Technical Reference Notes
Hercules (AEH/ALH60) Open
Frame or HS Adapted
AEH60F48 /ALH60F48 Isolated DC/DC Converter Module
Industry Standard ½ Brick – 36-75V Input, 3.3V / 60A Output
The AEH60F48 / ALH60F48 is part of Astec’s New Ultra High Density ½ Brick family capable of running 60Amps at 3.3V
output. With Efficiencies up to 92% typical at 3.3V - 60Amps, this product provides a 1% to 2% performance increase in
efficiency over the leading 60Amp competitors and up to 10% higher output current. The operating temperature range (-
40°C to 85°C for the ALH; -40°C to 100°C baseplate for AEH) assures maximum application flexibility. New single-
output models feature superior transient response with excellent stability in high capacitance/low ESR load applications.
This family has an effective thermal adapter plate which allows for heat sinking under particularly harsh conditions.
Without the adapter plate (ALH60) provides a very effective low profile which performs extremely well in convection
cooled applications.
Electrical Parameters
Input
Input range
Input Surge
Efficiency
36-75 VDC
100V / 100ms
91%@3.3V (Typical @ 60
Amps)
Control
Enable
TTL compatible
(Positive & Negative enable options)
Industry Standard
½ Brick Package
Output
Regulation
(Line, Load, Temp)
Ripple and Noise
<2%
2% typical (100mV p-p
max)
Up to 10%Vout
Special Features
•
•
•
•
•
•
•
•
•
High efficiency, 92% (30-70%Load))
-40°C to 100°C baseplate operating temp
Open Frame version also available
(ALH60)
Positive and Negative enable function
Low output ripple and noise
High capacitive load limit
Remote sense compensation
Regulation to zero load
Fixed frequency switching (190 KHz)
Remote Sense
Output Voltage
Adjust Range
Transient Response
±10% of nominal output
150mV max deviation with
50% to 75% full load
300 µS (max) recovery
Over Voltage
Protection
130% nominal
Environmental Specifications
•
Operating temperature:
-40°C to +85°C for Open Frame (ALH60)
-40°C to +100°C (Baseplate) for (AEH60)
Storage temperature: -40°C to +125C
MTBF: >1 million hours
Safety
§
§
UL, cUL 60950 Recognized
EN 60950 through TUV-PS
•
•
MODEL: AEH/ALH60F48
SEPTEMBER 26, 2002 - REVISION 02
SHEET 1 OF 21
Technical Reference Notes (AEH60/ALH60F48)
AEH60 / ALH60 SERIES
THIS SPECIFICATION COVERS THE REQUIREMENTS
FOR AN INDUSTRY STANDARD HALF BRICK (MAX 198W @ 3.3V) SINGLE OUTPUT ULTRA HIGH
EFFICIENCY ISOLATED DCDC CONVERTER
MODEL NAME / SIS CODE
AEH60F48
AEH60G48
AEH60Y48
AEH60K48
ALH60F48
ALH60G48
ALH60Y48
ALH60K48
Options:
Negative Enable:
Positive Enable:
Construction
HS Adapter
HS Adapter
HS Adapter
HS Adapter
Open Frame 0.4”
Open Frame 0.4”
Open Frame 0.4”
Open Frame 0.4”
Vout, Iout
3.3V/60A
2.5V/60A
1.8V/60A
1.2V/60A
3.3V/60A
2.5V/60A
1.8V/60A
1.2V/60A
Suffix
"N"
no suffix
MODEL: AEH/ALH60F48
SEPTEMBER 26, 2002 - REVISION 02
SHEET 2 OF 21
Technical Reference Notes (AEH60/ALH60F48)
Electrical Specifications
STANDARD TEST CONDITION
on a single unit, unless otherwise specified.
T
A
:
+V
IN
:
-V
IN
:
Enable:
+V
OUT
:
-V
OUT
:
Trim (V
ADJ
):
+Sense:
-Sense:
25°C (Ambient Air)
48V ± 2%
Return pin for +V
IN
Open (Positive Enable)
Connect to Load
Connect to Load (return)
Open
Connect to +V
OUT
Connect to -V
OUT
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional
operation of the device is not implied at these or any other conditions in excess of those given in the operational
sections of the specs. Exposure to absolute maximum ratings for extended periods can adversely affect device
reliability.
Parameter
Input Voltage:
Continuous:
Transient (100ms)
Operating Temperature
Storage Temperature
Operating Humidity
I/O Isolation
(Conditions : 50µA for 5 sec,
slew rate of 1500V/10sec)
Input-Output
Input-Case
Output-Case
Output Power
All
AEH
AEH
3.3V
-
-
-
P
O,max
-
-
-
-
-
-
-
-
1500
1500
1500
198
Vdc
Vdc
Vdc
W
Device
All
All
AEH
ALH
All
All
Symbol
V
I
V
I, trans
T
C
T
A
T
STG
-
Min
0
0
-40
-40
-55
-
Typ
-
-
-
-
-
-
Max
75
100
100
85
125
85
Unit
Vdc
Vdc
ºC
°C
ºC
%
MODEL: AEH/ALH60F48
SEPTEMBER 26, 2002 - REVISION 02
SHEET 3 OF 21
Technical Reference Notes (AEH60/ALH60F48)
Electrical Specifications
(continued)
INPUT SPECIFICATIONS
Parameter
Operating Input Voltage
Maximum Input Current
1
(V
IN
= 0 to V
IN,max
: I
O
= I
O,max
)
Input Reflected-ripple Current
2
(5Hz to 20MHz: 12uH source
impedance: T
A
= 25 ºC.)
