UWQ-12/17-Q48 Series

Wide Input, Isolated DOSA Quarter Brick DC/DC Converters

MDC_UWQ-12/17-Q48 Series.A01.D7 Page 3 of 17

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FUNCTIONAL SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

Conditions

➀

Minimum

Typical/Nominal

Maximum

Units

Input Voltage, Continuous

Full power operation

18

48

80

Vdc

Input Voltage, Transient

Operating or non-operating,

100 mS max. duration

100

Vdc

Isolation Voltage

Input to output

2250

Vdc

Input Reverse Polarity

None, install external fuse

None

Vdc

On/Off Remote Control

Power on or off, referred to -Vin

0

13.5

Vdc

Output Power

0

210

W

Output Current

Current-limited, no damage,

short-circuit protected

017

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

Conditions

➀ ➂

Operating voltage range

18

48

75

Vdc

Recommended External Fuse

Fast blow

20

A

Start-up threshold, measured at 50% load

Rising input voltage

16.5

17.5

17.9

Vdc

Undervoltage shutdown, measured at 50% load

Falling input voltage

15

16

17

Vdc

Overvoltage protection

Rising input voltage

None

Vdc

Reverse Polarity Protection

None, install external fuse

None

Vdc

Internal Filter Type

L-C

Input current

Full Load Conditions

Vin = nominal

4.52

4.76

A

Low Line

Vin = minimum

12.06

12.69

A

Inrush Transient

Vin = 48V.

0.05

TBD

A2-Sec.

Output in Short Circuit

50

100

mA

No Load input current

Iout = minimum, unit=ON

80

150

mA

Shut down mode input current

5

6.5

mA

Reflected (back) ripple current

➁

Measured at input with specified filter

15

25

mA, RMS

Back Ripple Current, No Filtering

500

525

mA-p-p

Back Ripple Current, with 22uF external

input capacitor

300

400

mA-p-p

Pre-biased startup

External output voltage < Vset

Monotonic

GENERAL and SAFETY

Efficiency

Vin=48V, full load

90

92

%

Vin=18V

90

92

%

Isolation

Isolation Voltage, input to output

No baseplate

2250

Vdc

Isolation Voltage, input to baseplate

With baseplate

1500

Vdc

Isolation Voltage, output to baseplate

With baseplate

1500

Vdc

Insulation Safety Rating

basic

Isolation Resistance

100

MΩ

Isolation Capacitance

1500

pF

Safety (certified to the following

requirements)

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

IEC/EN60950-1, 2nd edition

Yes

Calculated MTBF

Per Telcordia SR-332, issue 1, class 3, ground

fixed, Tambient=+25°C

TBC

DYNAMIC CHARACTERISTICS

Fixed Switching Frequency

160

180

200

KHz

Startup Time

Power On, to Vout regulation band,

100% resistive load

60

65

mS

Startup Time

Remote ON to Vout Regulated

60

65

mS

Dynamic Load Response

50-75-50% load step to 3% error band

220

275

μSec

Dynamic Load Peak Deviation

same as above

±1100

±1300

mV

FEATURES and OPTIONS

Remote On/Off Control

➃

“N” suffix:

Negative Logic, ON state

ON = pin grounded or external voltage

0

1

Vdc

Negative Logic, OFF state

OFF = pin open or external voltage

3.5

13.5

Vdc

Control Current

open collector/drain

1

2

mA

“P” suffix:

Positive Logic, ON state

ON = pin open or external voltage

3.5

13.5

V

Positive Logic, OFF state

OFF = ground pin or external voltage

0

1

V

Control Current

open collector/drain

1

2

mA

Base Plate

"B" suffix

optional