Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
350A Series
Highlights & Features
–ATX 12V Standard function & form factor
-- IEC60601-1 3.1 ed. (Medical) & IEC 60950-1(ITE) approvals
–Suitable for Type BF patient access applications
–Built-in Active PFC
– Maximum Output Power of 350Watts.
th
– Compliant with IEC 60601-1-2 4 Ed. requirements
Safety Standards
CB Certified for worldwide use
Model Number:
MDS-350AD701 AA
Unit Weight:
1.2Kg (2.6 lb)
Dimensions (W x L x H): 100x194x40.5mm
3.94x7.64x1.59 inch
General Description
The MDS-350AD701 series of internal ATX power supplies comes with universal AC input from 90Vac to 264Vac. Other
features include low leakage, availability of risk management report, and electric shock protection compliant with 2 x
MOPP requirements. The MDS series is certified for EMC standards according to EN 55011 for industrial, scientific and
medical (ISM) radio-frequency equipment; and, EN 55022 for Industrial Technology Equipment (ITE) radio-frequency
equipment. In addition, only recognized Japanese capacitors are used to ensure long product life.
The MDS-350AD701 series comes with both medical and ITE safety approvals, including UL/CE/CQC (5000m); and, CB
certification, and are fully compliant with RoHS Directive 2011/65/EU for environmental protection.
Model Information
Table 1 (For Maximum Output Power Limits, see “Output Power” requirements on Page 2)
Output Voltage Minimum Load (A) Normal Load (A) Maximum Load (A) Load Regulation Ripple & Noise
+3.3V
+5V
+5Vsb
+12V1
+12V2
-12V
-5V
0.5
0.5
0.0
1.0
1.0
0.0
0.0
8
9
1.25
8
8
0.25
0.1
16
18
2.5
16
16
0.5
0.2
+/- 7%
+/- 7%
+/- 5%
+/- 5%
+/- 5%
+/- 10%
+/- 10%
50mVpp
70mVpp
150mVpp
120mVpp
120mVpp
120mVpp
50mVpp
Model Numbering
MDS
Delta Medical
power Supply
1
350
Max wattage in
the product
Series.
Maybe lower at
some voltage.
060 → 60W
150 →150W
parameters
1K2 → 1,200W are
A
Family Code
A~ Z
D
701
A
A
Output Voltage
Product Type
D: Enclosure
Revision Code
701: +3.3V, +5V, +5Vsb, +12V1,
+12V2, -12V, -5V
All
specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
Revision code
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
Specifications
Input Ratings / Characteristics
Nominal Input Voltage
100-240Vac
Input Voltage Range
90-264Vac
Nominal Input Frequency
50-60Hz
Input Frequency Range
47-63Hz
Input Current (max)
6A
Input Surge Voltage (max)
300Vac for 100ms
Full load Efficiency (typ.)
82% @ 115Vac/60Hz
85% @ 230Vac/50Hz
Inrush Current (max)
No damage, cold start
Leakage Current (max)
0.1mA @ NC, 0.3mA @ SFC
Output-PE(protective earth) Leakage current for BF application (max)
0.1mA @ NC, 0.5mA @ SFC
Power Factor (min)
0.90 @ 115V/50Hz, 230V/50Hz, full load
1)
1) NC: normal condition, SFC: single fault condition
Output Ratings / Characteristics
Nominal Output Voltage (V rated)
+12V1,+12V2,+5V,+3.3V,+5Vsb,-5V,-12V
Output Voltage Tolerance
See Table 1
Output Power
Maximum combined output power of +3.3V & +5V,
combined, shall not exceed 130W.
Maximum combined output power of +12V1 ,+12V2,
+3.3V & +5V not exceed 331W
Total output power should not exceed 350W
Line Regulation (max)
±0.5%
Load Regulation (max)
Ripple & Noise (typ.)
See Table 1
Start-up Time (max)
500ms @ 115 Vac
Hold-up Time (min)
17ms @ 115 Vac
Dynamic Response (Overshoot & Undershoot O/P Voltage)
± 10% @ 50-100% load*
Rise time (max)
20ms
Remote On_Off/INHIBIT
TTL Active Low : Output Enable
TTL Active High : Output Disable
Power Good (PG) Signal(See page YY for details)
1.
