BCM4414XD1E5135YZZ Datasheet, PDF (23/41 Pages) Vicor Corporation – Isolated Fixed-Ratio DC-DC Converter

BCM4414xD1E5135yzz
Hot Swap Test – Scope Pictures
V_HI of VIA
BCM
I_HI of VIA
BCM
V_HI of ChiP
BCM
Charge
Pump
Hot-swap
Controller
ChiP BCM
V_LO of VIA
BCM
Figure 28 — High-Level Diagram for 384 V_DC Hot Swap with
ChiP BCM DC-DC converter
Overall, the objective is always remains the same in hot swap
applications; to give system designer the opportunity to build hot
swap capability into redundant power module arrays. This allows
telecoms and other mission critical applications to continue without
interruption even through failure and replacement of one or
possibly more of their power modules.
Hot Swap Test – Test circuit and Procedure
n Two BCMs in parallel with mercury relay#1 open
n Close mercury relay#1 and measure inrush current going
into #2 BCM
Figure 30 — Hot swap start-up
Ch1: I_HI of BCM#2
Ch2: V_LO of BCM#2
Ch3: V_HI of BCM#2 shows the fast high side voltage transient at the
high side terminal of BCM#2
Ch4: V_HI of ChiP BCM#2 shows the soft start charging the high side
capacitor as shown, time constant depends upon the gate signal.
4000 µF
DC
Maximum Input
Voltage
+HI
–HI
Mercury
Relay #1
+HI
–HI
+LO
BCM (K)
#1
–LO
+LO
BCM (K)
#2
–LO
Figure 29 — Test Circuit
Electronic
Load
Max Load
Figure 31 — Same as Figure 30 but at a bigger time scale shows
the appearance of the BCM#2
BCM^® in a VIA Package
Page 23 of 41
Rev 1.4
09/2016
vicorpower.com
800 927.9474