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MCP14E6/7/8
4.6.2
QUIESCENT POWER DISSIPATION
4.6.3
OPERATING POWER DISSIPATION
The power dissipation associated with the quiescent
current draw depends upon the state of the input pin.
The MCP14E6/7/8 devices have a quiescent current
draw with a Logic ' 1 ' on the input pin of 1 mA (typical)
and 300 μA (typical) with a Logic ' 0 '. The quiescent
The operating power dissipation occurs each time the
MOSFET driver output transitions, because for a very
short period of time, both MOSFETs in the output stage
are ON, simultaneously. This cross-conduction current
leads to a power dissipation described as:
power dissipation is:
EQUATION 4-4:
EQUATION 4-3:
P Q = ( I QH × D + I QL × ( 1 – D ) ) × V DD
Where:
I QH = Quiescent Current in the High State
D = Duty Cycle
I QL = Quiescent Current in the Low State
V DD = MOSFET Driver Supply Voltage
? 2011 Microchip Technology Inc.
Where:
CC =
f =
V DD =
P CC = CC × f × V DD
Cross-Conduction Constant (A * sec)
Switching Frequency
MOSFET Driver Supply Voltage
DS25006A-page 15
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MCP14E7-E/SN 功能描述:功率驱动器IC 3A MOSFET Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
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