参数资料
型号: BCM48BT120T300A00
厂商: Vicor Corporation
文件页数: 11/18页
文件大小: 0K
描述: V.I CHIP BCM BUS CONVERTER
应用说明: Factorized Power Architecture and V-I Chips
产品培训模块: VI Chip Bus Converter Modules
标准包装: 1
系列: V-I Chip™, BCM™
类型: 总线转换器模块
输出数: 1
电压 - 输入(最小): 38V
电压 - 输入(最大): 55V
输出电压: 12V
电流 - 输出(最大): 25A
电源(瓦) - 制造商系列: 300W
电压 - 隔离: 2.25kV(2250V)
应用: 商用
特点: 具有远程开/关功能和 UVLO
安装类型: 通孔
封装/外壳: 模块
尺寸/尺寸: 1.28" L x 0.87" W x 0.26" H(32.5mm x 22.0mm x 6.7mm)
包装: 托盘
工作温度: -40°C ~ 125°C
效率: 96%
电源(瓦特)- 最大: 300W
重量: 0.032 磅(14.51g)
其它名称: 1102-1146
BCM48BT120T300A00-ND
BCM 48 B x 120 y 300
9.0 SINE AMPLITUDE CONVERTER? POINT OF LOAD CONVERSION
973 pH
I OUT
R R OUT
L =
L IN IN = 5.7 nH
I OUT
OUT
L OUT = 600 pH
V IN IN
0.57 m Ω
C IN
430 μ Ω
C OUT
V V OUT
+
V
C C IN IN
R R CIN
2 μF
I I Q Q
109 mA
1/4 ? I OUT
+
V?I
+
3.13 Ω
1/4 ? V IN
9.0 m Ω
C
C OUT
R R COUT
47 μF
+
OUT
K
interesting attributes. Assuming that R OUT = 0 Ω and I Q = 0 A,
Figure 13 — VI Chip ? module AC model
The Sine Amplitude Converter (SAC?) uses a high frequency
resonant tank to move energy from input to output. (The
resonant tank is formed by Cr and leakage inductance Lr in the
power transformer windings as shown in the BCM ? module
Block Diagram. See Section 8). The resonant LC tank, operated
at high frequency, is amplitude modulated as a function of
input voltage and output current. A small amount of
capacitance embedded in the input and output stages of the
module is sufficient for full functionality and is key to achieving
power density.
The BCM48BF120T300A00 SAC can be simplified into the
preceeding model.
At no load:
R OUT represents the impedance of the SAC, and is a function of
the R DSON of the input and output MOSFETs and the winding
resistance of the power transformer. I Q represents the
quiescent current of the SAC control, gate drive circuitry, and
core losses.
The use of DC voltage transformation provides additional
Eq. (3) now becomes Eq. (1) and is essentially load
independent, resistor R is now placed in series with V IN .
R R
SAC ?
K K = = 1/32
V OUT = V IN ? K
(1)
IN
Vin
+
SAC
1/4
OUT
Vout
K represents the “turns ratio” of the SAC.
Rearranging Eq (1):
Figure 14 — K = 1/4 Sine Amplitude Converter?
K=
V OUT
V IN
(2)
with series input resistor
The relationship between V IN and V OUT becomes:
In the presence of load, V OUT is represented by:
V OUT = (V IN – I IN ? R) ? K
(5)
V OUT = V IN ? K – I OUT ? R OUT
(3)
Substituting the simplified version of Eq. (4)
(I Q is assumed = 0 A) into Eq. (5) yields:
and I OUT is represented by:
V OUT = V IN ? K – I OUT ? R ? K 2
(6)
I OUT =
I IN – I Q
K
(4)
BCM ? Bus Converter
Page 11 of 18
Rev 1.4
12/2012
vicorpower.com
800 735.6200
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