Astec ALO20F48NS Aeo/alo single output 8th brick: baseplate or open-frame module Datasheet

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
Special Features
•
•
•
•
•
•
•
•
th
Industry Standard 8 Brick Footprint
Baseplate or Open frame construction
Low Ripple and Noise
Regulation to zero load
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
Load Current
Line/Load Regulation
Ripple and Noise
Output Voltage
Adjust Range
Transient Response
Remote Sense
Over Current
Protection
Over Voltage
Protection
Over Temperature
Protection
Up to 25A max (VO ≤ 1.8V)
< 1% VO
20mVP-P typical at 1.8V
±10% VO
2% Typical deviation
50% to 75% step load
250µs settling time (Typ)
+10%VO
120% (Typ)
130% (Typ)
110 °C
Environmental Specifications
Safety
•
•
•
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
AUGUST 25, 2005 - REVISION G
SHEET 1 OF 26
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
Input Voltage
Continuous
Transient (100ms)
I/O Isolation
Input-to-Output
1
Operating Temperature
Storage Temperature
Operating Humidity
Max Voltage at Enable Pin
Max Output Power
Device
Symbol
Min
Typical
Max
Unit
All
Vin
Vin trans
-0.3
-
-
75
100
Vdc
All
TA
TSTG
-
-
PO, MAX
1500
-40
-55
10
-0.6
-
-
85
125
85
25
48.0
60.0
66.0
50.0
45.0
37.5
30.0
Vdc
ºC
ºC
%
Vdc
W
Symbol
VIN
Min
36
Typical
48
Max
75
Unit
Vdc
33
31
-
34
32
-
Vdc
-
-
36
34
1.7
2.3
2.4
1.9
1.8
1.6
1.4
5.75
4.00
4.00
4.00
3.00
2.50
2.00
All
All
All
All
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
INPUT SPECIFICATIONS
Parameter
Operating Input Voltage Range
Input Under-Voltage Lock-out
T_ON Threshold
T_OFF Threshold
Max Input Current2
Standing Loss
Vin = Vinnom
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
Device
All
All
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
A
W
SHEET 2 OF 26
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
II1
Min
-
Typical
10
0.01
Max
20
-
Unit
mAp-p
A 2s
Device
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
Symbol
VO, SET
Min
11.80
4.90
3.25
2.45
1.76
1.47
1.17
Typical
12.00
5.00
3.30
2.50
1.80
1.50
1.20
Max
12.20
5.10
3.35
2.55
1.84
1.53
1.23
Unit
Vdc
All
-
-
0.1
0.2
%
-
-
0.1
0.5
-
-
0.5
1.0
IO
0
0
0
0
0
0
0
-
50
40
40
20
20
20
20
4
12
20
20
25
25
25
120
90
75
75
60
60
60
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Set point
VIN = VIN, MIN to VIN, MAX
IO = IO, MAX
Output Regulation
Line
VIN = VIN, MIN to VIN, MAX
Load
VIN = VIN, NOM
IO = IO, MIN to IO, MAX
Temp
VIN = VIN, NOM; IO = IO, MAX4
Output Current4
Output Ripple and Noise5
Peak-to-Peak
IO = IO, MAX; VIN =VIN, N OM
BWL = 20 MHz; TA =25oC
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
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))
-
A
mVp-p
SHEET 3 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Output Current-limit Inception
VO = 90% VO, NOM; TA = 25ºC
VIN = VIN, NOM
Non-latching / auto-recovery
External Load Capacitance
IO = IO, MAX , resistive load
Capacitor ESR
Efficiency
VIN = VIN, NOM; IO = IO, MAX
TA = 25ºC
Output Over Voltage Protection
Non-latching / autorecovery
Over Temperature Protection
Input to Output Turn-On Delay
VIN = VIN, NOM
IO = IO, MAX
Enable to Output Turn-On Delay
VIN = VIN, NOM
IO = IO, MAX
Output Voltage Rise Time
10% to 90% of VO
VIN = VIN, NOM
IO = IO, MAX
Switching Frequency
Output Voltage Remote Sensing
Output Voltage Trim Range6
Output Voltage Overshoot