No Load Input Power
(V
IN
= V
IN,nom
)
Note:
Device
All
F (3.3V)
All
Symbol
V
IN
I
IN,max
I
I
Min
36
-
-
Typ
48
-
-
Max
75
7.2
15
Unit
V
DC
A
mA
PK-PK
All
-
-
-
5
W
1. The power module is not internally fused. An input line fuse must always be used.
2. See Figure 1 for the Input Reflected-Ripple Current Test Setup.
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Setpoint
(V
IN
= V
IN,min
to V
IN,max
at
I
O
= I
O,max
; T
A
= 25 ºC )
Output Regulation:
Line
Load (I
O
= I
O,min
to I
O,max
)
Temp (AEH: -40 ºC to 100ºC)
(ALH: -40°C to 85°C)
Output Ripple and Noise
3
Peak-to-Peak (5 Hz to 20 MHz)
V
IN
= 36V, 48V
V
IN
= 75V
External Load Capacitance
(See Stability Curves for Detail)
Rated Output Current
Output Current-limit Inception
(when unit is shut down)
Efficiency
4
(V
I
= V
IN,nom
; I
O,max
; T
A
= 25°C)
Switching Frequency
Note:
Device
3.3V
Symbol
V
O,SET
Min
3.24
Typ
3.3
Max
3.34
Unit
Vdc
All
All
All
-
-
-
-
-
-
0.1
0.1
-
0.4
0.4
1.0
%
%
%Vo
3.3V
All
All
All
3.3V
All
-
-
-
Io
Io
-
-
-
-
-
0
63
90
180
66
-
-
-
-
91
195
100
150
50,000
60
77
-
210
mV
PK-PK
mV
PK-PK
µF
A
A
%
KHz
3. See Figure 2 for the Output Ripple Test Setup
4. Refer to Figures 5 and 6 for the Efficiency Curves
MODEL: AEH/ALH60F48
SEPTEMBER 26, 2002 - REVISION 02
SHEET 4 OF 21
Technical Reference Notes (AEH60/ALH60F48)
Electrical Specifications
(continued)
OUTPUT SPECIFICATIONS
Parameter
Dynamic Response
5
:
(∆I
O
/∆t = 1A/10µs ; V
I
= V
IN,nom
;
T
A
= 25°C)
Load Change from I
O
= 50% to
75% of I
O,max
:
Peak Deviation Settling Time (to
V
O,nom
)
Load Change from I
O
= 50% to
25% of I
O,max
:
Peak Deviation Settling Time (to
V
O,nom
)
Turn-On Time
(I
O
= I
O,max
; Vo within 1%)
Device
Symbol
Min
Typ
Max
Unit
All
-
-
-
-
-
-
-
-
-
-
-
-
4
0
150
300
150
300
10
4
mV
µsec
mV
µsec
msec
%Vo
All
-
-
All
All
-
-
Output Voltage Overshoot
(I
O
= I
O,max
; T
A
= 25°C)
Note:
5. Refer to the Transient characteristics on Figures 7 and 8.
FEATURE SPECIFICATIONS
Parameter
Enable Pin Voltage :
Logic Low
Logic High
Enable Pin Current :
Logic Low
Logic High (I
LEAKAGE
at 10V)
Module Output Voltage @ Logic Hi
Module Output voltage @ Logic Low
Output Voltage Adjustment Range
6
Output Overvoltage Clamp
Undervoltage Lockout
Turn-on Point
Turn-off Point
Isolation Capacitance
Isolation Resistance
Calculated MTBF
(I
O
= I
O,max
; T
A
= 25°C)
Note:
Device
All
All
All
All
AEH/ALH60x48N
AEH/ALH60X48
Symbol
Min
-0.7
2.95
-
-
-
-
Typ
-
-
-
-
-
-
-
4.10
34.8
33.5
2700
-
TBD
Max
1.2
10
1.0
50
0.2
0.2
110
5.00
35.5
34.5
-
-
-
Unit
V
V
mA
µA
V
V
%Vo
V
V
V
PF
MΩ
Hours
All
3.3V
All
All
All
All
All
-
V
O,CLAMP
-
-
-
-
-
90
3.90
34.0
33.0
-
10
-
6. For Output Voltage Adjustment setup, refer to Figures 3 and 4.
SHEET 5 OF 21
MODEL: AEH/ALH60F48
SEPTEMBER 26, 2002 - REVISION 02
