www.murata-ps.com

Single Output UCQ Models

Low-Profile, Quarter Brick, 8.3-40 Amp

Isolated DC-DC Converters

To Be Discontinued*

Typical units

FEATURES

Standard quarter-brick package/pinout

cost; Low profile, 0.4" (10.2mm)

Low

or 48V nominal input

24V

Outputs: 1.2V to 15V

Interleaved synchronous-rectifier topology

• Ultra high efficiency

• No output reverse conduction

Outstanding thermal performance

On/off control, trim & sense functions

isolated, 2250Vdc (BASIC)

Fully

Output overvoltage protection

I/O protected; Thermal shutdown

Fully

Designed to meet UL/EN/IEC60950-1

safety approvals

PRODUCT OVERVIEW

For applications requiring improved electrical and

thermal performance at reduced cost, consider

Murata Power Solutions’ new UCQ series “quarter

brick” DC-DC power converters. These compact

units measure just 1.45" x 2.3" x 0.4" (36.8 x 60.9

x 10.2 mm) and fit the industry-standard footprint.

Available outputs range between 1.2V @ 30 Amps

to 15V @ 6.7 Amps and accept a wide input range.

The UCQ’s interleaved, synchronous-rectifier

topology offers high efficiency (up to 93%), tight

line and load regulation, low noise and fast step

response. A single-board optimized open-frame

design contributes to impressive thermal opera-

tion. UCQ’s will operate up to +70°C and 100 LFM

airflow with no derating.

The UCQ’s feature full isolation to 2250Vdc

meeting BASIC insulation requirements of

UL/EN/IEC 60950-1. Input filters reduce propa-

gated switching noise back to input sources. Also

included is a remote On/Off switch control (with

positive or negative logic), output trim adjustable

over nominal and output sense functions to reduce

power lead losses. Extensive protection items

avoid damage from out of limit voltages, currents

and temperatures. Protection faults automatically

recover using the hiccup technique. Besides safety

testing to 60950-1, certifications for the UCQ in-

clude application for EMC compliance (to EN55022/

CISPR22 with filter), qualification testing.

+SENSE

(7)

+V

IN

(1)

+V

OUT

(8)

SWITCH

CONTROL

–V

OUT

(4)

–V

IN

(3)

–SENSE

(5)

PWM

CONTROLLER

OPTO

ISOLATION

REFERENCE &

ERROR AMP

V

OUT

TRIM

(6)

REMOTE

ON/OFF

CONTROL*

(2)

INPUT UNDERVOLTAGE, INPUT

OVERVOLTAGE, AND OUTPUT

OVERVOLTAGE COMPARATORS

* Can be ordered with positive (standard) or negative (optional) polarity.

Figure 1. Simplified Schematic

For full details go to

www.murata-ps.com/rohs

Typical topology may vary between units.

www.murata-ps.com/support

MDC_UCQ Models.E03

Page 1 of 24

Single Output UCQ Models

Low-Profile, Quarter Brick, 8.3-40 Amp

Isolated DC-DC Converters

PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE

➀

Output

R/N (mVp-p)

I

out

Power

V

out

(Volts) (Amps) (Watts) Typ. Max.

1.2

1.5

1.8

2.5

3.3

5

12

15

40

30

25

40

30

40

30

35

20

30

40

20

25

8.3

6.7

48

36

37.5

60

54

72

100

75

115.5

66

99

132

100

125

99.6

100.5

50

80

50

80

50

80

50

60

50

35

50

100

80

100

120

100

120

80

100

60

55

100

150

Regulation (Max.)

➁

Line

Load

V

in

Nom.

(Volts)

Input

I

in

full

Range

I

in

no

load

(Volts) load (mA) (Amps)

Efficiency

Min.

81%

85%

83%

86%

82%

85%

87%

88.5%

89.5%

89%

88%

89%

88%

90%

Typ.