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
Device
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
All
B (12V0)
Symbol
IO, OCP
CEXT
Min
5.0
16.0
23.5
23.5
27.0
27.0
27.0
-
Typical
-
Max
7.8
23.9
30.0
30.0
48.0
48.0
48.0
10,000
1,500
Unit
A
4
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
mΩ
%
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
20
V
µF
B (12V)
A (5.0V)
F (3.3V)
G (2.5V)
Y (1.8V)
M (1.5V)
K (1.2V)
η
η
η
η
η
η
η
B (12V)
A (5.0V)
F (3.3V)
G (2.5V)
Y (1.8V)
M (1.5V)
K (1.2V)
AEO
ALO
All
5V, 12V
VO, OVP
-
13.8
5.80
3.80
2.90
2.10
1.75
1.38
110
110
-
All
-
-
-
17
20
ms
All
5V
12V
All
All
All
All
-
380
90
-
3
4
9
450
-
9
11
16
520
10
110
3
ms
FSW
-
0
°C
ms
kHz
%VO
%VO
%Vo
SHEET 4 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Dynamic Response
di/dt = 0.1 A/µs
Device
Symbol
Peak Deviation
∆IO = 50% to 75% of Iomax
All
-
Settling Time
Vref = Vonom
All
Peak Deviation
∆IO = 50% to 25% of Iomax
Min
Typical
Max
Unit
-
2
5
%
-
-
-
250
µs
All
-
-
2
5
%
Settling Time
Vref = Vonom
Output Enable ON/OFF
Open collector TTL compatible
All
-
-
-
250
µs
Positive Enable: Mod-ON
Mod-OFF
All
All
-
2.95
-0.5
-
20
1.20
V
V
Negative Enable: Mod-ON
Mod-OFF
All
All
-
-0.5
2.95
-
1.20
20
V
V
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
Material Flammability Rating
Parameter
Input to Output Capacitance
Input to Output Resistance
Input to Output Insulation Type
All
Device
All
All
All
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
UL/cUL 60950, 3rd Edition – Recognized
EN 60950 through TUV
UL94V-0
Symbol
Min
Typical
Max
1000
TBD
Basic
-
Unit
pF
Ohms
-
SHEET 5 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Electrical Specifications (continued)
TO OSCILLOSCOPE
Vi(+)
Ltest
12 uH
BATTERY
Cs 220 uF
ESR < 0.1 OHM
@ 20 ºC, 100 kHz
33 uF
ESR < 0.7 OHM
@ 20 ºC, 100 kHz
Vi(-)
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(+)
0.1 uF
10 uF SCOPE
RESISTIVE
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
VIN 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
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
-Vout
-Sense
Enable
Rload
Vadj
Radj_up
+Sense
Equation (1a): 1.5V to 12V
Radj_up =
 5.1 × Voset × ( 100 + ∆%) 510


−
− 10.2
∆%
1.225 × ∆%


+Vin
+Vout
ΚΩ
Figure 3. External resistor configuration to increase the outputs
Equation (1b): 1.2V
Radj_up =
 5.1 × Voset × ( 100 + ∆%) 510


−
− 10.2
∆%
0.6 × ∆%


ΚΩ
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.
-Vin
-Sense
Radj_down
Enable
Equation (2):
Radj_down
-Vout
Vadj
Rload
+Sense
 510 − 10.2 ⋅ kΩ

 ∆%

Where: ∆% = percent change in output voltage
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
+Vin
+Vout
Figure 4. External resistor configuration to increase the outputs
SHEET 7 OF 26
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
AUGUST 25, 2005 - REVISION G
SHEET 8 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
12V @ 4A
Pow er Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
90%
7
Power Dissipation [W]
95%
Efficiency [%]
85%
80%
75%
70%
65%
Vin = 36Vdc
Vin = 48Vdc
60%
6
5
4
3
2
Vin = 36Vdc
Vin = 48Vdc
1
Vin = 75Vdc
Vin = 75Vdc
0
55%
0
1
2
3
Output Current [A]
4
0
1
2
Output Current [A]
3
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
AUGUST 25, 2005 - REVISION G
4
SHEET 9 OF 26
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
Deviation (Hi-Lo).
