
150
180
210
240
270
300
TIME (seconds)
Figure 64. Recommended reflow profile for SMT modules.
TABLE 2: PART NUMBERING SCHEME
O/P VOLTAGE
CONSTRUCTION
O/P CURRENT
Vin
Enable
PIN LENGTH
TERMINATION
A
w
O
xx
y
48
N
-
6
S
L = Open frame
E = Baseplate
04 = 4A
B =12V
A =5V
N = Negative
6 = 3.7mm
blank = 5mm
default
S = SMT Termination
Blank = thru-hole
12 = 12A
20 = 20A
20 = 20A
25 = 25A
25 = 25A
25 = 25A
Blank = Positive
F =3.3V
G =2.5V
Y =1.8V
M =1.5V
K =1.2V
Note: 1) For Through Hole termination:
- Std pin length is 5mm nominal (min: 0.189 [4.8]; max: 0.205 [5.2] / in [mm])
- “-6” option is 3.7mm nominal (min: 0.137 [3.5]; max: 0.152 [3.9] / in [mm])
- Pins 4&8 diameter: ∅ = 0.062 [1.57], others: ∅ = 0.04 [1.0] (6X)
Please call 1-888-41-ASTEC for further inquiries
or visit us at www.astecpower.com
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 26 OF 26
AUGUST 25, 2005 - REVISION G
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