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Input Characteristics

90-132/180-264Vac

U = Autoranging

Output Power/Current

V

out

5V

V

out

< 5V

S = 300W

S = 60A

P = 450W

P = 90A

M = 600W

M = 120A

Product Grade

E = 0°C to +85°C Case

C = 0°C to +85°C Case

I = -30°C to +85°C Case

Output Power/Current

V

out

5V

V

out

< 5V

Y = 50W

Y = 10A

X = 75W

X = 15A

W = 100W

W = 20A

V = 150W

V = 30A

U = 200W

U = 40A

Product Highlights

If you’re looking for the convenience 

of a complete, low profile, agency-

approved switching power supply, 

look no further. The FlatPAC combines

Vicor’s workhorse VI-200 family of

DC-DC converters with a modular

package and front end subassembly to

provide from 50 to 600W of output

power from one to three outputs.

A flat plate heatsink for use in 

conduction cooled applications may be

specified as an alternate to the standard

finned version by adding “CC” to the

end of the model number.

Vicor’s FlatPAC is also available with

a current controlled output using

BatMod converter modules of 12, 24,

or 48Vdc outputs. This option is 

specified by appending “BM” or “BC”

(for conduction cooled versions) to the

end of the FlatPAC model number.

The FlatPAC’s contemporary design

allows us to configure your order

quickly and provide rapid turnaround

on standard models. It is truly a 

complete power solution, enabling 

you to spend more time designing your

system and less time worrying about

how to power it.

Features

Microcontroller architecture

Inputs: 115/230Vac autoranging

Meets FCC Part 15, EN55022, Class B 

conducted emissions

80-90% efficiency

Any output: 1 to 95Vdc

Module enable/disable (except LU series)

UL, CSA, TÜV, VDE, BABT, CE marked

Remote sense and current limit

BUS OK and AC OK (except LU series)

40mS ride-through time

OVP and thermal shutdown

1 output; up to 200W

1 or 2 outputs; up to 400W

1, 2, or 3 outputs; up to 600W

F l a t PA C

50 to 600W

Autoranging 

AC-DC Switchers

FlatPAC Configuration Chart

Typical Model:  V I - R U   

Input: 115/230Vac; Output 1: 5Vdc at 200W

Output 2: 12Vdc at 200W

Output 3: 12Vdc at 200W

# of 

Total Power

Part No.

Converters   Dimensions

50-200W

VI-LU

1

9.25" x 2.5" x 1.37"

(234,8 x 63,5 x 34,8mm)

200-400W

VI-MU

2

9.25" x 4.9" x 1.37"

(234,8 x 124,5 x 34,8mm)

300-600W

VI-NU

3

9.25" x 7.3" x 1.37"

(234,8 x 185,4 x 34,8mm)

100-400W

VI-PU

– 

2

9.25" x 4.9" x 1.37"

(234,8 x 124,5 x 34,8mm)

150-600W

VI-QU

– 

3

9.25" x 7.3" x 1.37"

(234,8 x 185,4 x 34,8mm) 

150-600W

VI-RU

– 

3

9.25" x 7.3" x 1.37"

(234,8 x 185,4 x 34,8mm) 

U

U

U

E

1

1

0

Single 

Outputs:

Dual 

Outputs:

Triple 

Outputs: 

Options

BC = BatMod/Conduction 

Cooled

BM= BatMod

CC = Conduction Cooled

Output Voltage

Z 2V

M 10V

K 40V

Y 3.3V

1 12V

4 48V

0 5V

P 13.8V H 52V

X 5.2V

2 15V

F 72V

W 5.5V

N 18.5V D 85V

V 5.8V

3 24V

B 95V

T 6.5V

L 28V

R 7.5V

J 36V

Output Power

V

out

5V

V

out

< 5V

W = 100W

W = 20A

V = 150W

V = 30A

U = 200W

U = 40A

S = 300W

S = 60A

Q = 400W

Q = 80A

FlatPAC   10/02    1 of 4

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FlatPAC Specifications

(Typical at 25°C, nominal line and 75% load, unless otherwise specified.)

Input Characteristics

AC line input

Autoranging

90-132/180-264Vac 

Line frequency

47 to 63Hz (C-grade and E-grade)

47 to 440Hz (I-grade)

Inrush current

115Vac operation

1 converter: 16A @ peak line; 2 converters: 23A @ peak line; 3 converters: 39A @ peak line

230Vac operation

1 converter: 32A @ peak line; 2 converters: 47A @ peak line; 3 converters: 78A @ peak line

Ride-through time (full load)

90/180Vac low line

5ms minimum

115/230Vac nominal line

40ms minimum

AC fail warning time

5ms minimum (low line, full load)

AC and BUS OK (2 converter and 3 converter models only)

Off state

Vce = 70V maximum

On state

Vcesat = 0.4V maximum @ 1mA (1.5mA max.)

