MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
1
400AUS
Highlights & Features
• Safety Approvals to IEC 60601-1 3rd ed. & IEC 60950-1
• Risk management report available
• Low touch current (<0.1mA Normal & ,0.3mA single fault)
• Over-Voltage/Load/Temperature & Short Circuit protections
• 2 Million Hours MTBF
• 2 x MOPP (means of patient protection)
• 3 years warranty
Safety Standards
CB Certified for worldwide use
Model Number: MDS-400AUS☐ B
Unit Weight: 910 grams (32.1 ounces)
Dimensions (W x L x H): 97.0 x 198.0 x 41.5 mm
3.82 x 7.80 x 1.63 in
General Description
The MDS series of embedded power supply comes with universal AC input at 90Vac to 264Vac. Other features include low earth
leakage, risk management report available and the electric shock protection comply with 2 x MOPP. The MDS series is certified for
EMC standards according to EN 55011 for industrial, scientific and medical (ISM) radio-frequency equipment and EN 55032 for
Information Technology Equipment (ITE) radio-frequency equipment.
The MDS series come with both medical and ITE safety approvals including UL/cUL/CCC/CE and CB certification and are fully
compliant with RoHS Directive 2011/65/EU for environmental protection.
Model Information
Medical AC-DC Open Frame
Model
Number
Input Voltage Range
Output
V
oltage
Conversion Current Output
Forced Air Current Output
MDS-400AUS19 B 90-264Vac 19Vdc 15.8A 21.1A*
MDS-400AUS24 B 90-264Vac 24Vdc 12.5A 16.67A*
MDS-400AUS30 B 90-264Vac 30Vdc 13.3A 11.67A*
* With 200LFM force air
Model Numbering
MDS
400
AUS
-
Delta Medical
power Supply
Max wattage in the product series.
Maybe lower at some voltage.
400 → 400W
Family Code
☐
Output Voltage
Single Output:
19 for 19V
24 for 24V
30 for 30V
B
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
2
Specifications
Input Ratings / Characteristics
Model Number MDS-400AUS19 B MDS-400AUS24 B MDS-400AUS30 B
Nominal Input Voltage 100-240Vac
Input Voltage Range
90-264Vac
Nominal Input Frequency
50-60Hz
Input Frequency Range
47-63Hz
Input Current (max)
5.5A @ 90Vac, 2.7A @ 264Vac
Efficiency (typ.)
91.38%, Reference Fig.1-1
91.94%, Reference Fig.1-2
92.51%, Reference Fig.1-3
Standby Power (max)
1.2W
Inrush Current (typ.)
60A @ 115Vac, 60A @ 230Vac
Earth Leakage Current (max) 0.1mA @ 240Vac NC1), 0.3mA @ 264Vac SFC2)
1) NC: normal condition
2) SFC: single fault condition
MDS-400AUS19 B MDS-400AUS24 B
50
55
60
65
70
75
80
85
90
95
100
25% 50% 75% 100%
Output load
Efficiency ( %)
115Vac Efficiency
230Vac Efficiency
Fig.1-1 MDS-400AUS19 B Efficiency versus output load Fig.1-2 MDS-400AUS24 B Efficiency versus output load
MDS-400AUS30 B
Fig.1-3 MDS-400AUS30 B Efficiency versus output load
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
3
Output Ratings / Characteristics
Model Number MDS-400AUS19 B MDS-400AUS24 B MDS-400AUS30 B
Nominal Output Voltage
19Vdc
24Vdc
30Vdc
Output Voltage Tolerance ± 2%
Output Current 21.1A with 200LFM force
air, 15.8A for convection
16.67A with 200LFM force
air, 12.5A for convection
13.33A with 200LFM force
air, 11.67A for convection
Output Power 400W with 200LFM force
air, 300W for convection
400W with 200LFM force
air, 300W for convection
400W with 200LFM force
air, 350W for convection
Line Regulation (max)
±0.5%
±0.5%
±1%
Fan Supply
12V 0.25A
12V 0.25A
N/A
Remote Sense
Compensates for up to 500mV voltage drop
Ripple & Noise (typ.)* ±1% pk-pk @ Full load ±1% pk-pk @ Full load ±1.5% pk-pk @ Full load
Hold-up Time (min)
12ms @ 115Vac
*Ripple & Noise is measured with AC coupling mode, and in parallel to end with 0.47uF ceramic capacitor & 10uF electroytic capacitor.