83%

86%

88%

84%

87%

89%

90%

91%

90%

91.5%

92%

90%

91%

92%

To Be Discontinued*

Root Models

➀

UCQ-1.2/40-D24P-C

UCQ-1.2/30-D48N-C

UCQ-1.5/25-D48N-C

UCQ-1.5/40-D48N-C

UCQ-1.8/30-D48N-C

UCQ-1.8/40-D48N-C

UCQ-2.5/40-D24P-C

UCQ-2.5/30-D48N-C

UCQ-3.3/35-D24P-C

UCQ-3.3/20-D48N-C

UCQ-3.3/30-D48N-C

UCQ-3.3/40-D48N-C

UCQ-5/20-D24P-C

UCQ-5/20-D48N-C

UCQ-5/25-D48N-C

UCQ-12/8.3-D48N-C

UCQ-15/6.7-D48N-C

Please contact Murata Power Solutions for further information.

±0.125%

±0.25%

48

36-75

30

0.90

±0.125%

±0.25%

48

36-75

50

0.94

±0.125%

±0.25%

48

36-75

50

1.45

±0.125%

±0.25%

48

36-75

45

1.31

±0.1%

±0.2%

48

36-75

30

1.70

±0.125%

±0.25%

24

18-36

120

4.96

±0.125%

±0.25%

48

36-75

50

1.80

±0.25%

24

18-36

130

5.41

±0.125%

±0.25%

48

36-75

50

1.53

±0.125%

±0.25%

48

36-75

50

2.3

±0.1%

±0.2%

48

36-75

30

3.06

±0.125%

±0.25%

24

18-36

160

4.55

±0.125%

±0.25%

48

36-75

80

2.26

±0.125%

±0.25%

48

36-75

30

2.89

±0.125%

±0.25%

48

36-75

80

2.28

±0.125%

±0.25%

48

36-75

100

2.28

*LAST TIME BUY: 4/1/2018. CLICK HERE FOR DISCONTINUANCE NOTICES.

➀

Please refer to the part number structure for additional ordering part numbers and options.

➁

All specifications are at nominal line voltage and full load, +25 deg.C unless otherwise noted. See detailed specifications. Output capacitors are 1 µF ceramic || 10 µF electrolytic. I/O caps are necessary for

our test equipment and may not be needed for your application.

Outline dimensions:

2.3 × 1.45 × 0.40 inches

58.4 × 36.8 × 10.2 mm

Pinout: P32

(all models)

PART NUMBER STRUCTURE

Output

Configuration:

Unipolar,

single output

U CQ

-

3.3

/

30

-

D48 N B

H Lx

-

C

RoHS Hazardous Materials compliance

C

= RoHS-6, standard (does not claim EU RoHS exemption 7B–lead in solder)

Y

= RoHS-5 (with lead), optional, special order

Pin length option

Blank

= standard pin length 0.180 in. (4.6 mm)

L1

= 0.110 in. (2.79 mm)*

L2

= 0.145 in. (3.68 mm)*

Conformal coating

(optional)

Blank

= no coating, standard

H

= coating added, optional special order

Baseplate

(optional)

Blank

=

No baseplate

, standard

B

=

Baseplate installed

, optional special order

On/Off Control Logic

P

=

Positive logic (standard for D24, optional for D48)

N

=

Negative logic (standard for D48, optional for D24)

*Special quantity order is required;

no sample quantities available.

Note:

Some model number combinations

may not be available. Please contact

Murata Power Solutions.

Quarter-Brick Package

Nominal Output Voltage

Maximum Rated Output :

Current in Amps

Input Voltage Range:

D24 = 18-36 Volts (24V nominal)

D48 = 36-75 Volts (48V nominal)

www.murata-ps.com/support

MDC_UCQ Models.E03

Page 2 of 24

Single Output UCQ Models

Low-Profile, Quarter Brick, 8.3-40 Amp

Isolated DC-DC Converters

FUNCTIONAL SPECIFICATIONS

UCQ-1.2/30-D48 UCQ-1.5/25-D48 UCQ-1.5/40-D48 UCQ-1.8/30-D48 UCQ-1.8/40-D48

Input

Input voltage range

Start-up threshold, Volts

Undervoltage

shutdown, V

Overvoltage shutdown

Reflected (back) ripple

current, mA pk-pk

Input Current

Full load conditions

Inrush transient, A

2

sec

Output short circuit, mA

Low line (V

in

= min.),

Amps

Standby mode, mA

(Off, UV, OT shutdown)

Internal input filter type

Reverse polarity

protection

Remote On/Off Control

Positive logic

(P model suffix)

Negative logic

(N model suffix)

Current, mA

Output

Voltage output range

Voltage output accuracy

Adjustment range,

% of V

nom

.

