Datasheet

TPS2359

SLUS792H –FEBRUARY 2008–REVISED MAY 2013

www.ti.com

REFERENCE INFORMATION

The TPS2359 has been designed to simplify compliance with the PICMG-AMC.R2.0 and PICMG-MTCA.0

specifications. These specifications were developed by the PCI Industrial Computer Manufacturers Group

(PICMG). These two specifications are derivations of the PICMG-ATCA (Advanced Telecommunication

Computing Architecture) specification originally released in December, 2002.

PICMG-AMC Highlights

• AMC - Advanced Mezzanine Cards

• Designed to Plug into ATCA Carrier Boards

• AdvancedMC™ Focuses on Low Cost

• 1 to 8 AdvancedMC™ per ATCA Carrier Board

• 3.3-V Management Power – Maximum Current Draw of 150 mA

• 12-V Payload Power – Converted to Required Voltages on AMC

• Maximum 80-W Dissipation per AdvancedMC™

• Hotswap and Current Limiting Must Be Present on Carrier Board

• For Details, see www.picmg.org/v2internal/AdvancedMC.htm

PICMG-MTCA Highlights

• MTCA – MicroTelecommunications Computing Architecture

• Architecture for Using AMCs Without an ATCA Carrier Board

• Up to 12 AMCs per System, Plus Two MCHs, Plus Two CUs

• Focuses on Low Cost

• All functions of ATCA Carrier Board Must Be Provided

• MicroTCA is also known as MTCA, mTCA, or uTCA For Details, see www.picmg.org/v2internal/microTCA.htm

Control and Status Registers

Ten 8 bit registers are used to control and read the status of the TPS2359. Registers 0 and 1 control the 12A

channel and register 2 controls the 3A channel. Similarly, registers 3 and 4 control the 12B channel and register

5 controls the 3B channel. Register 6 contains eight general configuration bits. Read-only registers 7, 8, and 9

report back system status to the I

C controller. All ten registers use the I

C protocol and are organized as

follows:

Table 1. Top Level Register Functions

REG R/W SLOT VOLTAGE FUNCTION

0 R/W A 12 Set current limit, power good threshold, and OR functions of 12A.

1 R/W A 12 Set fault time, enable, and bleed down functions of 12A.

2 R/W A 3.3 Set fault time, enable, and bleed down functions of 3A.

3 R/W B 12 Set current limit, power good threshold, and OR functions of 12B.

4 R/W B 12 Set fault time, enable, and bleed down functions of 12B.

5 R/W B 3.3 Set fault time, enable, and bleed down functions of 3B.

6 R/W A, B 3.3, 12 System configuration controls.

7 R A, B 3.3, 12 Fault and PG outputs for 3A, 12A, 3B, 12B – these bits set IRPT.

8 R A, B 12 Over current and fast trip latches for 3A, 12A, 3B, 12B.

9 R A, B 3.3, 12 Channel status indicators for 3A, 12A, 3B, 12B.

Product Folder Links: TPS2359