BCM4414XD1E13A2YZZ Datasheet, PDF (24/42 Pages) Vicor Corporation – Isolated Fixed-Ratio DC-DC Converter

BCM4414xD1E13A2yzz
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 384V_DC BCM in a VIA Package
showing internal Hot-Swap circuitry and ChiP BCM
The BCM in a VIA package provides the opportunity to incorporate
Hot-Swap capabilities into redundant power module arrays.
This allows telecoms and other mission critical applications to
continue operating without interruption even through failure and
replacement of one or more power modules.
Hot-Swap Test – Test circuit and Procedure
n Two parallel BCMs in a VIA package with mercury relay#1 open
n Close mercury relay#1 and measure inrush current going
into BCM#2
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 voltage transient at the high side
terminal of BCM#2
Ch4: V_HI of internal ChiP BCM#2 shows the soft start charging of
the high side capacitor.
4000µF
DC
Maximum Input
Voltage
+HI
–HI
Mercury
Relay #1
+HI
–HI
+LO
BCM
#1
–LO
+LO
BCM
#2
–LO
Figure 29 — Test Circuit
Electronic
Load
Max Load
Figure 31 — Larger time scale version of Figure 30 showing
startup of BCM#2
BCM^® in a VIA Package
Page 24 of 42
Rev 1.5
10/2016
vicorpower.com
800 927.9474