Technical Reference Notes
AEH/ALH80 Series
AEH/ALH80 Single Output Baseplate/Open-Frame DC-DC Converter Module
Industry Standard ½ Brick: 36V-75V Input / 80A Output Current
The AEH/ALH80 series is part of Astec's next generation single output, high-density industry standard half bricks. It operates
from a 36V to 75V DC Bus and comes in three different Isolated Logic Output voltages (ILO) well suited for DPA
applications. It’s designed to handle 80A maximum output current for 1.8V, 1.5V and 1.2V at high levels of efficiency. It
provides tight regulation and exhibits clean and monotonic output start up characteristics. The AEH/ALH80 comes with
industry standard features such as Input UVLO, OCP, OVP, OTP, output Trim, differential output Sense pins. It comes either
with baseplate or open frame construction, with double pair or single pair (option) output pins.
Electrical Parameters
Input
Input Range
Input Surge
Efficiency
36-75 VDC
100V / 100ms
1.8V @ 87.0%
1.5V @ 85.5%
1.2V @ 83.0%
Control
Enable
TTL compatible
(Positive and Negative Enable Options)
Output
Special Features
•
•
•
•
•
•
•
•
•
Industry Standard ½ Brick Footprint
Positive and Negative Enable Options
Regulation to Zero Load
High Capacitive Load Start-up
Fixed Switching Frequency at 400kHz
Output Trim
Input Under-Voltage Lockout
Low profile / open-frame
Double pair or single pair output pins option
Load Current
Line/Load Regulation
Ripple and Noise
Output Voltage
Adjust Range
Transient Response
Remote Sense
Over Current
Protection
80A max
< 1% VO
50mVPK-PK (Typ)
±10% VO
<5% VO deviation (Typ)
50% to 75% Load Change
250µsec settling time (Typ)
+10%VO
120% IO,MAX
Environmental Specifications
Safety
•
•
•
UL + cUL 60950, Recognized
EN60950 through TUV-PS
CB Test Report
-40ºC to 85ºC Operating Temperature
-40ºC to 125ºC Storage Temperature
MTBF > 1 million hours
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 1 OF 17
Technical Reference Notes
AEH/ALH80 Series
AEH/ALH80 Series
MODEL NAME
AEH80Y48
AEH80M48
AEH80K48
ALH80Y48
ALH80M48
ALH80K48
CONSTRUCTION
Baseplate adapted
Baseplate adapted
Baseplate adapted
Open Frame; Low Profile
Open Frame; Low Profile
Open Frame; Low Profile
OPTIONS:
Negative Enable:
Positive Enable (Default):
Single Pair Output Pins:
Redundant Output Pins (Default):
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
VOUT / IOUT
1.8V / 80A
1.5V / 80A
1.2V / 80A
1.8V / 80A
1.5V / 80A
1.2V / 80A
SUFFIX
"N"
No suffix
“-3”
No suffix
SHEET 2 OF 17
Technical Reference Notes
AEH/ALH80 Series
Electrical Specifications
STANDARD TEST CONDITION on a single module unless otherwise specified.
TA
Airflow
+VIN
Enable
-VIN
-VOUT
-Sense
Trim
+Sense
+Vout
PIN 1
PIN 2
PIN 3
PIN 4
PIN 5
PIN 6
PIN 7
PIN 8
25°C (Ambient Air)
Refer to Figures 21 to 24
Return pin for +VIN
Dependent on model series
48V ± 2V
Connected to Load
Connected to +VOUT
Open
Connected to -VOUT
Connected to Load (return)
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 Voltage1
Continuous
Transient (100ms)
Isolation Voltage
Input to Output
Input to Case
Output to Case
Operating Ambient Temperature
Storage Temperature
Operating Humidity
Maximum Enable Voltage
Max Output Power
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
Device
Symbol
Min
Typ
Max
Unit
All
All
VIN
VI N, trans
0
0
-
75
100
Vdc
Vdc
-
-
TA
TC
TSTG
-
-40
-40
-55
-
-
Vdc
Vdc
Vdc
ºC
PO
PO
PO
-
-
1500
1500
1500
+85
100
125
85
25
144
120
96
All
AEH
ALH
AEH
All
All
All
Y (1.8V)
M (1.5V)
K (1.2V)
ºC
%
Vdc
W
W
W
SHEET 3 OF 17
Technical Reference Notes
AEH/ALH80 Series
Electrical Specifications (continued)
INPUT SPECIFICATION
Parameter
Device
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
All
VIN
36
48
75
VDC
Input Under-Voltage Lock-out
All
T_ON Threshold
34.0
34.8
35.5
Vdc
T_OFF Threshold
32.5
33.5
34.5
Maximum Input Current1
Y (1.8V)
IIN,max
5.2
A
Conditions: VIN =VIN,min
M (1.5V)
4.4
IO = IO,max; TA = 25 ºC
K (1.2V)
3.6
Max PDISS @ IO = 0A (VIN = VIN,NOM)
All
5
W
All
II1/ II2
15
mAPK-PK
Input Reflected Ripple Current2
Conditions: PO = PO,max; TA = 25 ºC
BW: 5Hz to 20MHz
Note: 1. An input line fuse is recommended for use (e.g. Littlefuse type 3AB 314, 8A/250V or equivalent).