Ripple & Noise measurement circuit
0.47uF Ceramic
10uF Electrolytic
PSU Load
Test Fixture
5cm Scope
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
4
Mechanical
Model Number MDS-400AUS19 B MDS-400AUS24 B MDS-400AUS30 B
Case Chassis
AL1100F (with black electro coating)
Case Cover NA
Dimensions (W x Lx H) 97.0x198.0x41.5 mm (3.82x7.80x1.63 in)
Unit Weight 910 grams (32.1 ounces)
Power de-rating curve See Fig. 3-1 & Fig. 3-2 (400W with forced air flow)
Terminal Input DECA: T33-BM1103A301
Output DECA: T33-BM1104A301
DC Fan Output JWT: A2508WV0-2P JWT: A2508WV0-2P
NA
Environment
Surrounding Air
Temperature
Operating -10°C to +70°C
Storage -40°C to +85°C
Power De-rating -10°C to +50°C 100% load
50°C to 70°C with load de-rate power
Operating Humidity 5-95% RH (Non-Condensing)
Storage Humidity 5-95% RH (Non-Condensing)
Operating Altitude Up to 3,000 meters
(up to 9,842 feet or 106-70kPa)
Up to 3,000 meters
(up to 9,842 feet or 106-70kPa)
Up to 5,000 meters
(up to 16,404 feet or 106-54kPa)
Shock Test
Non-Operating
50G, 11ms, 3 shocks for each direction
Vibration
Non-Operating
5-500Hz, 2.09Grms, 20 minute for each three axis
Protections
Overvoltage (max) 150%, Latch Mode
Over load / Over current (max) 130% of rated load current, Hiccup Mode, (Non-Latching, Auto-Recovery)
Over Temperature Hiccup Mode Latch Mode Hiccup Mode
Short Circuit
Hiccup Mode, (Non-Latching, Auto-Recovery)
Protection Against Shock
Class I with PE* connection
*PE: Protective Earth
Reliability Data
MTBF 2 Million Hrs based on
Telecordia SR-332
2 Million Hrs based on
Telecordia SR-332
500K Hours based on
Telecordia SR-332
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
5
Safety Standards / Directives
Electrical Safety All models IEC60601-1 3rd and 3.1rd edition CB report
IEC60601-1 edition 3.1rd (2012), EN60601-1 (2006) + A11 + A1 + A12, CAN/CSA-
C22.2 NO. 60601-1:14, ANSI/AAMI ES60601-1:2005/(R)2012
ITE All models IEC60950-1 (Ed.2,2005), GB4943.1-2011, GB9254-2008, GB17625.1-2003
MDS-400AUS
30 B
UL 60950-1 +CSA C22.2 No. 60950-1-07,
IEC 62368-1
CE MDD Directive 93/42/EEC
Material and Parts RoHS Directive 2011/65/EU Compliant
Galvanic Isolation Input to
4000 Vac
Input to
1500 Vac
Output to
500 Vac
EMC (Compliant with IEC 60601-1-2 4th Ed. Requirements)
EMC / Emissions EN55011/EN55032, FCC Title 47:Class B
Harmonic Current
IEC61000-3-2 Meet Class D limit
Immunity to
Voltage Flicker IEC61000-3-3
Electrostatic
Discharge
IEC61000-4-2 Level 4 Criteria A1)
Air Discharge: 15kV
Contact Discharge: 8kV
Radiated Field IEC61000-4-3 Criteria A1)
80MHz-2700MHz, 10V/m AM modulation
385MHz-5785MHz, 28V/m Pulse mode and other modulation
Electrical Fast
Transient / Burst
IEC61000-4-4 Level 3 Criteria A1) :2kV
Surge IEC61000-4-5 Level 3 Criteria A1)
Common Mode3): 2kV
Differential Mode4): 1kV
Conducted IEC61000-4-6 Level 2 Criteria A1)
150kHz-80MHz, 3Vrms, 6Vrms at ISM bands and Amateur radio bands
Power Frequency
Magnetic Fields
IEC61000-4-8 Criteria A1)
Magnetic field strength 30A/m
Voltage Dips IEC61000-4-11 Criteria A1)
0% UT, 0.5 cycle (10ms), 0o/45o/90o/135o/180o/225o/270o/315o/360o
Criteria A1)
0% UT, 1 cycle (20ms), 0o
Criteria B2)
70% UT, 25 cycle (500ms), 0o
Criteria B2)
0% UT, 250 cycle (5000ms), 0o
1) Criteria A: Normal performance within the specification limits
2) Criteria B: Output out of regulation, or shuts down during test. Automatically restore to normal operation after test.
3) Asymmetrical: Common mode (Line to earth)
4) Symmetrical: Differential mode (Line to line)
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
6
Block Diagram
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
7
Dimensions (For MDS-400AUS19/24 B)
L x W x D: 97.0 x 198.0 x 41.5 mm (3.82x7.80x1.63 in)
Notes
• Dimensions are in mm (inches)
• There are two locations where assembled power supply is connected to the customer’s product
o Bottom mounting, use (6X) #6-32 UNC screws to affix assembled power supply to product’s enclosure. Thread must be
withstand 12Kgf-cm (10.4lb-in) min. Maximum allowed screw penetration is 3.0mm (0.12 inch).
o Side mounting, use (4X) #6-32 UNC screws to affix one side of assembled power supply to the product’s enclosure.
