82575EB datasheet(40/62 Pages) INTEL

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Intel® 82575EB Gigabit Ethernet Controller — Thermal Information

Intel® 82575EB Gigabit Ethernet Controller

317679-004

Datasheet

Revision: 2.11

January 2011

Table 6.

Power Supply Sequencing

Figure 2.

Voltage Power Sequencing Options

To meet the 375 mA inrush current requirements (not including external capacitors) the ramp time

should be 5 ms -100 ms on all power rails. For faster ramps (100 us - 5 ms), expect higher inrush

current due to the high charging current of the decoupling capacitors of 3.3 V, 1.8 V and 1.0 V rails.

5.3

Thermal Information

The 82575EB device is specified for operation when the ambient temperature (TA) is within the range of

0 °C to 55 °C. For information about the thermal characteristics of the device, including operation

outside this range, please refer to the 82575EB Thermal Application Note.

Symbol

Parameter

Min

Max

Unit

T3 18

VCC3p3 (3.3 V) stable to VCC1p8 stable

100

T18 1

VCC1p8 stable to VCC (1.0 V) stable

T3 1

VCC3p3 (3.3 V) stable to VCC (1.0 V) stable

100

Tm-per, Tm-ppo

3.3 V core to GIO_PWR_GOOD and MAIN_PWR_OK

TBD

Tper-m, Tppo-m

GIO_PWR_GOOD, MAIN_PWR_OK off before 3.3 V

core down

0ms

VCC1p8 (1.8V)

Power-on Reset

(internal)

VCCP (3.3V)

Aux power stable

Main power stable

Tlpg

Tlpg-per

MAIN_PWR_OK

Tm-per

Tm-ppo

Main Power stable

Tper-m

Tppo-m

VCC/VCC1p0(1V)

T3_18

T18_1

GIO_PWR_GOOD

T3_1

Tlpgw

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