Datasheet

TPS2363

SLUS680B –JANUARY 2006–REVISED JANUARY 2010

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REFERENCE INFORMATION

PCIExpress CEM (Card Electromechanical Specification) Standard

Table 1. Power Supply Rail Requirements

POWER RAIL x1 CONNECTOR x4/x8 CONNECTOR x16 CONNECTOR

3.3 V

Voltage tolerance ±9% (max) ±9% (max) ±9% (max)

Supply current 3.0 A (max) 3.0 A (max) 3.0 A (max)

Capacitive load 1000 mF (max) 1000 mF (max) 1000 mF (max)

12 V

Voltage tolerance ±8% ±8% ±8%

Supply current 0.5 A 2.1 A (max) 4.4 / 5.5 A (max)

Capacitive load 300 mF (max) 1000 mF (max) 2000 mF (max)

3.3 VAUX

Voltage tolerance ±9% (max) ±9% (max) ±9% (max)

Supply current 375 mA (max) 375 mA (max) 375 mA (max)

Wakeup enabled 20 mA (max) 20 mA (max) 20 mA (max)

Non-wakeup enabled

Capacitive load 150 mF (max) 150 mF (max) 150 mF (max)

Table 2. Add-in Card Power Dissipation

(1) (2) (3) (4)

X1 x4/x8 x16

Standard height 10 W

(max) 25 W

(max) 25 W (max) 25 W

(max) 75 W (max)

(5)

Low profile card3 10 W (max) 10 W (max) 25 W (max)

(1) A standard height x1 add-in card intended for desktop applications is limited in length to a half-length add-in card and 10 W maximum

power dissipation. A standard height x1 add-in card intended for server I/O applications with 25 W maximum power dissipation must be

greater than or equal to 177.80 mm (7.0 inches) in length, but must not exceed a full-length add-in card. See PCIExpress CEM Table

6-1 for add-in card size definitions. The same server I/O add-in card must, at initial power-up, not exceed 10 W of power dissipation,

until configured as a high power device, at which time it must not exceed 25 W of power dissipation. Refer to Chapter 6 of the PCI

Express Base Specification for information on the power configuration mechanism.

(2) A standard height x16 add-in card intended for server I/O applications must limit its power dissipation to 25 W. A standard height x16

add-in card intended for graphics applications must, at initial power-up, not exceed 25 W of power dissipation, until configured as a high

power device, at which time it must not exceed 60 / 75 W of power dissipation. Refer to Chapter 6 of the PCI Express Base

Specification for information on the power configuration mechanism.

(3) All low profile add-in cards are limited in length to a half-length add-in card and must not exceed the power dissipation values shown in

Add-in Card Power Dissipation Table.

(4) A x16 graphics card is limited to 60/75 W. The 60/75 W maximum can be drawn via the combination of 12-V and 3.3-V rails, but each

rail draw is limited as defined in Power Supply Rail Requirements Table, and the sum of the draw on the two rails cannot exceed 60/75

(5) 150 W, x16 graphics 150 W ATX requires a second connector, each connector must be current limited to 75 W to insure that when a

fault occurs it will not damage the connectors. The TPS2490 is a good 12-V hot swap controller for the second cable.

Product Folder Link(s): TPS2363