参数资料
型号: BCD384F480T325A00
厂商: Vicor Corporation
文件页数: 15/18页
文件大小: 0K
描述: EVALUATION BOARD BCM BUS CONVERT
产品培训模块: VI Chip Bus Converter Modules
标准包装: 1
系列: V-I Chip™, BCM™
主要目的: DC/DC,步降
输出及类型: 1,隔离
功率 - 输出: 325W
输出电压: 48V
电流 - 输出: 7A
输入电压: 360 ~ 400V
稳压器拓扑结构: 降压
频率 - 开关: 1.75MHz
板类型: 完全填充
已供物品:
已用 IC / 零件: BCM384F480T325
其它名称: 1102-1009
7.0 CURRENT SHARING
PRELIMINARY DATASHEET
BCM 384 x 480 T 325A00
The SAC topology bases its performance on efficient transfer
of energy through a transformer, without the need of closed
loop control. For this reason, the transfer characteristic can be
approximated by an ideal transformer with some resistive drop
and positive temperature coefficient.
This type of characteristic is close to the impedance characteristic
of a DC power distribution system, both in behavior
(AC dynamic) and absolute value (DC dynamic).
When connected in an array (with same K factor), the BCM?
module will inherently share the load current with parallel
units, according to the equivalent impedance divider that the
system implements from the power source to the point of load.
It is important to notice that, when successfully started,
BCM? bus converter modules are capable of bidirectional
operations (reverse power transfer is enabled if the module
input falls within its operating range and the bus conveter is
otherwise enabled). In parallel arrays, because of the resistive
behavior, circulating currents are never experienced (energy
conservation law).
General recommendations to achieve matched array impedances
are (see also AN016 for further details):
? to dedicate common copper planes within the PCB to
deliver and return the current to the modules
? to make the PCB layout as symmetric as possible
? to apply same input/output filters (if present) to each unit
Figure 17 — BCM? module array
Rev. 1.9
V?I CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
4/2011
Page 15 of 18
v i c o r p o w e r. c o m
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