TPS62871中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書

1 Features

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? 2.7V to 6V input voltage range

? 6A, 9A, 12A, and 15A family of pin-to-pin

compatible device

? Four output voltage ranges:

– 0.4V to 0.71875V in 1.25mV steps

– 0.4V to 1.0375V in 2.5mV steps

– 0.4V to 1.675V in 5mV steps

– 0.8V to 3.35V in 10mV steps

? Output voltage accuracy ±1%

? 7mΩ and 4.5mΩ internal power MOSFETs

? Adjustable external compensation

? Resistor-selectable start-up output voltage

? Resistor-selectable switching frequency

? Power-save or forced-PWM operation

? I2C-compatible interface up to 1MHz

? Differential remote sensing

? Optional stacked operation for increased output

current capability

? Thermal warning and thermal shutdown

? Precise enable input

? Active output discharge

? Optional spread-spectrum clocking

? Power-good output with a window comparator

? Available in 2.55mm × 3.55mm × 1mm VQFN

package with wettable flanks

? –40°C to 125°C junction temperature, TJ

2 Applications

? Optical networks

? Storage

? FPGA, ASIC, and digital core supply

? DDR memory supply

3 Description

The TPS6287x is a family of pin-to-pin 6A, 9A, 12A,

and 15A synchronous step-down DC/DC converters

with differential remote sensing. For each current

rating, there are full-featured device variants with I2C

interface and limited-featured device variants without

I2C interface. All devices offer high efficiency and

ease of use. Low-resistance power switches allow

up to 15A continuous output current at high ambient

temperatures.

The devices can operate in stacked mode to deliver

higher output currents or to spread the power

dissipation across multiple devices.

The TPS6287x family implements an enhanced DCScontrol

scheme that supports fast transients with

fixed-frequency operation. Devices can operate in

power save mode for maximum efficiency, or forced-

PWM mode for the best transient performance and

lowest output voltage ripple.

An optional remote sensing feature maximizes voltage

regulation at the point-of-load, and the device

achieves better than ±1% DC voltage accuracy under

all operating conditions.