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UWS Series

Sixteenth-brick DOSA-Compatible,

Wide Input Isolated DC/DC Converters

MDC_UWS Series.B02 Page 7 of 25

FUNCTIONAL SPECIFICATIONS, UWS-5/10-Q48

ABSOLUTE MAXIMUM RATINGS

Conditions

➀

Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous

Full temperature range

0

80

Vdc

Input Voltage, Transient

Operating or non-operating, tested:

100 mS max. duration

0

100

Vdc

Isolation Voltage

Input to output

2250

Vdc

Input Reverse Polarity

None, install external fuse

None

Vdc

On/Off Remote Control

Power on, referred to -Vin

0

15

Vdc

Output Power

0

50.63

W

Output Current

Current-limited, no damage, short-circuit protected

0

10

A

Storage Temperature Range

Vin = Zero (no power)

-55

125

°C

Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those

listed in the Performance/Functional Specifications Table is not implied or recommended.

INPUT

Operating voltage range

18

48

75

Vdc

Recommended External Fuse

Fast blow

5

A

Start-up threshold, turn on

Rising input voltage

16.5

17.5

17.9

Vdc

Undervoltage shutdown, turn off

Falling input voltage

15

16.75

17.5

Vdc

Overvoltage shutdown

NA

Vdc

Reverse Polarity Protection

None, install external fuse

None

Vdc

Internal Filter Type

LC

Input current

Full Load Conditions

Vin = nominal

1.14

1.2

A

Low Line

Vin = minimum

2.44

2.51

A

Inrush Transient

0.4

A2-Sec.

Output in Short Circuit

100

200

mA

No Load Input Current

Iout = minimum, unit=ON

30

60

mA

Shut-Down Mode Input Current

510

mA

Reflected (back) ripple current

➁

No filtering

150

200

mAp-p

Reflected (back) ripple current

➁

Measured at input with specified filter

15

30

mAp-p

Pre-biased startup

External output voltage < Vset

Monotonic

GENERAL and SAFETY

Efficiency

Vin=48V, full load

88

91

%

Vin=24V, full load

89.5

91

%

Isolation

Isolation Voltage, Input to Output

2250

Vdc

Insulation Safety Rating

basic

Isolation Resistance

100

MΩ

Isolation Capacitance

1000

pF

Safety (meets the following requirements)

UL-60950-1, CSA-C22.2 No.60950-1,

IEC/EN60950-1, 2nd Edition

Yes

Calculated MTBF

Per Telcordia SR332, issue 1, class 3, ground

fixed, Tambient=+25°C

3.0

DYNAMIC CHARACTERISTICS

Fixed Switching Frequency

225

275

325

KHz

Startup Time

Power On to Vout regulated

30

mS

Startup Time

Remote ON to Vout regulated

30

mS

Dynamic Load Response

50-75-50% load step, settling time to within

±1% of Vout

100

200

μSec

Dynamic Load Peak Deviation

Same as above,

±180

±240

mV

FEATURES and OPTIONS

Remote On/Off Control

➅

"N" suffix

Negative Logic, ON state

ON = Pin grounded or external voltage

-0.1

0.8

V

Negative Logic, OFF state

OFF = Pin open or external voltage

2.5

15

V

Control Current

open collector/drain

1

2

mA

"P" suffix

Positive Logic, ON state

ON = Pin open or external voltage

10

15

V

Positive Logic, OFF state

OFF = Ground pin or external voltage

0

0.7

V

Control Current

open collector/drain

1

2

mA