Vicor Corporation Tel: 800-735-6200 vicorpower.com

V•I Chip Voltage Transformation Module

Rev. 1.6

Page 3 of 20

PRELIMIN

ARY

Specifications, continued

Parameter

Min

Typ

Max

Unit

Note

Rated DC current

0

80

A

Peak repetitive current

120

A

Max pulse width 1ms, max duty cycle 10%,

baseline power 50%

DC current limit

80

95

120

A

Current share accuracy

5

10

%

See Parallel Operation on page 11

Efficiency

Half load

93.0

93.8

%

See Fig.5

Full load

90.8

91.7

%

See Fig.5

Internal output inductance

1.6

nH

Internal output capacitance

300

µF

Effective value

Load capacitance

100,000

µF

Output overvoltage setpoint

1.83

V

Output ripple voltage

No external bypass

47

70

mV

See Figs.7 and 10

200µF bypass capacitor

2

mV

See Fig.8

Average short circuit current

200

mA

Effective switching frequency

2.5

3.0

3.6

MHz

Fixed, 1.5 MHz per phase

Line regulation

K

0.0309

1/32

0.0316

Load regulation

1.3

1.5

m

Ω

See Figs.9 and 27

Transient response

Voltage undershoot

10

mV

Voltage overshoot

26

mV

Response time

200

ns

See Figs.11 and 12

Recovery time

1

µs

See Figs.11 and 12

Output overshoot

Input turn-on

0

mV

PC enable

0

mV

Output turn-on delay

From application of power

170

250

ms

No output filter; See Fig.3

From release of PC pin

300

µs

No output filter; See Fig.2

OUTPUT (Conditions are at nominal line, full load, and 25°C ambient unless otherwise specified)

Efficiency vs. Output Current

Output Current (A)

85

86

87

88

89

90

91

92

93

94

95

816

24

32404856

647280

Power Dissipation vs. Output Current

Output Current (A)

0

2

4

6

8

10

12

816

24

32

40

485664

7280

Figure 6—Power dissipation as a function of output current at

OUTPUT WAVEFORMS