2. External input capacitance required. See Input Ripple Current test measurement setup on Fig 1.
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Set point
VIN = VIN, min to VIN, max;
IO =IO,Max
Output Regulation
Line: VIN = VIN, Min to VIN,
Device
1V8 (Y)
1V5 (M)
1V2 (K)
Max
Load: IO = IO, Min to IO, Max
Temperature: Ta = -40 ºC to
+85ºC
Ripple and Noise3
Peak-to-Peak: (5Hz to 20MHz)
Output Current4
External Load Capacitance
Capacitor ESR
Output Current-limit Inception
VOUT = 90% VO,SET5
Over Voltage Protection Range6
Over Temperature Range7
Symbol
VO,SET
All
1V8 (Y)
All
1V2 (K)
All
All
All
All
IO
-
All
IO
1V8 (Y)
1V5 (M)
1V2 (K)
All
Min
1.770
1.475
1.180
Typ
1.800
1.500
1.200
Max
1.830
1.525
1.220
Unit
Vdc
Vdc
Vdc
-
0.3
0.1
0.1
0.3
-
0.6
0.4
0.4
0.7
1.0
%Vo
0
4
83
50
-
100
80
50,000
100
mVp-p
A
µF
mΩ
A
2.20
1.80
1.44
110
2.40
1.90
1.50
-
2.90
2.50
2.10
120
V
°C
86.0
84.5
82.0
87.0
85.5
83.0
-
%
%
%
(AVG PCB TEMPERATURE)
Efficiency
VIN = VIN-NOM; IO = IO,MAX
TA=25°C
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
1V8 (Y)
1V5 (M)
1V2 (K)
η
η
η
SHEET 4 OF 17
Technical Reference Notes
AEH/ALH80 Series
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Turn-On Response Time
IO = IO,MAX, VO within 1%
Switching Frequency
Dynamic Response:
∆IO/∆t=0.1A / uS
CO = 0uF
Load Change from IO = 50% to 75% of
IO, Max:
Peak Deviation Settling Time to VO, SET
tolerance
Load Change from IO = 50% to 25% of
IO, Max:
Peak Deviation Settling Time to VO, SET
tolerance
Output Overshoot
at T-on / T-off
Passive Resistive Full Load
Output Enable ON/OFF
Negative Enable ("N" suffix)
Enable Pin voltage for Module ON
Module OFF
Positive Enable (No suffix)
Enable Pin voltage for Module ON
Module OFF
Output Voltage Remote Sensing8,10
Output Voltage Trim Range9,10
Note:
Device
Symbol
Min
Typ
Max
Unit
All
All
-
360
4
400
10
440
ms
KHz
-
-
0.1
-
A/µs
-
-
-
200
mV
-
-
-
500
µs
-
-
-
200
mV
-
-
-
500
µs
All
-
-
0
4
%Vo
N suffix
-
-0.7
2.95
-
1.2
10.0
V
V
No suffix
-
2.95
-0.7
90
-
10.0
1.2
10
110
V
All
All
All
All
%VO
%VO
3. See Figure 2 for Ripple and Noise test measurement setup. Output ripple may exceed max limits at high
line condition.
4. Appropriate Thermal Derating applies. See Figures 17 to 22 for the Thermal Derating Curves
5. In an event of an over current condition - the converter will be latched off. Restart is possible either by
cycling the input voltage or toggling the Enable signal for 100ms. Consult factory for Auto restart
option.
6. The OVP mode is latching. The converter will be latched off once the sensed voltage across the output
pins exceeds the threshold limits. Restart is possible by either cycling the input voltage or toggling the
Enable signal for 100ms. For testing purposes, output current should be derated so as not to exceed
maximum output power.