Temperature coefficient

Minimum loading

Remote sense

compensation

Ripple/noise

(20 MHz bandwidth)

Line/Load regulation

Efficiency

Maximum capacitive

loading, µF low ESR

<0.02Ω max.,

resistive load

1,000

10,000

±10%

−20 + 10

See ordering guide.

±1% of V

nom

., (50% load)

±10%

±0.02% of V

out

range per °C

No minimum loading.

+10%

See ordering guide.

10,000

4,700

10,000

±10%

OFF = Ground pin to +0.8V

ON = Open or +3.5 to +13.5V max

OFF = Open or +3.5 to +13.5V

ON = Ground pin to +0.8V max

1

Pi-type

L-C

1.23

1.26

See ordering guide.

0.05

50-200, model dependent

1.96

1-10, model dependent

Pi-type

None, install external fuse.

Pi-type

1.74

2.30

34

33

34

32

See ordering guide.

34

32.5

none

10-30, model dependent

34

32.5

34

32

➀

Specs are typical unless noted.

www.murata-ps.com/support

MDC_UCQ Models.E03

Page 3 of 24

Single Output UCQ Models

Low-Profile, Quarter Brick, 8.3-40 Amp

Isolated DC-DC Converters

FUNCTIONAL SPECIFICATIONS

UCQ-2.5/40-D24 UCQ-2.5/30-D48 UCQ-3.3/35-D24 UCQ-3.3/20-D48 UCQ-3.3/30-D48

Input

Input voltage range

Start-up threshold, Volts

Undervoltage

shutdown, V

Overvoltage shutdown

Reflected (back) ripple

current, mA pk-pk

Input Current

Full load conditions

Inrush transient, A

2

sec

Output short circuit, mA

Low line (V

in

= min.),

Amps

Standby mode, mA

(Off, UV, OT shutdown)

Internal input filter type

Reverse polarity

protection

Remote On/Off Control

Positive logic

(P model suffix)

Negative logic

(N model suffix)

Current, mA

Output

Voltage output range

Voltage output accuracy

Adjustment range,

% of V

nom

.

Temperature coefficient

Minimum loading

Remote sense

compensation

Ripple/noise

(20 MHz bandwidth)

Line/Load regulation

Efficiency

Maximum capacitive

loading, µF low ESR

<0.02Ω max.,

resistive load

10,000

−20 + 10

See ordering guide.

±1% of V

nom

., (50% load)

±10%

±0.02% of V

out

range per °C

No minimum loading.

+10%

See ordering guide.

10,000

−10 to + 10%

OFF = Ground pin to +0.8V

ON = Open or +3.5 to +13.5V max

OFF = Open or +3.5 to +13.5V

ON = Ground pin to +0.8V max

1

Pi

L-C

6.69

2.39

See ordering guide.

0.05

50-200, model dependent

7.21

1-10, model dependent

L-C

None, install external fuse.

Pi

2.04

3.02

16.8

15

34

32

See ordering guide.

17

15

none

10-30, model dependent

35

34

35

34

➀

Specs are typical unless noted.

www.murata-ps.com/support

MDC_UCQ Models.E03

Page 4 of 24

Single Output UCQ Models

Low-Profile, Quarter Brick, 8.3-40 Amp

Isolated DC-DC Converters

FUNCTIONAL SPECIFICATIONS

UCQ-3.3/40-D48

Input

Input voltage range

Start-up threshold, Volts

Undervoltage

shutdown, V

Overvoltage shutdown

Reflected (back) ripple

current, mA pk-pk

Input Current

Full load conditions

Inrush transient, A sec

2

UCQ-5/20-D24

UCQ-5/20-D48

UCQ-5/25-D48

UCQ-12/8.3-D48

UCQ-15/6.7-D48N-C

See ordering guide

33

31.5

17

16

35

34

35

34

none

10-30, model dependent.