Module disable (2 converter and 3 converter models only, optically isolated LED input)

Continuous forward current

1 mA to 30mA

Forward voltage

1.65V max. at 30mA

Dielectric withstand

Primary to chassis GND

2,121Vdc

Primary to secondary

4,242Vdc

Secondary to chassis GND

707Vdc

Output Characteristics (applies to each output individually)

E-Grade

C-, I-Grade

MIN.

TYP.

MAX.

MIN.

TYP.

MAX

UNITS

NOTES

Setpoint accuracy

1%

2%

0.5%

1%

V

NOM

Load/line regulation

0.5%

0.05%

0.2%

V

NOM

LL to HL, 10% to Full Load

Load/line regulation

1%

0.2%

0.5%

V

NOM

LL to HL, No Load to full load

Output temperature drift

0.02

0.01

0.02

%/°C

Over rated temperature

Long term drift

0.02

0.02

%/1k hours

Output ripple 

2V

150mV

60mV

100mV

p-p

20MHz bandwidth

5V

5%

2%

3%

p-p

20MHz bandwidth

10-48V

3%

0.75%

1.5%

p-p

20MHz bandwidth

Output voltage trimming

1

50%

110%

50%

110%

Total remote sense

compensation

0.5

0.5

Volts

0.25V max. neg. leg

OVP setpoint

125%

115%

125%

135%

V

NOM

Recycle power 

Current limit

105%

135%

105%

125%

I

NOM

Automatic restart

Short circuit current

2

20%

140%

20%

130%

I

NOM

Thermal Characteristics

Efficiency

78-88%

80-90%

Shutdown temp. — case

90

95

105

90

95

105

°C

Cool and recycle power to restart

Operating temp. — case

85

85

°C

See Thermal Curves

Mechanical Specifications

Weight

3

22.4 (652)

22.4 (652)

Ounces (Grams)

Safety Agency Approvals

UL, CSA, TÜV, VDE, IEC 950, CE Marked for low voltage directive, 73/23/EEC

Environmental Characteristics/Product Grade Designators

Storage temperature

-20°C to +100°C (C-grade and E-grade)

-55°C to +100°C (I-grade)

Operating temperature (case)

0°C to +85°C (C-grade and E-grade)

-30°C to +85°C (I-grade)

EMI / EMC Characteristics (Performed on selected samples representative of the U Series FlatPac product family.)

Conducted emissions, LISN

EN 55022 and FCC R&R, Part 15, Subpart B, Class B

Electrostatic discharge

IEC 801-2, 1991, Level 4; ±8kV Contact, ± 15kV Air Discharge

RF radiated immunity, E-field

IEC 801-3, 1984; 27MHz to 500MHz, 3 V/M, CW

Electrical fast transients/burst

EN 61000-4-4, Level 2; ±1kV,

Surge immunity

EN 61000-4-5, Class 3; ±2kV Line to Ground, ±1kV Line to Line

1

10, 12V and 15V outputs, trim range ±10%. Consult factory for wider trim range.

2

Output voltages of 5V or less incorporate foldback current limiting, greater than 5V incorporate straight line current limiting.

3

For MU, PU series, multiply value by 2; for NU, QU, RU series, multiply value by 3.

FlatPAC   10/02    2 of 4

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Thermal Curves, 5V Output

Thermal Curves, 10 to 48V Output

0

75

150

225

300

375

450

525

600

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (Deg. C)

Output P

o

w

e

r (W

atts)

0

25

50

75

100

125

150

175

200

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (Deg. C)

Output P

o

w

er (W

atts)

0

50

100

150

200

250

300

350

400

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (Deg. C)

Output P

o

w

e

r (W

atts)

0

75

150

225

300

375

450

525

600

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (Deg. C)

Output P

o

w

er (W

atts)

0

25

50

75

100

125

150

175

200

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (Deg. C)

Output P

o

w

er (W

atts)

0

50

100

150

200

250

300

350

400

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

Ambient Temperature (Deg. C)

Output P

o

w

er (W

atts)

Application Circuits

MOD DIS –

MOD DIS +

AC OK –

AC OK +

BUS OK –

BUS OK +

Internal

Supervisory

Circuits

(Optocouplers)

AC Mains

Earth Ground

L1

L2/N

GND

2-Up

and

3-Up

1-Up

V

LINE

 

