SPC58ECX datasheet(135/153 Pages) STMICROELECTRONICS

номер детали	SPC58ECX

подробное описание детали	SPC58 C Line - 32 bit Power Architecture automotive MCU Dual z4 cores 180 MHz, 4 MBytes Flash, HSM, ASIL-B

PDF	153 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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135 / 153 page

DS11620 Rev 8

135/153

SPC584Cx, SPC58ECx

Package information

135

board. This model can be used to generate simple estimations and for computational fluid

dynamics (CFD) thermal models. More accurate compact Flotherm models can be

generated upon request.

To determine the junction temperature of the device in the application on a prototype board,

use the thermal characterization parameter (

ΨJT) to determine the junction temperature by

measuring the temperature at the top center of the package case using the following

equation:

Equation 4

TJ = TT + (ΨJT x PD)

where:

TT = thermocouple temperature on top of the package (°C)

ΨJT = thermal characterization parameter (°C/W)

PD = power dissipation in the package (W)

The thermal characterization parameter is measured in compliance with the JESD51-2

specification using a 40-gauge type T thermocouple epoxied to the top center of the

package case. Position the thermocouple so that the thermocouple junction rests on the

package. Place a small amount of epoxy on the thermocouple junction and approximately 1

mm of wire extending from the junction. Place the thermocouple wire flat against the

package case to avoid measurement errors caused by the cooling effects of the

thermocouple wire.

When board temperature is perfectly defined below the device, it is possible to use the

thermal characterization parameter (

ΨJPB) to determine the junction temperature by

measuring the temperature at the bottom center of the package case (exposed pad) using

the following equation:

Equation 5

TJ = TB + (ΨJPB x PD)

where:

TT = thermocouple temperature on bottom of the package (°C)

ΨJT = thermal characterization parameter (°C/W)

PD = power dissipation in the package (W)

SPC58ECX датащи(PDF) 135 Page - STMicroelectronics