550W High Power Density Medical Grade Power Supplies
X
ASM550/BSM550
Medical IEC 60601-1 3rd Edition Safety
EN 60601-1-2 4th Edition EMC
EN 55011 (CISPR11) Class B Emissions
BF Leakage Current, 2 MOPP Isolation
Class II Option Available for Home Medical
Applications (BSM550 Models)
5V and 12V Auxiliary Outputs
Current Sharing Capability Enables Parallel
Operation for Higher Power Needs
Remote Output Enable and Power Good Signal
Remote Sense Input
High Efficiency, up to 92% at 230 VAC
Universal 80-275 VAC Input, 50/60 Hz
Variable Speed Fan for Low Load Noise
Reduction
Available in Open Frame, U-Channel and
Enclosed with Fan Configurations
PRODUCT DESCRIPTION
The Astrodyne TDI ASM550/BSM550 series power supplies are high power density, medical grade designs for
both medical and industrial applications. Both the ASM550 series with Class I protection and the BSM550
series with Class II protection have 2 MOPP isolation and BF leakage current, crucial for patient safety either
in the hospital or at home.
These power supplies operate over the input voltage range of 80 to 275 VAC at 50-60Hz frequency and deliver
up to 550 Watts of regulated DC output power in a low profile form factor that is 1U height compatible. A
current sharing feature allows multiple units to be used in parallel for very high power delivery. These power
supplies are compliant with DoE Level VI efficiency requirements and the RoHS directive.
The ASM550/BSM550 series products have been certified to the IEC 60601-1 3rd Edition international medical
safety standard. They are also certified to the collateral standard EN 60601-1-2 4th Edition for electromagnetic
compatibility.
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 1 of 11
550W High Power Density Medical Grade Power Supplies
Product Models
Model
(1)
Output
Voltage
Output Current
Forced Air /
Convection(2,3)
X
ASM550/BSM550
5V Aux. Current
Forced Air /
Convection(2,3)
12V Aux. Current
Forced Air /
Convection(2,3,4)
Efficiency (Typ)
230 /115 VAC
45.0A / N.A.
36.7A / N.A.
30.6A / N.A.
22.9A / N.A.
19.6A / N.A.
15.3A / N.A.
11.5A / N.A.
10.5A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
90% / 88%
90% / 88%
90% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
45.0A / 20.8A
36.7A / 16.7A
30.6A / 13.9A
22.9A / 11.6A
19.6A / 10.0A
15.3A / 7.8A
11.5A / 5.8A
10.5A / 5.2A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
90% / 88%
90% / 88%
90% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
45.0A / 20.8A
36.7A / 16.7A
30.6A / 13.9A
22.9A / 11.6A
19.6A / 10.0A
15.3A / 7.8A
11.5A / 5.8A
10.5A / 5.2A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
90% / 88%
90% / 88%
90% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
Enclosed Models (Integrated Fan) with Headers
ASM550-120-BEH-S00
ASM550-150-BEH-S00
ASM550-180-BEH-S00
ASM550-240-BEH-S00
ASM550-280-BEH-S00
ASM550-360-BEH-S00
ASM550-480-BEH-S00
ASM550-540-BEH-S00
12 VDC
15 VDC
18 VDC
24 VDC
28 VDC
36 VDC
48 VDC
54 VDC
Open Frame Models with Headers
ASM550-120-BNH-S00
ASM550-150-BNH-S00
ASM550-180-BNH-S00
ASM550-240-BNH-S00
ASM550-280-BNH-S00
ASM550-360-BNH-S00
ASM550-480-BNH-S00
ASM550-540-BNH-S00
12 VDC
15 VDC
18 VDC
24 VDC
28 VDC
36 VDC
48 VDC
54 VDC
U-Channel Models with Headers
ASM550-120-BUH-S00
ASM550-150-BUH-S00
ASM550-180-BUH-S00
ASM550-240-BUH-S00
ASM550-280-BUH-S00
ASM550-360-BUH-S00
ASM550-480-BUH-S00
ASM550-540-BUH-S00
12 VDC
15 VDC
18 VDC
24 VDC
28 VDC
36 VDC
48 VDC
54 VDC
Notes:
1. The “ASM” series has Class I protection; use the “BSM” prefix for Class II protection
2. The current ratings for Convection use are based on a 90 VAC Input at 25 degrees C only; refer to the derating curves for detail
at other AC input voltages and ambient temperatures.
3. The current ratings for Forced Air are based on the presence of the minimum specified air flow requirements; refer to the
derating curves for detail with other air flow rates.
4. The embedded fan in the enclosed models consumes 0.5 A of the available current from the 12V Aux. output.
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 2 of 11
550W High Power Density Medical Grade Power Supplies
Model (1)
Output
Voltage
Output Current
Forced Air /
Convection(2,3)
X
ASM550/BSM550
5V Aux. Current
Forced Air /
Convection(2,3)
12V Aux. Current
Forced Air /
Convection(2,3,4)
Efficiency (Typ)
230 /115 VAC
45.0A / N.A.