Figure 10. Transient Response at TA = 25°C, 12VOUT
Deviation (Lo-Hi).
AEO04B48N @ 48Vin
4
3
3
Output Current (A)
Output Current (A)
ALO04B48N @ 48Vin
4
2
0LFM
100LFM
200LFM
300LFM
400LFM
1
2
400 LFM
300LFM
200 LFM
100 LFM
0 LFM
1
0
0
25
40
55
70
Am bient Tem perature (°C)
Figure 11. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
85
25
40
55
70
Am bient Tem perature (°C)
85
Figure 12. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
SHEET 10 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
5V @ 12A
Pow er Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
6
90%
5
Power Dissipation [W]
95%
Efficiency [%]
85%
80%
75%
70%
65%
Vin = 36Vdc
Vin = 48Vdc
60%
4
3
2
Vin = 36Vdc
1
Vin = 48Vdc
Vin = 75Vdc
Vin = 75Vdc
0
55%
0
2
4
6
8
Output Current [A]
10
12
0
2
4
6
8
Output Current [A]
10
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
AUGUST 25, 2005 - REVISION G
12
SHEET 11 OF 26
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
Deviation (Hi-Lo).
Figure 18. Transient Response at TA = 25°C, 5VOUT
Deviation (Lo-Hi).
ALO12A48N @ 48Vin
AEO12A48N @ 48Vin
12
12
10
Output Current (A)
Output Current (A)
10
8
6
4
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
2
0
8
6
4
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
2
0
25
40
55
70
Am bient Tem perature (°C)
Figure 19. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
85
25
40
55
70
Am bient Tem perature (°C)
85
Figure 20. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
SHEET 12 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
3.3V @ 20A
Pow er Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
95%
Power Dissipation [W]
90%
Efficiency [%]
85%
80%
75%
70%
65%
Vin = 36Vdc
Vin = 48Vdc
60%
6
4
2
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Vin = 75Vdc
0
55%
0
4
8
12
Output Current [A]
16
20
0
4
8
12
Output Current [A]
16
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
AUGUST 25, 2005 - REVISION G
20
SHEET 13 OF 26
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
Deviation (Hi-Lo).
Figure 26. Transient Response at TA = 25°C, 3.3VOUT
Deviation (Lo-Hi).
AEO20F48N @ 48 Vin
20
16
16
Output Current (A)
Output Current (A)
ALO20F48N @ 48 Vin
20
12
8
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
4
35
45
55
65
Am bient Tem perature (ºC)
75
Figure 27. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
8
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
4
0
0
25
12
85
25
35
45
55
65
75
85
Am bient Tem perature (ºC)
Figure 28. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
SHEET 14 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
2.5V @ 20A
Pow er Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
90%
7
Power Dissipation [W]
95%
Efficiency [%]
85%
80%
75%
70%
65%
Vin = 36Vdc
Vin = 48Vdc
60%
6
5
4
3
2
Vin = 36Vdc
Vin = 48Vdc
1
Vin = 75Vdc
Vin = 75Vdc
0
55%
0
5
10
15
Output Current [A]
20
0
5
10
15
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
AUGUST 25, 2005 - REVISION G
20
SHEET 15 OF 26
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
Deviation (Hi-Lo).
Figure 34. Transient Response at TA = 25°C, 2.5VOUT
Deviation (Lo-Hi).