7. Output of the module will be terminated once the operating temp reaches the OTP range. Normal
operation resumes once the temperature falls below the OTP range.
8. The 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 9 (+Sense) and Pin 7 (-Sense) should be
connected to Pin 10/11 (+Vout) and Pin 5/6 (Return) respectively at the point where regulation is desired.
9. Refer to Equation (1) and (2) and Figures 3 and 4 for the Output Trim Adjust configuration.
10. The combination of remote sense and Trim adjust cannot exceed 110% of VO, NOM.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 5 OF 17
Technical Reference Notes
AEH/ALH80 Series
Electrical Specifications (continued)
SAFETY APPROVAL
The AEH80/ALH80 series have been certified through:
• UL + cUL 60950, Third Edition - Recognized (PENDING)
• EN 60950 through TUV-PS (PENDING)
• Meets Basic Insulation
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(-)
Note: Measure the input reflected ripple current with a simulated source
inductance (Ltest) of 12uH. Capacitor Cs offsets possible battery/
source impedance. Measure current as shown above.
Figure 1. Input Reflected Ripple Current Measurement Setup.
COPPER STRIP
Vo(+)
0.1
µF
1 uF
10 uF
SCOPE
RESISTIVE
LOAD
Vo(-)
Note: Use a 0.1µF 50V X7R ceramic capacitor and a 10µF 25V tantalum cap.
Scope measurement should be made using a BNC probe socket positioned
about 76mm (3 in.) away from the module’s output terminals. The ext.
capacitors should be placed between the BNC socket and the module’s
output terminals, with a minimum distance of 51mm (2in.) from the latter.
Figure 2. Peak to Peak Output Noise Measurement Setup.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 6 OF 17
Technical Reference Notes
AEH/ALH80 Series
Basic Operation and Features
INPUT UNDER VOLTAGE LOCKOUT
To prevent any instability to the converter, which may affect the end system, the AEH/ALH80 series have been designed to
turn-on once VIN is in the voltage range of 34-35.5 VDC. Likewise, it has also been programmed to turn-off when VIN drops
down to 32.5-34.5 VDC.
OUTPUT VOLTAGE ADJUST/TRIM
The converter comes with a TRIM pin (PIN 8), 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 (Pin8) and
+SENSE PIN (Pin 7). Please refer to Equation (1) for the
required external resistance and output adjust
relationship.
1.8V / 1.5V
Equation (1a):
Vo(100 + ∆%) − 100 − 2 ⋅ kΩ
Radj_up
∆%
1.225⋅ ∆%
1.2V
Equation (1b):
5.1⋅ Vo(100 + ∆%) − 510 − 6.1 ⋅ kΩ
Radj_up
0.6⋅ ∆%
∆%
To DECREASE the output, external Radj_down resistor
should be connected between TRIM PIN (Pin 8) and
-SENSE PIN (Pin 9). Please refer to Equation (2) for the
required external resistance and output adjust
relationship.
1.8V / 1.5V
Equation (2a)
100
Radj_down
− 2 ⋅ kΩ
∆%
1.2V
Equation (2b):
Radj_down
510 − 6.1 ⋅ kΩ
∆%
-Vin
Case
-Vout
-Sense
Rload
Vadj
Radj_up
Enable
+Vin
+Sense
+Vout
Figure 3. External resistor configuration to increase the output.
-Vin
Case
-Vout
-Sense
Radj_down
Vadj
Enable
+Vin
Rload
+Sense
+Vout
Figure 4. External resistor configuration to decrease the output.
Where: Radj = resistance in kohms
? % = percent change in the output
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 7 OF 17
Technical Reference Notes
AEH/ALH80 Series
Basic Operation and Features (continued)
OUTPUT ENABLE
The AEH/ALH80 series comes with an Enable pin (PIN 2), which is primarily used to turn ON/OFF the converter. Both a
Positive (no part number 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 comes in latching mode. The converter is latched off if the output voltage exceeds the
OVP threshold limits. The OVP latch is reset either by cycling the input voltage or toggling the Enable signal for 100ms.
OVER CURRENT PROTECTION (OCP)
The Over Current Protection circuit comes in latching mode. The converter is latched off if the load current on the output
reaches the OCP threshold limit. The OCP latch can be reset either by cycling the input voltage or toggling the Enable signal
for 100ms. Consult factory for Auto-restart option.
