AMD-K6 datasheet(277/346 Pages) AMD

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Chapter 17

Thermal Design

259

20695H/0—March 1998

AMD-K6® Processor Data Sheet

Preliminary Information

Thermal Design

17.1

Package Thermal Specifications

The AMD-K6 processor operating specification calls for the

case temperature (TC) to be in the range of 0°C to 70°C. The

ambient temperature (TA) is not specified as long as the case

temperature is not violated. The case temperature must be

measured on the top center of the package. Table 56 shows the

AMD-K6 processor thermal specifications.

Figure 91 on page 260 shows the thermal model of a processor

wi th a pass ive ther mal s o lutio n . Th e case-t o-ambient

temperature (TCA) can be calculated from the following

equation:

TCA = PMAX • θCA

= PMAX • ( θIF + θSA)

Where:

PMAX

= Maximum Power Consumption

= Case-to-Ambient Thermal Resistance

= Interface Material Thermal Resistance

= Sink-to-Ambient Thermal Resistance

Table 56. Package Thermal Specification

TC Case

Temperature

θJC

Junction-Case

Maximum Thermal Power

2.9V Component

3.2V Component

166MHz

200MHz

233MHz

0°C–70°C

0.77°C/W

17.2 W

20.0 W

28.3 W

Stop Grant Mode

1.45 W

1.53 W

1.75 W

Stop Clock Mode

1.0 W

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