2.
* When the dynamic load is applied to one of the outputs, other loads is at minimum load
2
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
PG changes to TTL High 100-500 milliseconds after
all outputs reach their final steady state value.
After input AC is removed, PG changes to TTL Low
at least 1 millisecond before any output falls out of
regulation range.
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
Ripple & Noise measurement circuit for each output
Mechanical
Case Chassis
SECC / SGCC
Case Cover
SECC / SGCC
Dimensions (W x L x H)
100 x 194 x 40.5 mm (3.94x7.64x1.59 inch)
Unit Weight (typ.)
1.2Kg ( 2.6 pounds)
Indicator
None
Cooling System
Forced Cooling
Environment
Surrounding Air Temperature
Operating
Storage
0°C to +50°C
-40°C to +85°C
Operating Humidity
5-95% RH (Non-Condensing)
Operating Altitude
5,000 meters (16,400 feet)
Shock Test (Non-Operating)
50G, 11ms, 3 shocks for each direction
Vibration (Operating)
5-500Hz, 2Grms, 15 minute for each three axis
3
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
Protections (Latch Mode protection requires removal of fault, plus removal and reapplication of input AC voltage, in order
to restart the power supply. See page 9 for additional details on the different types of protection. )
Overvoltage (max)
For +3.3V output, Maximum voltage < 4.8V.
For +5V output, Maximum voltage < 7V.
For +12V1 & +12V2 outputs, Maximum voltage < 16V
Protection Method: Latch Mode
For +5Vsb output, Maximum voltage < 10V.
Protection Method: Latch Mode
Over load / Over current (max)
For +3.3V output, Maximum current < 25A
For +5V output, Maximum current < 25A
For +12V1/+12V2 output, Maximum current < 25A
Protection Method: Latch Mode
For +5Vsb output, Maximum current < 5A.
Protection Method: Auto-recovery Mode
Protection Method: Latch Mode
Over Temperature
Short Circuit on any output.
+3.3V, +5V, +12V1 and +12V2, Protection Method:
Latch Mode
+5Vsb , Protection Method: Auto-recovery
Reliability Data
MTBF(Minimum) at 115Vac, 35 °C
Convection Air Flow
500 K hrs based on Telecordia SR-332
Operating life(Minimum) at 115Vac, 25°C
Convection Air Flow
26,280 hrs
Safety Standards / Directives
Medical Safety
IEC 60601-1 Edition 3.1 (2012), EN60601-1 (2006) +
A11 + A1 + A12, CAN/CSA-C22.2 NO. 60601-1:14,
ANSI/AAMI ES60601-1:2005/(R)2012
ITE Safety
IEC60950-1 CB report
TUV60950-1
UL60950-1+CAN/CSA60950-1
GB4943.1-2011, GB9254-2008, GB17625.1-2003
CE
MDD Directive 93/42/EEC
Environmental
RoHS Directive 2011/65/EU Compliant
Galvanic Isolation
1)
4
Input to/Output (2XMOPP) 4000 Vac
1)
Input to/Ground(1XMOPP) 1500 Vac
Output to/Ground(1XMOPP) 1500 Vac ( Type BF application rated)
PSU can support PoE applications with Primary to FG 2500Vac test.