OVER TEMPERATURE PROTECTION (OTP)
The Over Temperature Protection circuit will shutdown the converter once the average PCB temperature 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.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 8 OF 17
Technical Reference Notes
AEH/ALH80 Series
Performance Curves
1.8V SERIES
Efficiency vs. Load Current, T A = 25°C
Power Dissipation vs. Load Current, T A = 25°C
25
Power Dissipation (Watts)
95%
90%
Efficiency
85%
80%
75%
70%
65%
Vin = 36Vdc
60%
Vin = 48Vdc
55%
Vin = 75Vdc
10
20
30
40
50
60
Output Current (Amps)
70
Vin = 75 Vdc
15
10
5
0
80
10
20
30
40
50
60
70
80
Output Current (Amps)
Figure 5. Efficiency vs. Load Current Curves at TA=25°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
Figure 6. Power Dissipation vs. Load Current Curves at
TA=25°C for different input voltages with 300 LFM
airflow directed from Pins 4 to 1.
Power Dissipation vs. Load Current, T A = 85°C
Efficiency vs. Load Current, T A = 85°C
30
Power Dissipation (Watts)
95%
90%
85%
Efficiency
Vin = 48 Vdc
0
50%
0
Vin = 36 Vdc
20
80%
75%
70%
65%
Vin = 36 Vdc
60%
Vin = 48 Vdc
55%
Vin = 36 Vdc
25
Vin = 48 Vdc
Vin = 75 Vdc
20
15
10
5
Vin = 75 Vdc
0
50%
0
10
20
30
40
50
60
Output Current (Amps)
70
80
Figure 7. Efficiency vs. Load Current Curves at TA=85°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
0
10
20
30
40
50
60
Output Current (Amps)
70
80
Figure 8. Power Dissipation vs. Load Current at TA=85°C
for different input voltages with 300LFM airflow directed
from Pins 4 to 1.
SHEET 9 OF 17
Technical Reference Notes
AEH/ALH80 Series
Performance Curves (continued)
1.5V SERIES
Efficiency vs. Load Current, T A = 25°C
Power Dissipation vs. Load Current, T A = 25°C
25
95%
Vin = 36 Vdc
Power Dissipation (Watts)
90%
Efficiency
85%
80%
75%
70%
65%
Vin = 36Vdc
60%
Vin = 48Vdc
55%
Vin = 75 Vdc
15
10
5
Vin = 75Vdc
0
50%
0
10
20
30
40
50
60
Output Current (Amps)
70
0
80
Figure 9. Efficiency vs. Load Current Curves at TA=25°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
10
20
30
40
50
60
Output Current (Amps)
70
80
Figure 10. Power Dissipation vs. Load Current at TA=25°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
Efficiency vs. Load Current, TA = 85°C
Power Dissipation vs. Load Current, T A = 85°C
30
Power Dissipation (Watts)
95%
90%
85%
Efficiency
Vin = 48 Vdc
20
80%
75%
70%
65%
Vin = 36 Vdc
60%
Vin = 48 Vdc
Vin = 75 Vdc
20
15
10
5
Vin = 48 Vdc
55%
Vin = 36 Vdc
25
Vin = 75 Vdc
50%
0
0
10
20
30
40
50
60
Output Current (Amps)
70
80
Figure 11. Efficiency vs. Load Current Curves at TA=85°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
0
10
20
30
40
50
60
Output Current (Amps)
70
80
Figure 12. Power Dissipation vs. Load Current at TA=85°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
SHEET 10 OF 17
Technical Reference Notes
AEH/ALH80 Series
Performance Curves (continued)
1.2V SERIES
Efficiency vs. Load Current, T A = 25°C
Power Dissipation vs. Load Current, T A = 25°C
25
95%
Vin = 36 Vdc
Power Dissipation (Watts)
90%
Efficiency
85%
80%
75%
70%
65%
Vin = 36Vdc
60%
Vin = 48Vdc
55%
Vin = 75 Vdc
15
10
5
Vin = 75Vdc
0
50%
0
10
20
30
40
50
60
Output Current (Amps)
70
0
80
10
20
30
40
50
60
70
80
Output Current (Amps)
Figure 13. Efficiency vs. Load Current Curves at TA=25°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
Figure 14. Power Dissipation vs. Load Current at TA=25°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
Power Dissipation vs. Load Current, T A = 85°C
Efficiency vs. Load Current, TA = 85°C
30
85%
80%
75%
70%
65%
60%
Vin = 36 Vdc
55%
Vin = 48 Vdc
50%
Power Dissipation (Watts)
90%
Efficiency
Vin = 48 Vdc
20
Vin = 36 Vdc
Vin = 48 Vdc
25
Vin = 75 Vdc
20
15
10
5
Vin = 75 Vdc
0
45%
0
10
20
30
40
50
60
Output Current (Amps)
70
80
Figure 15. Efficiency vs. Load Current Curves at TA=85°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
0
10
20
30
40
50
60
Output Current (Amps)
70
80
Figure 16. Power Dissipation vs. Load Current at TA=85°C
for different input voltages with 300 LFM airflow directed
from Pins 4 to 1.
