Rev. 2.0

12/10

Page 3 of 16

V•I CHIP INC. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200

vicorpower.com

BCM48BH120T120A00 - BCM48BH120M120A00

ATTRIBUTE

SYMBOL

CONDITIONS / NOTES

MIN

TYP

MAX

UNIT

Voltage range

38

48

55

Vdc

dV/dt

1

V/µs

Quiescent power

PC connected to -IN

68

150

mW

No load power dissipation

1.7

3.0

W

3.5

Inrush current peak

5.5

12

A

DC input current

3.5

A

K factor

K

1/4

Output power (average)

97

W

120

Output power (peak)

150

W

Average P

Output voltage

Section 3.0

8.5

14

V

Output current (average)

Pout < =120 W

11.3

A

Efficiency (ambient)

η

93

94.6

%

90.5

Efficiency (hot)

η

92.6

93.7

%

Minimum efficiency

η

89

%

(over load range)

Output resistance (ambient)

35.4

44.1

55.8

m

Ω

Output resistance (hot)

46.1

56.1

69.1

m

Ω

Output resistance (cold)

27.2

35.0

45.7

m

Ω

Load capacitance

500

uF

Switching frequency

1.60

1.75

1.90

MHz

Ripple frequency

3.20

3.50

3.80

MHz

Output voltage ripple

140

355

mV

Section 8.0

570

800

ms

PC

PC voltage (operating)

4.7

5.0

5.3

V

PC voltage (enable)

2.0

2.5

3.0

V

PC voltage (disable)

1.95

V

PC source current (startup)

50

100

300

uA

PC source current (operating)

2

mA

PC internal resistance

Internal pull down resistor

50

150

400

k

Ω

PC capacitance (internal)

Section 5.0

588

pF

PC capacitance (external)

External capacitance delays PC enable time

1000

pF

External PC resistance

60

k

Ω

PC external toggle rate

1

Hz

Ton2

60

100

µs

4

10

µs

1.0 ELECTRICAL CHARACTERISTICS

Specifications apply over all line and load conditions unless otherwise noted; Boldface specifications apply over the