AEO20G48N @ 48Vin
20
15
15
Output Current (A)
Output Current (A)
ALO20G48N @ 48Vin
20
10
400 LFM
300 LFM
200 LFM
100 LFM
0 LFM
5
10
400 LFM
300 LFM
200 LFM
100 LFM
0 LFM
5
0
0
25
40
55
70
Am bient Tem perature (oC)
Figure 35. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
85
25
40
55
70
Am bient Tem perature (oC)
85
Figure 36. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
SHEET 16 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.8V @ 25A
Pow er Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
90%
7
Power Dissipation [W]
95%
Efficiency [%]
85%
80%
75%
70%
65%
Vin = 36Vdc
Vin = 48Vdc
60%
6
5
4
3
2
Vin = 36Vdc
Vin = 48Vdc
1
Vin = 75Vdc
Vin = 75Vdc
0
55%
0
5
10
15
Output Current [A]
20
25
0
5
10
15
Output Current [A]
20
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
AUGUST 25, 2005 - REVISION G
25
SHEET 17 OF 26
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
Deviation (Hi-Lo).
Figure 42. Transient Response at TA = 25°C, 1.8VOUT
Deviation (Lo-Hi).
AEO25Y48N @ 48Vin
25
20
20
Output Current (A)
Output Current (A)
ALO25Y48N @ 48Vin
25
15
10
000 LFM
100 LFM
200 LFM
300 LFM
400 LFM
5
15
10
000 LFM
100 LFM
200 LFM
300 LFM
400 LFM
5
0
0
25
40
55
70
Am bient Tem perature (°C)
Figure 43. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
85
25
40
55
70
85
Am bient Tem perature (°C)
Figure 44. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
SHEET 18 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.5V @ 25A
Pow er Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
90%
7
Power Dissipation [W]
95%
Efficiency [%]
85%
80%
75%
70%
65%
Vin = 36Vdc
Vin = 48Vdc
60%
6
5
4
3
2
Vin = 36Vdc
Vin = 48Vdc
1
Vin = 75Vdc
Vin = 75Vdc
0
55%
0
5
10
15
Output Current [A]
20
25
0
5
10
15
Output Current [A]
20
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
AUGUST 25, 2005 - REVISION G
25
SHEET 19 OF 26
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
Deviation (Hi-Lo).
Figure 50. Transient Response at TA = 25°C, 1.5VOUT
Deviation (Lo-Hi).
AEO25M48N @ 48Vin
25
20
20
Output Current (A)
Output Current (A)
ALO25M48N @ 48Vin
25
15
10
400 LFM
300 LFM
200 LFM
100 LFM
0 LFM
5
15
10
400 LFM
300 LFM
200 LFM
100 LFM
0 LFM
5
0
0
25
40
55
70
o
Am bient Tem perature ( C)
Figure 51. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
85
25
40
55
70
o
Am bient Tem perature ( C)
85
Figure 52. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
SHEET 20 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Performance Curves
1.2V @ 25A
Pow er Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
8
90%
7
Power Dissipation [W]
95%
Efficiency [%]
85%
80%
75%
70%
65%
Vin = 36Vdc
Vin = 48Vdc
60%
6
5
4
3
2
Vin = 36Vdc
Vin = 48Vdc
1
Vin = 75Vdc
Vin = 75Vdc
0
55%
0
5
10
15
Output Current [A]
20
25
0
5
10
15
Output Current [A]
20
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
AUGUST 25, 2005 - REVISION G
25
SHEET 21 OF 26
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
Deviation (Hi-Lo).
Figure 58. Transient Response at TA = 25°C, 1.2VOUT
Deviation (Lo-Hi).
AEO25K48N @48Vin
25
20
20
Output Current (A)
Output Current (A)
ALO25K48N @ 48Vin
25
15
10
400 LFM
300 LFM
200 LFM
100 LFM
0 LFM
5
0
15
10
400 LFM
300 LFM
200 LFM
100 LFM
0 LFM
5
0
25
40
55
70
Am bient Tem perature ( oC)
Figure 59. Output Current vs. Temperature for open
frame version at VIN = 48Vdc, TA = 25°C.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
85
25
40
55
70
Am bient Tem perature ( oC)
85
Figure 60. Output Current vs. Temperature for baseplate
version at VIN = 48Vdc, TA = 25°C.
