参数资料
型号: PI2161-EVAL1
厂商: Vicor Corporation
文件页数: 11/18页
文件大小: 0K
描述: EVALUATION BOARD FOR PI2161
标准包装: 1
系列: Picor®, Cool-Switch®
主要目的: 电源管理,高端驱动器(内部 FET)
嵌入式:
已用 IC / 零件: PI2161
已供物品:
其它名称: 1102-1061
?
Figure 19: PI2161 response to an increase in load current
Application Information
The PI2161 Cool-Switch is a medium voltage high
side load disconnect switch.
The R PG worst case condition for power dissipation is
a function of the maximum BUS voltage and minimum
VC clamp voltage.
This section describes in detail the procedure to follow
when designing with the PI2161 load disconnect
switch.
Pd RPG ?
( Vin max ? VC clampMIN ) 2
R PG
Lower Bias Resistor selection: R PG
As described in Functional Description section, in a
floating application as shown in Figure 1 the lower
Where:
V VD ? UVLO min : Drain input UVLO minimum voltage, 27V
bias resistor R PG placed between the PG pin and
Vin max :
Vin maximum voltage, 48V
system ground is required. R PG creates an offset
voltage at the PG pin to regulate VC with respect to
PG when the MOSFET is enabled.
The R PG resistor can be calculated using the following
expression:
VC ClampMax : Controller maximum VC clamp voltage,
12.5V
V DBST ? MAX : Maximum D BST Forward Voltage, 1.0V
VC ClampMin : Controller minimum VC clamp voltage, 11V
R PG ?
V VD ? UVLO min ? VC clampMAX ? V DBST ? MAX
I VCMAX ? 100 ? A
I VCMAX :
100 ? A :
Controller maximum VC bias current.
2.1mA
100μA is added for a margin
Example: 41V < Vin < 48V
Picor Corporation ? pi corpower.com
PI2161
Rev 1.1 , Page 11 of 18
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