SHEET 11 OF 17
Technical Reference Notes
AEH/ALH80 Series
Performance Curves (continued)
CURRENT VS. TEMPERATURE CURVES
ALH80Y48 O/P Cutrrent vs. Ambient Temp
80
70
70
60
60
Output Current [A]
Output Current [A]
AEH80Y48 O/P Current vs. Ambient Tem p
80
50
40
30
0 LFM
20
100 LFM
200 LFM
10
50
40
30
0 LFM
20
200 LFM
10
400 LFM
0
400 LFM
0
25
35
45
55
65
75
Ambient Temperature [°C]
85
Figure 17. 1.8V Output Derating Curves (100ºC Baseplate)
at various airflow conditions directed across PIN 4 to 1
with the module mounted vertically.
25
70
70
60
60
Output Current [A]
80
50
40
30
0 LFM
100 LFM
200 LFM
10
45
55
65
75
Ambient Temparature [°C]
85
ALH80M48 O/P Current vs. Ambient Temp
80
20
35
Figure 18. 1.8V Output Derating Curves (125ºC Junction)
at various airflow conditions directed across PIN 4 to 1
with the module mounted vertically.
AEH80M48 O/P Current vs. Ambient Tem p
Output Current [C]
200 LFM
400 LFM
0
50
40
30
20
0 LFM
100 LFM
10
200 LFM
400 LFM
0
25
35
45
55
65
75
85
Ambient Temperature [°C]
Figure 19. 1.5V Output Derating Curves (100ºC Baseplate)
at various airflow conditions directed across PIN 4 to 1
with the module mounted vertically.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
25
35
45
55
65
75
85
Ambient Temperature [°C]
Figure 20. 1.5V Output Derating Curves (125ºC Junction)
at various airflow conditions directed across PIN 4 to 1
with the module mounted vertically.
SHEET 12 OF 17
Technical Reference Notes
AEH/ALH80 Series
Performance Curves (continued)
CURRENT VS. TEMPERATURE CURVES
ALH80K48 O/P Current vs. Ambient Tem p
80
70
70
60
60
Output Current [A]
Output Current [A]
AEH80K48 O/P Current vs. Ambient Tem p
80
50
40
30
0 LFM
100 LFM
20
50
40
30
0 LFM
20
100 LFM
200 LFM
10
200 LFM
10
400 LFM
0
400 LFM
0
25
35
45
55
65
75
85
Ambient Temperature [°C]
25
35
45
55
65
75
85
Ambient Temperature [°C]
Figure 21. 1.2V Output Derating Curves (100ºC Baseplate)
at various airflow conditions directed across PIN 4 to 1
with the module mounted vertically.
Figure 22. 1.2V Output Derating Curves (125ºC Junction)
at various airflow conditions directed across PIN 4 to 1
with the module mounted vertically.
Figure 23. 1.8V Start-up characteristic at VIN = 48Vdc, full
load condition at TA = 25ºC.
Figure 24. 1.8V transient load response for a 25% IO,MAX
(40-60-40A) load change at VIN = 48Vdc, TA = 25ºC.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 13 OF 17
Technical Reference Notes
AEH/ALH80 Series
Performance Curves (continued)
Figure 25. 1.5V Start-up characteristic at VIN = 48Vdc, full
load condition at TA = 25ºC.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
Figure 27. 1.2V Start-up characteristic at VIN = 48Vdc, full
load condition at TA = 25ºC.
