AMPSS
Astec Modular Power Supply System
™
BM80AHigh
Performance
Series
DC-DC Converter Module
Technical Reference Manual
Series Highlights
•
•
•
•
•
•
•
•
High Efficiency - up to 87%
85°C baseplate/ case operating temperature
Low output ripple and noise
High Reliability - over 1 million hours MTBF
Wide input voltage range
Excellent Transient Response
Fixed Switching Frequency
Designed to meet Telecom specifications
BM80A High Power Performance Series
2
Contents
Introduction ............................................................................................................ 4
Special Features ...................................................................................................... 4
Ordering Information............................................................................................... 5
Safety ..................................................................................................................... 5
Electrical Specifications ............................................................... 6
Absolute Maximum Ratings – all models .................................................................. 6
Pin Connections - all models ................................................................................... 7
Insulation - all models .............................................................................................. 8
Electrical Specifications for 48V Input Models (BM80A-048L-xxxFyy)..................... 9
Electrical Specifications for 300V Input Models (BM80A-300L-xxxFyy) .....................
........................................................................................................................ 10
Functional Description ................................................................11
Remote Sense (+SENSE, -SENSE) ........................................................................11
Enable Control (ENABLE) .....................................................................................11
Output Voltage Adjustment (V ADJ) ...................................................................... 12
Current Limit Adjustment (C LIM ADJ) ................................................................. 12
Power Good/Identification (PG/ID) ....................................................................... 12
Clock Signals (CLK IN, CLK OUT)...................................................................... 13
Current Sharing (C SHARE).................................................................................. 14
Current Monitoring (C MON) ................................................................................ 14
Temperature Monitoring (TEMP MON) ................................................................. 14
Design Considerations ................................................................ 15
Input Bulk Capacitors ........................................................................................... 15
Input Fusing ......................................................................................................... 15
Remote Loads ...................................................................................................... 15
Thermal Data ........................................................................................................ 15
Overtemperature Protection ................................................................................... 15
Parallel Connection Considerations ........................................................................ 16
Output Ripple and Noise ....................................................................................... 16
Conducted EMI .................................................................................................... 16
Break Regulation................................................................................................... 16
Input Undervoltage Protection ............................................................................... 17
AMPSS
®
Reference Manual
Rev. 10 Jan 03
Application Examples................................................................. 18
AC Input Design ................................................................................................... 18
Parallel Connection Design .................................................................................... 18
Mechanical Information............................................................. 19
Dimensions .......................................................................................................... 19
Recommended PCB Layout .................................................................................. 21
Heatsink Mounting Information ............................................................................ 23
Rev. 10 Jan 03
AMPSS
®
Reference Manual
3
BM80A High Power Performance Series
BM80A High Power Performance Series DC-DC Converters
Introduction
The BM80A is an isolated, single output DC to DC
converter module, providing up to 300W output with a
maximum baseplate operating temperature of 85°C with
no derating. The BM80A features full safety isolated
low voltage secondary side control and Astec Linear
Programming (ALP™) for convenient adjustment of the
module's parameters.
Special Features
•
High Efficiency - up to 87%
•
1MHz fixed switching frequency
•
85°C baseplate/Case operating temperature - no
•
•
•
•
•
•
•
derating
Low output ripple and noise
Excellent transient response
Safety isolated low voltage interface with ALP
TM
linear control
High Reliability - over 1 million hours MTBF
Wide input voltage range
Parallelable with accurate current sharing
Current and temperature monitoring outputs
*Note: PIN 20 and PIN 30 are only available on BM80A-300L-033F90
4
AMPSS
®
Reference Manual
Rev. 10 Jan 03
Ordering Information
M o d e l
B
B
B
B
B
B
M
M
M
M
M
M
8
8
8
8
8
8
0
0
0
0
0
0
A
A
A
A
A
A
N u m b e r
-
-
-
-
-
-
3
3
3
3
3
3
0
0
0
0
0
0
0
0
0
0
0
0
L
L
L
L
L
L
-
-
-
-
-
-
0
0
0
0
0
1
2
2
3
3
5
5
2
2
3
3
0
0
F
F
F
F
F
F
7
8
7
9
6
2
5
5
0
0
0
0
I n p u t
V o l t a g e
3
3
3
3
3
3
0
0
0
0
0
0
0
0
0
0
0
0
V
V
V
V
V
V
O u t p u t
V o l t a g e
2
2
3
3
5
1
. 2 V
. 2 V
. 3 V
. 3 V
. 0 V
5 V
O u t p u t
C u r r e n t
7
8
7
9
6
2
5
5
0
0
0
0
A
A
A
A
A
A
O u t p u t
P o w e r
1
1
2
2
3
3
6
8
3
9
0
0
5
7
1
7
0
0
W
W
W
W
W
W
B M 8 0 A - 0 4 8 L - 0 3 3 F 7 0
B M 8 0 A - 0 4 8 L - 0 5 0 F 6 0
4 8 V
4 8 V
3 . 3 V
5 . 0 V
7 0 A
6 0 A
2 3 1 W
3 0 0 W
Please contact Astec for information on other output voltages, power ranges and configurations.
Safety
UL:
CSA:
VDE:
CE:
UL1950
CSA C22.2 No.950
VDE 0805
EN60950
CE Mark
Please contact Astec for information on specific module approvals.
Note:
Ensure all modules are used according to the Installation Instructions provided with each module.
All modules are designed to meet the following specifications:
ETS300-132-2,
EN55022-A
(1)
EN55022-B
(1)
EN41003
IEC6100-44
(1)
IEC6100-45
(1)
IEC950
VDE0871-A
(1)
VDE0878-A
(1)
BTNR2511(5)
(1)
(1)
Require additional external circuitry for full compliance. Please refer to application section of this manual
or
contact technical support office for further information.
Rev. 10 Jan 03
AMPSS
®
Reference Manual
5
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