60 max.

35

34

31.5

See ordering guide.

0.1

1200

4.12

6.04

3.02

0.05

50-200, model dependent

3.82

1-10, model dependent

Pi

L-C

None, install external fuse.

L-C

Pi

3.04

0.03

120

3.03

Output short circuit, mA

Low line (V

in

= min.),

Amps

Standby mode, mA

(Off, UV, OT shutdown)

Internal input filter type

Reverse polarity

protection

Remote On/Off Control

Positive logic

(P model suffix)

Negative logic

(N model suffix)

Current, mA

Output

Voltage output range

Voltage output accuracy

Adjustment range,

% of V

nom

.

Temperature coefficient

Minimum loading

Remote sense

compensation

Ripple/noise

(20 MHz bandwidth)

Line/Load regulation

Efficiency

Maximum capacitive

loading, µF low ESR

<0.02Ω max.,

resistive load

OFF = Ground pin to +0.8V

ON = Open or +3.5 to +13.5V max

OFF = Open or +3.5 to +13.5V

ON = Ground pin to +0.8V max

1

OFF = Ground pin or to +1V.

ON = Open or +2.5 to +13.5V

OFF = Open or +2.5 to +13.5V

ON = Ground pin or to +1V.

See ordering guide.

±1% of V

nom

., (50% load)

−10 to + 10%

±0.02% of V

out

range per °C.

No minimum loading.

+10%

See ordering guide.

10,000

1,000

1000

➀

Specs are typical unless noted.

www.murata-ps.com/support

MDC_UCQ Models.E03

Page 5 of 24

参数名称	属性值
产品种类 Product Category	Isolated DC/DC Converters
制造商 Manufacturer	Murata(村田)
RoHS	Details
Number of Outputs	1 Output
Output Power	100 W
Input Voltage	36 V to 75 V
Output Voltage-Channel 1	5 V
Output Current-Channel 1	20 A
Isolation Voltage	2.25 kV
Package / Case Size	1/4 Brick
系列 Packaging	Bulk
产品 Product	Isolated
工厂包装数量 Factory Pack Quantity	15
单位重量 Unit Weight	1.058219 oz

	UCQ-5-20-D48N-C	UCQ-12-83-D48NB-C	UCQ-12-83-D48N-C	UCQ-5-20-D48NB-C	UCQ-33-30-D48N-C
描述		Current u0026 Power Monitors u0026 Regulators Vltg Out Hi-Sd Msmnt Current Shunt Mntr	Isolated DC/DC Converters 48V12Vout 8.3A 99.6W Negative polarity	Current u0026 Power Monitors u0026 Regulators Vltg Out Hi-Sd Msmnt Current Shunt Mntr	Isolated DC/DC Converters 48V 3.3Vout 30A 99W Negative polarity
产品种类 Product Category	Isolated DC/DC Converters	Isolated DC/DC Converters	Isolated DC/DC Converters	Isolated DC/DC Converters	Isolated DC/DC Converters
制造商 Manufacturer	Murata(村田)	Murata(村田)	Murata(村田)	Murata(村田)	Murata(村田)
RoHS	Details	Details	Details	Details	Details
Number of Outputs	1 Output	1 Output	1 Output	1 Output	1 Output
Output Power	100 W	99.6 W	99.6 W	100 W	99 W
Input Voltage	36 V to 75 V	36 V to 75 V	36 V to 75 V	36 V to 75 V	36 V to 75 V
Output Voltage-Channel 1	5 V	12 V	12 V	5 V	3.3 V
Output Current-Channel 1	20 A	8.3 A	8.3 A	20 A	30 A
Isolation Voltage	2.25 kV	2.25 kV	2.25 kV	2.25 kV	2.25 kV
系列 Packaging	Bulk	Bulk	Bulk	Bulk	Bulk
产品 Product	Isolated	Isolated	Isolated	Isolated	Isolated
工厂包装数量 Factory Pack Quantity	15	15	15	15	15
单位重量 Unit Weight	1.058219 oz	1.058219 oz	1.058219 oz	1.058219 oz	1.058219 oz

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