SHEET 14 OF 17
Technical Reference Notes
AEH/ALH80 Series
Mechanical Specifications
Parameter
Dimension
Device
All
Symbol
L
W
H
H
AEH
ALH
AEH
ALH
Weight
PIN ASSIGNMENT
1
2
3
4
5
6
+VIN
Enable (On/Off)
Case
-VIN
-Vo
-Vo [Optional Pin]
0.20 [5.1]
Typ
2.40 [60.9]
2.30 [58.4]
0.50 [12.7]
0.42 [10.6]
130 [4.6]
110 [3.9]
Unit
in [ mm ]
in [ mm ]
in [ mm ]
in [ mm ]
g [oz]
g [oz]
-
0.50 [12.7]
0.20 [5.1]
0.08Ø[2.0Ø] 4 PLACES
+ Output
+ Vin
Max
-
-SENSE
TRIM
+SENSE
+VO [Optional Pin]
+Vo
7
8
9
10
11
M3 X0.5 MOUNTING HOLE
4 PLACES
1.90 [48.3]
0.20 [5.1]
Min
-
0.04Ø [1.0Ø] 7 PLACES
2.00 [50.8]
2.40 [61.0]
-Output
- Vin
0.47
[11.9]
PIN SIDE DOWN
0.50 [12.7]
0.70 [17.7]
0.90 [22.9]
1.20 [30.5]
1.50 [38.1]
1.70 [43.1]
SIDE VIEW
0.50 [12.7]
PIN ASSIGNMENT
11
10
9
1
2
1.90 [48.3]
0.90 [22.8]
1.50 [38.1]
1.90 [48.3]
8
7
6
3
5
4
0.20 [5.1]
1.90 [48.3]
PIN SIDE UP
1 + Vin
2 Enable (On/Off)
3 CASE
4 - Vin
5-6 -Output
7 -Sense
8 Trim
9 + Sense
10-11 + Output
NOTES:
ALL DIMENSIONS ARE IN INCHES (MILLIMETERS)
PIN PLACEMENT TOLERANCE : ± 0.005(0.127)
MECHANICAL TOLERANCE ± .002(0.5)
RECOMMENDED SCREW TORQUE SETTING FOR MOUNTING
INTO CUSTOMER BOARD MUST BE 5-6 LB/IN
Figure 25. AEH80 Series (Baseplate) Mechanical Outline Drawing.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 15 OF 17
Technical Reference Notes
AEH/ALH80 Series
Mechanical Specifications (continued)
2.30 [58.4]
0.42 [10.6]
1.90 [48.3]
0.20 [5.1]
0.23 [5.9]
-Output
0.08Ø[2.0Ø] 4 PLACES
- Vin
0.04Ø [1.0Ø] 7 PLACES
2.40 [60.9]
2.00 [50.8]
+ Vin
+ Output
PIN SIDE DOWN
SIDE VIEW
0.50 [12.7]
0.50 [12.7]
0.70 [17.8]
0.90 [22.9]
1.20 [30.5]
1.50 [38.1]
1.70 [43.2]
1.90 [48.3]
PIN ASSIGNMENT
0.90 [22.8]
11
10
1
1.50 [38.1]
9
2
1.90 [48.3]
8
7
6
3
5
4
0.20 [5.1]
PIN SIDE UP
1 + Vin
2 Enable (On/Off)
3 CASE
4 - Vin
5-6 -Output
7 -Sense
8 Trim
9 + Sense
10-11 + Output
NOTES:
ALL DIMENSIONS ARE IN INCHES (MILLIMETERS)
PIN PLACEMENT TOLERANCE : ± 0.005(0.127)
MECHANICAL TOLERANCE ± .002(0.5)
Figure 26. ALH80 Series (Open Frame) Mechanical Outline Drawing.
SOLDERING CONSIDERATIONS
The AEH/ALH80 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.
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.
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 16 OF 17
Technical Reference Notes
AEH/ALH80 Series
Mechanical Specifications (continued)
PART NUMBERING SCHEME FOR ORDERING
AwH80
E = Baseplate
L = Open Frame
OUTPUT
VOLTAGE
VIN
ENABLE LOGIC
OUTPUT PIN OPTION
x
48
y
z
Y = 1.8V
M = 1.5V
K = 1.2V
N
= Negative Enable
“Blank” = Positive Enable (Default)
“-3” = Single pair of output pins
(delete Pins 6 and 10)
“Blank” = 4 output pins
(Pins 5, 6, 10, 11 present)
Please call 1-888-41-ASTEC for further inquiries
or visit us at www.astecpower.com
MODEL: AEH/ALH80 SERIES
OCTOBER 9, 2003 - REVISION B
SHEET 17 OF 17