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TPS65400RGZT Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce TPS65400RGZT
Description  TPS65400 4.5- to 18-V Input Flexible Power Management Unit With PMBus/I2C Interface
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS65400RGZT Fiches technique(HTML) 3 Page - Texas Instruments

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CB1
SW1
SW1
SW1
PVIN1
PVIN2
PGND1
PGND2
SW2
SW2
SW2
CB2
COMP4
VFB4
ENSW4
CB4
SW4
PVIN4
PVIN3
SW3
CB3
ENSW3
VFB3
COMP3
PGND(thermal pad)
TPS65400
www.ti.com
SLVSCQ9B – NOVEMBER 2014 – REVISED SEPTEMBER 2015
5 Description (continued)
TPS65400 implements a PMBus-I2C-compatible digital interface. It helps Core Chip optimize system
performance by runtime changing regulated voltage, power sequence, phase interleaving, operating frequency,
read back operating status, and so forth.
The TPS65400 consists of four high-current buck switching regulators (SW1, SW2, SW3, and SW4) with
integrated FETs. The switching power supplies are intended for powering high-current digital circuits such as the
processor, FPGA, ASIC, memory, and digital I/Os. SW1 and SW2 support 4 A each, and SW3 and SW4 support
2 A each. Each regulator’s switching frequency is independently adjustable up to 2.2 MHz.
Current limit programmability on each switcher enables optimization of inductor ratings for a particular application
configuration not requiring the maximum current capability.
The TPS65400 can be powered from a single-input voltage rail between 4.5 and 18 V, making it suitable for
applications running off a 5- or 12-V intermediate power distribution bus.
Sequencing requirements can be met using the individual enable terminals or by programming the sequence
through the I2C bus into the onboard EEPROM. Output voltages can be set through external resistor networks
and VREF can be programmed from 0.6 to 1.87 V in 10-mV steps. All control and status info can be accessed
through a PMBus-compatible I2C bus.
The TPS65400 provides a high level of flexibility for monitoring and control through the I2C bus while providing
the option of programmability through the use of external components and voltage levels for systems not using
I2C.
6 Pin Configuration and Functions
RGZ Package
48-Pin VQFN
Top View
A.
Thermal pad must be soldered to PCB as SW3 and SW4 power ground
Copyright © 2014–2015, Texas Instruments Incorporated
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Product Folder Links: TPS65400


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