Thread must be withstand 12Kgf-cm (10.4lb-in) min. Maximum allowed screw penetration is 5.0mm (0.2 inch)
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
8
Dimensions (For MDS-400AUS30 B)
L x W x D: 97.0 x 198.0 x 41.5 mm (3.82x7.80x1.63 in)
Notes
• Dimensions are in mm (inches)
• There are two locations where assembled power supply is connected to the customer’s product
o Bottom mounting, use (6X) #6-32 UNC screws to affix assembled power supply to product’s enclosure. Thread must be
withstand 12Kgf-cm (10.4lb-in) min. Maximum allowed screw penetration is 3.0mm (0.12 inch).
o Side mounting, use (4X) #6-32 UNC screws to affix one side of assembled power supply to the product’s enclosure.
Thread must be withstand 12Kgf-cm (10.4lb-in) min. Maximum allowed screw penetration is 5.0mm (0.2 inch)
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
9
De-rating Curve
Convection
With 200LFM force air
100%
75%
62.5%
50%
0% -10°C 50°C 70°C
Output Power
Ambient
Temperature
Convection
With 200LFM force air
100%
87.5%
50%
0%-10°C 50°C 70°C
Output Power
43.75%
Functions
Start-up Time
The time required for the output voltage (Vo) to reach 90% of its set value, after the input AC voltage is applied.
Rise Time
The time required for the output voltage (Vo) to change from 10% to 90% of its steady state value.
Hold-up Time
Hold up time is the time when the AC input collapses and output voltage retains regulation for a certain period of time. The time
required for the output to reach 95% of its set value, after the input voltage is removed.
■ Graph illustrating the Start-up Time, Rise Time, and Hold-up Time
Fig.3-1 MDS-400AUS19&24V de-rating curve
Fig.3-2 MDS-400AUS30V de-rating curve
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
10
Dynamic Response
The power supply output voltage will remain within ±3% of its
steady state value, when subjected to a dynamic load change
from 50 to 100% of its rated current.
Inrush Current
Inrush current is the input current that occurs when the input
voltage is first applied. For AC input voltages, the maximum peak
value of inrush current will occur during the first half cycle of the
applied AC voltage. This peak value decreases exponentially
during subsequent cycles of AC voltage.
Overvoltage Protection
The power supply’s overvoltage circuit will be activated when its
internal feedback circuit fails. The output voltage shall not exceed
its specifications defined on Page 4 under “Protections”. Power
supply will latch off, and require removal/re-application of input
AC voltage in order to restart.
Short Circuit Protection
The power supply’s output OLP/OCP function also provides
protection against short circuits. When a short circuit is applied,
the output current will operate in “Hiccup mode”, as shown in the
illustration in the OLP/OCP section on this page. The power
supply will return to normal operation after the short circuit is
removed.
Overload & Over current Protections
The power supply’s Overload (OLP) and Over current (OCP)
Protections will be activated when output current is between
110% and 130% of IO (Max load). Upon such an occurrence, VO
will start to drop. Once the power supply has reached its
maximum power limit, the protection will be activated. and the
power supply will go into “Hiccup mode” (Auto-Recovery). The
power supply will recover once the fault condition causing the
OLP and OCP is removed and IO is back within the specified limit.
Additionally, if the IO is <130% but >110% for a prolong period of
time (depending on the load), the Over Temperature Protection
(OTP) will be activated due to high temperature on critical
components. The power supply will then go into hiccup mode until
the fault is removed; and, the input voltage is removed, then
reapplied.
Over Temperature Protection
As mentioned above, the power supply also has Over
Temperature Protection (OTP). This is activated when the
overload condition persists for an extended duration and the
output current is below the overload trigger point but >100% load.
In the event of a higher operating condition at 100% load, the
power supply will run into OTP when the surrounding air
temperature is higher than the operating temperature. When
activated, the output voltage will go into hiccup mode (latch off
mode for MDS-400AUS19 B) until the input voltage is removed;
then, reapplied, and the surrounding air temperature drops to its
normal operating temperature.
50%
Load
T (sec)
100%
Load
50ms
50ms
50ms
50ms
TECHNICAL DATASHEET
MDS Medical AC-DC Open Frame
400Watt / MDS-400AUS☐ B
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2018, Rev. 00)
11
Certificate
.
Attention
Delta provides all information in the datasheets on an “AS IS” basis and does not offer any kind of warranty through the information for
using the product. In the event of any discrepancy between the information in the catalog and datasheets, the datasheets shall prevail,
(please refer to www.DeltaPSU.com for the latest datasheets information). Delta shall have no liability of indemnification for any claim
or action arising from any error for the provided information in the datasheets. Customer shall take its responsibility for evaluation of
using the product before placing an order with Delta.
Delta reserves the right to make changes to the information described in the datasheets without notice.
All Delta Medical Power products conform to the European directive 2011/65/EU. RoHS is the abbreviation for
“Restriction of the use of certain hazardous substances.
Delta has been certified as meeting the requirement of ISO 13485: 2003 and EN ISO 13485:2012 for the design
and manufacture of switching power supply and adaptor for medical device.
In addition to a UL Total Certification Program (TCP) approved client laboratory for IEC60950. Delta also has
participated UL Client Test Data Program (CDTP) for IEC 60601