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
EMC
EMC / Emissions
Harmonic Current Emissions
EN55011/EN55022,FCC Title 47:Class B
IEC61000-3-2
Meet Class D limit
Immunity to
Voltage Flicker
IEC61000-3-3
Electrostatic Discharge
IEC61000-4-2
Level 4 Criteria A
Air Discharge: 15kV
Contact Discharge: 8kV
Radiated Field
IEC61000-4-3
Level 3 Criteria A
80MHz-1000MHz, 10V/m AM modulation
IEC60601-1-2
Criteria A
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 A
Surge
IEC61000-4-5
Level 3 Criteria C
3)
Common Mode : 2kV
4)
Differential Mode : 1kV
Conducted
IEC61000-4-6
Level 2 Criteria A
150kHz-80MHz, 3Vrms, 6Vrms at ISM bands and
Amateur radio bands
Power Frequency Magnetic Fields
IEC61000-4-8
Criteria A
Magnetic field strength 30A/m
Voltage Dips
Voltage Dips
IEC61000-4-11
5)
IEC60601-1-2
1)5)
1)
1)5)
1)
:2kV
1)5)
1)5)
1)5)
1)
30% 10ms Criteria A ;
2)
60% 100ms Criteria C
2
100% 5000ms Criteria C
2)
2)
30% 500ms
Criteria
B
Criteria C
1)
30%
100%500ms
10ms at step 45°Criteria A
1)
2)
Criteria
A
100% 20ms
Criteria C
100%
at step
45° C2)
100% 10ms
5000ms
Criteria
2)
Criteria B
100% 20ms
1) Criteria A: Normal performance within the specification limits
2)
2) Criteria C: Output out of regulation, shuts down during test (Need to recycle AC power cord or reset Criteria
enable signal
B to normal operation after test)
3) Asymmetrical: Common mode (Line to earth)
100% 5000ms
4) Symmetrical: Differential mode (Line to line)
5) Compliant with IEC-60601-1-2 4th edition requirements
5
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
IE
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
Dimensions
W x L x H: 100 x 194 x 40.5 mm
Mechanical drawing
Notes
― Dimensions are in mm
6
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
7
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
Functions
Start-up Time
The time required for the output voltage to reach 90% of its final steady state value, after the input voltage is applied.
Rise Time
The time required for the output voltage to change from 10% to 90% of its final steady state value.
Hold-up Time
Hold-up Time is the time between removal of input AC voltage, and the subsequently falling output to reach 90% of its steady state
value.
Graph illustrating the Start-up Time, Rise Time, and Hold-up Time
8
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
Dynamic Response
The power supply output voltage will remain within ±10% of its
steady state value, when subjected to a dynamic load 50 to 100%
of its rated current.
50 to 100% Load
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 temperature 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 latch mode until the input
voltage is removed; then, reapplied, and the surrounding air
temperature drops to its normal operating temperature.
Power Good
Inrush Current
Inrush current is the peak, instantaneous, input current measured
and, 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.
The Power Good signal prevents a computer from attempting to
operate on improper voltages and damaging itself by alerting it to
improper power supply. The ATX specification defines the PowerGood signal as a +5 volt (V) signal generated in the power supply
when it has passed its internal self-tests and the outputs have
stabilized. This normally takes between 0.1 and 0.5 seconds after
the power supply is switched on. The signal is then sent to the
motherboard, where it is received by the processor timer chip that
controls the reset line to the processor. When plug in AC power
cord, +5Vsb will start first, then Remote On/Off will be pulled low
by computer, +12V1/+12V2/+5V/+3.3V will power on and Power
good signal will pull high after 100ms~500ms. After input AC is
removed, Power good signal changes to TTL Low at least 1
millisecond before any output falls out of regulation range.

Graph illustrating the AC input, +5Vsb, Remote On/Off,
+12V1/12V2/5/3.3V, Power good signal
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 to
any of the outputs, the power supply will latch off.
Overload & Over current Protections
The power supply’s Overload (OLP) and Over current (OCP)
Protections will be activated before the output currents reach the
limits defined on Page 4. Once the power supply has reached
their maximum power limit, the protection will be activated and
the power supply will latch off.
9
Remote On_Off/INHIBIT
Remote ON_OFF/INHIBIT can be used to enable or disable all
outputs, except for the +5 Volt Standby. This signal can be pulled
down to a low level of 0.3 volts, or shorted to DC-Return, in order
for the main output to be enabled; and, floated (no connection to
the signal), or pulled up to a value greater than or equal to 3 volts,
in order to disable the main output. When the main output is
disabled, the +5V Standby output will continue to operate
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
Technical Datasheet
Medical ATX Power Supply
ATX 12V 1U Power Supply
Certificate
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 and IEC60065. Delta also has participated UL Client Test Data Program
(CDTP) for IEC 60601
10
All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (December 2017, Rev. 03)
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