Document
Features
• Up to 1200 W continuous output power • 1876 W/in3 power density • 97.9% peak efficiency • 4,242 Vdc isolation • Parallel operation for multi-kW arrays • OV, OC, UV, short circuit and thermal protection • 6123 through-hole ChiP package
n 2.494” x 0.898” x 0.286” (63.34 mm x 22.80 mm x 7.26 mm)
Typical Applications
• 380 DC Power Distribution • High End Computing Systems • Automated Test Equipment • Industrial Systems • High Density Power Supplies • Communications Systems • Transportation
BCM® Bus Converter
BCM380x475y1K2A3z
®S
C US C NRTL US
Fixed Ratio DC-DC Converter
Product Ratings
VPRI = 380 V (260 – 410 V)
VSEC = 47.5 V (32.5 – 51.3 V) (NO LOAD)
PSEC= up to 1200 W K = 1/8
Product Description
The VI Chip® Bus Converter (BCM®) is a high efficiency Sine Amplitude Converter™ (SAC™), operating from a 260 to 410 VDC primary bus to deliver an isolated, ratiometric output from 32.5 to 51.3 VDC.
The BCM380x475y1K2A3z offers low noise, fast transient response, and industry leading efficiency and power density. In addition, it provides an AC impedance beyond the bandwidth of most downstream regulators, allowing input capacitance normally located at the input of a POL regulator to be located at the primary side of the BCM module. With a primary to secondary K factor of 1/8, that capacitance value can be reduced by a factor of 64x, resulting in savings of board area, material and total system cost.
Leveraging the thermal and density benefits of Vicor’s ChiP packaging technology, the BCM module offers flexible thermal management options with very low top and bottom side thermal impedances. Thermally-adept ChiP-based power components, enable customers to achieve low cost power system solutions with previously unattainable system size, weight and efficiency attributes, quickly and predictably.
This product can operate in reverse direction, at full rated power, after being previously started in forward direction.
BCM® Bus Converter Page 1 of 25
Rev 1.7 07/2015
vicorpower.com 800 927.9474
Typical Application
BCM380x475y1K2A3z
enable/disable switch
FUSE VPRI
SOURCE_RTN
BCM
TM
enable/disable switch
EN
VAUX
CI_BCM_ELEC
+VPRI –VPRI
+VSEC –VSEC
PRIMARY
SECONDARY
ISOLATION BOUNDRY
SGND RI_PRM_DAMP
LI_PRM_FLT
RTRIM_PRM RAL_PRM
PRM
ENABLE
TRIM
AL SHARE/ CONTROL NODE
VAUX REF/ REF_EN
VT
VC
IFB
SGND RI_PRM_CER
+IN –IN
SGND
+OUT –OUT
SGND
Adaptive Loop Temperature Feedback VTM Start Up Pulse
TM VC
VTM
+OUT
RO_PRM_DAMP LO_PRM_FLT
PC
CO_PRM_CER
+IN
–IN –OUT
PRIMARY
SECONDARY
ISOLATION BOUNDRY
VOUT CO_VTM_CER LOAD
LOAD_RTN
BCM380x475y1K2A3z + PRM + VTM, Adaptive Loop Configuration
Voltage Sense
enable/disable switch
FUSE VPRI
SOURCE_RTN
BCM
TM EN
VAUX
+VPRI CI_BCM_ELEC
–VPRI
+VSEC –VSEC
PRIMARY
SECONDARY
ISOLATION BOUNDRY
PRM
enable/disable switch
ENABLE TRIM
SGND
RI_PRM_DAMP
SGND
AL
SHARE/ CONTROL NODE
LI_PRM_FLT
CI_PRM_ELEC
+IN –IN
SGND
VAUX REF/ REF_EN
VT VC IFB
+OUT
–OUT
REF 3312 IN OUT
GND
SGND
.