vicorpower.com

800-735-6200

V•I Chip Bus Converter Module

B048F080T24

Rev. 2.1

Page 3 of 12

V•I Chip Bus Converter Module

Parameter

Min

Typ

Max

Unit

Note

Output voltage

6.34

9.16

Vdc

No load

6.04

8.89

Vdc

Full load

Output power

0

240

W

0

232

W

Rated DC current

0

39

Adc

Peak repetitive power

360

W

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

baseline power 50%

Current share accuracy

5

10

%

See Parallel Operation on Page 10

Efficiency

Half load

95.2

96.0

%

See Figure 5

Full load

95.0

95.8

%

See Figure 5

Internal output inductance

1.6

nH

Internal output capacitance

48

µF

Effective value

Load capacitance

2,300

µF

Output overvoltage setpoint

9.3

Vdc

Module will shut down

Output ripple voltage

No external bypass

132

220

mVp-p

See Figures 7 and 9

30 µF bypass capacitor

17

mVp-p

See Figure 8

Short circuit protection set point

42

Adc

Module will shut down

Average short circuit current

0.3

A

Effective switching frequency

3.10

3.20

3.30

MHz

Fixed, 1.6 MHz per phase

Line regulation

K

0.1650

1/6

0.1683

Load regulation

7.5

10.0

m

Ω

Transient response

Voltage overshoot

200

mV

100% load step; See Figures 10 and 11

Response time

200

ns

See Figures 10 and 11

Recovery time

1

µs

See Figures 10 and 11

Output overshoot

Input turn-on

0

mV

No output filter; See Figure 3

PC enable

0

mV

No output filter; See Figure 2

Output turn-on delay

From application of power

270

ms

No output filter; See Figure 3

From release of PC pin

78

ms

No output filter

Efficiency vs. Output Power

82

84

86

88

90

92

94

96

98

0

30

60

90

120

150

180

210

240

Output Power (W)

Figure 5 — Efficiency vs. output power

Power Dissipation

2

4

6

8

10

12

0

30

60

90

120

150

180

210

240

Output Power (W)

Figure 6 — Power dissipation as a function of output power

Output Waveforms