ENMODS™

Rev 3.3

vicorpower.com

Page 10 of 13

06/2017

800 927.9474

EN1xxx

Output Voltage

40

45

50

55

60

65

70

75

80

50

30

15

5

2

Figure 17 — Converter ripple rejection vs. output voltage (typical)

Operating Power (W)

0

5

10

15

20

25

30

500

250

*

2,200

µF

1,600

µF

1,300

µF

*

1,100

µF

820

µF

680

µF

Figure 16 — Ripple voltage vs. operating power and bus

capacitance, series combination of C1, C2

(see Figure 1a)

Figure 15 — Hold-up time

Application Note (Cont.)

205V

190V

Power Fail

Power Fail

Warning

Bus OK

Converter

Shut down

Hold-up Time

254V

Ride-Through Time

Ripple (Vp-p)

π

– θ

θ