MCP14E3 datasheet(14/26 Pages) MICROCHIP

tên linh kiện	MCP14E3

Giải thích chi tiết về linh kiện	4.0A Dual High-Speed Power MOSFET Drivers With Enable

PDF	26 Pages

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14 / 26 page

MCP14E3/MCP14E4/MCP14E5

DS22062B-page 14

4.6.2

QUIESCENT POWER DISSIPATION

The power dissipation associated with the quiescent

current draw of the MCP14E3/MCP14E4/MCP14E5

depends upon the state of the input and enable pins.

Refer to the DC Characteristic table for the quiescent

current draw for specific combinations of input and

enable pin states. The quiescent power dissipation is:

EQUATION 4-3:

4.6.3

OPERATING POWER DISSIPATION

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 describes as:

EQUATION 4-4:

–

()

() V

Where:

IQH

Quiescent current in the high

state

Duty cycle

IQL

Quiescent current in the low

state

VDD

MOSFET driver supply voltage

Where:

Cross-conduction constant

(A*sec)

Switching frequency

VDD

MOSFET driver supply voltage

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