Rev 1.5

vicorpower.com

Page 4 of 21

08/2016

800 927.9474

BCM384x120y300Azz

Electrical Specifications

Specifications apply over all line and load conditions, unless otherwise noted;

boldface specifications apply over the temperature range of

Attribute

Symbol

Conditions / Notes

Min

Typ

Max

Unit

Powertrain

Input voltage range, continuous

360

400

V

Input voltage range, transient

Full current or power supported, 50ms max,

10% duty cycle max

360

420

V

Quiescent power

Disabled, PC Low

395

450.0

mW

380

440

500

ms

No load power dissipation

7.0

10.0

W

5.0

15.0

12

17

Inrush current peak

1.5

3

A

DC input current

0.9

A

Transformation ratio

K

1/32

V/V

Output power (average)

300

W

Output power (peak)

450

W

Output current (average)

27.3

A

Output current (peak)

39

A

Efficiency (ambient)

h

AMB

94.2

95.5

%

94.0

92.5

94.3

Efficiency (hot)

h

HOT

94.0

95.2

%

Efficiency (over load range)

h

20%

90.0

%

Output resistance

0.5

1.9

4.0

mΩ

2.6

6.0

9.4

6.0

8.6

12.0

Switching frequency

1.85

1.95

2.05

MHz

Output voltage ripple

20MHz BW

200

400

mV

Output inductance (parasitic)

Frequency up to 30MHz, Simulated J-lead model

500

pH

Output capacitance (internal)

31

µF

Output capacitance (external)

See chart for output capacitance vs. startup load limits

0

1000

µF