EN1C11_15 Datasheet, PDF (10/13 Pages) Vicor Corporation – Component Power Front-end System for EN Compliance

APPLICATION NOTE (CONT.)
EN1xxx
Ripple (V p-p)
π–θ θ
Figure 15 — Hold-up time
Hold-up Time
Power Fail
Warning
Ride-Through Time
254 V
205 V
190 V
Power Fail
Bus OK
Converter
Shut down
30
25
1,100 μF
* ^{820 μF}
680 μF
1,300 μF
1,600 μF
2,200 μF
20
*
15
10
5
0
250
Operating Power (W)
500
Figure 16 — Ripple voltage vs. operating power and bus
capacitance, series combination of C1, C2 (see Figure 1a)
80
75
70
65
60
55
50
45
40
25
15
30
50
Output Voltage
Figure 17 — Converter ripple rejection vs. output voltage (typical)
ENMODS™
Page 10 of 13
Rev 3.1
06/2015
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