 90 (180) Vac

AC Line

Interrupted

AC

Line

AC OK

BUS OK

T0 T1

T2

T3

T4

Conditions: Full Load 90 (180) Vac, AC Line

Time Interval

Min

Typ

Max

Units

Notes

T0-T1

0

0.1

1.0

ms

T2-T3

0

40

ms

Ride-through time

T2-T4

5

ms

Hold-up time

T3-T4

5

ms

AC fail warning time

Resistor Values for Trimming Standard Output Voltages

Nom. Output Voltage

5V

12V

15V

24V

28V

48V

Trim Range

R1(k

)

0.953

15.8

22.1

41.2

48.7

90.9

+10%, -10%

R2(k

)

90

90

90

90

90

90

R2

+S

Trim

10K

R1

+ Vout 

Vout RTN

+O

–O

–S

AC Mains Connections

Power Up and Power Down Sequencing

Output Trimming

Ambient Temperature (Deg. C)

Ambient Temperature (Deg. C)

Ambient Temperature (Deg. C)

Ambient Temperature (Deg. C)

Ambient Temperature (Deg. C)

Ambient Temperature (Deg. C)

LU Series

MU, PU Series

NU, QU, RU Series

LU Series

MU, PU Series

NU, QU, RU Series

Output Power (W

atts)

Output Power (W

atts)

Output Power (W

atts)

Output Power (W

atts)

Output Power (W

atts)

Output Power (W

atts)

FREE AIR 

50 LFM

100 LFM

250 LFM

500 LFM

750 LFM

1000 LFM

FREE AIR 

50 LFM

100 LFM

250 LFM

500 LFM

750 LFM

1000 LFM

FlatPAC   10/02    3 of 4

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Mechanical Drawings

10

11

12

13

14

15

16

7

8

9

MOUNTING HOLE

ø 0.15 

±

0.01 THRU

4 PLACES

2.156 

±

0.010

54.76 

±

0.25

0.192 

±

0.010

4.88 

±

0.25 0.18

4.57

6.00

152.4

2.540 

±

0.030

64.52 

±

0.76

1.27

32.26

OUTPUT 1

MOUNTING HOLE

ø 0.15 

±

0.01 THRU

5 PLACES

10

16

10

11

12

13

14

15

16

10

11

12

13

14

15

16

10

11

12

13

14

15

16

7

8

9

1

2

3

4

5

6

4.562 

±

0.010

115.87 

±

0.25

2.281 

±

0.010

57.94 

±

0.25

0.199 

±

0.010

5.05 

±

0.25

0.18

4.57

6.00

152.4

4.960 

±

0.030

125.98 

±

0.76

3.83

97.16

1.17

29.72

OUTPUT 1

OUTPUT 2

OUTPUT 1

+

10

11

12

13

14

15

16

10

16

10

11

12

13

14

15

16

10

11

12

13

14

15

16

10

11

12

13

14

15

16

10

11

12

13

14

15

16

10

16

10

16

10

11

12

13

14

15

16

7

8

9

1

2

3

4

5

6

7.000 

±

0.010

177.8 

±

0.25

4.710 

±

0.010

119.63 

±

0.25

2.290 

±

0.010

58.17 

±

0.25

MOUNTING HOLE

ø 0.15 

±

0.01 THRU

6 PLACES

0.190 

±

0.010

4.83 

±

0.25

0.18

4.57

6.00

152.4

7.380 

±

0.030

187.45 

±

0.76

5.48

139.19

1.93

49.02

OUTPUT 1

OUTPUT 2

OUTPUT 3

OUTPUT 1

OUTPUT 1

OUTPUT 2

+

+

+

12

1.375 

±

0.020

34.91 

±

0.51

0.50

12.57

9.245 

±

0.030

234.82 

±

0.76

1.11

28.19

Measure case temperature 

this surface.

Inputs

1 MOD DIS–

2 MOD DIS+

3 AC OK–

4 AC OK+

5 BUS OK–

6 BUS OK+

7 AC IN L1

8 AC IN L2/N

9 CHASSIS GND

Outputs

10 +OUT (#10-32 Stud)

11 +OUT

12 +SENSE (V

TRIM

*)

13 TRIM (I

TRIM

*)

14 –SENSE (I

MON

*)

15 –OUT

16 –OUT (#10-32 Stud)

*On FlatPACs with BatMODs only.

Input connector,

Amp P/N 644488-6;

mating connector,

MTA-100 IDC Series

Terminals for

#16-12 AWG wire

Output connector,

Amp P/N 644486-5;

mating connector,

MTA-100 IDC Series

All Models

LU Series

MU, PU Series

NU, QU, RU Series

FlatPAC   10/02    4 of 4