36.7A / N.A.
30.6A / N.A.
22.9A / N.A.
19.6A / N.A.
15.3A / N.A.
11.5A / N.A.
10.5A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
2A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
0.5A / N.A.
90% / 88%
90% / 88%
90% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
45.0A / 20.8A
36.7A / 16.7A
30.6A / 13.9A
22.9A / 11.6A
19.6A / 10.0A
15.3A / 7.8A
11.5A / 5.8A
10.5A / 5.2A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
2A / 1A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
1A / 0.5A
90% / 88%
90% / 88%
90% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
92% / 88%
Enclosed Models (Integrated Fan) with Terminal Blocks
ASM550-120-BET-S00
ASM550-150-BET-S00
ASM550-180-BET-S00
ASM550-240-BET-S00
ASM550-280-BET-S00
ASM550-360-BET-S00
ASM550-480-BET-S00
ASM550-540-BET-S00
12 VDC
15 VDC
18 VDC
24 VDC
28 VDC
36 VDC
48 VDC
54 VDC
U-Channel Models with Terminal Blocks
ASM550-120-BUT-S00
ASM550-150-BUT-S00
ASM550-180-BUT-S00
ASM550-240-BUT-S00
ASM550-280-BUT-S00
ASM550-360-BUT-S00
ASM550-480-BUT-S00
ASM550-540-BUT-S00
12 VDC
15 VDC
18 VDC
24 VDC
28 VDC
36 VDC
48 VDC
54 VDC
Notes:
1. The “ASM” series has Class I protection; use the “BSM” prefix for Class II protection
2. The current ratings for Convection use are based on a 90 VAC Input at 25 degrees C only; refer to the derating curves for detail
at other AC input voltages and ambient temperatures.
3. The current ratings for Forced Air are based on the presence of the minimum specified air flow requirements; refer to the
derating curves for detail with other air flow rates.
4. The embedded fan in the enclosed models consumes 0.5 A of the available current from the 12V Aux. output.
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 3 of 11
X
ASM550/BSM550
550W High Power Density Medical Grade Power Supplies
INPUT SPECIFICATIONS
AC Input Voltage Range
Input Frequency
DC Input Voltage Range
Input Current
Inrush Current
Power Factor
Earth Leakage Current
Touch Leakage Current
Input Fuse
SAFETY AND COMPLIANCE CERTIFICATIONS
100-240 VAC nominal
80-275 VAC tested
47-63 Hz (50/60 Hz nominal)
110-380 VDC
7.0A max at 100VAC, 60Hz
3.5A max at 240VAC, 50Hz
30A max at 100VAC, 60Hz
60A max at 240VAC, 50Hz
0.95 min at 230VAC, 50Hz
300uA max at 264VAC
60uA typ, 100uA max
at 264VAC (BF Rating)
10A on both ACL and ACN
MAIN OUTPUT SPECIFICATIONS
Output Voltage
Output Power
Minimum Load
Set Point Accuracy
Load Regulation
Line Regulation
Efficiency
Standby Power
Hold-up Time
Ripple and Noise
see Product Model charts
550W max – see derating
No minimum load required
±1% max
±1% max, no load to full load
±0.5% max, 90-264 VAC
see Product Model charts
0.5W max
16ms typ., full load, 115VAC
1% pk-pk max, 20MHz BW,
measured with 47uF Alum
and 0.1uF Ceramic at output
Safety Approvals
IEC 60601-1 3rd Ed, Amend 1:
TUV, CB/CE, CSA C22.2
EN60601-1-2, 4th Ed, Class B
EN 55011 (CISPR11), Class B;
EMC Overall
Conducted and
Radiated Emissions
Harmonic Current
Voltage Fluctuations
ESD Immunity
RF Field Immunity
EFT Burst Immunity
Surge Immunity
Conducted Immunity
Magnet Field Immunity
Voltage Dips and
Interruptions
EN 61000-3-2, Class B
EN 61000-3-3
EN 61000-4-2, Level 4
EN 61000-4-3, Level 3
EN 61000-4-4, Level 3
EN 61000-4-5, Level 3
EN 61000-4-6, Level 3
EN 61000-4-8, Level 4
EN 61000-4-11
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature
-20 to +50°C at full load,
(120VAC, 45 CFM air flow;
up to +75°C at reduced load
see derate charts for other
See derating chart for detail
input and airflow conditions)
Cooling
Storage Temperature*
Operating Humidity*
Operating Altitude
Vibration
Forced air or free air
convection
-40 to +85°C
0% to 95%, non-condensing
0-3000m / 0-10,000 ft
2G rms, 5-500Hz, 3 axes,
30min.