SHEET 22 OF 26
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
Common
Mode Choke
X-Cap
Y-Cap
Cin
DESCRIPTION
CTX01-15091
Cooper Electronic
Technologies
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
All
Symbol
L
W
H
H
AEO
ALO
Weight
AEO
ALO
PIN ASSIGNMENT
1
2
3
4
Min
-
Typ
2.30 [58.42]
0.90 [22.90]
-
Max
0.40 [10.1]
0.32 [8.2]
Unit
in [ mm ]
in [ mm ]
in [ mm ]
-
34.02 [1.2]
22.68 [0.8]
-
g [oz]
g [oz]
+VIN
ENABLE
-VIN
-Vo
5
6
7
8
2.30
[58.4]
2.30
[58.4]
E
- Vin
+ Output
+ Sense
Trim
-Sense
-Output
+ Vin
+ Output
+ Sense
Trim
-Sense
-Output
+ Vin
0.90
[22.9]
-SENSE
TRIM
+SENSE
+Vo
0.90
[22.9]
E
- Vin
PIN SIDE DOWN
PIN SIDE DOWN
0.32
[8.2]
0.15
[3.9]
0.31
[7.9]
0.45
[11.4]
0.15
[3.8]
0.15
[3.8]
2.00
[50.8]
0.45
[11.4] 0.60
[15.2]
0.75
[19.0]
THRU-HOLE
2.19
[55.5]
0.30
[7.6]
0.15
[3.8]
0.45
[11.4]
0.75
[19.0]
0.15
[3.8]
0.30
[7.6]
0.45
[11.4] 0.60
[15.2] 0.75
[19.1]
0.75
[19.1]
SURFACE MOUNT
Figure 62A. ALO (Openframe) Mechanical outline.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
SHEET 24 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
Mechanical Specifications (continued)
Mechanical Specifications
2.30
[58.4]
2.30
[58.4]
0.90
[22.9]
E
- Vin
PIN SIDE DOWN
0.90
[22.9]
0.40
[10.1]
0.23
[5.8]
0.15
[3.8]
0.15
[3.8]
2.00
[50.8]
0.75
[19.0]
OTP Reference Sense
Points: Vicinity of Pin 2
(Enable Pin)
E
- Vin
PIN SIDE DOWN
0.15
[3.9]
0.39
[9.8]
0.15
[3.8]
0.30
[7.6]
0.45
[11.4]
0.45
[11.4]
+ Output
+ Sense
Trim
-Sense
-Output
+ Vin
+ Output
+ Sense
Trim
-Sense
-Output
+ Vin
0.15
[3.8]
0.60
[15.2]
0.75
[19.0]
0.75
[19.1]
2.19
[55.5]
0.45
[11.4] 0.60
[15.2]
0.45
[11.4]
THRU-HOLE
0.30
[7.6]
0.75
[19.1]
SURFACE MOUNT
Figure 62B. (Baseplate) Mechanical Outline
Figure 63. Recommended Pad layout for SMT (Suffix “S”) version.
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
SHEET 25 OF 26
Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
RECOMMENDED REFLOW PROFILE
SOLDERING CONSIDERATIONS
240
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.
PEAK TEMPERATURE
200°C - 230°C
220
TEMPERATURE (deg C)
200
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.
183°C
180
REFLOW
ZONE
160
140
120
< 80 sec
110°C
100
120 - 180 sec
PRE-HEAT ZONE
80
60
SLOPE
< 4°C /sec
40
20
For SMT terminated modules, refer to Figure 64 for
the recommended reflow profile.
0
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
CONSTRUCTION
A
w
L = Open frame
E = Baseplate
O/P CURRENT
O
O/P VOLTAGE
Vin
y
48
xx
04 = 4A
12 = 12A
20 = 20A
20 = 20A
25 = 25A
25 = 25A
25 = 25A
Note: 1) For Through Hole termination:
B =12V
A =5V
F =3.3V
G =2.5V
Y =1.8V
M =1.5V
K =1.2V
Enable
N
N = Negative
Blank = Positive
PIN LENGTH
-
TERMINATION
6
6 = 3.7mm
blank = 5mm
default
S
S = SMT Termination
Blank = thru-hole
- 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
AUGUST 25, 2005 - REVISION G
SHEET 26 OF 26
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