ALQ Series Technical Reference Notes
ALQ Isolated DC/DC Converter Module
Industry Standard Quarter Brick : 36~75V Input, 1.2V, 1.5V, 1.8V, 2.5V and 3.3V single Output
Features
•
•
Delivers up to 40A output current
Industry Standard Quarter Brick
57.9mm X 36.8mm X 9.60mm
2.28”X 1.45’’ X 0.38’’
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Basic isolation
Ultra High efficiency
Improved thermal performance:
28A at 55ºC at 1ms-1 200LFM
Industry Standard Quarter Brick :
2.28”X 1.45’’ X 0.38’’
for 3.3Vo
Options
•
•
Choice of positive logic or negative logic
for CNT function
Choice of short pins or long pins
High power density
Low output noise
Industry standard pinout
2:1 wide input voltage of 36-75V
CNT function
Remote sense
Trim function: +10%/-20%
Input under-voltage lockout
Output over-current protection
Output over-voltage protection
Over-temperature protection
Description
The ALQ series is a new open frame DC-DC converter for optimum efficiency and
power density. The ALQ series provide up to 40A output current in an industry
standard quarter brick, which makes it an ideal choice for small space, high current
and low voltage applications. The ALQ series uses an industry standard quarter
brick: 57.9mm X 36.8mm X 9.60mm (2.28”x1.45”x0.38”) and standard pinout
configuration, provides CNT and trim functions. ALQ series can provide 3.3V@35A,
2.5V@40A, 1.8V@40A, 1.5V@40A and 1.2V@40A single output, outputs are
isolated from inputs. The series can achieve ultra high efficiency, for most
applications a heat sink is not required.
DATE: March. 25, 2003
MODEL : ALQ Series
S 1/42
2
Contents
O
PTIONS
........................................................................................................................................................ 1
D
ESCRIPTION
................................................................................................................................................. 1
MODULE NUMBERING .............................................................................................................................. 4
ELECTRICAL SPECIFICATIONS.............................................................................................................. 5
I
NPUT
S
PECIFICATIONS
.................................................................................................................................. 5
A
BSOLUTE
M
AXIMUM
R
ATINGS
.................................................................................................................... 6
O
UTPUT
S
PECIFICATIONS
............................................................................................................................... 7
O
UTPUT
S
PECIFICATIONS
(C
ONT
) .................................................................................................................. 8
O
UTPUT
S
PECIFICATIONS
(C
ONT
) .................................................................................................................. 9
F
EATURE
S
PECIFICATIONS
............................................................................................................................. 9
CHARACTERISTIC CURVES................................................................................................................... 10
P
ERFORMANCE
C
URVES
– E
FFICIENCY
........................................................................................................ 10
P
ERFORMANCE
C
URVES
– O
UTPUT
P
ERFORMANCE
C
URVES
........................................................................11
P
ERFORMANCE
C
URVES
– O
UTPUT
P
ERFORMANCE
C
URVES
....................................................................... 13
P
ERFORMANCE
C
URVES
– T
RANSIENT
R
ESPONSE
....................................................................................... 14
P
ERFORMANCE
C
URVES
– T
RANSIENT
R
ESPONSE
(C
ONT
) .......................................................................... 15
P
ERFORMANCE
C
URVES
– T
RANSIENT
R
ESPONSE
(C
ONT
) ........................................................................... 16
P
ERFORMANCE
C
URVES
– T
RANSIENT
R
ESPONSE
(C
ONT
) .......................................................................... 17
P
ERFORMANCE
C
URVES
– S
TARTUP
C
HARACTERISTICS
.............................................................................. 18
P
ERFORMANCE
C
URVES
– S
TARTUP FROM
CNT C
ONTROL
......................................................................... 19
FEATURE DESCRIPTION ......................................................................................................................... 20
CNT F
UNCTION
........................................................................................................................................... 20
R
EMOTE
S
ENSE
............................................................................................................................................ 21
T
RIM
............................................................................................................................................................ 22
M
INIMUM
L
OAD
R
EQUIREMENTS
................................................................................................................ 23
O
UTPUT
O
VER
-
CURRENT
P
ROTECTION
....................................................................................................... 24
O
UTPUT
C
APACITANCE
................................................................................................................................ 24
D
ECOUPLING
............................................................................................................................................... 25
G
ROUND
L
OOPS
........................................................................................................................................... 25
O
UTPUT
O
VER
-V
OLTAGE
P
ROTECTION
....................................................................................................... 26
O
VER
-T
EMPERATURE
P
ROTECTION
............................................................................................................. 26
DESIGN CONSIDERATION ...................................................................................................................... 27
T
YPICAL
A
PPLICATION
................................................................................................................................ 27
F
USING
........................................................................................................................................................ 28
I
NPUT
R
EVERSE
V
OLTAGE
P
ROTECTION
...................................................................................................... 28
EMC............................................................................................................................................................ 29
DATE: March. 25, 2003
MODEL : ALQ Series
S 2/42
ALQ Series Technical Reference Notes
S
AFETY
C
ONSIDERATION
............................................................................................................................. 30
THERMAL CONSIDERATION ................................................................................................................. 31
T
ECHNOLOGIES
............................................................................................................................................ 31
B
ASIC
T
HERMAL
M
ANAGEMENT
................................................................................................................. 31
M
ODULE
D
ERATING
..................................................................................................................................... 34
MTBF ............................................................................................................................................................. 40
MECHANICAL CONSIDERATIONS........................................................................................................ 40
I
NSTALLATION
.............................................................................................................................................. 40
S
OLDERING
.................................................................................................................................................. 40
MECHANICAL CHART (PIN SIDE VIEW)............................................................................................. 41
ORDERING INFORMATION..................................................................................................................... 42
DATE: March. 25, 2003
MODEL : ALQ Series
S 3/42
4
Module Numbering
ALQ
— —
1 2
Explanation:
1
2
3
4
5
Low profile (open frame, No case-isolated)
Quarter Brick
Output current: 35=35Amps
Output voltage: F=3.3V; G=2.5V; Y=1.8V; M=1.5V; K=1.2V
Input voltage: 48=36~75V
Negative logic, Omit for positive logic
35
——
3
F
—
4
48
—
5
N
-7
—
——
6
7
6 CNT logic: N
7
Pin length: Omit for 4.8 mm 0.5mm (0.189in. 0.02in.)
6=3.80mm 0.25mm(0.150in. 0.010in.)
8=2.80mm 0.25mm(0.110in. 0.010in.)
7=5.8 mm 0.5mm (0.228in. 0.02in.)
DATE: March. 25, 2003
MODEL : ALQ Series
S 4/42
ALQ Series Technical Reference Notes
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage and
temperature conditions. Standard test condition on a single unit is as following:
Tc (board):
+Vin:
−Vin:
CNT:
+Vout:
−Vout:
+Sense:
-Sense:
Trim(Vadj):
25°C
48V +/
−2%
return pin for +Vin
connect to -Vin
connect to load
connect to load (return)
connect to +Vout
connect to -Vout
Open
Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current
(V
I
= 0 to V
I,max
, Io = Io,max)
Device
All
All
Symbol
V
I
I
I,max
Min
36
-
Typ
48
-
Max
75
4.5
Unit
V
DC
A
Input Reflected-ripple Current
(
5Hz to 20MHz: 12uH source
impedance: T
A
= 25 ºC.)
All
I
I
-
-
20
mAp-p
Supply
(1kHz)
voltage
rejection
All
-
50
-
-
dB
CAUTION: This power module is not internally fused. An input line fuse must always be used.
DATE: March. 25, 2003
MODEL : ALQ Series
S 5/42