ISOLATION
Input to Output
Input to Earth (Class I)
Output to Earth (Class I)
MECHANICAL SPECIFICATIONS
4000 VAC, 2 MOPP
1500 VAC, 1 MOPP
500 VAC
Size **
Weight
Connectors
PROTECTION
Over Current *
Short Circuit *
Over Voltage *
Over Temperature *
105 to 135% Rated Current
Hiccup Mode, Automatic
recovery
130% Vo max, Latching;
Recycle Input to Reset
Automatic recovery
3.7” x 7.0” x 1.32”
94.0 x 177.8 x 33.6 mm
1.37 lbs / 620 g
see Outline Drawings
** Open frame size only; for U-channel and enclosed, refer to
Outline Drawings
* These are stress ratings. Exposure of the devices to any of
these conditions may adversely affect long term reliability.
Operation under conditions other than the standard operating
conditions is neither warranted nor implied.
All specifications are typical at nominal input, full load, 25°C
unless specified otherwise.
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 4 of 11
550W High Power Density Medical Grade Power Supplies
X
ASM550/BSM550
OPERATION GUIDE AND APPLICATION INFORMATION
PS_ON: Power Supply Control – Enables/disables the main output and the 12V aux output
•
Connect the PS_ON signal (CN4, pin 6) to 5V_AUX_RTN (CN4, pin 1) to enable the main and 12V aux outputs.
Disconnect to disable.
•
Note that the 5V aux output is always on when the AC input is applied.
PWR_OK: Power Good Indicator – Indicates when the main output is in regulation
•
The PWR_OK connection (CN4, pin 4) is open-collector logic; the signal goes high (3.3V to 5V range)
appromimately 160ms after the main output has achieved regulation. Logic low is less than 1V.
REMOTE_SENSE: Output Voltage Compensation – Uses a separate connection to measure the output voltage at
the load, and automatically adjusts the voltage at the output terminals to compensate for line voltage drop.
•
Connect the REMOTE_SENSE input (CN4, pin 8) to a separate wire that terminates at the point of load on the
positive side.
Parallel Operation of Multiple Units for N+1 Redundancy or High Output Power Applications up to 3kW
•
Up to six ASM550 or BSM550 units may be connected in parallel, to support N+1 redundancy or high output
power applications up to 3 kiloWatts.
•
Each unit has an embedded ORing device, which eliminates the need for additional external components.
•
A voltage droop method is used to balance load current sharing.
•
The REMOTE_SENSE signal (CN4, pin 8) of each unit should be connected directly to the load point separately.
Parallel and N+1 Operation Connection Diagram
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 5 of 11
550W High Power Density Medical Grade Power Supplies
X
ASM550/BSM550
THERMAL PERFORMANCE
Jumper J6 defines the Over Current Protection threshold, and is factory-installed for operation to a 550 Watt load
rating with forced air cooling. For a natural convection cooling application with an AC input voltage in the range of
90~120VAC, it is recommended to remove jumper J6 and limit operation to a maximum 300 Watt load. Refer to the
Outline Drawings for the location of jumper J6.
Jumper J6 Settings
J6 Setting
Maximum
Load Power
Installed
550 Watts
(either using embedded fan or by
providing up to 80 CFM airflow)
Removed
300 Watts
Cooled by free air convection *
Application
Cooled by forced air
* On models with a DC output voltage of 24V to 54V, a nominal 230VAC input will support an output load power up to 380 Watts
under free air convection. For such operation, jumper J6 must be installed. Note that operating the product in this manner at
load powers above 380 Watts will degrade operating life.
Output Power Derating – Enclosed Models (all rated input voltages)
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 6 of 11
550W High Power Density Medical Grade Power Supplies
X
ASM550/BSM550
Output Power Derating – Forced Air Cooling for Open Frame and U-Channel Models
Thermal considerations for Open
Frame and U-Channel models:
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 7 of 11
550W High Power Density Medical Grade Power Supplies
X
ASM550/BSM550
Output Power Derating – Free Air Convection Cooling for Open Frame and U-Channel Models
Note: It is recommended that jumper J6 be removed for applications cooled by free air convection.
Refer to Jumper J6 details, listed above.
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 8 of 11
550W High Power Density Medical Grade Power Supplies
X
ASM550/BSM550
OUTLINE DRAWINGS
U-Channel with Terminal Blocks
*
*
* CN2 is not populated on
Class II (BSM) models.
U-Channel with Headers
*
*
* CN2 is not populated on
Class II (BSM) models.
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 9 of 11
X
ASM550/BSM550
550W High Power Density Medical Grade Power Supplies
Enclosed with Terminal Blocks
*
*
* CN2 is not populated on
Class II (BSM) models.
Enclosed with Headers
*
*
* CN2 is not populated on
Class II (BSM) models.
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 10 of 11
550W High Power Density Medical Grade Power Supplies
X
ASM550/BSM550
Open-Frame with Headers
*
*
* CN2 is not populated on
Class II (BSM) models.
ASM550/BSM550 Series Rev 4
2046
www.astrodynetdi.com
©2020 Astrodyne Corporation
Page 11 of 11